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The Red MSX Source survey: The bolometric fluxes and luminosity distributions of young massive stars

Mottram, Joseph C., Hoare, Melvin G., Urquhart, J.S., Lumsden, Stuart L., Oudmaijer, Rene D., Robitaille, T.P., Moore, Toby J.T., Davies, Ben, Stead, Joseph J. (2011) The Red MSX Source survey: The bolometric fluxes and luminosity distributions of young massive stars. Astronomy and Astrophysics, 525 (9). p. 14479. ISSN 0004-6361. (doi:10.1051/0004-6361/201014479) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Official URL
http://www.dx.doi.org/10.1051/0004-6361/201014479

Abstract

Context. The Red MSX Source (RMS) survey is returning a large sample of massive young stellar objects (MYSOs) and ultra-compact (UC) H?ii regions using follow-up observations of colour-selected candidates from the MSX point source catalogue. Aims. We obtain the bolometric fluxes and, using kinematic distance information, the luminosities for young RMS sources with far-infrared fluxes. Methods. We use a model spectral energy distribution (SED) fitter to obtain the bolometric flux for our sources, given flux data from our work and the literature. The inputs to the model fitter were optimised by a series of investigations designed to reveal the effect varying these inputs had on the resulting bolometric flux. Kinematic distances derived from molecular line observations were then used to calculate the luminosity of each source. Results. Bolometric fluxes are obtained for 1173 young RMS sources, of which 1069 have uniquely constrained kinematic distances and good SED fits. A comparison of the bolometric fluxes obtained using SED fitting with trapezium rule integration and two component greybody fits was also undertaken, and showed that both produce considerable scatter compared to the method used here. Conclusions. The bolometric flux results allowed us to obtain the luminosity distributions of YSOs and UCH?ii regions in the RMS sample, which we find to be different. We also find that there are few MYSOs with L ? 105 L?, despite finding many MYSOs with 104 L? ? L ? 105 L?.

Item Type: Article
DOI/Identification number: 10.1051/0004-6361/201014479
Uncontrolled keywords: stars: formation / stars: massive / stars: pre-main sequence / Hii regions / surveys
Subjects: Q Science > QB Astronomy > QB460 Astrophysics
Divisions: Faculties > Sciences > School of Physical Sciences > Centre for Astrophysics and Planetary Sciences
Depositing User: James Urquhart
Date Deposited: 30 Nov 2015 16:06 UTC
Last Modified: 29 May 2019 16:28 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/52227 (The current URI for this page, for reference purposes)
Urquhart, J.S.: https://orcid.org/0000-0002-1605-8050
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