Herschel-SPIRE spectroscopy of G29.96-0.02: fitting the full SED

J. M. Kirk E. Polehampton L. D. Anderson 1 J. -P. Baluteau 1 Sylvain Bontemps 2, 3, 4, 5 C. Joblin 6 S. C. Jones D. A. Naylor D. Ward-Thompson 7 G. J. White 8 A. Abergel 9 P. Ade P. Andre 10 H. Arab J. -P. Bernard K. Blagrave F. Boulanger 9 M. Cohen M. Compiegne P. Cox E. Dartois 9 G. Davis 11 R. Emery T. Fulton C. Gry 1 E. Habart 9 M. Huang 12 G. Lagache 9 T. Lim 13 S. Madden 14 G. Makiwa P. Martin 15 M. -A. Miville-Deschenes 16 S. Molinari 17 H. Moseley F. Motte 18, 19 K. Okumura D. Pinheiro Gocalvez J. A. Rodon D. Russeil 1 P. Saraceno 17 S. Sidher L. Spencer B. Swinyard A. Zavagno 1, 20
Abstract : We use the SPIRE Fourier-Transform Spectrometer (FTS) on-board the ESA Herschel Space Telescope to analyse the submillimetre spectrum of the Ultra-compact HII region G29.96-0.02. Spectral lines from species including 13CO, CO, [CI], and [NII] are detected. A sparse map of the [NII] emission shows at least one other HII region neighbouring the clump containing the UCHII. The FTS spectra are combined with ISO SWS and LWS spectra and fluxes from the literature to present a detailed spectrum of the source spanning three orders of magnitude in wavelength. The quality of the spectrum longwards of 100 {\mu}m allows us to fit a single temperature greybody with temperature 80.3\pm0.6K and dust emissivity index 1.73\pm0.02, an accuracy rarely obtained with previous instruments. We estimate a mass of 1500 Msol for the clump containing the HII region. The clump's bolometeric luminosity of 4 x 10^6 Lsol is comparable to, or slightly greater than, the known O-star powering the UCHII region.
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Contributeur : Marie-Paule Pomies <>
Soumis le : mardi 5 octobre 2010 - 14:13:32
Dernière modification le : dimanche 27 mai 2018 - 11:40:02

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J. M. Kirk, E. Polehampton, L. D. Anderson, J. -P. Baluteau, Sylvain Bontemps, et al.. Herschel-SPIRE spectroscopy of G29.96-0.02: fitting the full SED. Astronomy and Astrophysics - A&A, EDP Sciences, 2010, 518, pp.L82. 〈10.1051/0004-6361/201014625〉. 〈hal-00523495〉



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