Results 101 to 110 of about 4,387 (203)

Tidal Spin-up of Subdwarf B Stars

The Astrophysical Journal
Hot subdwarf B (sdB) stars are stripped helium-burning stars that are often found in close binaries, where they experience strong tidal interactions. The dissipation of tidally excited gravity waves alters their rotational evolution throughout the sdB ...
Linhao Ma, Jim Fuller
doaj   +1 more source

Concluding remarks

EPJ Web of Conferences, 2013
Precision asteroseismic observations with the Kepler and CoRot satellites enable the internal structure and evolution of pulsating stars to be more exhaustively studied than has hitherto been possible.
Lynas-Gray A.E.
doaj   +1 more source

News From The Erebos Project

Open Astronomy, 2017
Planets and brown dwarfs in close orbits will interact with their host stars, as soon as the stars evolve to become red giants. However, the outcome of those interactions is still unclear.
Schaffenroth Veronika, Barlow Brad, Geier Stephan, Vučković Maja, Kilkenny Dave, Schaffenroth Johannes   +5 more
doaj   +1 more source

A survey of hot subdwarf pulsators in ω Cen

EPJ Web of Conferences, 2013
We recently discovered an apparently new class of pulsating Extreme Horizontal Branch (EHB) star in ω Cen. Tightly clustered around ∼50,000 K, these H-rich sdO stars exhibit rapid, multi-periodic oscillations on a timescale of 100 s.
Catelan M., Monelli M., Alonso M.L., Green E.M., Fontaine G., Calamida A., Randal S.K., Bono G., Dhillon V.S., Marsh T.R.   +9 more
doaj   +1 more source

News on the X-ray emission from hot subdwarf stars

Open Astronomy, 2017
In latest years, the high sensitivity of the instruments on-board the XMM-Newton and Chandra satellites allowed us to explore the properties of the X-ray emission from hot subdwarf stars.
Palombara Nicola La, Mereghetti Sandro
doaj   +1 more source

HST spectroscopy of chemically peculiar hot subdwarfs: PG 0909+276 and UVO0512–08

Open Astronomy, 2017
High-resolution ultraviolet spectroscopy of two chemically peculiar hot subdwarfs, PG 0909+276 and UVO0512-08, has been obtained using the Hubble Space Telescope.
Wild James, Jeffery Christopher Simon
doaj   +1 more source

A Series of Subdwarf Atmospheres.

The Astrophysical Journal Supplement Series, 1961
A series of model stellar atmospheres, representing stars of low heavy- element content, is tabulated. Characteristics of the continua of the models, including (U,B,V) colors and bolometric corrections, are discussed and compared with observations. (auth)
Thomas L. Swihart, David Fischel
openaire   +1 more source

The massive hot subdwarf binary LAMOST J065816.72+094343.1

Astronomy & Astrophysics
Context. Massive short-period binaries involving hot subdwarf stars (sdO/Bs) are rare but very relevant to constraining pathways for binary star evolution.
Mattig F., Barlow B. N., Liu D., Dorsch M., Geier S., Pritzkuleit M., Dawson H., Wang B., Schaffenroth V., Kupfer T., Derbyshire C., Barocci-Faul S.   +11 more
doaj   +1 more source

On the 3He anomaly in hot subdwarf B stars

Open Astronomy, 2017
Decades ago, 3He isotope enrichment in helium-weak B-type main-sequence, in blue horizontal branch and in hot subdwarf B (sdB) stars, i.e., helium-core burning stars of the extreme horizontal branch, were discovered. Diffusion processes in the atmosphere
Schneider David, Irrgang Andreas, Heber Ulrich, Nieva Maria F., Przybilla Norbert   +4 more
doaj   +1 more source

Discovery of [CLC][ITAL]p[/ITAL][/CLC]-Mode Instabilities in the Hot Subdwarf B Star PG 1047+003 [PDF]

, 1997
M. Billères, G. Fontaine, P. Brassard, S. Charpinet, James Liebert, R. A. Saffer, G. Vauclair   +6 more
openalex   +1 more source