EDP Sciences
Free access
Volume 439, Number 2, August IV 2005
Page(s) 595 - 600
Section Interstellar and circumstellar matter
DOI http://dx.doi.org/10.1051/0004-6361:20041615

A&A 439, 595-600 (2005)
DOI: 10.1051/0004-6361:20041615

Millimetric observations of southern H II regions

L. Sabbatini1, F. Cavaliere2, G. Dall'Oglio1, R. D. Davies3, L. Martinis1, A. Miriametro4, R. Paladini5, L. Pizzo1, P. A. Russo1 and L. Valenziano6

1  Dipartimento di Fisica, Università di Roma Tre, via della Vasca Navale 84, 00146 Roma, Italy
    e-mail: sabbatini@fis.uniroma3.it
2  Dipartimento di Fisica, Università di Milano, via Celoria 16, 20133 Milano, Italy
3  University of Manchester, Jodrell Bank Observatory, Macclesfield, Cheshire, UK
4  Dipartimento di Fisica, Università di Roma "La Sapienza", Roma, Italy
5  CESR, 9 Avenue du Colonel Roche, BP 4346, 31028 Toulouse Cedex 4, France
6  CNR, IASF, sezione di Bologna, via P. Gobetti 101, 40129 Bologna, Italy

(Received 8 July 2004 / Accepted 12 April 2005)

We report on millimetric continuum observations of two bright compact $\ion{H}{ii}$ regions, which have been observed for the first time in this frequency range. For the two observed regions ( G291.6-0.5 and G291.3-0.7 ), we derive the flux densities at the two observed wavelengths (1.25 and 2 mm) as well as the spectral index and the temperature of the surrounding dust by fitting a modified blackbody curve to our results combined with IR values obtained from the literature. We also estimate the dust mass and the bolometric luminosity of the two regions.

Key words: $\ion{H}{ii}$ regions -- ISM: individual objects: G291.6-0.5 -- ISM: individual objects: G291.3-0.7 -- submillimeter -- dust, extinction

SIMBAD Objects

© ESO 2005