Zobrazeno 1 - 10
of 118
pro vyhledávání: '"Vos Joris"'
Autor:
Vos Joris, Vučković Maja
Publikováno v:
Open Astronomy, Vol 26, Iss 1, Pp 275-279 (2017)
One of the important issues regarding the final evolution of stars is the impact of binarity. A rich zoo of peculiar, evolved objects are born from the interaction between the loosely bound envelope of a giant, and the gravitational pull of a compani
Externí odkaz:
https://doaj.org/article/dee2e3f3b9d148bd91db8fd752725041
Autor:
Arancibia-Rojas, Eduardo, Zorotovic, Monica, Vučković, Maja, Bobrick, Alexey, Vos, Joris, Piraino-Cerda, Franco
Hot subdwarf B (sdB) stars are helium core burning stars that have lost almost their entire hydrogen envelope due to binary interaction. Their assumed canonical mass of $\rm M_{\mathrm{sdB}}\sim0.47 M_{\odot}$ has recently been debated given a broad
Externí odkaz:
http://arxiv.org/abs/2312.09920
Autor:
Lei, Zhenxin, He, Ruijie, Nemeth, Peter, Vos, Joris, Zou, Xuan, Hu, Ke, Xiao, Huaping, Yan, Huahui, Zhao, Jingkun
222 hot subdwarf stars were identified with LAMOST DR8 spectra, among which 131 stars show composite spectra and have been decomposed, while 91 stars present single-lined spectra. Atmospheric parameters of all sample stars were obtained by fitting Hy
Externí odkaz:
http://arxiv.org/abs/2211.12323
Autor:
Uzundag, Murat, Jones, Matias I., Vučković, Maja, Vos, Joris, Bobrick, Alexey, Paladini, Claudia
Publikováno v:
A&A 668, A89 (2022)
The current theory predicts that hot subdwarf binaries are produced from evolved low-mass binaries that have undergone mass transfer and drastic mass loss during either a common envelope phase or a stable Roche lobe overflow while on the red giant br
Externí odkaz:
http://arxiv.org/abs/2209.08971
Autor:
Bobrick, Alexey, Iorio, Giuliano, Belokurov, Vasily, Vos, Joris, Vuckovic, Maja, Giacobbo, Nicola
RR Lyrae are a well-known class of pulsating horizontal branch stars widely used as tracers of old, metal-poor stellar populations. However, mounting observational evidence shows that a significant fraction of these stars may be young and metal-rich.
Externí odkaz:
http://arxiv.org/abs/2208.04332
Autor:
Molina, Francisco, Vos, Joris, Németh, Péter, Østensen, Roy, Vučković, Maja, Tkachenko, Andrew, van Winckel, Hans
Publikováno v:
A&A 658, A122 (2022)
There are 23 long-period binary systems discovered to date that contain a B-type hot subdwarf(sdB) whose orbital parameters have been fully solved. They evolve into O-type subdwarfs (sdO) once the helium burning transitions from the core to the He sh
Externí odkaz:
http://arxiv.org/abs/2110.14339
Publikováno v:
A&A 653, A3 (2021)
A radial velocity follow-up of the long-period sdOB+G1V type spectroscopic binary SB 744 revealed strong lines of fluorine and lead in the optical spectrum of the sdOB star and subsolar metallicity in the G1V companion. With high-quality observations
Externí odkaz:
http://arxiv.org/abs/2107.03270
Autor:
Battaglia, Thomas W., Mimpen, Iris L., Traets, Joleen J.H., van Hoeck, Arne, Zeverijn, Laurien J., Geurts, Birgit S., de Wit, Gijs F., Noë, Michaël, Hofland, Ingrid, Vos, Joris L., Cornelissen, Sten, Alkemade, Maartje, Broeks, Annegien, Zuur, Charlotte L., Cuppen, Edwin, Wessels, Lodewyk, van de Haar, Joris, Voest, Emile
Publikováno v:
In Cell 25 April 2024 187(9):2324-2335
Autor:
Vos, Joris, Pelisoli, Ingrid, Budaj, Jan, Reindl, Nicole, Schaffenroth, Veronika, Bobrick, Alexey, Geier, Stephan, Hermes, J. J., Nemeth, Peter, Østensen, Roy, Reding, Joshua S., Uzundag, Murat, Vuckovic, Maja
Publikováno v:
A&A 655, A43 (2021)
We present the discovery of J22564-5910, a new type of hot subdwarf (sdB) which shows evidence of gas present in the system and has shallow, multi-peaked hydrogen and helium lines which vary in shape over time. All observational evidence points towar
Externí odkaz:
http://arxiv.org/abs/2106.03363
Autor:
Østensen, Roy, Jeffery, C. Simon, Saio, Hideyuki, Hermes, J. J., Telting, John, Vučković, Maja, Vos, Joris, Baran, Andrzej, Reed, Mike
The Kepler spacecraft observed the hot subdwarf star PHL 417 during its extended K2 mission, and the high-precision photometric lightcurve reveals the presence of 17 pulsation modes with periods between 38 and 105 minutes. From follow-up ground-based
Externí odkaz:
http://arxiv.org/abs/2010.02978