Homogeneous study of Herbig Ae/Be stars from spectral energy distributions and Gaia EDR3
| Autor: | Enrique Solano, I. Mendigutía, P. Marcos-Arenal, J. Guzmán-Díaz, M. Vioque, Carlos Rodrigo, Gwendolyn Meeus, Rene D. Oudmaijer, Benjamin Montesinos |
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| Přispěvatelé: | Comunidad de Madrid, Agencia Estatal de Investigación (AEI), European Research Council (ERC) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Initial mass function
Stellar mass media_common.quotation_subject Astrophysics::High Energy Astrophysical Phenomena FOS: Physical sciences Context (language use) Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics 01 natural sciences fundamental parameters [Stars] Luminosity Photometry (optics) Protoplanetary disk pre-main sequence [Stars] 0103 physical sciences Astrophysics::Solar and Stellar Astrophysics 010303 astronomy & astrophysics Solar and Stellar Astrophysics (astro-ph.SR) Astrophysics::Galaxy Astrophysics media_common Physics Virtual observatory tools 010308 nuclear & particles physics Herbig Ae/Be Astronomy and Astrophysics Accretion (astrophysics) Stars Astrophysics - Solar and Stellar Astrophysics Space and Planetary Science Sky variables: T Tauri [Stars] miscellaneous [Astronomical databases] Astrophysics::Earth and Planetary Astrophysics |
| Zdroj: | DIGITAL.INTA Repositorio Digital del Instituto Nacional de Técnica Aeroespacial instname |
| ISSN: | 0004-6361 |
| Popis: | (Abridged) Herbig Ae/Be stars (HAeBes) have so far been studied based on relatively small samples that are scattered throughout the sky. Their fundamental stellar and circumstellar parameters and statistical properties were derived with heterogeneous approaches before Gaia. Our main goal is to contribute to the study of HAeBes from the largest sample of such sources to date, for which stellar and circumstellar properties have been determined homogeneously from the analysis of the spectral energy distributions (SEDs) and Gaia EDR3 parallaxes and photometry. Multiwavelength photometry was compiled for 209 bona fide HAeBes for which Gaia EDR3 distances were estimated. Using the Virtual Observatory SED Analyser (VOSA), photospheric models were fit to the optical SEDs to derive stellar parameters, and the excesses at infrared (IR) and longer wavelengths were characterized to derive several circumstellar properties. The stellar temperature, luminosity, radius, mass, and age were derived for each star based on optical photometry. In addition, their IR SEDs were classified according to two different schemes, and their mass accretion rates, disk masses, and the sizes of the inner dust holes were also estimated uniformly. The initial mass function fits the stellar mass distribution of the sample within 2 < M_star/M_sun < 12. In this aspect, the sample is therefore representative of the HAeBe regime and can be used for statistical purposes when it is taken into account that the boundaries are not well probed. A statistical analysis was carried out mainly focused on the different circumstellar properties of Herbig Ae (HAe) and Be (HBe) stars. The complete dataset is available online through a Virtual Observatory-compliant archive, representing the most recent reference for statistical studies on the HAeBe regime. 45 pages, 13 figures, 3 tables. Accepted in A&A |
| Databáze: | OpenAIRE |
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