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VizieR Online Data Catalog: JHK photometry around RAFGL 7009S (Zavagno+, 2002)

Abstract : RAFGL7009S is a deeply embedded massive young stellar objet (YSO) showing strong ice and saturated silicate absorption features in the mid infrared. It is associated with the ultracompact H II region G25.65+1.05, which may be excited by a B1V star. We have obtained JHK images of a 1' field centred on this YSO. In K we detect a non-resolved object coinciding with the radio continuum emission peak. Considering the high extinction towards this source (A_V>=100mag), the observed K emission is more than 7\raisebox-0.5ex~mag in excess of that expected for a B1V star. We suggest that this emission is mainly due to scattering of the central zone emission, as recently found for a sample of embedded massive YSOs associated with 3.1\ensuremathμm H_2O ice absorption (Ishii et al., 2002AJ....124..430I). We estimate the YSO's age to be 2x10^4 years. The outflow, the methanol maser emission and the strong ice absorption features suggest the presence of a dense medium very close to the star, possibly a disk. \\\\The observations were obtained with the Montreal Near-IR Camera (MONICA, Nadeau et al., 1994PASP..106..909N) mounted at the F/8 Cassegrain focus of the 3.6-m Canada-France-Hawaii Telescope on 1996 July 1 UT. Frames were obtained through the J, H and K broad-band filters with total integration times of 840s, 160s and 100s Details about the instrumentation, the calibration and the data analysis can be found in Deharveng et al. (1999, Cat. ). \\\\(1 data file).
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https://hal-amu.archives-ouvertes.fr/hal-03562780
Contributor : Catherine Beaussier Connect in order to contact the contributor
Submitted on : Wednesday, February 9, 2022 - 11:35:09 AM
Last modification on : Thursday, February 10, 2022 - 3:34:51 AM

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  • HAL Id : hal-03562780, version 1

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A. Zavagno, L. Deharveng, D. Nadeau, J. Caplan. VizieR Online Data Catalog: JHK photometry around RAFGL 7009S (Zavagno+, 2002). VizieR Online Data Catalog, 2002, pp.J/A+A/394/225. ⟨hal-03562780⟩

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