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Related papers: A Method of Improving Standard Stellar Luminositie…

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Methods of obtaining stellar luminosities (L) have been revised and a new concept, standard stellar luminosity, has been defined. Among the three methods (direct method from radii and effective temperatures, method using a mass-luminosity…

Solar and Stellar Astrophysics · Physics 2021-09-15 Z. Eker , F. Soydugan , S. Bilir , V. Bakis

Main-sequence bolometric corrections (BC) and a standard BC-Teff relation are produced for TESS wavelengths using published physical parameters and light ratios from SED models of 209 detached double-lined eclipsing binaries. This and…

Solar and Stellar Astrophysics · Physics 2023-05-31 Zeki Eker , Volkan Bakis

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…

Solar and Stellar Astrophysics · Physics 2020-06-10 May G. Pedersen , Ana Escorza , Peter I. Papics , Conny Aerts

The fundamental parameters of a low-mass star can potentially be determined from its photometry and astrometry. This is complicated by the fact that 10-20 percent of low-mass stars are predicted to be equal-mass binaries. These unresolved…

Solar and Stellar Astrophysics · Physics 2026-02-24 Zachary Way , Sébastien Lépine , Jonathan Gagné , Ilija Medan

Nearby detached double-lined eclipsing binaries with most accurate data were studied and 290 systems were found with at least one main-sequence component having a metallicity $0.008\leq Z\leq 0.040$. Stellar parameters, light ratios, Gaia…

Solar and Stellar Astrophysics · Physics 2020-07-22 Z. Eker , F. Soydugan , S. Bilir , V. Bakis , F. Alicavus , S. Ozer , G. Aslan , M. Alpsoy , Y. Kose

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…

Solar and Stellar Astrophysics · Physics 2016-12-07 Keivan G. Stassun , Guillermo Torres

We estimate the stellar mass for a sample of low surface brightness galaxies (LSBGs) by fitting their multiband spectral energy distributions (SEDs) to the stellar population synthesis (SPS) model. The derived stellar masses (log M*/Msun)…

Astrophysics of Galaxies · Physics 2020-03-05 Du Wei , Cheng Cheng , Zheng Zheng , Wu Hong

After a pedagogical introduction to the main concepts of synthetic photometry, colours and bolometric corrections in the Johnson-Cousins, 2MASS, and HST-ACS/WFC3 photometric systems are generated from MARCS synthetic fluxes for various…

Solar and Stellar Astrophysics · Physics 2014-09-15 Luca Casagrande , Don A. VandenBerg

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…

Astrophysics · Physics 2011-01-27 G. Worthey , H. -c. Lee

Stars appearing in CCD images obtained over 224 nights during the course of 69 observing runs have been calibrated to the Johnson/Kron-Cousins BVRI photometric system defined by the equatorial standards of Landolt (1992, AJ, 104, 340). More…

Astrophysics · Physics 2009-10-31 Peter B. Stetson

The color - stellar mass-to-light ratio relation (CMLR) is a widely accepted tool to estimate the stellar mass (M*) of a galaxy. However, an individual CMLR tends to give distinct M* for a same galaxy when it is applied in different bands.…

Astrophysics of Galaxies · Physics 2020-07-22 Wei Du , Stacy S. McGaugh

We present CCD observations of 102 Landolt standard stars obtained with the R-C spectrograph on the CTIO 1.5 m telescope. Using stellar atmosphere models we have extended the flux points to our six spectrophotometric secondary standards, in…

Understanding how active galactic nuclei (AGN) affect their host galaxies requires determining their total radiative power across all wavelengths (i.e., bolometric luminosities). We show how AGN accretion disk spectral energy distribution…

Astrophysics of Galaxies · Physics 2025-09-25 Mojegan Azadi , Belinda Wilkes , Joanna Kuraszkiewicz , Steven. P. Willner , Matthew L. N. Ashby

Accurate determinations of stellar parameters and distances for large complete samples of stars are keys for conducting detailed studies of the formation and evolution of our Galaxy. Here we present stellar atmospheric parameters ($T_{\rm…

Despite the advances provided by large-scale photometric surveys, stellar features - such as metallicity - generally remain limited to spectroscopic observations often of bright, nearby low-extinction stars. To rectify this, we present a…

Astrophysics of Galaxies · Physics 2022-10-19 Connor P. Fallows , Jason L. Sanders

Large-scale surveys will provide spectroscopy for $\sim$50 million resolved stars in the Milky Way and Local Group. However, these data will have a high degree of heterogeneity and most will be low-resolution ($R<10000$), posing challenges…

Solar and Stellar Astrophysics · Physics 2023-07-19 Nathan R. Sandford , Daniel R. Weisz , Yuan-Sen Ting

The discrepancies between theoretical and observed spectra, and the systematic differences between various spectroscopic parameter estimates, complicate the determination of atmospheric parameters of M-type stars. In this work, we present…

Solar and Stellar Astrophysics · Physics 2024-10-23 Bing Du , A-Li Luo , Song Wang , Yinbi Li , Cai-Xia Qu , Xiao Kong , Yan-xin Guo , Yi-han Song , Fang Zuo

We calibrate spectrophotometric optical spectra of 32 stars commonly used as standard stars, referenced to 14 stars already on the HST-based CALSPEC flux system. Observations of CALSPEC and non-CALSPEC stars were obtained with the SuperNova…

Context. In order to determine stellar luminosities and radii, it is necessary to know the total bolometric fluxes emitted by the stars, or equivalently the bolometric corrections (BCs) as accurately as possible. Aims. The aim of this paper…

We apply the stellar locus method to synthetic $(BP-RP)_{XPSP}$ and $(BP-G)_{XPSP}$ colors derived from corrected Gaia BP/RP (XP) spectra to obtain precise estimates of metallicity for about 100 million stars in the Milky Way (34 million…

Solar and Stellar Astrophysics · Physics 2025-02-04 Bowen Huang , Haibo Yuan , Shuai Xu , Kai Xiao , Maosheng Xiang , Yang Huang , Timothy C. Beers
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