Rayner, T. S. M., Griffin, M. J., Schneider, N., Motte, F., Konyves, V., Andre, P., Di Francesco, J., Didelon, P., Pattle, K., Ward-Thompson, D., Anderson, L. D., Benedettini, M., Bernard, J. -P., Bontemps, S., Elia, D., Fuente, A., Hennemann, M., Hill, T., Kirk, J., Marsh, K., Men'shchikov, A., Nguyen Luong, Q., Peretto, N., Pezzuto, S., Rivera-Ingraham, A., Roy, A., Rygl, K., Sanchez-Monge, A., Spinoglio, L., Tige, J., Trevino-Morales, S. P. and White, G. J. (2017). Far-infrared observations of a massive cluster forming in the Monoceros R2 filament hub. Astron. Astrophys., 607. LES ULIS CEDEX A: EDP SCIENCES S A. ISSN 1432-0746

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Abstract

We present far-infrared observations of Monoceros R2 (a giant molecular cloud at approximately 830 pc distance, containing several sites of active star formation), as observed at 70 mu m, 160 mu m, 250 mu m, 350 mu m, and 500 mu m by the Photodetector Array Camera and Spectrometer (PACS) and Spectral and Photometric Imaging Receiver (SPIRE) instruments on the Herschel Space Observatory as part of the Herschel imaging survey of OB young stellar objects (HOBYS) Key programme. The Herschel data are complemented by SCUBA-2 data in the submillimetre range, and WISE and Spitzer data in the mid-infrared. In addition, (CO)-O-18 data from the IRAM 30-m Telescope are presented, and used for kinematic information. Sources were extracted from the maps with getsources, and from the fluxes measured, spectral energy distributions were constructed, allowing measurements of source mass and dust temperature. Of 177 Herschel sources robustly detected in the region (a detection with high signal-to-noise and low axis ratio at multiple wavelengths), including protostars and starless cores, 29 are found in a filamentary hub at the centre of the region (a little over 1% of the observed area). These objects are on average smaller, more massive, and more luminous than those in the surrounding regions (which together suggest that they are at a later stage of evolution), a result that cannot be explained entirely by selection e ff ects. These results suggest a picture in which the hub may have begun star formation at a point significantly earlier than the outer regions, possibly forming as a result of feedback from earlier star formation. Furthermore, the hub may be sustaining its star formation by accreting material from the surrounding filaments.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Rayner, T. S. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Griffin, M. J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schneider, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Motte, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Konyves, V.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Andre, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Di Francesco, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Didelon, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pattle, K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ward-Thompson, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Anderson, L. D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Benedettini, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bernard, J. -P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bontemps, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Elia, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fuente, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hennemann, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hill, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kirk, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Marsh, K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Men'shchikov, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Nguyen Luong, Q.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Peretto, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pezzuto, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rivera-Ingraham, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Roy, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rygl, K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sanchez-Monge, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Spinoglio, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tige, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Trevino-Morales, S. P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
White, G. J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-213844
DOI: 10.1051/0004-6361/201630039
Journal or Publication Title: Astron. Astrophys.
Volume: 607
Date: 2017
Publisher: EDP SCIENCES S A
Place of Publication: LES ULIS CEDEX A
ISSN: 1432-0746
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
GOULD BELT SURVEY; MON R2; STAR-FORMATION; MOLECULAR CLOUD; MAP-MAKING; HERSCHEL; SCUBA-2; CATALOG; PHOTOMETER; OUTFLOWMultiple languages
Astronomy & AstrophysicsMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/21384

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