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pro vyhledávání: '"Early type stars"'
Akademický článek
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Autor:
C. Erba, C. P. Folsom, A. David-Uraz, G. A. Wade, S. Seadrow, S. Bellotti, L. Fossati, V. Petit, M. E. Shultz
Publikováno v:
The Astrophysical Journal, Vol 977, Iss 1, p 84 (2024)
HD 54879 is the most recently discovered magnetic O-type star. Previous studies ruled out a rotation period shorter than 7 yr, implying that HD 54879 is the second most slowly rotating known magnetic O-type star. We report new high-resolution spectro
Externí odkaz:
https://doaj.org/article/dcd9c7339f7840d1a002dd6c72917489
Autor:
Fu-Xing Li, Sheng-Bang Qian, Li-ying Zhu, Wen-Ping Liao, Er-gang Zhao, Min-Yu Li, Qi-Bin Sun, Lin-Feng Chang, Wen-Xu Lin
Publikováno v:
The Astrophysical Journal, Vol 976, Iss 2, p 158 (2024)
The massive semidetached binary with a long-term decreasing orbital period may involve a rapid mass-transfer phase in Case A, and thus, they are good astrophysical laboratories for investigating the evolution of massive binary stars. In this work, by
Externí odkaz:
https://doaj.org/article/54119f780f784c31bb4b74f37d0207fe
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 275, Iss 2, p 24 (2024)
In this work, we update the catalog of OB stars based on the Large Sky Area Multi-Object Fiber Spectroscopic Telescope data release 7 and modify the OB stars’ selection criteria in spectral line indices’ space. The new catalog includes 37,778 spe
Externí odkaz:
https://doaj.org/article/9eb1f60d2aa2494d948440532df3cdb2
Publikováno v:
The Astrophysical Journal, Vol 975, Iss 1, p 153 (2024)
The spin–orbit alignment of binary stars traces their formation and accretion history. Previous studies of spin–orbit alignment have been limited to small samples, slowly rotating solar-type stars, and/or wide visual binaries that not surprisingl
Externí odkaz:
https://doaj.org/article/9ae3a32dc79a4d69a8df71a2b2783f26
Publikováno v:
The Astrophysical Journal, Vol 974, Iss 2, p 267 (2024)
Main-sequence radio pulse emitters (MRPs) are magnetic early-type stars that produce coherent radio emission observed in the form of periodic radio pulses. The emission mechanism behind this is the electron-cyclotron maser emission (ECME). Among all
Externí odkaz:
https://doaj.org/article/82c7b67f40314d629d8089dd79545683
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 275, Iss 1, p 2 (2024)
In order to explore how the ubiquitous stochastic low-frequency (SLF) variability of O-type stars is related to various stellar characteristics, we compiled a sample of 150 O-type stars observed via ground-based spectroscopic surveys, alongside photo
Externí odkaz:
https://doaj.org/article/652dc1ebfcc340b0becb59c6d00d1346
Publikováno v:
The Astrophysical Journal, Vol 972, Iss 1, p 119 (2024)
The detection of O- and B-type stars with extremely low-mass companions is very important for understanding the formation and evolution of binary stars. However, finding them remains a challenge because the low-mass components in such systems contrib
Externí odkaz:
https://doaj.org/article/c42b5ca5eeba41f9a75d70abc022dac7
Publikováno v:
The Astrophysical Journal, Vol 971, Iss 2, p 166 (2024)
UV wind-line variability in OB stars appears to be universal. In order to quantify this variation and to estimate its effect on a mass-loss rate determined from a single observation, we use the International Ultraviolet Explorer archive to identify n
Externí odkaz:
https://doaj.org/article/5b14d7548b2242858d1f32ff206a0c8c
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 273, Iss 1, p 5 (2024)
The Tarantula Nebula (30 Doradus, 30 Dor) is the most important star-forming complex in the Local Group, offering a microscope on starburst astrophysics. At its heart lies the exceptionally rich young stellar cluster R136, containing the most massive
Externí odkaz:
https://doaj.org/article/b8cc85d4b0a64d48a290b3bf80a29b49