Results 51 to 60 of about 7,790 (232)
The quest for planets around subdwarfs and white dwarfs from Kepler space telescope fields [PDF]
Astronomy & Astrophysics, 2020 Context. In this study, we independently test the presence of an exoplanet around the binary KIC 9472174, which is composed of a red dwarf and a pulsating type B subdwarf.
J. Krzesinski +3 more
semanticscholar +1 more source
The magnetic fields of hot subdwarf stars [PDF]
, 2012 Detection of magnetic fields has been reported in several sdO and sdB stars. Recent literature has cast doubts on the reliability of most of these detections.
Bagnulo +16 more
core +1 more source
Primeval very low-mass stars and brown dwarfs – IV. New L subdwarfs, Gaia astrometry, population properties, and a blue brown dwarf binary [PDF]
Monthly notices of the Royal Astronomical Society, 2018 We present 27 new L subdwarfs and classify five of them as esdL and 22 as sdL. Our L subdwarf candidates were selected with the UKIRT Infrared Deep Sky Survey and Sloan Digital Sky Survey. Spectroscopic follow-up was carried out primarily with the OSIRIS
Z. Zhang +21 more
semanticscholar +1 more source
A FEROS Survey of Hot Subdwarf Stars
Open Astronomy, 2018 We have completed a survey of twenty-two ultraviolet-selected hot subdwarfs using the Fiber-fed Extended Range Optical Spectrograph (FEROS) and the 2.2-m telescope at La Silla. The sample includes apparently single objects as well as hot subdwarfs paired
Vennes Stéphane +2 more
doaj +1 more source
The EC14026 Stars — Pulsating Hot Subdwarfs [PDF]
Symposium - International Astronomical Union, 1998 The Edinburgh-Cape Blue Object Survey (Stobie et al. 1997a) is a southern hemisphere survey to discover hot, blue stellar objects brighter than B=18 at galactic latitudes more than 30° from the galactic plane. The main categories of object detected are hot subdwarfs, white dwarfs, blue horizontal branch stars, apparently normal B stars, cataclysmic ...
C. Koen +3 more
openaire +1 more source
Chemical Properties of the Local Galactic Disk and Halo. I. Fundamental Properties of 1544 Nearby, High Proper-motion M Dwarfs and Subdwarfs [PDF]
Astronomical Journal, 2019 Due to their ubiquity and very long main-sequence lifetimes, M dwarfs provide an excellent tool to study the formation and chemical enrichment history of our Galaxy.
N. Hejazi +4 more
semanticscholar +1 more source
Hot Subdwarfs in the Galactic Bulge [PDF]
The Astrophysical Journal, 2005 Recent observations and theories suggest that extreme horizontal branch (EHB) stars and their progeny should be the cause of the UV excess seen in the spectra of many elliptical galaxies. Since the Galactic Bulge is the closest representation of an old, metal-rich spheroid in which we are able to study the EHB scenario in detail, we obtained spectra of
Busso, Giorgia +4 more
openaire +3 more sources
The fastest hot subdwarfs revisited
Bulletin de la Société Royale des Sciences de Liège, 2023 9 page, 6 figures, accepted for publication in Bulletin de la Societ Royale des Sciences de Liege, poceedings of the conference "10th Meeting on Hot Subdwarfs and Related Objects"
MUCHFUSS collaboration, Ulrich Heber
openaire +3 more sources
A search for heavy-metal stars: abundance analyses of hot subdwarfs with Subaru★ [PDF]
Monthly notices of the Royal Astronomical Society, 2019 The discovery of extremely zirconium- and lead-rich surfaces amongst a small subgroup of hot subdwarfs has provoked questions pertaining to chemical peculiarity in hot star atmospheres and about their evolutionary origin. With only three known in 2014,
N. N., C. Jeffery, V. Woolf
semanticscholar +1 more source
New observations and asteroseismic analysis of the subdwarf B pulsator PG 1219+534
Open Astronomy, 2018 We present a new asteroseismic modeling of the hot B subdwarf (sdB) pulsator PG 1219+534, based on a 3- month campaign with the Mont4K/Kuiper combination at Mt Bigelow (Arizona) and on updated atmospheric parameters from high S/N low and medium ...
Van Grootel Valérie +5 more
doaj +1 more source