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We present extensive tables of bolometric corrections and interstellar extinction coefficients for the WFPC2 and ACS (both WFC and HRC) photometric systems. They are derived from synthetic photometry applied to a database of spectral energy…

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…

太阳与恒星天体物理 · 物理学 2020-07-22 Z. Eker , F. Soydugan , S. Bilir , V. Bakis , F. Alicavus , S. Ozer , G. Aslan , M. Alpsoy , Y. Kose

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…

New, high-resolution MARCS synthetic spectra have been calculated for more than a dozen mixtures of the metals allowing, in turn, for variations in C:N:O, [CNO/Fe], and enhanced abundances of C, O, Mg, and Si. Bolometric Corrections (BCs)…

太阳与恒星天体物理 · 物理学 2021-12-15 Don A. VandenBerg , Bengt Edvardsson , Luca Casagrande , Jason W. Ferguson

We provide tables of theoretical isochrones in several photometric systems. To this aim, the following steps are followed: (1) First, we re-write the formalism for converting synthetic stellar spectra into tables of bolometric corrections.…

天体物理学 · 物理学 2009-11-07 L. Girardi , G. Bertelli , A. Bressan , C. Chiosi , M. A. T. Groenewegen , P. Marigo , B. Salasnich , A. Weiss

Astrometric surveys provide the opportunity to measure the absolute magnitudes of large numbers of stars, but only if the individual line-of-sight extinctions are known. Unfortunately, extinction is highly degenerate with stellar effective…

天体物理仪器与方法 · 物理学 2015-05-19 C. A. L. Bailer-Jones

We use MARCS model atmosphere fluxes to compute synthetic colours, bolometric corrections and reddening coefficients for the Hipparcos/Tycho, Pan-STARRS1, SkyMapper and JWST systems. Tables and interpolation subroutines are provided to…

太阳与恒星天体物理 · 物理学 2018-01-31 Luca Casagrande , Don A. VandenBerg

We determine the interstellar extinction in the selected high-latitude areas of the sky based on Gaia EDR3 astrometry and photometry and spectroscopic data from RAVE survey. We approximate the results with the cosecant law in each area thus…

星系天体物理 · 物理学 2021-11-01 Aleksandra Avdeeva , Dana Kovaleva , Oleg Malkov , Alexey Nekrasov

Large spectroscopic surveys have enabled in the recent years the computation of three-dimensional interstellar extinction maps thanks to accurate stellar atmospheric parameters and line-of-sight distances. Such maps are complementary to 3D…

[Abridged] We present a large, new set of stellar evolution models and isochrones for an alpha-enhanced metal distribution typical of Galactic halo and bulge stars; it represents a homogeneous extension of our stellar model library for a…

天体物理学 · 物理学 2011-09-30 A. Pietrinferni , S. Cassisi , M. Salaris , F. Castelli

A detailed map of the distribution of dust at high Galactic latitudes is essential for future cosmic microwave background (CMB) polarization experiments because the dust, while diffuse, remains a significant foreground in these regions. We…

星系天体物理 · 物理学 2024-10-16 Matthew O'Callaghan , Gerry Gilmore , Kaisey S. Mandel

The BaseL Stellar Library (BaSeL) is a library of synthetic spectra which has already been used in various astrophysical applications (stellar clusters studies, characterization and choice of the COROT potential targets, eclipsing…

天体物理学 · 物理学 2009-11-07 E. Lastennet , T. Lejeune , E. Oblak , P. Westera , R. Buser

The ability to make accurate determinations of planetary parameters is inextricably linked to measuring physical parameters of the host star, in particular the stellar radius. In this paper we fit the stellar spectral energy distributions…

地球与行星天体物理 · 物理学 2026-01-07 Sam Morrell , Tim Naylor , John Southworth , David K. Sing

I briefly introduce a database of models that describe the evolution of star clusters in several broad-band photometric systems. Models are based on the latest Padova stellar evolutionary tracks - now including the alpha-enhanced case and…

天体物理学 · 物理学 2007-05-23 Leo Girardi

We introduce the public version of the BAyesian STellar Algorithm (BASTA), an open-source code written in {\tt Python} to determine stellar properties based on a set of astrophysical observables. BASTA has been specifically designed to…

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

This paper provides a detailed comparison of the differences in parameters derived for a star cluster from its color-magnitude diagrams depending on the filters and models used. We examine the consistency and reliability of fitting three…

太阳与恒星天体物理 · 物理学 2015-06-23 Shane Hills , Ted von Hippel , Stephane Courteau , Aaron M. Geller

We present a physically motivated spectral energy distribution (SED) modelling framework for deriving stellar and circumstellar disc parameters from broadband photometry. The model combines a parametrized disc structure, dust opacity, and…

太阳与恒星天体物理 · 物理学 2026-04-06 Volkan Bakış , Ayşe Yadigar Habalı

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

Precise studies on the Galactic bulge, globular cluster, Galactic halo and Galactic thick disk require stellar models with alpha enhancement and various values of helium content. These models are also important for extra-Galactic population…

太阳与恒星天体物理 · 物理学 2018-02-14 Xiaoting Fu , Alessandro Bressan , Paola Marigo , Leo Girardi , Josefina Montalban , Yang Chen , Ambra Nanni
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