Staff members


Some members of the department. The photo is taken in September 2018.


Physics of Hot Stars group


Michaela Kraus

Michaela Kraus

Michaela is a senior researcher and a head of the Working group Physics of Hot Stars. Her research is dedicated to evolved massive stars with focus on B[e] supergiants, Yellow Hypergiants, Luminous Blue Variables, and classical blue supergiants. She is investigating their pulsation and mass-loss behavior, as well as the dynamics and chemistry of their circumstellar matter and the interaction of the ejected material with the local interstellar medium. For her research she developed several numerical codes that are continuously improved and used to analyze and interpret observational data from the optical up to the radio regime.

Contacts:

Pavel Koubský

Pavel Koubský

Pavel is a emeritus scientis. His main research interests are early-type stars and their rapid variability, close binaries, and Be stars. In past he served as a head of the Stellar Physics department and a head of the Working Group Physics of Hot Stars, He also was the meamber of the Institute Council of the ASU. He was responsible for two upgrades of the Perek 2m telescope in the period 1982-1987 and 1996-1198.

Contacts:
  • email: pavel.koubsky @ asu.cas.cz
  • phone:
  • personal website:

Jiří Kubát

Jiří Kubát

Jiří is a senior researcher. His main research interests are radiative transfer and radiation-matter interactions (NLTE physics), modelling of stellar atmospheres and stellar winds. He is an author of a computer code for calculations of NLTE model stellar atmospheres and their emergent radiation. In past he served as a head of the Stellar Physics department, as a deputy director of the Astronomical Institute, and as a member of the Institute Council. Currently he represents the Czech Republic as a member of the Board of Directors of the international scientific journal Astronomy and Astrophysics.

Contacts:

Petr Škoda

Petr Škoda

Petr is a senior researcher. He has been working at the institute over thirty years. Most of this time was connected with modern astronomical instrumentation, namely CCD detectors, telescope control systems and computers. He has been leading several projects in astroinformatics at Faculty of Information technology of Czech Technical University in Prague and is a propagator and early adopter of the Virtual observatory in Czech Republic. His main interest is CCD spectroscopy of emission line objects, machine learning and analysis of Big Data in astronomy.


Contacts:
  • email: petr.skoda @ asu.cas.cz
  • phone: +420 323 620 361
  • personal website:

Brankica Kubátová

Brankica Kubátová

Brankica is a research scientistis and a head of the Stellar Physics Department. Her main expertise lies in the area of hot, massive stars and their winds. , She is most known for work on the radiative transfer in inhomogeneous (i.e., clumped) stellar winds. Her research aims to test how physical processes in the stellar winds influence mass-loss rates determination. She is also interested in quantitative spectroscopy, i.e., analysing spectroscopic data by means of detailed quantitative modelling in order to determined accurate values of the stellar and winds parameters.


Contacts:

Péter Németh

Peter Nemeth

Peter is a research scientistis. He investigates hot subdwarf stars and binaries. He applies TLUSTY atmosphere models to reproduce ultraviolet and optical spectral observations. His field of research also includes the spectroscopy of chemically peculiar stars, evolved, compact objects, as well as spectral disentangling and the modeling of radiative interactions in close binary systems.




Contacts:

Olga Maryeva

Olga Maryeva

Olga is a research scientistis. Before coming to the Czech Republic, she worked at Russian 6-m telescope (Special Astrophysical observatory), where she defended my PhD in 2016. Her main field is an investigation of evolved massive stars on the stages when the hydrogen is already exhausted in their cores, and the stars are rapidly evolving towards supernova explosion. Her goal is to understand the physics of processes leading to the transition between various evolutionary stages, and the evolutionary links between such groups of objects as Blue Supergiants, Luminous Blue Variables, Red Supergiants and Wolf-Rayet stars.

Contacts:
  • email: olga.maryeva @ asu.cas.cz
  • phone: +420 323 620 141
  • personal website:

Postdocs

Tiina Liimets

Tiina Liimets

Tiina is a postdoc. She investigate the morphology and kinematics of ejecta from evolved stars. Her main expertise lies in analysing the multi-epoch imaging and spectral observations in optical waveband.





Contacts:
  • email: tiina.liimets @ asu.cas.cz
  • phone: +420 323 620 136
  • personal website:

Julieta Sanchez Arias

Julieta Sanchez Arias

Julieta is a postdoc. After obtaining her PhD at La Plata National University in Argentina, Julieta developed her research activities as a postdoc at the Astrophysics Institute of La Plata for one year. Currently, she is a postdoc at the ASU. Her main interest is the study of stellar oscillations through the development of stellar models and the analysis of light curves. At present, she is focused on pulsations of massive stars and its connection with the stellar winds, but she is also interested in pulsating A-F stars, low mass WDs and hot-Jup planets.

Contacts:
  • email: julieta.sanchez @ asu.cas.cz
  • phone: +420 323 620 141
  • personal website:

Extrasolar Planet Research group


Petr Kabáth

Petr Kabáth

Petr is a research scientistis and a head of the Extrasolar Planet Research group. He worked as a postdoctoral fellow and as a staff astronomer at ESO Paranal Observatory for nearly 6 years. He graduated at DLR Berlin, Germany, in 2009. His field of interest is detection and characterization of exoplanetary atmospheres. He was involved in the BEST II project. Currently, he coordinates a radial velocity follow-up with Ondřejov echelle spectrograph (OES) at Perek 2-m telescope.


Contacts:
  • email: petr.kabath @ asu.cas.cz
  • phone: +420 323 620 143
  • personal website:

Marek Skarka

Marek Skarka

Marek is a reserch scientist. After obtaining his PhD at Masaryk University in Brno, CZ, he spent two years at Konkoly Observatory, Hungarian Academy of Sciences, Budapest, HU. His expertise are stellar pulsations, binary stars with pulsating component, and time-series analysis. Currently he works on spectroscopic follow-up observations of exoplanetary candidates.




Contacts:
  • email: marek.skarka @ asu.cas.cz
  • phone: +420 323 620 143
  • personal website:

Marie Karjalainen

Marie Karjalainen

Marie is a research scientist. After her studies at the Charles University in Prague, she worked as a postdoc in Thueringer Landessternwarte Tautenburg. Then she spent over ten years on la Palma in Spain working for the Isaac Newton Group of Telescopes and the Major Atmospheric Gamma Imaging Cherenkov. Her research is devoted to study extrasolar planets. Among her interests are high resolution spectroscopy, accurate stellar radial velocity measurements, detection and characterisation of extrasolar planets and stellar oscillations of red giant stars.


Contacts:
  • email: marie.karjalainen @ asu.cas.cz
  • phone: +420 323 620 164
  • personal website:

Raine Karjalainen

Raine Karjalainen

Raine is a research scientist. He studied in the University of Oulu, Finland. After that he moved to La Palma and worked for more than two years as a staff astronomer at the Nordic Optical Telescope, and for more than ten years as a support astronomer at Isaac Newton Group. His research interest is exoplanets. Main method is radial velocities, which means using high resolution spectroscopy. He is looking for planets and brown dwarfs around giant stars.

Contacts:
  • email: raine.karjalainen @ asu.cas.cz
  • phone: +420 323 620 164
  • personal website:

Postdocs

Tereza Klocová

Tereza Klocova

Tereza is a postdoc. She obtaind her PhD at Masaryk University in Brno, CZ, and now she is a postdoc at the ASU. She is mostly interested in the activity of exoplanetary host stars and radial velocity follow-up of exoplanetary candidates. Currently she also works on the spectroscopic observations and analysis of flaring stars.



Contacts:
  • email: tereza.klocova @ asu.cas.cz
  • phone:
  • personal website:

PhD students

Martin Blažek

Martin Blažek

Martin is a PhD student of Masaryk University in Brno, CZ. He is an active member of the Exoplanet group and works mainly on photometric studies of exoplanets. He deals with detecting primary transits and also exoplanetary atmospheres through secondary eclipses. He is also an observer on 2-m telescope and uses both spectroscopic and photometric mode of the telescope.



Contacts:
  • email: martin.blazek @ asu.cas.cz
  • phone: +420 323 620 141
  • personal website:

Magdalena Špoková

Magdalena Špoková

Magda is a PhD student of Masaryk University in Brno, CZ. Her masters thesis was focused on astrobiology, she was exploring influence of solar wind-like conditions on cyanobacteria. Now she is going to explore composition of exoplaneary atmospheres and to try to find interesting elements there, which might be linked with life. Also she is still cyanobacteria and botanical enthusiast.



Contacts:
  • email: 393635 @ mail.muni.cz
  • phone: +420 323 620 141
  • personal website:

Ján Šubjak

Ján Šubjak

Ján is a PhD student at Charles University, Prague, CZ. He defensed his master degree at Comenius University, Bratislava, SK, where his research was focused on exoplanets. The main goal was observing and analysing of transit light curves, radial velocity curves and to determine parameters of extrasolar systems. In the near future he will work with an echelle spectrograph.



Contacts:
  • email: johnysubjak @ gmail.com
  • phone: +420 323 620 141
  • personal website:

High Energy Astrophysics group


Martin Jelínek

Martin Jelínek

Martin is a research scientistis and a head of the High Energy Astrophysics group. His research areas are gamma-ray bursts, optical transients, and robotic telescopes.








Contacts:

René Hudec

Rene Hudec

René is senior resercher and the former head of the High Energy Astrophysics group. His research interest is focused on high energy astrophysics, both galactic and extragalactic sources, analysing of blazars and gamma-ray bursts, searching for counterparts at optical wavelengths and multispectral analyses, analysing of optical transients of astrophysical origin. Hi is also designer of space and ground-based experiments with emphasis on X-ray optics and X-ray telescopes. He is involved in space projects such as ESA INTEGRAL, Gaia, SMILE and THESEUS. He has extended knowledge of extraction and scientific use of data from astronomical archival plate collections.

Contacts:
  • email: rene.hudec @ asu.cas.cz
  • phone: +420 323 620 128
  • personal website:

Vojtěch Šimon

Vojtěch Šimon

Vojtěch is a reserch scientiest. His research field is astrophysical sources of the high-energy radiation.

(a) X-ray sources: study of X-ray binaries (systems with the neutron star or the black hole accretor), cataclysmic variables, supersoft X-ray sources, analysis of their long-term activity in the X-ray and optical regions (transitions between the high and low states, outbursts,...); analysis of observations of X-ray monitors (ASM/RXTE, BAT/Swift, MAXI/ISS); study of activity on very long timescales using photographic archives; investigation of the dependence of the observed characteristics of these objects on their physical parameters. (b) Investigation of afterglows of gamma-ray bursts, study of their comprehensive properties, analysis of the observed relation of the afterglow and the underlying hypernova or supernova, implications for the environment in their host galaxies.

Contacts:
  • email: vojtech.simon @ asu.cas.cz
  • phone: +420 323 620 347
  • personal website:

Jan Štrobl

Jan Štrobl

Jan was born in Jindřichův Hradec, Czech Republic, in 1977. He studied astronomy and astrophysics at the Charles University in Prague, where he received the M.Sc. (Mgr., 2002) and RNDr. (2010) degrees. His research is focused primarily on a development and operations of autonomous robotic telescopes and related topics (e.g., a wide-field image processing). He is also involved in Gamma-ray bursts and Cataclysmic Variable stars research.



Contacts:
  • email: strobl @ asu.cas.cz
  • phone: +420 323 620 142
  • personal website:

Operation and Development of the Perek 2-m Telescope group


Miroslav Šlechta

Miroslav Šlechta

Miroslav is a head of the Operation and Development of the Perek 2-m Telescope group since October 2008. He is absolvent of Faculty of Mathematics and Physics, Charles University in Prague. The title of his master thesis is „Primordial Perturbations in the Friedmannian Universe“. In 2001 he defended his PhD thesis „Star - Disc Interactions in Active Galactic Nuclei“. Since 1998 he is employed at the ASU. He is a former head of the Stellar Physics Department.

Contacts:

Technicians

Eva Kortusová

Eva Kortusová

Eva is a secretary of the Stellar Physics Department. She is also observation assistant and participates in the service mode observation.








Contacts:
  • email: kortusova @ asu.cas.cz
  • phone: +420 323 620 226

Radek Novotný

Radek Novotný

Radek is co-responsible for the operation of instruments and equipment related to the Perek 2‑m telescope from a mechanical point of view. He participates in the development and construction of devices which support the operation of the telescopes.He also performs work in the field of machine and mechanics and performs maintenance of machines and devices related to the telescope in terms of mechanic. He is observation assistant and participates in the service mode observation.


Contacts:
  • email: novotny @ asu.cas.cz
  • phone: +420 323 620 269

Luděk Řezba

Luděk Řezba

Luděk is responsible for the electrical operation of instruments and equipment related to the Perek 2‑m telescope. He participates in the development and construction of devices which supports the operation of the telescope, performs work in the field of electrical and electrical engineering, performs maintenance of machines and devices related to the telescope from the electrical point of view. He also participates in the observation with the telescope. He is observation assistant and participates in the service mode observation.



Contacts:
  • email: ludek.rezba @ asu.cas.cz
  • phone: +420 323 620 313

Jan Sloup

Jan Sloup

Jan is responsible for the mechanical operation of instruments and equipment related to the Perek 2‑m telescope. He participates in the development and construction of devices which support the operation of the telescopes. He also performs work in the field of machine and mechanics and performs maintenance of machines and devices related to the telescope in terms of mechanic. He is also observation assistant.



Contacts:
  • email: sloup @ asu.cas.cz
  • phone: +420 323 620 259

External collaborators


Jan Fuchs

Jan Fuchs

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Contacts:
  • email: fuky @ asu.cas.cz
  • phone: +420 323 620 241
  • personal website:

Roman Veselý

Roman Veselý

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Contacts:
  • email: roman @ liten.cz
  • phone: +420 ... ... ...
  • personal website: