Splinter Meeting HotStars

Hot stars in the Gaia era

Time: Thursday September 15, 14:00-15:45 and 16:15-18:00 and Friday September 16, 14:00-15:45 CEST (UTC+2)

Room: SFG 1030 / virtual HotStars

Convenor(s): Nicole Reindl, Veronika Schaffenroth [1], Patrick Neunteufel [2], Andreas Sander [3]
[1] Universität Potsdam, [2] Max-Planck-Institut für Astrophysik Garching, [3] Zentrum für Astronomie der Universität Heidelberg

This splinter meeting will focus on hot stars, including both massive and luminous objects like OB-type stars, Wolf-Rayet stars, and B[e] stars, as well as intermediate mass stars in their late hot evolutionary stages, like sdOB stars, central stars of planetary nebulae, and hot white dwarfs. Studying those stars and their environment is essential for understanding key problems of current astrophysics, like the formation of massive stars, radiation-driven winds, close binary interactions, and the final stages of stellar evolution. Hot, massive stars and their feedback are important drivers for the evolution and chemical enrichment in galaxies. Hot evolved stars are key objects to disentangle the various evolutionary pathways of intermediate mass stars, to find out about the fate of exosolar planets, or to search for progenitors and survivors of SN Ia. The Gaia space mission has allowed us now for the first time to search for these special objects in a targeted manner, to derive their radii and masses and hence, to critically test evolutionary models. In this splinter meeting we wish to gather the hot star community to present and discuss recent advances made possible by the Gaia mission and how upcoming Gaia data releases will impact the research in our field. We are welcoming contributions in the form of talks and posters from both observers and theorists, and encourage in particular early career scientists to apply.


Thursday September 15, 14:00-15:45 Hot stars in the Gaia era (SFG 1030 / virtual HotStars)

14:05  Koushik Sen:
Nuclear-timescale reverse Algol evolution and hydrogen-rich Wolf-Rayet stars from very massive binaries

14:25  Christoph Schürmann:
Population synthesis of massive stars with compact companions in the SMC

14:45  Lukas Stock:
Stellar multiplicity studies of B stars using multiple observation methods and radial velocity analysis

15:05  Marie Scheffen:
Radial velocity variability of red giants and blue horizontal branch stars

15:25  Ramon Jaeger:
Eclipse timing variation of hot subdwarf binaries

Thursday September 15, 16:15-18:00 Hot stars in the Gaia era (SFG 1030 / virtual HotStars)

16:15  Fabian Mattig:
Radial velocity study of hot subdwarf stars from SDSS

16:35  Harry Dawson:
A volume-complete sample of hot subluminous stars out to 500 pc using Gaia

16:55  Sebastian Weich:
Kinematic analysis of faint blue stars in the MMT HVS survey

17:15  Henry Willems:
Hunting for the progenitors of helium white dwarfs

17:35  Max Pritzkuleit:
HE 1518-0948 a potential supernova-ejected runaway

Friday September 16, 14:00-15:45 Hot stars in the Gaia era (SFG 1030 / virtual HotStars)

14:00  Roel Lefever:
The Why and How of Improvements on Wolf-Rayet Star Atmospheres.

14:20  Matheus Bernini Peron:
Spectroscopic Evidence for Weaker Clumping and X-ray Emission Cool B-Supergiants

14:40  Cormac Larkin:
Fundamental stellar parameters for 222 B-type stars for the X-shooter Spectral Library

15:00  Semih Filiz:
Spectral analysis of hot DA- and DAO-type white dwarfs

15:20  Ayesha Arshad Arain:
A peek into the Hot subdwarfs through the lens of the SEDs

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