Results 1 to 10 of about 206,533 (326)

Using limb darkening to measure fundamental parameters of stars [PDF]

Astronomy & Astrophysics, 2012
Context. Limb darkening is an important tool for understanding stellar atmospheres, but most observations measuring limb darkening assume various parameterizations that yield no significant information about the structure of stellar atmospheres. Aims. We
H. R. Neilson, J. B. Lester
core   +6 more sources

Fundamental stellar parameters of benchmark stars from CHARA interferometry -- III. Giant and subgiant stars [PDF]

Astronomy & Astrophysics, 2021
Context.Large spectroscopic surveys of the Milky Way must be calibrated against a sample of benchmark stars to ensure the reliable determination of atmospheric parameters.Aims.Here, we present new fundamental stellar parameters of seven giant and subgiant stars that will serve as benchmark stars for large surveys.
I. Karovicova, T. R. White, Thomas Nordlander, L. Casagrande, Michael Ireland, Daniel Huber   +5 more
semanticscholar   +6 more sources

Fundamental Parameters of Massive Stars [PDF]

EAS Publications Series, 2003
We discuss the determination of fundamental parameters of `normal' hot, massive OB-type stars, namely temperatures, luminosities, masses, gravities and surface abundances.
Crowther, Paul A
core   +7 more sources

Fundamental parameters and infrared excesses of Tycho–Gaia stars [PDF]

Monthly Notices of the Royal Astronomical Society, 2017
43 pages, 50 figures, accepted ...
Iain McDonald, A. A. Zijlstra, R. A. Watson   +2 more
semanticscholar   +8 more sources

Fundamental Parameters of He-Weak and He-Strong Stars [PDF]

Astronomy & Astrophysics, 2007
We carried out low resolution spectroscopic observations in the wavelength range 3400-4700 A of 20 He-weak and 8 He-strong stars to determine their fundamental parameters by means of the Divan-Chalonge-Barbier (BCD) spectrophotometric system.
A. Cruzado, A. F. Torres, Adelman, Barbier, Blackwell, Bressan, Bychkov, Cayrel de Strobel, Chalonge, Chalonge, Chalonge, Cidale, Dimitrijevic, Dimitrijevic, Divan, Divan, Flower, Freudenstein, Gerbaldi, Glagolevskij, Golay, Gómez, Hauck, Hauck, Hubeny, Hubrig, Hunger, J. Zorec, Jaschek, Johnson, Kaufmann, Kochukhov, Kroll, Kurucz, L. S. Cidale, Lanz, LeBlanc, Leckrone, Leone, Leone, M. L. Arias, Moon, Moujtahid, Mégessier, Mégessier, Napiwotzki, Osmer, Proffitt, Renson, Shore, Sokolov, Sokolov, Stepien, Theodossiou, Vetö, Walborn, Wiegert, Y. Frémat, Zboril, Zboril, Zorec, Zorec   +61 more
core   +10 more sources

Fundamental parameters of B type stars [PDF]

Proceedings of the International Astronomical Union, 2014
AbstractFundamental parameters of 26 well-studied sharp-lined single early B-type stars in OB associations and in the field within a distance of ≤400 pc from the Sun are compared to high-precision data from detached eclipsing binaries (DEBs). Fundamental parameters are derived from accurate and precise atmospheric parameters determined earlier by us ...
María-Fernanda Nieva
semanticscholar   +3 more sources

Fundamental Parameters of CP Stars [PDF]

Highlights of Astronomy, 1998
The quest for accurate fundamental parameters (M, R, Teff log g, v sin i) of CP stars has been a lasting problem ever since the nature and origin of these stars has been discussed. The main reason for the difficulty lies in the anomalous colours of these stars, linked with their abundance anomalies which are responsible for complicated blocking and ...
P. North
openalex   +2 more sources

Fundamental parameters and infrared excesses of Hipparcos stars [PDF]

Royal Astronomical Society. Monthly Notices, 2012
We derive the fundamental parameters (temperature and luminosity) of 107 619 Hipparcos stars and place these stars on a true Hertzsprung-Russell diagram.
A. A. Zijlstra, Aihara, Allard, Beichmann, Bergeat, Bertelli, Boyer, Boyer, Chen, Cho, Dotter, Egan, ESA, Evans, Gezari, Gray, Gray, Groenewegen, Gustafsson, Gustafsson, Höfner, I. McDonald, Ita, Ita, Ita, Kastner, Knapp, Kraemer, Kwan, Kwok, Ladjal, Libert, Luck, Lutz, M. L. Boyer, Marigo, McDonald, McDonald, McDonald, McDonald, McDonald, McDonald, McDonald, Meyer, Miville-Deschênes, Momany, Norris, Oudmaijer, Perryman, Price, Price, Samus, Skrutskie, Sloan, Sloan, Sloan, Sloan, Tatebe, Ueta, Ueta, Valdes, Van Eck, van Leeuwen, Wallace, Wallace, Wareing, Woods, Wright, Wu   +68 more
core   +4 more sources

Fundamental stellar parameters of benchmark stars from CHARA interferometry -- II. Dwarf stars [PDF]

Astronomy & Astrophysics, 2021
Context. Stellar models applied to large stellar surveys of the Milky Way need to be properly tested against a sample of stars with highly reliable fundamental stellar parameters. We have established a programme aiming to deliver such a sample of stars. Aims.
I. Karovicova, T. R. White, Thomas Nordlander, L. Casagrande, Michael Ireland, Daniel Huber   +5 more
openalex   +5 more sources

Accurate fundamental parameters of eclipsing binary stars [PDF]

Proceedings of the International Astronomical Union, 2004
The study of detached eclipsing binaries is one of the most powerful ways to investigate the properties of individual stars and stellar systems. We present preliminary masses, radii and effective temperatures for the eclipsing binary WW Aurigae, which is composed of two metallic-lined A-type stars.
J. Southworth, B. Smalley, P.F.L. Maxted, P.B. Etzel   +3 more
openalex   +4 more sources