Results 101 to 110 of about 5,486 (209)
Ultracool Subdwarfs: Metal-poor Stars and Brown Dwarfs Extending into the Late-type M, L and T Dwarf Regimes [PDF]
, 2004 Adam J. Burgasser +2 more
openalex +1 more source
Fiducial Stellar Population Sequences for the VJKs Photometric System
, 2010 We have obtained broad-band near-infrared photometry for seven Galactic star clusters (M92, M15, M13, M5, NGC1851, M71 and NGC6791) using the WIRCam wide-field imager on the Canada-France-Hawaii Telescope, supplemented by images of NGC1851 taken with ...
Anthony-Twarog +27 more
core +1 more source
Phases of Mass Transfer from Hot Subdwarfs to White Dwarf Companions [PDF]
, 2021 Evan B. Bauer, Thomas Kupfer
openalex
Hot subdwarf formation: Confronting theory with observation
EPJ Web of Conferences, 2013 The formation of hot subdwarf stars is still unclear. Both single-star and binary scenarios have been proposed to explain the properties of these evolved stars situated at the extreme blue end of the horizontal branch. The observational evidence gathered
Geier S.
doaj +1 more source
Analysis of F and G Subdwarfs. III. an Abundance Analysis of the Subdwarf μ Cassiopeia [PDF]
The Astrophysical Journal, 1968 Model atmosphere abundance analysis of subdwarf mu Cassiopeia by measuring spectral line widths and comparing with ...
openaire +2 more sources
Model Spectra of Hot Subdwarfs for the Gaia Mission [PDF]
, 2008 L. Hindson +3 more
openalex +1 more source
High-velocity streams in the Milky Way halo with the SDSS and GSC-II kinematic survey
EPJ Web of Conferences, 2012 We explore the stellar halo of the Milky Way to search for fossil signatures of past mergers, consisting of streams of particles torn from their progenitors during the process of hierarchical merging.
Spagna A. +5 more
doaj +1 more source
Diffusion in hot subdwarf progenitors from the common envelope channel
Open Astronomy, 2017 Diffusion of elements in the atmosphere of a star can drastically affect its surface composition, sometimes leading to unusual mixtures. These chemically peculiar stars can be identified fromthe presence of unusual lines in their spectra.
Byrne Conor M. +3 more
doaj +1 more source
The evolution of a hot subdwarf: observations of the pulsating subdwarf B star Feige~48
, 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
The Astrophysical Journal Supplement SeriesWe conducted an analysis of the abundances of He, C, and N in 210 He-rich hot subdwarfs observed within both the Gaia Data Release 3 (DR3) and LAMOST DR7 data sets.
Yangping Luo +3 more
doaj +1 more source