Results 11 to 20 of about 14,824 (273)

Fundamental stellar parameters of benchmark stars from CHARA interferometry [PDF]

open access: bronzeAstronomy & Astrophysics, 2020
Context. Benchmark stars are crucial as validating standards for current as well as future large stellar surveys of the Milky Way. However, the number of suitable metal-poor benchmark stars is currently limited, owing to the difficulty in determining ...
I. Karovicova   +13 more
openalex   +3 more sources

The life cycles of Be viscous decretion discs: fundamental disc parameters of 54 SMC Be stars [PDF]

open access: bronze, 2018
Be stars are main-sequence massive stars with emission features in their spectrum, which originates in circumstellar gaseous discs. Even though the viscous decretion disc (VDD) model can satisfactorily explain most observations, two important physical ...
L. R. Rímulo   +9 more
openalex   +3 more sources

Precise determination of fundamental parameters of six exoplanet host stars and their planets [PDF]

open access: bronze, 2014
The aim of this paper is to determinate the fundamental parameters of six exoplanet host (EH) stars and their planets. Because techniques for detecting exo-planets yield properties of the planet only as a function of the properties of the host star, we ...
Kang Liu   +5 more
openalex   +3 more sources

Fundamental parameters for 222 B-type stars for the X-shooter Spectral Library

open access: hybridProceedings of the International Astronomical Union, 2022
We use the MIDE3700 code to find effective temperatures (Teff) and surface gravities (log g) via the Barbier Chalonge Divan (BCD) method for 222 B-type stars in the ESO archive in preparation for their inclusion as an extension to the X-shooter Spectral ...
Cormac J. K. Larkin   +3 more
openalex   +2 more sources

Open clusters: III. Fundamental parameters of B stars in NGC 6087, NGC 6250, NGC 6383 and NGC 6530. B type stars with circumstellar envelopes [PDF]

open access: green, 2017
Context. Stellar physical properties of star clusters are poorly known. Aims. Our goals are to perform a spectrophotometric study of the B star population in open clusters to derive accurate stellar parameters, search for the presence of circumstellar ...
Y. Aidelman   +3 more
openalex   +3 more sources

Fundamental parameters of bright Ap stars from wide-range energy distributions and advanced atmospheric models [PDF]

open access: bronze, 2012
Aims. As a well-established procedure for the vast majority of normal main-sequence stars, determination of atmospheric and stellar parameters turns to be a challenging process in case of magnetic chemically peculiar stars.
D. Shulyak, T. Ryabchikova, O. Kochukhov
openalex   +3 more sources

A volume-limited survey of mCP stars within 100 pc – I. Fundamental parameters and chemical abundances [PDF]

open access: greenMonthly notices of the Royal Astronomical Society, 2018
We present the first results of a volume-limited survey of main sequence (MS) magnetic chemically peculiar (mCP) stars. The sample consists of all identified intermediate-mass MS stars (mCP and non-mCP) within a heliocentric distance of $100\,{\rm pc ...
James Sikora   +3 more
openalex   +3 more sources

THE PAN-PACIFIC PLANET SEARCH. V. FUNDAMENTAL PARAMETERS FOR 164 EVOLVED STARS [PDF]

open access: bronze, 2016
We present spectroscopic stellar parameters for the complete target list of 164 evolved stars from the Pan-Pacific Planet Search, a five-year radial velocity campaign using the 3.9 m Anglo-Australian Telescope.
Robert A Wittenmyer   +5 more
openalex   +3 more sources

Fundamental parameters of He-weak and He-strong stars [PDF]

open access: bronze, 2007
Context. He-weak and He-strong stars are chemically peculiar AB objects whose He lines are anomalously weak or strong for their MK spectral type. The determination of fundamental parameters for these stars is often more complex than for normal stars due ...
L. S. Cidale   +5 more
openalex   +3 more sources

The Mass–Temperature Relation for B and Early A Stars Based on International Ultraviolet Explorer Spectra of Detached Eclipsing Binaries

open access: yesThe Astronomical Journal, 2023
Ultraviolet spectra were taken of 25 detached eclipsing binaries (DEBs) with spectral types O, B, and early A with the International Ultraviolet Explorer satellite in the 1150–1900 Å region. The spectra were compared with BOSZ model atmospheres.
Nancy Remage Evans   +6 more
doaj   +1 more source

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