Published July 2017
| Version v1
Journal article
Gaia -ESO Survey: Global properties of clusters Trumpler 14 and 16 in the Carina nebula
Creators
- Damiani, F.
- Klutsch, A.
- Jeffries, R.
- Randich, S.
- Prisinzano, L.
- Maíz Apellániz, J.
- Micela, G.
- Kalari, V.
- Frasca, A.
- Zwitter, T.
- Bonito, R.
- Gilmore, G.
- Flaccomio, E.
- François, P.
- Koposov, S.
- Lanzafame, A.
- Sacco, G.
- Bayo, A.
- Carraro, G.
- Casey, A.
- Alfaro, J.
- Costado, T.
- Donati, P.
- Franciosini, E.
- Hourihane, A.
- Jofre, P.
- Lardo, C.
- Lewis, J.
- Magrini, L.
- Monaco, L.
- Morbidelli, L.
- Worley, C.
- Vink, S.
- Zaggia, S.
Contributors
Others:
- Università degli studi di Torino = University of Turin (UNITO)
- Keele University [Keele]
- INAF - Osservatorio Astronomico di Palermo (OAPa) ; Istituto Nazionale di Astrofisica (INAF)
- INAF - Osservatorio Astrofisico di Catania (OACT) ; Istituto Nazionale di Astrofisica (INAF)
- University of Ljubljana
- Istituto di Astrofisica Spaziale e Fisica cosmica - Palermo (IASF-Pa) ; Istituto Nazionale di Astrofisica (INAF)
- Galaxies, Etoiles, Physique, Instrumentation (GEPI) ; Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris ; Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)
- Focas Research Institute ; Dublin Institute of Technology
- Economía Política y Hacienda Pública, Estadística Económica y Empresarial y Política Económica ; Universidad de Castilla-La Mancha = University of Castilla-La Mancha (UCLM)
- Institut national de recherche et de sécurité (Vandoeuvre lès Nancy) (INRS ( Vandoeuvre lès Nancy))
- Ecole Polytechnique Fédérale de Lausanne (EPFL)
- Istituto Nazionale di Fisica Nucleare, Sezione di Milano (INFN) ; Istituto Nazionale di Fisica Nucleare (INFN)
- Joseph Louis LAGRANGE (LAGRANGE) ; Université Nice Sophia Antipolis (1965 - 2019) (UNS) ; COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur ; COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS)
Description
Aims: We present the first extensive spectroscopic study of the global population in star clusters Trumpler 16, Trumpler 14, and Collinder 232 in the Carina nebula, using data from the Gaia-ESO Survey, down to solar-mass stars.
Methods: In addition to the standard homogeneous survey data reduction, a special processing was applied here because of the bright nebulosity surrounding Carina stars.
Results: We find about 400 good candidate members ranging from OB types down to slightly subsolar masses. About 100 heavily reddened early-type Carina members found here were previously unrecognized or poorly classified, including two candidate O stars and several candidate Herbig Ae/Be stars. Their large brightness makes them useful tracers of the obscured Carina population. The spectroscopically derived temperatures for nearly 300 low-mass members enables the inference of individual extinction values and the study of the relative placement of stars along the line of sight.
Conclusions: We find a complex spatial structure with definite clustering of low-mass members around the most massive stars and spatially variable extinction. By combining the new data with existing X-ray data, we obtain a more complete picture of the three-dimensional spatial structure of the Carina clusters and of their connection to bright and dark nebulosity and UV sources. The identification of tens of background giants also enables us to determine the total optical depth of the Carina nebula along many sightlines. We are also able to put constraints on the star formation history of the region with Trumpler 14 stars found to be systematically younger than stars in other subclusters. We find a large percentage of fast-rotating stars among Carina solar-mass members, which provide new constraints on the rotational evolution of pre-main-sequence stars in this mass range.
Abstract
International audienceAdditional details
Identifiers
- URL
- https://hal.archives-ouvertes.fr/hal-02161307
- URN
- urn:oai:HAL:hal-02161307v1
Origin repository
- Origin repository
- UNICA