Results 41 to 50 of about 694 (118)

A comprehensive search for hot subdwarf stars using Gaia and TESS

open access: yesAstronomy & Astrophysics
Hot subdwarf B (sdB) stars are evolved, subluminous, helium-burning stars that most likely form when red giant stars loose their hydrogen envelope via interactions with close companions. They play an important role in our understanding of binary evolution, stellar atmospheres, and interiors.
Murat Uzundag   +7 more
openaire   +3 more sources

The evolution of a hot subdwarf: observations of the pulsating subdwarf B star Feige~48

open access: yes, 2003
Since pulsating subdwarf B (sdBV or EC14026) stars were first discovered (Kilkenny et al, 1997), observational efforts have tried to realize their potential for constraining the interior physics of extreme horizontal branch (EHB) stars. Difficulties encountered along the way include uncertain mode identifications and a lack of stable pulsation mode ...
Reed, M. D.   +2 more
openaire   +2 more sources

Hot subdwarf stars and their connection to thermonuclear supernovae [PDF]

open access: diamond, 2016
Stephan Geier   +12 more
openalex   +1 more source

Follow-up observations of X-ray emitting hot subdwarf stars: the He-rich sdO BD +37° 1977 [PDF]

open access: bronze, 2015
N. La Palombara   +4 more
openalex   +1 more source

The composition of Kapteyn's star and the M subdwarfs.

open access: yesThe Astrophysical Journal, 1976
The metal abundance of the nearby M subdwarf Kapteyn's star is obtained from a 10 A mm/sup -1/ spectrum in the near-infrared. The weighted mean value of (M/H) is -0.55 +- 0.15 (p.e.), confirming an earlier estimate from the strength of the TiO bands. The O/C ratio in Kapteyn's star is within a factor of 2 of the solar value.
openaire   +1 more source

Optical spectroscopy of high proper motion stars: new M dwarfs within 10 pc and the closest pair of subdwarfs [PDF]

open access: green, 2006
C. Reylé   +4 more
openalex   +1 more source

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