New Results from the Project MASGOMAS: Near-IR Study of the Stellar Population of Sh2-152

Details New Results from the Project MASGOMAS: Near-IR Study of the Stellar Population of Sh2-152 New Results from the Project MASGOMAS: Near-IR Study of the Stellar Population of Sh2-152

Jan 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011bsrsl..80..415r&link_type=abstract

Société Royale des Sciences de Liège, Bulletin, vol. 80, p. 415-419 (Proceedings of the 39th Liège Astrophysical Colloquium, hel

Astronomy and Astrophysics

Astrophysics

Scientific paper

We present a near-IR and optical spectrophotometric characterization of the stellar population of Sh2-152, as part of our MASGOMAS project. Using new broad band photometry (J, H and K_S) for the cluster and a control field, we have constructed CMD in order to select OB-candidates for H and K spectroscopy. Also, we have obtained the cluster mass function, with the disc population subtracted using the control field mass function. From the 13 spectroscopically observed stars, 6 were classified as B-dwarfs and with individual distance and extinction estimations. With these values we have obtained estimations for the distance (3.01 ± 0.11) kpc, mass (1.86 ± 0.83)\cdot10^3 {M}_&sun; and age <8.1 Myr for Sh2-152. We also present a new optical spectrum for the central ionizing star of Sh2-152, showing some peculiarities associated to this central object and shed some light over the interesting star deeply embedded into the bright K_S nebulosity close to the IRAS source IRAS 22566+5828.

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