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

Ramírez Alegría, Sebastián; Herrero, Artemio; Marín-Franch, Antonio; Puga, Elena; Najarro, Francisco
Referencia bibliográfica

Société Royale des Sciences de Liège, Bulletin, vol. 80, p. 415-419 (Proceedings of the 39th Liège Astrophysical Colloquium, held in Liège 12-16 July 2010, edited by G. Rauw, M. De Becker, Y. Nazé, J.-M. Vreux, P. Williams)

Advertised on:
1
2011
Número de autores
5
Número de autores del IAC
0
Número de citas
0
Número de citas referidas
0
Descripción
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.