Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Latour, Marilyn"'
Autor:
Su, Wenchao, Charpinet, Stéphane, Latour, Marilyn, Zong, Weikai, Green, Elizabeth M, Li, Gang
We present the detailed analysis of a new hybrid (p- and g-mode) sdB pulsator, TIC441725813 (TYC 4427-1021-1), discovered and monitored by TESS over 670 days. The TESS light curves available for this star were analysed using prewhitening techniques t
Externí odkaz:
http://arxiv.org/abs/2407.17887
Autor:
Häberle, Maximilian, Neumayer, Nadine, Bellini, Andrea, Libralato, Mattia, Clontz, Callie, Seth, Anil C., Nitschai, Maria Selina, Kamann, Sebastian, Alfaro-Cuello, Mayte, Anderson, Jay, Dreizler, Stefan, Feldmeier-Krause, Anja, Kacharov, Nikolay, Latour, Marilyn, Milone, Antonino, Pechetti, Renuka, van de Ven, Glenn, Voggel, Karina
Publikováno v:
ApJ 970 192 (2024)
Omega Centauri ($\omega$ Cen) is the most massive globular cluster of the Milky Way. It is thought to be the nucleus of an accreted dwarf galaxy because of its high mass and its complex stellar populations. To decipher its formation history and study
Externí odkaz:
http://arxiv.org/abs/2404.03722
Autor:
Martens, Sven, Kamann, Sebastian, Dreizler, Stefan, Göttgens, Fabian, Husser, Tim-Oliver, Latour, Marilyn, Balakina, Elena, Krajnović, Davor, Pechetti, Renuka, Weilbacher, Peter M.
Publikováno v:
A&A 671, A106 (2023)
The formation process of multiple populations in globular clusters is still up for debate. Kinematic differences between the populations are particularly interesting in this respect, because they allow us to distinguish between single-epoch formation
Externí odkaz:
http://arxiv.org/abs/2301.08675
Autor:
Husser, Tim-Oliver, Latour, Marilyn, Brinchmann, Jarle, Dreizler, Stefan, Giesers, Benjamin, Göttgens, Fabian, Kamann, Sebastian, Roth, Martin M., Weilbacher, Peter M., Wendt, Martin
Publikováno v:
A&A 635, A114 (2020)
Aims. We use the spectra of more than 30,000 red giant branch (RGB) stars in 25 globular clusters (GC), obtained within the MUSE survey of Galactic globular clusters, to calibrate the Ca II triplet (CaT) metallicity relation and derive metallicities
Externí odkaz:
http://arxiv.org/abs/2001.07725
Autor:
Kamann, Sebastian, Giesers, Benjamin, Bastian, Nate, Brinchmann, Jarle, Dreizler, Stefan, Göttgens, Fabian, Husser, Tim-Oliver, Latour, Marilyn, Weilbacher, Peter M., Wisotzki, Lutz
Publikováno v:
A&A 635, A65 (2020)
We investigate the binary content of the two stellar populations that coexist in the globular cluster NGC 3201. Previous studies of binary stars in globular clusters have reported higher binary fractions in their first populations (P1, having field-l
Externí odkaz:
http://arxiv.org/abs/1912.01627
Autor:
Giesers, Benjamin, Kamann, Sebastian, Dreizler, Stefan, Husser, Tim-Oliver, Askar, Abbas, Göttgens, Fabian, Brinchmann, Jarle, Latour, Marilyn, Weilbacher, Peter M., Wendt, Martin, Roth, Martin M.
Publikováno v:
A&A 632, A3 (2019)
We utilize multi-epoch MUSE spectroscopy to study binaries in the core of NGC 3201. Our sample consists of 3553 stars with 54883 spectra in total comprising 3200 main-sequence stars up to 4 magnitudes below the turn-off. Each star in our sample has b
Externí odkaz:
http://arxiv.org/abs/1909.04050
Publikováno v:
A&A 629, A148 (2019)
The intermediate He-enriched hot subdwarf star Feige 46 was recently reported as the second member of the V366 Aqr (or He-sdOBV) pulsating class. Feige 46 is very similar to the prototype of the class, LS IV$-$14116, not only in terms of pulsational
Externí odkaz:
http://arxiv.org/abs/1908.04587
Publikováno v:
A&A 630, A130 (2019)
Hot subluminous stars can be spectroscopically classified as subdwarf B (sdB) and O (sdO) stars. While the latter are predominantly hydrogen deficient, the former are mostly helium deficient. The atmospheres of most sdOs are almost devoid of hydrogen
Externí odkaz:
http://arxiv.org/abs/1907.07781
Autor:
Van Grootel, Valerie, Randall, Suzanna K., Latour, Marilyn, Németh, Peter, Fontaine, Gilles, Brassard, Pierre, Charpinet, Stephane, Green, Elizabeth M.
Pulsating hot B subdwarf (sdB) stars, which are core-He burning objects, are one of the showcases of asteroseismology. Thanks to the combination of rich pulsation spectra and state-of-the-art modeling tools it is possible to tightly constrain fundame
Externí odkaz:
http://arxiv.org/abs/1905.00654
Autor:
Schindewolf, Markus, Nemeth, Peter, Heber, Ulrich, Battich, Tiara, Bertolami, Marcello Miller, Irrgang, Andreas, Latour, Marilyn
Hot subdwarfs represent a poorly understood late phase of stellar evolution. While binary evolution plays an important role for B-subdwarfs (sdB), the origin of the He dominated O-subdwarfs (He-sdO) is unknown. We search for chemical signatures of th
Externí odkaz:
http://arxiv.org/abs/1810.08082