VVV study of the young Milky Way star clusters: Mercer 35, 69 and 70

Radostin Kurtev, Jura Borissova, Charles Bonatto, Francisco Peñaloza, Valentin Ivanov, Étienne Artigau, Stuart Folkes, Douglas Geisler, Dante Minniti, Philip Lucas, Stuart Sale

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Young massive clusters are usually deeply embedded in dust and gas. They represent excellent astrophysical laboratories for revealing the enigma of star formation processes and the early stages of stellar evolution. Wide-field infrared surveys are a modern tool for studying hidden clusters. "Vista variables in Vía Láctea - VVV" (Minniti et al. New Astron. 15:433, 2010) is an ESO/Chile/VISTA public deep near-IR survey, covering the Galactic Bulge and Southern Galactic disk. This is the next step of our systematic study of the cluster content of the inner Milky Way. Here we present our first analysis of the young hidden clusters Mercer 35, 69 and 70. It is based on VVV and SOFI/NTT JHKS photometry and follow-up NIR spectroscopy. All of the investigated clusters are young (t≤10 Myr). The basic cluster parameters are obtained from photometry. The follow-up spectroscopy of probable cluster members shows that the brightest star in Mercer 35 presents characteristics of a red supergiant!

Original languageEnglish
Title of host publicationStar Clusters in the Era of Large Surveys - Proceedings of Symposium 5 of JENAM 2010
PublisherKluwer Academic Publishers
Pages109-111
Number of pages3
ISBN (Print)9783642221125
DOIs
Publication statusPublished - 2012
Event5th JENAM Symposium: Star Clusters in the Era of Large Surveys, JENAM 2010 - Lisbon, Portugal
Duration: 9 Sep 201010 Sep 2010

Other

Other5th JENAM Symposium: Star Clusters in the Era of Large Surveys, JENAM 2010
CountryPortugal
CityLisbon
Period9/09/1010/09/10

ASJC Scopus subject areas

  • Astronomy and Astrophysics

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    Kurtev, R., Borissova, J., Bonatto, C., Peñaloza, F., Ivanov, V., Artigau, É., Folkes, S., Geisler, D., Minniti, D., Lucas, P., & Sale, S. (2012). VVV study of the young Milky Way star clusters: Mercer 35, 69 and 70. In Star Clusters in the Era of Large Surveys - Proceedings of Symposium 5 of JENAM 2010 (pp. 109-111). Kluwer Academic Publishers. https://doi.org/10.1007/978-3-642-22113-2-16