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A deep dive into NGC 604 with Gemini/NIRI imaging

Published online by Cambridge University Press:  18 January 2010

Cecilia Fariña ,
Guillermo L. Bosch  and
Rodolfo R. Barbá
Cecilia Fariña
Affiliation:
Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata, Paseo de Bosque s/n, 1900 La Plata, Argentina email: [email protected] IALP, CONICET, Argentina
Guillermo L. Bosch
Affiliation:
Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata, Paseo de Bosque s/n, 1900 La Plata, Argentina email: [email protected] IALP, CONICET, Argentina
Rodolfo R. Barbá
Affiliation:
ICATE, CONICET, Argentina Departamento de Física, Universidad de La Serena, Benavente 980, La Serena, Chile
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Abstract

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The giant Hii region NGC 604 constitutes a complex and rich population to study in detail many aspects of massive star formation, such as their environments and physical conditions, the evolutionary processes involved, the initial mass function for massive stars and star-formation rates, among many others. Here, we present our first results of a near-infrared study of NGC 604 performed with NIRI images obtained with Gemini North. Based on deep JHK photometry, 164 sources showing infrared excess were detected, pointing to the places where we should look for star-formation processes currently taking place. In addition, the color–color diagram reveals a great number of objects that could be giant/supergiant stars or unresolved, small, tight clusters. An extinction map obtained based on narrow-band images is also shown.

Keywords

ISM: individual (NGC 604)Hii regionsgalaxies: individual (M 33)techniques: photometricstars: formationstars: early-typeinfrared: stars
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Symposium S266: Star clusters: basic galactic building blocks throughout time and space , August 2009 , pp. 391 - 394
Copyright
Copyright © International Astronomical Union 2010

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