The Dependence of Protostellar Luminosity on Environment in the Cygnus-X Star-Forming Complex

E. Kryukova S. T. Megeath J. L. Hora R. A. Gutermuth S. Bontemps 1 K. Kraemer M. Hennemann 2 N. Schneider 1 Howard A. Smith F. Motte 3
1 FORMATION STELLAIRE 2014
L3AB - Laboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux, OASU - Observatoire aquitain des sciences de l'univers, LAB - Laboratoire d'Astrophysique de Bordeaux [Pessac], Université Sciences et Technologies - Bordeaux 1
Abstract : The Cygnus-X star-forming complex is one of the most active regions of low and high mass star formation within 2 kpc of the Sun. Using mid-infrared photometry from the IRAC and MIPS Spitzer Cygnus-X Legacy Survey, we have identified over 1800 protostar candidates. We compare the protostellar luminosity functions of two regions within Cygnus-X: CygX-South and CygX-North. These two clouds show distinctly different morphologies suggestive of dissimilar star-forming environments. We find the luminosity functions of these two regions are statistically different. Furthermore, we compare the luminosity functions of protostars found in regions of high and low stellar density within Cygnus-X and find that the luminosity function in regions of high stellar density is biased to higher luminosities. In total, these observations provide further evidence that the luminosities of protostars depend on their natal environment. We discuss the implications this dependence has for the star formation process.
Type de document :
Article dans une revue
Astronomical Journal, American Astronomical Society, 2014, 148 (1), pp.id 11. <10.1088/0004-6256/148/1/11>
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https://hal.archives-ouvertes.fr/hal-00987360
Contributeur : Marie-Paule Pomies <>
Soumis le : mardi 6 mai 2014 - 08:16:54
Dernière modification le : jeudi 9 février 2017 - 15:01:26

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E. Kryukova, S. T. Megeath, J. L. Hora, R. A. Gutermuth, S. Bontemps, et al.. The Dependence of Protostellar Luminosity on Environment in the Cygnus-X Star-Forming Complex. Astronomical Journal, American Astronomical Society, 2014, 148 (1), pp.id 11. <10.1088/0004-6256/148/1/11>. <hal-00987360>

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