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相关论文: Empirical Bolometric Correction Coefficients for N…

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We provide three statistical model prescriptions for the bolometric corrections appropriate for B-type stars as a function of: 1) T_eff, 2) T_eff, log g, and 3) T_eff, log g, [M/H]. These statistical models have been calculated for 27…

太阳与恒星天体物理 · 物理学 2020-06-10 May G. Pedersen , Ana Escorza , Peter I. Papics , Conny Aerts

We present fits to the broadband photometric spectral energy distributions (SEDs) of 158 eclipsing binaries (EBs) in the Tycho-2 catalog. These EBs were selected because they have highly precise stellar radii, effective temperatures, and in…

太阳与恒星天体物理 · 物理学 2016-12-07 Keivan G. Stassun , Guillermo Torres

Stars with accurate and precise effective temperature (T$_{\rm eff}$) measurements are needed to test stellar atmosphere models and calibrate empirical methods to determine T$_{\rm eff}$. There are few standard stars currently available to…

太阳与恒星天体物理 · 物理学 2020-08-14 N. J. Miller , P. F. L. Maxted , B. Smalley

The second Gaia data release (Gaia-DR2) contains, beyond the astrometry, three-band photometry for 1.38 billion sources. We have used these three broad bands to infer stellar effective temperatures, Teff, for all sources brighter than G=17…

In this study we investigate the calibration of surface brightness--color (SBC) relations based solely on eclipsing binary stars. We selected a sample of 35 detached eclipsing binaries with trigonometric parallaxes from Gaia DR1 or…

We have obtained accurate dust reddening from far-ultraviolet (UV) to the mid-infrared (IR) for up to 5 million stars by the star-pair algorithm based on LAMOST stellar parameters along with GALEX, Pan-STARRS 1, Gaia, SDSS, 2MASS, and WISE…

星系天体物理 · 物理学 2023-01-18 Ruoyi Zhang , Haibo Yuan

We have investigated the relevant trend of the bolometric correction (BC) at the cool-temperature regime of red giant stars and its possible dependence on stellar metallicity. Our analysis relies on a wide sample of optical-infrared…

太阳与恒星天体物理 · 物理学 2015-05-18 A. Buzzoni , L. Patelli , M. Bellazzini , F. Fusi Pecci , E. Oliva

Standard luminosity ($L$) of 406 main-sequence stars with the most accurate astrophysical parameters are predicted from their absolute magnitudes and bolometric corrections at Johnson $B,V$, and Gaia EDR3 $G$, $G_{BP}$, $G_{RP}$ filters.…

太阳与恒星天体物理 · 物理学 2022-12-21 Volkan Bakış , Zeki Eker

The availability of reliable bolometric corrections and reddening estimates, rather than the quality of parallaxes will be one of the main limiting factors in determining the luminosities of a large fraction of Gaia stars. With this goal in…

太阳与恒星天体物理 · 物理学 2018-06-27 Luca Casagrande , Don A. VandenBerg

Gaia Data Release 1 allows to recalibrate standard candles such as the Red Clump stars. To use those, they first need to be accurately characterised. In particular, colours are needed to derive the interstellar extinction. As no filter is…

太阳与恒星天体物理 · 物理学 2018-01-31 L. Ruiz-Dern , C. Babusiaux , F. Arenou , C. Turon , R. Lallement

We present the \texttt{YBC} database of stellar bolometric corrections (BCs), available at \url{http://stev.oapd.inaf.it/YBC}. We homogenize widely-used theoretical stellar spectral libraries and provide BCs for many popular photometric…

A collection of Johnson/Cousins photometry for stars with known [Fe/H] is used to generate color-color relations that include the abundance dependence. Literature temperature and bolometric correction dependences are attached to the color…

天体物理学 · 物理学 2011-01-27 G. Worthey , H. -c. Lee

Combining the precise parallaxes and optical photometry delivered by Gaia's second data release (Gaia DR2) with the photometric catalogues of PanSTARRS-1, 2MASS, and AllWISE, we derive Bayesian stellar parameters, distances, and extinctions…

The surface brightness -- colour relation (SBCR) is a basic tool in establishing precise and accurate distances within the Local Group. Detached eclipsing binary stars with accurately determined radii and trigonometric parallaxes allow for…

Young eclipsing binaries (EBs) are powerful probes of early stellar evolution. Current models are unable to simultaneously reproduce the measured and derived properties that are accessible for EB systems (e.g., mass, radius, temperature,…

Double-lined spectroscopic binaries which are also eclipsing provide the most accurate stellar data, and are consequently of first importance to improve stellar evolution modelling. While the mass and radius of each component of detached…

天体物理学 · 物理学 2007-05-23 E. Lastennet , F. Cuisinier , T. Lejeune

We present new determinations of bolometric corrections and effective temperature scales as a function of infrared and optical colors, using a large database of photometric observations of about 6500 Population II giants in Galactic…

天体物理学 · 物理学 2010-02-18 P. Montegriffo , F. R. Ferraro , L. Origlia , F. Fusi Pecci

In this study, photometric metallicity and absolute magnitude calibrations were derived using F-G spectral type main-sequence stars in the Solar neighbourhood with precise spectroscopic, photometric and Gaia astrometric data for UBV…

星系天体物理 · 物理学 2019-10-23 M. Celebi , S. Bilir , S. Ak , T. Ak , Z. F. Bostanci , T. Yontan

Gaia will obtain astrometry and spectrophotometry for essentially all sources in the sky down to a broad band magnitude limit of G=20, an expected yield of 10^9 stars. Its main scientific objective is to reveal the formation and evolution…

天体物理仪器与方法 · 物理学 2015-06-05 C. Liu , C. A. L. Bailer-Jones , R. Sordo , A. Vallenari , R. Borrachero , X. Luri , P. Sartoretti

Using a sample of 81 galactic, detached eclipsing binary stars we investigated the global zero-point shift of their parallaxes with the Gaia Data Release 2 (DR2) parallaxes. The stars in the sample lay in a distance range of 0.04-2 kpc from…

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