Registered participants

1. Al-Sadooni, Ameerah (Keele University):
   "Quantifying the impact of the ionized outflows on the ambient interstellar medium in two nearby spiral galaxies: NGC 4945 and NGC 300" Show abstract
   The evolution of spiral galaxies is still an open question that requires more investigation. The star formation process needs a mechanism to be sustained continuously. The galactic fountain as feedback of the star formation process has an important role to recycling gas within the environment of the host galaxy. In this work, we have investigated two examples of nearby spiral galaxies; edge-on and face-on. These examples can uncover a detailed view on how the ionized outflowing gas from these targets interact with the ambient interstellar medium. In other words, the kinematics, emission line ratios, and morphological structures of the ionized outflows will be clearer to examine in these nearby galaxies. We used Fabry-Perot mode (SALT) to observe Hα with a medium resolution, and both of the lines [S II]λλ6717,6731 and [N II]λλ6549,6583 with a low resolution from the centre of NGC 4945. More optical observation was made by using long-slit mode to cover the optical emission lines ([O III]λ4363, Hβ, Hα, [S II]6717,6731, [N II]λλ6549,6583, and [O III]λ5007). We used different long-slit positions across the emerging outflowing gas and also some H II regions to study the disk-halo interaction in terms of a feedback from stellar winds and supernovae in this galaxy. Qualitatively, we traced the outflowing from the nucleus and surrounding area of NGC 4945 in the form of a cone that is traced by Hα, [S II], and [N II] emissions. We studied the kinematics of this ionized gas by Doppler shifts and line broadening. Maps of the emission line ratios are constructed to investigate the physical properties of both nucleus and ionized cone, and calculate the electron density, mass, and outflow rate. Two fields within the second target NGC 300, were observed by Fabry-Perot with a medium resolution to trace Hα emission as a first step to identify some H II regions which display an interesting kinematics. These results encouraged us to re-observe these areas by long-slit mode to examine the impact of the outflowing from these regions on the surrounding interstellar medium. With upcoming data we will estimate the dust extinction in these two galaxies to correct our observations from interstellar reddening and search for the presence of extraplanar dust and their relation to the galactic fountain mechanism.
2. Aydi, Elias (South African Astronomical Observatory and University of Cape Town):
   "SALT spectroscopic follow-ups of Classical Novae" Show abstract
   A Classical nova is the consequence of a thermonuclear runaway on the surface of a white dwarf in a cataclysmic variable. In this presentation I will elaborate on SALT follow-up of two classical novae discovered by the MASTER and OGLE surveys. For the first nova (SMC 2016), which belongs to the small Magellanic cloud, we carried out multi-wavelength follow up that included SALT RSS/HRS and FTS spectroscopy, SMARTS and OGLE photometry, Swift X-ray and UV observations. Such multi-wavelength follow-up is of great importance and potentially offers a broad understanding of the physical mechanisms responsible for nova eruptions. This nova was very fast and bright showing a decline time of ~ 4 days. SALT HRS spectroscopy revealed a He/N type spectrum with very high expansion velocity and offered an opportunity for modeling the system. The second nova (V5852 Sgr) is a moderately fast nova with a light curve showing a combination of different classes and a spectrum of Fe II type. Estimation of the distance raised the possibility that the nova was associated with the Sagittarius stream.
3. Bankowicz, Małgorzata (Astronomical Observatory of the Jagiellonian University):
   "Properties and environments of [Ultra] Luminous Infrared Galaxy candidates around the southern ecliptic pole" Show abstract
   [Ultra] Luminous Infrared Galaxies ([U]LIRGs) are a rare class of galaxies whose exact mechanisms of activity and very high dust luminosity are still under debate, with the mixed role of galaxy mergers, starburst and AGN to be clarified. For 39 [U]LIRGs discovered in the AKARI Deep Field-South (ADF-S; see Malek et al. 2014, Malek, Bankowicz et al. 2017) we attempted to evaluate galactic density in their vicinity. Positional and luminosity data were estimated upon the Digital Sky Survey (DSS) which comprises of scans of photographic plates. For most objects only available redshift estimates were based on the CIGALE fitting of photometric values. Neighbouring galaxes to our objects lack redshift data for distance estimation and therefore we attemt to estimate the density on the projected value to the observational plane. SALT spectroscopic observations will make it possible to measure spectroscopic redshifts of [U]LIRGs and their neighbours and thus verify the previously obtained photometric redshifts and possibly confirm identities of these galaxies as [U]LIRGs; measure their properties directly from spectral parameters; use the gathered information and spectra to fit the spectral synthesis models in order to reconstruct evolutionary histories of these sources and calculate spatial density of galaxies in the vicinity of [U]LIRGs for ascertaining environmental influence of their evolution. The obtained results will significantly increase our understanding of the mechanisms behind unusual activity of these rare class of sources.
4. Beri, Aru (University of Southampton):
   "Post-flare Formation of the Accretion Stream and a Dip in Pulse Profiles of LMC X--4" Show abstract
   We will present results from pulse profile evolution study of an accreting X-ray pulsar LMC X-4 during and after the large X-ray flares using data from two observatories XMM-Newton and RXTE. During the flares, the pulse profiles were found to have significant phase offset in the range of 0.2-0.5 compared to the pulse profiles immediately before or after. Investigating the pulse profiles for about 10^5 seconds after the flares, it was found that it takes about 2000-4000 seconds for the modified accretion column to return to its normal structure and formation of an accretion stream that causes a dip in the pulse profile of LMC X-4. We will also discuss prospectives of the future study of reprocessing of the X-ray flares into optical by the accretion disk and the surface of the companion. This will provide us with a more comprehensive picture about the geometry of this binary system. In addition to the above, time lag studies using simultaneous observations in optical and X-rays will be quite useful to infer the extent of reprocessing region.
5. Buckley, David (SAAO):
   "The SALT Large Program on Transients" Show abstract
   Here I review the SALT Large Program on transient followup, which has been running for two semesters already and into its third. This multi-institutional/multi-partner program aims to observe many types of transient objects, covering mainly the following classes:
   • X-ray/γ-ray transients, including low and high mass X-ray binaries (LMXBs and HMXBs) and gamma ray bursts (GRBs)
   • Flaring blazars (BL Lac and FSRQs)
   • Optical counterparts to transients discovered from the MASTER, OGLE, Gaia and Spitzer surveys (cataclysmic variables, erupting variables, tidal disruption events, novae)
   • Optical counterparts to gravitational wave and neutrino events
   The program has been extremely productive and demonstrates how a telescope like SALT, which is 100% queue scheduled, is ideal for undertaking this type of pruuogram, where often the ability to react quickly to transient event alerts is paramount. I review some of the recent results, many already resulting in papers or about to be submitted.
6. Chaboyer, Brian (Dartmouth College):
   "Abundance Analysis of the Globular Cluster NGC 6681" Show abstract
   We obtained high resolution spectra of nine RGB stars in NGC 6681 with signal-to-noise ~100 using the MIKE spectrograph on the Magellan Clay II telescope and HRS on SALT in order to study the nature of the multiple stellar populations in this globular cluster. NGC 6681 was an ideal target due to its limited spectroscopic data, relatively bright RGB, extensive UV dataset from the HST archive, and excellent proper motion determinations from Massari et al. (2013). We obtain spectral resolutions of R∼65,000, higher than most studies being performed at this time, which are necessary for this particularly detailed abundance analysis. One star is in common between the Magellan and SALT data and shows our abundances from each instrument agree within 0.2 sigma. In performing a line-by-line differential abundance analysis with respect to the Sun, we find a cluster [Fe/H] = -1.63 +/- 0.07 dex and [alpha/Fe] = 0.44 +\- 0.11 dex. We find a clear Na-O anticorrlation that allows for the identification of two distinct populations separated in [O/Fe] at 0.6 dex and [Na/Fe] at roughly 0.15 dex.
7. Charles, Phil (University of Southampton):
   "Transient X-ray binaries observed with SALT" Show abstract
   Latest results from the SALT Transients program.
8. Crause, Lisa (SAAO)
9. Crawford, Steve (SAAO):
   "Extragalactic transients with SALT" Show abstract
   We have conducting a number of studies of extragalactic transients with SALT including follow-up supernovae studies and regularly monitoring of AGN. SALT is ideally suited for these types of studies and we highlight the different modes that we are using SALT to provide a range of observations looking at the Universe. We also will present how future updates to SALT could make it the ideal telescope for spectroscopic transient follow-up.
10. Drahus, Michał (Astronomical Observatory of the Jagiellonian University):
    "Unveiling the recent history of asteroid disruptions with SALTICAM" Show abstract
    One of the most remarkable advances in solar system science over the past decade is the direct observation of asteroidal disruptions. While the causes are often not fully understood, various lines of evidence suggest two plausible scenarios. The first one sees the disruption as a consequence of a rapid rotation, resulting from a long-term spin-up powered by radiation-driven torques. The second one, as a consequence of a hypervelocity collision with another minor object. To investigate this issue we wish to take advantage of the SALT’s big eye, and take ultra-deep exposures of selected asteroids with SALTICAM in search of their dust trails – the most easily detectable signs of recent disruptions. Thanks to our novel approach, we will be able to discover new trails even hundred times fainter than can be discovered at the present time. Our survey will target both rapidly- and slowly-rotating objects, the former susceptible of rotational and collisional disruption and the later of collisional disruption only. In this way, we will be able to quantify how often these two types of disruption occur, and at what proportion.
11. Drozd, Katarzyna (CAMK)
    
12. Gałan, Cezary (Nicolaus Copernicus Astronomical Center, PAS,Warsaw):
    "On the evolution and interactions in symbiotic binaries from chemical composition analysis" Show abstract
    For studying the properties of symbiotic systems components we are using optical and near-IR spectra obtained in both, low- and high-resolution, with use of various class, ground-based telescopes, from the medium size placed in good locations (SpUpNIC/1.9 m SAAO) up to among the best spectrographs on largest telescopes around the world (Phoenix/Gemini-S, HRS/SALT). I will show what interesting about interactions, history of the mass transfer, and evolution we are able to derive from analysis of abundances in symbiotic giants.
13. Goyal, Arti (Astronomical observatory of the Jagiellonian University):
    "Simultaneous optical flux, colour and polarization intra-night variability monitoring of blazars" Show abstract
    The physical processes responsible for producing low-amplitude optical intra-night variability (INV) in blazar jets indicate very efficient emission and energy dissipation processes and thus continue to be debated. We present the initial results of our on-going monitoring programme to investigate the optical INV of a sample of optically bright (V $\leq$ 15 mag) blazars in optical color and polarization. In this talk, we present the results of observations using several moderate size (0.5 - 1.5 m) optical telescopes situated in Poland, India, Japan, Crimea, Russia, and Turky. Significant optical flux and color variations, sometimes together with changes in polarization degree and angle are reported. We discuss our findings in the context of blazar emission models where several scenarios such as various jet plasma instabilities leading to the formation of shocks, magnetic reconnection sites, and turbulence are proposed to explain such occurrences.
14. Gromadzki, Mariusz (Warsaw University Astronomical Observatory)
15. Gupta, Neeraj (IUCAA):
    "Infrared color selected sample of high-z quasars for MALS" Show abstract
    Deep galaxy surveys have revealed that the global star formation rate (SFR) density in the universe peaks at 1 < z < 2 and sharply declines towards z = 0. But a clear picture of underlying processes, in particular the evolution of cold atomic (∼100 K) and molecular gas phases, that drive such a strong evolution is yet to emerge. The MeerKAT Absorption Line Survey (MALS) is designed to use MeerKAT’s L- and UHF-band receivers to carry out the most sensitive dust-unbiased search of intervening HI 21-cm and OH 18-cm absorption lines at 0 < z < 2. We are carrying out an ambitious optical spectroscopic campaign using SALT to identify high-z quasars required for MALS. For the SALT campaign, using WISE IR colors we have developed a preselection method that allows us to select high-z 'candidate' quasars with ~75% efficiency. In addition to providing ideal targets for our MeerKAT survey, the SALT campaign will provide an unbiased sample of RLQs for systematically addressing issues linking the evolution of AGNs to dust obscuration, black hole growth and host galaxy properties.In this talk, I will present main objectives and survey design of MALS, and early results from the ongoing SALT campaign.
16. Gvaramadze, Vasilii (Sternberg Astronomical Institute, Lomonosov Moscow State University):
    "SALT spectroscopy of stars with mid-infrared nebulae" Show abstract
    I will present the results of spectroscopic follow-up with SALT of many dozens of candidate massive stars revealed through the detection of their circumstellar nebulae with the Spitzer Space Telescope and the Wide-field Infrared Survey Explorer (WISE). Our observations, carried out in 2011-2016, confirmed that the majority of the targets are indeed massive stars, of which the most common are stars with spectra typical of hot luminous blue variables (LBVs) and blue supergiants. Spectroscopic and photometric monitoring of the newly identified LBV-like stars with the SALT and small telescopes of the SAAO revealed significant changes in the spectra and brightness of four of these stars, which brought the number of the known Galactic bona fide LBVs to 18.
17. Hamanowicz, Aleksandra (Astronomical Observatory of University of Warsaw):
    "Nuclear transient form OGLE and Gaia with SALT" Show abstract
    TBA
18. Herzig, Aleksander (Astronomical Observatory of the Jagiellonian University):
    "[U]LIRG properties with different dust emission models" Show abstract
    Aim - [Ultra] Luminous InfraRed Galaxies (abbreviated as [U]LIRGs) posses a significantly higher star formation rate than other star forming galaxies. We create comparison between the two dust emission models, Dale (Dale et al., 2014) and CMCIRSED model (Casey, 2012) in terms od differentation between certain types of galaxies and ascertaining their properties. We attempt to model whole sample of galaxies and check the validity of [H/U]LIRG classification. Methods - For this work we use CIGALE (Noll et al., 2009; Serra et al., 2011), a program consisting of set of various models for creating Spectral Energy Distributions of the given objects.
19. Hughes, Jack (Rutgers University):
    "Searching for the Most Massive Galaxy Clusters" Show abstract
    The Planck Collaboration has released a large sample of galaxy clusters, selected through the Sunyaev Zel'dovich (SZ) effect, from a survey covering essentially the entire sky. The Planck SZ catalog contains a large number of confirmed clusters, as well as a significant number of unconfirmed candidates. The confirmed sample includes the most massive known clusters and extends up to redshifts as high as z~0.9. The Planck confirmation process favored candidates with some signal in ancillary data sets, which resulted in the preferential confirmation of low-redshift systems. The unconfirmed sample, therefore, is likely biased toward massive clusters at redshifts z>0.5. Over the past three years we have been actively pursuing the identification of unconfirmed Planck cluster candidates using X-ray observatories (Swift, Chandra, and XMM-Newton), optical and near-infrared imaging observations on 4-m class telescopes (the Mayall telescope on Kitt Peak and the SOAR telescope on Cerro Pachon), and SALT spectroscopy. In this talk I will report on our on-going study aimed at unveiling the most massive galaxy clusters in the observable Universe.
20. Iłkiewicz, Krystian (CAMK):
    "Studying symbiotic stars in the Magellanic Clouds with SALT" Show abstract
    TBA
21. Islam, Nazma (CAMK):
    "SALT observation of the X-ray binary 4U 1700-37" Show abstract
    4U 1700-37 is an eclipsing High Mass X-ray binary with a O6 supergiant HD 153919 as the optical companion, in a short orbital period of 3.412 days. The nature of the compact object is uncertain due to lack of pulsations or cyclotron line features in the spectrum. The orbital elements of the binary, especially the eccentricity, is estimated from radial velocity measurements of the optical companion. However, there is ambiguity about the parameters of the binary orbit of 4U 1700-37, especially whether it is circular or significantly eccentric. In a orbital evolution study of this binary system with mid-eclipse times from X-ray data, we put an upper limit on the eccentricity of the system. With a SALT observation of the optical companion. we carry out radial velocity measurements and estimate the orbital parameters of the binary system. These estimation of the binary orbital parameters is important in the context of determining the mass of the compact object, which is either a very high mass neutron star or a very low mass black hole.
22. Ivison, Rob (ESO):
    "Facilities and developments at ESO" Show abstract
    I will review the facilities provided to its Member States by ESO, looking also to the future.
23. Jeffery, Simon (Armagh Observatory):
    "SALT HRS observations of chemically peculiar subdwarfs" Show abstract
    The majority of hot subdwarfs lie on or close to the helium main-sequence. Many have hydrogen-rich surfaces, but a substantial fraction of the hotter subdwarfs have hydrogen-depleted or hydrogen-deficient surfaces. Amongst the former, four have been found to show extraordinary overabundances of heavy elements including zirconium and lead. Two of these are intrinsic variables and all have high space velocities. We have been carrying out a SALT/HRS survey of hydrogen-depleted subdwarfs to discover new members of the class, and hope to report early results at this meeting.
24. Kniazev, Alexei (SALT, SAAO):
    "Using SALT as a powerful spectral data-machine" Show abstract
    I will overview some of my observational SALT programs where big amount of observational data were obtained. Some analysis of these data will be presented.
25. Kotze, Marissa (SAAO/SALT)
26. Kotze, Enrico (SAAO):
    "Using the SALT to investigate the accretion flow in the magnetic cataclysmic variable CTCV J1928-5001" Show abstract
    We present phase-resolved observations of the magnetic cataclysmic variable CTCV J1928-5001 obtained with the long-slit spectroscopic mode of the Robert Stobie Spectrograph on the Southern African Large Telescope. These observations are used in a multi-tomography analysis to investigate the accretion flow in this interacting binary.
27. Mattila, Seppo (University of Turku):
    "TBA" Show abstract
    TBA
28. Mikołajewska, Joanna (N. Copernicus Astronomical Center):
    "Very old and old novae with SALT" Show abstract
    TBA
29. Miszalski, Brent (SALT/SAAO):
    "New insights into the late stages of binary stellar evolution with SALT" Show abstract
    I will give an overview of recent work with SALT that gives new information on various aspects of the late stages of binary stellar evolution. Highlights include the discovery of the second known binary Wolf-Rayet central star of a planetary nebula (PN) in NGC 5189, the identification of a barium central star in PN Hen2-39, characterisation of an eclipsing dwarf nova in an ancient nova shell and revealing several new Galactic and Magellanic symbiotic stars.
30. Molenda-Żakowicz, Joanna (Uniwersytet Wrocławski)
31. Monageng, Itumeleng (South African Astronomical Observatory/University of Cape Town):
    "On the relationship between disc variation and X-ray outbursts in Be/X-ray binaries" Show abstract
    Be/X-ray binary systems are a subclass of high mass X-ray binary stars. These systems are composed of a non-supergiant B-type star whose spectra has (or had at some time) shown Balmer emission lines, and a neutron star which accretes material from the circumstellar disc around the Be star. Optical spectroscopy is used to study the behaviour of the circumstellar disc around the Be star and how it affects the mass accretion process onto the neutron star, leading to X-ray outbursts. Results from spectroscopic monitoring of systems in the Southern Hemisphere (obtained with SALT) and those in the Northern Hemisphere (obtained with the Liverpool telescope) will be presented. This, together with X-ray data, will be discussed to demonstrate how the varying properties (e.g size and density) of the circumstellar disc influences the different types of X-ray outbursts. The analysis of the data is carried out in the framework of the viscous decretion disc model, which predicts that circumstellar discs are truncated by resonant torques as a result of the neutron star orbiting around the Be star.
32. Moździerski, Dawid (Instytut Astronomiczny UWr)
33. Mróz, Przemek (Warsaw University Observatory):
    "OGLE and novae" Show abstract
    The long-term monitoring of the densest regions of the sky by the OGLE survey allows for unprecedented studies of variable stars, including classical novae and CVs. I will present the most important findings, like the discovery of a dwarf nova undergoing a classical nova eruption and nova population studies.
34. Niedzielski, Andrzej (Toruń Centre for Astronomy):
    "PennState-Toruń Planet Search" Show abstract
    TBA
35. Patat, Nando (ESO):
    "Getting time on ESO telescopes: present and future" Show abstract
    In my talk I will discuss current and future time allocation procedures for ESO telescopes and present an extensive statistical study on proposal peer-review based on data collected over about 15,000 proposals.
36. Pilecki, Bogumił (Centrum Astronomiczne im. Mikołaja Kopernika PAN):
    "Mass determination for SB1 systems with pulsating components" Show abstract
    We show that it is possible to determine masses of components in eclipsing single-lined binary systems if one of the component is a radially pulsating star. We explain the method and present a solution for one such system.
37. Potter, Stephen (South African Astronomical Observatory):
    "SALT spectro-polarimety from CVs to BLAZARS" Show abstract
    I will present commissioning science results demonstrating the capabilities of polarimetry with SALT.
38. Ratajczak, Milena (University of Wrocław, Poland):
    "Eclipsing binaries through the prism of SALT" Show abstract
    Detached eclipsing binary systems can serve as test beds for advanced stellar structure and evolution models. The results of studies of a broad variety of binaries observed with HRS/SALT will be presented.
39. Raychaudhury, Somak (IUCAA)
40. Sarna, Marek (Nicolaus Copernicus Astronomical Center PAS)
41. Sarre, Peter (The University of Nottingham, UK):
    "Small-scale structure of the diffuse interstellar medium" Show abstract
    Optical absorption studies of atoms, molecules and diffuse band carriers in the diffuse interstellar medium provide a valuable probe of the spatial distribution of interstellar gas and dust. We report studies of small-scale structure investigated using SALT and other telescopes, with particular emphasis on binary and multiple star systems.
42. Shara, Michael (American Museum of Natural History):
    "SALT- LSST-Cataclysmic Variables" Show abstract
    TBA
43. Średzińska, Justyna (Nicolaus Copernicus Astronomical Center, PAS,Warsaw):
    "Long term observations of quasars with SALT" Show abstract
    Structure of the Universe currently presented consists of 5% of the well-known matter and in 95% of the invisible and unknown substances: dark matter and dark Energy. This last and the dominant component is the most difficult to understand, that why we need direct evidence for its existence.The key to this problem is to correctly determine the distance to various objects, because there is a strong relationship between the geometry of space and contained in it matter. For many years astronomers used for this purpose supernovae Type Ia, however, is not enough. We need different methods and tools to measure the distribution of dark energy. This project is based on observations from SALT (RSS-Robert Stobie Spectrograph), we work with quasars, they turn out to be good objects for this purpose (Watson et al. 2011 Czerny et al. 2013 Marziani & Sulentic 2013, 2014; Wang et al. 2013; Hoenig 2014, Yoshii et al.2014). Quasars are very bright centres of active galactic nuclei, which we can observe in a wide redshift range (large distances). They are not standard candles, but their use is based on the determination of the absolute luminosity for each of them. This can be achieved for example by measuring the time delay between the variable nuclear continuum and the emission lines, as confirmed by the delay measurement of the Hbeta line done for nearby AGNs. The time delays in quasars are of the order of a few years, so the project requires sparse monitoring over an extended period of time. We monitor intermediate redshift quasars (at redshift around 1), which requires using the MgII line. Only a handful measurements of Mg II delays was obtained so far, and never for such a large redshift. Observations performed so far with SALT showed that we achieve the requested accuracy (below 2 per cent) of the MgII measurement, and the simulations indicate that the program can provide accuracy of 0.12 MAG in the distance modulus for each single quasar. High-quality spectra from SALT allow for a very detailed modelling of the line shape, and the additional surprise obtained from our monitoring is an extremely fast line shift in one of the monitored quasars. I would like to present newest and encouraging results obtain by SALT.
44. Taormina, Mónica (Nicolaus Copernicus Astronomical Center, Warsaw):
    "Early-type eclipsing binaries in the LMC" Show abstract
    TBA
45. Tomov, Toma (Toruń Centre for Astronomy):
    "SALT Spectroscopy of WR48a reveals evolution of the optical emission of the most X-ray luminous Wolf-Rayet star in the Galaxy" Show abstract
    We present the first results from analysis of the new (2017 January) moderate-resolution SALT spectrum of the Wolf-Rayet star WR 48a, a long-period episodic dust-maker. Comparison with the previous SALT spectrum (2012 May) reveals increased emission in the blue spectral region which likely indicates a decrease of the optical extinction to this object. Similar indication comes from analysis of the X-ray emission (Swift) from this colliding-wind binary. Stellar atmosphere modelling of the optical emission of WR48a is under way.
46. Townsend, Lee (University of Cape Town):
    "Massive X-ray binaries through the eye of SALT" Show abstract
    Observations of Southern Galactic and Magellanic X-ray binaries with SALT have helped to understand several different aspects of their behaviour. This presentation summarises some recent results utilising a variety of SALT observations of Be/X-ray binaries, with particular focus on our high-resolution spectroscopic analysis of 4 Galactic systems. We present the radial velocity profiles and binary solutions of these systems and discuss how these results fit with what we know about the formation mechanisms and evolutionary pathways taken by these systems.
47. Vaisanen, Petri (SALT/SAAO):
    "SALT: current status and future" Show abstract
    TBA
48. Williams, Ted (SAAO):
    "High-Resolution Imaging Spectroscopy of Galaxies with SALT" Show abstract
    The high spectral resolution mode of the imaging Fabry-Perot spectrometer on the Robert Stobie Spectrograph has been commissioned. We present early scientific results of the determination of velocity fields in several spiral galaxies. We also present maps of of line strength ratios for the Halpha and [NII] lines for these galaxies. We will discuss some of the technical challenges that have been overcome to put this mode of the instrument into operation. We give guidance to SALT partners for proposing observations and analyzing the data from this instrument.
49. Wolf, Stefania (Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University):
    "Short-term variations of Halpha and Hbeta line in RS Oph" Show abstract
    TBA
50. Woudt, Patrick (University of Cape Town):
    "MeerKAT, MeerLICHT and SALT" Show abstract
    TBA
51. Wyrzykowski, Łukasz (Warsaw University Astronomical Observatory):
    "Transient sky from Gaia and OGLE" Show abstract
    Gaia and OGLE are long-term and large-scale photometric surveys, delivering thousands of transient events, including supernovae, microlensing events, cataclysmic variables, tidal disruption events, etc. I will describe the surveys, present the results and address the importance of SALT follow-up in studies of these transients.
52. Żywucka-Hejzner, Natalia (Astronomical Observatory of the Jagiellonian University):
    "OGLE blazars behind Small and Large Magellanic Clouds" Show abstract
    We report blazar candidates behind the Large and Small Magellanic Clouds. Both Flat Spectrum Radio Quasar and BL Lacreate objects are selected based on long-term, multi-colour OGLE-III and OGLE-IV data. We cross-correlate the optical catalogue of quasars behind the Magellanic Clouds with radio data at 6 frequencies from 0.8 to 20 GHz. Among the 1654 objects visible in optical range, we identify a sample of 44 blazar candidates, i.e. 27 flat spectrum radio quasars and 17 BL Lacertae. We examine selected objects with the respect to their radio, optical, and mid-infrared properties. Most of the selected sources are newly detected FSRQ and BL Lac blazar candidates.