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Recent advancements in stellar evolution modeling offer unprecedented accuracy in predicting the evolution and deaths of stars. We present new stellar evolutionary models computed with the updated PARSEC V2.0 code for a comprehensive and…

We supplement recent evolutionary computations of canonical stellar models (i.e. with inefficient core overshooting) with Z=0.0002, 0.0004, 0.0006, 0.001, 0.004, 0.008 and suitable assumptions about the original He content. Evolutionary…

天体物理学 · 物理学 2007-05-23 S. Degl'Innocenti , P. Cariulo , P. G. Prada Moroni , M. Marconi

Spectral energy distributions (SEDs) are useful primary and complementary tools in the analysis of observations of young stars. However, the process of collating, inspecting, and flux-converting archival photometry and spectroscopy to build…

太阳与恒星天体物理 · 物理学 2021-04-09 Claire L Davies

We present a database of the latest stellar models of the $Y^2$ (Yonsei-Yale) collaboration. This database contains the stellar evolutionary tracks from the pre-main-sequence birthline to the helium core flash that were used to construct…

天体物理学 · 物理学 2009-11-07 Sukyoung K. Yi , Yong -Cheol Kim , Pierre Demarque

In this paper we present the public release of the Yale Rotating Evolution Code (YREC). YREC is a stellar evolution code that covers brown dwarfs and stars across a wide range of masses, and evolutionary states from the pre-MS through…

We present the General Stellar Parameterizer from Photometry (GSP-Phot), which is part of the astrophysical parameters inference system (Apsis). GSP-Phot is designed to produce a homogeneous catalogue of parameters for hundreds of millions…

Blue horizontal-branch (BHB) stars are ideal tracers for mapping the structure of Galactic stellar halo. Traditionally, BHB sample stars are built from large-scale spectroscopic surveys utilizing their spectral features, however, the…

Gaia Data Release 3 has provided the astronomical community with the largest stellar spectroscopic survey to date ($>$ 220 million sources). The low resolution (R$\sim$50) blue photometer (BP) and red photometer (RP) spectra will allow for…

(Abriged) A new grid of theoretical color indices for the Stromgren uvby photometric system has been derived from MARCS model atmospheres and SSG synthetic spectra for cool dwarf and giant stars. At warmer temperatures this grid has been…

天体物理学 · 物理学 2009-11-10 J. L. Clem , D. A. VandenBerg , F. Grundahl , R. A. Bell

When observing astronomical objects, we must deal with extinction (i.e. the absorption and scattering of the emitted radiation by dust and gas between the source and the observer). Interstellar extinction depends on the location of the…

太阳与恒星天体物理 · 物理学 2024-08-01 E. Paunzen , M. Netopil , M. Prisegen , N. Faltova

It is suggested that the distribution of orbital eccentricities for extrasolar planets is well-described by the Beta distribution. Several properties of the Beta distribution make it a powerful tool for this purpose. For example, the Beta…

地球与行星天体物理 · 物理学 2015-06-16 David M. Kipping

Bayesian parameter estimation of gravitational waves from compact binary coalescence (CBC) typically requires more than millions of evaluations of computationally expensive template waveforms. We propose a technique to reduce the cost of…

广义相对论与量子宇宙学 · 物理学 2021-09-01 Soichiro Morisaki

An unsupervised software ``robot'' that automatically and robustly reduces and analyzes CCD observations of photometric standard stars is described. The robot measures extinction coefficients and other photometric parameters in real time…

天体物理学 · 物理学 2010-02-18 David W. Hogg , Douglas P. Finkbeiner , David J. Schlegel , James E. Gunn

We extend our theoretical computations for low-mass stars to intermediate-mass and massive stars, for which few databases exist in the literature. Evolutionary tracks and isochrones are computed from 2.50 to 20 solar masses for agrid of 37…

太阳与恒星天体物理 · 物理学 2015-05-14 G. Bertelli , E. Nasi , L. Girardi , P. Marigo

In this note, I suggest that the beta-model used to fit the X-ray surface brightness profiles of extended sources, like groups and clusters of galaxies, has to be corrected when the counts are collected in a wide energy band comparable to…

天体物理学 · 物理学 2009-10-31 Stefano Ettori

Spectral analysis is a powerful tool to investigate stellar properties and it has been widely used for decades now. However, the methods considered to perform this kind of analysis are mostly based on iteration among a few diagnostic lines…

天体物理仪器与方法 · 物理学 2015-09-30 J-M. Mugnes , C. Robert

Previous studies have observed significant photometric differences between non-emission B-type and classical Be stars, however the precise mechanism responsible for these differences is unclear. This study combines the Bright Star Catalogue…

太阳与恒星天体物理 · 物理学 2025-04-15 Isaac C. Radley , René D. Oudmaijer , Miguel Vioque , Jonathan M. Dodd

Aims. We search for transiting circumbinary (CB) planets around eclipsing binaries (EBs). Methods. CB-BLS is a recently-introduced algorithm for the detection of transiting CB planets around EBs.We describe progress in search sensitivity,…

地球与行星天体物理 · 物理学 2015-05-13 A. Ofir , H. J. Deeg , C. H. S. Lacy

We analyze extragalactic extinction profiles derived through gamma-ray burst afterglows, using a dust model specifically constructed on the assumption that dust grains are not immutable but respond time-dependently to the local physics.…

星系天体物理 · 物理学 2016-10-04 Alberto Zonca , Cesare Cecchi-Pestellini , Giacomo Mulas , Silvia Casu , Giambattista Aresu

We use the new cosmological recombination code, CosmoRec, for parameter estimation in the context of (future) precise measurements of the CMB temperature and polarization anisotropies. We address the question of how previously neglected…

宇宙学与河外天体物理 · 物理学 2015-05-27 J. R. Shaw , J. Chluba
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