Results 11 to 20 of about 24,445,127 (303)
, 2007 We compare the recently published BT2 water line list tep{2006MNRAS.368.1087B} with other available lists -- NASA Ames tep{partridge:4618} and SCAN tep{2001A&A...372..249J} -- and examine the impact on hydrostatic as well as dynamic models for cool M-
Lederer, Michael +3 more
core +8 more sources
Infrared Survey of Giant M Stars
Journal of Mathematical and Fundamental Sciences, 2019 . A spectrocospic survey in an area of 5 squares degrees, located in the general direction of the Palomar-Groningen Variable-Star Field 2 , yields 263 Giant M stars.
Bambang Hidajat
doaj +2 more sources
Ultraviolet and Chromospheric Activity and Habitability of M Stars
The Astrophysical JournalM-type stars are crucial for stellar activity studies because they cover two types of magnetic dynamos and are particularly intriguing for habitability studies due to their abundance and long lifespans during the main-sequence stage.
Xue Li +6 more
doaj +3 more sources
An “A star” on an M star during a flare within a flare [PDF]
Proceedings of the International Astronomical Union, 2010 AbstractM dwarfs produce explosive flare emission in the near-UV and optical continuum, and the mechanism responsible for this phenomenon is not well-understood. We present a near-UV/optical flare spectrum from the rise phase of a secondary flare, which occurred during the decay of a much larger flare.
Kowalski, Adam F. +4 more
openaire +2 more sources
ACTIVITY ON THE M STAR OF QS Vir [PDF]
The Astronomical Journal, 2010 We report analysis of VRIJH photometry, and phase-resolved optical spectroscopy of the eclipsing DA white dwarf plus dMe dwarf binary QS Vir. Modeling of the photometric data yields an inclination of $i = 74.9\pm0.6$ and a mass ratio of $q = M_2/M_1 = 0.50\pm0.05$. Our Doppler maps indicate the presence of material in the Roche lobe of the white dwarf,
Ribeiro, T. +3 more
openaire +3 more sources
Theoretical results of one class of multiderivative methods through order stars [PDF]
, 2011 Order stars are applied to Brown (K,L) methods. They are displayed pictorially for a selection of methods and are used to provide succinct proofs of existing results.
Cuminato, Jose +3 more
core +3 more sources
Hot DAVs: a probable new class of pulsating white dwarf stars [PDF]
, 2013 We have discovered a pulsating DA white dwarf at the lower end of the temperature range 45 000–30 000 K where a few helium atmosphere white dwarfs are known. There are now three such pulsators known, suggesting that a new class of theoretically predicted
Gansicke, B. T. +21 more
core +1 more source
Dust Formation in M-Stars [PDF]
Symposium - International Astronomical Union, 1987 A mechanism is proposed for the initiation of dust formation in stellar winds of M-type giants and supergiants. If Mg and Fe are ionized (M0…M4) dust formation is initiated by homogeneous nucleation of SiO, otherwise (later ≍ M2) by homogeneous nucleation of MgS. The condensation temperatures for these mechanisms agree well with observations.
openaire +1 more source
The Astronomical Journal, 2002 We carried out a search for M-type Vega-like stars by correlating the IRAS Faint Source Catalog with Hipparcos selected M-type stars. Three stars with apparent IRAS 25mu excess emission are shown instead to be non-IR-excess stars from ground-based 11.7 and 17.9mu photometry.
Song, Inseok +4 more
openaire +2 more sources