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Alik Panja, Soumen Mondal, Somnath Dutta, Santosh Joshi, Sneh Lata, Ramkrishna Das & Siddhartha Biswas

Characterization of pre-main sequence population in H II region Sh2-242

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Mots-clés : étoiles, formation, pré-séquence principale, infrarouge, milieu interstellaire, régions H II

Abstract

We present here preliminary results of the young stellar population associated with an active star-forming region Sh2-242 using multi-wavelength observational data. The cluster radius of the region is estimated as 11 arcmin from the radial density profile, using Wide-field InfraRed Camera deep K-band photometric data. Using a deep infrared photometric survey, we have classified more than 150 young stellar objects, distributed within the cluster region. A total of 36 Hα emission line objects were detected using slitless spectroscopic observations and INT Photometric Hα Survey of the Northern Galactic Plane photometric data. The optical spectroscopic study confirms that the cluster member BD+26 980 is a massive early-type star (B0.5 V). From the spectrophotometric analysis, the distance to the massive star is estimated as 1769 ± 193 pc, confirming earlier estimations.

Keywords : stars, formation, pre-main-sequence, infrared, interstellar medium, H II regions

To cite this article

Alik Panja, Soumen Mondal, Somnath Dutta, Santosh Joshi, Sneh Lata, Ramkrishna Das & Siddhartha Biswas, «Characterization of pre-main sequence population in H II region Sh2-242», Bulletin de la Société Royale des Sciences de Liège [En ligne], Volume 88 - Année 2019, Actes de colloques, 2nd Belgo-Indian Network for Astronomy & Astrophysics (BINA) workshop - October 2018 - Brussels, Belgium, 270 - 274 URL : https://popups.uliege.be/0037-9565/index.php?id=8959.

About: Alik Panja

S. N. Bose National Centre for Basic Sciences, Kolkata 700106, India,  alik.panja@gmail.com

About: Soumen Mondal

S. N. Bose National Centre for Basic Sciences, Kolkata 700106, India

About: Somnath Dutta

S. N. Bose National Centre for Basic Sciences, Kolkata 700106, India

About: Santosh Joshi

Aryabhatta Research Institute of Observational Sciences, Nainital 263002, India

About: Sneh Lata

Aryabhatta Research Institute of Observational Sciences, Nainital 263002, India

About: Ramkrishna Das

S. N. Bose National Centre for Basic Sciences, Kolkata 700106, India

About: Siddhartha Biswas

S. N. Bose National Centre for Basic Sciences, Kolkata 700106, India