Sign on

SAO/NASA ADS Astronomy Abstract Service

· Find Similar Abstracts (with default settings below)
· Electronic Refereed Journal Article (HTML)
· Full Refereed Journal Article (PDF/Postscript)
· arXiv e-print (arXiv:0806.4584)
· On-line Data
· References in the article
· Citations to the Article (5) (Citation History)
· Refereed Citations to the Article
· SIMBAD Objects (44)
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
The young Galactic star cluster [DBS2003] 179
Authors:
Borissova, J.; Ivanov, V. D.; Hanson, M. M.; Georgiev, L.; Minniti, D.; Kurtev, R.; Geisler, D.
Affiliation:
AA(Departamento de Física y Astronomía, Facultad de Ciencias, Universidad de Valparaíso, Ave. Gran Bretaña 1111, Playa Ancha, Casilla 5030, Valparaíso, Chile ), AB(European Southern Observatory, Av. Alonso de Córdoba 3107, Casilla 19, Santiago 19001, Chile ), AC(University of Cincinnati, Cincinnati, Ohio 45221-0011, USA ), AD(Instituto de Astronomía, Universidad Nacional Autónoma de México, Apartado Postal 70-254, CD Universitaria, CP 04510 Mexico DF, Mexico ), AE(Departmento de Astronomía y Astrofísica, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, 782-0436 Macul, Santiago, Chile and Vatican Observatory, Specola Vaticana, V00120 Vatican City State, Italy ), AF(Departamento de Física y Astronomía, Facultad de Ciencias, Universidad de Valparaíso, Ave. Gran Bretaña 1111, Playa Ancha, Casilla 5030, Valparaíso, Chile), AG(Departmento de Astronomía, Universidad de Concepcion, Casilla 160-C, Concepcion, Chile )
Publication:
Astronomy and Astrophysics, Volume 488, Issue 1, 2008, pp.151-159 (A&A Homepage)
Publication Date:
09/2008
Origin:
EDP Sciences
Keywords:
Galaxy: open clusters and associations: general, Galaxy: open clusters and associations: individual [DBS2003] 179, stars: early-type, stars: emission-line, Be
DOI:
10.1051/0004-6361:20079255
Bibliographic Code:
2008A&A...488..151B

Abstract

Context: Recent near- and mid-infrared surveys have brought evidence that the Milky Way continues to form massive clusters.
Aims: We carry out a program to determine the basic physical properties of the new massive cluster candidate [DBS2003] 179.
Methods: Medium-resolution K-band spectra and deep near-infrared images of [DBS2003] 179 were used to derive the spectral types of eight member stars, and to estimate the distance and reddening to the cluster.
Results: Seven of ten stars with spectra show emission lines. Comparison with template spectra indicated that they are early O-type stars. The mean radial velocity of the cluster is V_rad=-77 ± 6 km s-1. Knowing the spectral types of the members and the color excesses, we determined extinction AV ˜ 16.6 and distance modulus (m-M)0 ˜ 14.5 mag (D˜7.9 Kpc). The presence of early O-stars and a lack of red supergiants suggests a cluster age of 2-5 Myr. The total cluster mass is approximated to 0.7 × 10 ^4~Mȯ and it is not yet dynamically relaxed.
Conclusions: The candidate [DBS2003] 179 further increases the family of the massive young clusters in the Galaxy, although it appears less massive than the prototypical starburst clusters.

Based on observations collected with the Very Large Telescope of the European Southern Observatory within the Observing Program 79.D-0149(A).This paper includes data gathered with the 6.5 m Magellan Telescopes located at Las Campanas Observatory, Chile.

Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)
   

Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints