The JCMT Gould Belt Survey: evidence for radiative heating in Serpens MWC 297 and its influence on local star formation
文献类型：期刊论文
| 作者 | Rumble, D.1; Hatchell, J.1; Gutermuth, R. A.2; Kirk, H.3; Buckle, J.4,5; Beaulieu, S. F.6; Berry, D. S.7; Broekhoven-Fiene, H.8; Currie, M. J.7; Fich, M.6 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 出版日期 | 2015-04-01 |
| 卷号 | 448期号:2页码:1551-1573 |
| 关键词 | radiative transfer catalogues stars: formation stars: protostars H II regions submillimetre: general |
| 英文摘要 | We present SCUBA-2 450 and 850 mu m observations of the Serpens MWC 297 region, part of the James Clerk Maxwell Telescope (JCMT) Gould Belt Survey of nearby star-forming regions. Simulations suggest that radiative feedback influences the star formation process and we investigate observational evidence for this by constructing temperature maps. Maps are derived from the ratio of SCUBA-2 fluxes and a two-component model of the JCMT beam for a fixed dust opacity spectral index of beta = 1.8. Within 40 arcsec of the B1.5Ve Herbig star MWC 297, the submillimetre fluxes are contaminated by free-free emission with a spectral index of 1.03 +/- 0.02, consistent with an ultracompact H II region and polar winds/jets. Contamination accounts for 73 +/- 5 per cent and 82 +/- 4 per cent of peak flux at 450 mu m and 850 mu m, respectively. The residual thermal disc of the star is almost undetectable at these wavelengths. Young stellar objects (YSOs) are confirmed where SCUBA-2 850 mu m clumps identified by the FELLWALKER algorithm coincide with Spitzer Gould Belt Survey detections. We identify 23 objects and use T-bol to classify nine YSOs with masses 0.09 to 5.1 M-circle dot. We find two Class 0, one Class 0/I, three Class I and three Class II sources. The mean temperature is 15 +/- 2 K for the nine YSOs and 32 +/- 4 K for the 14 starless clumps. We observe a starless clump with an abnormally high mean temperature of 46 +/- 2 K and conclude that it is radiatively heated by the star MWC 297. Jeans stability provides evidence that radiative heating by the star MWC 297 may be suppressing clump collapse. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000350274500039 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/5724]  |
| 专题 | 国家天文台_射电天文研究部 |
| 作者单位 | 1.Univ Exeter, Phys & Astron, Exeter EX4 4QL, Devon, England 2.Univ Massachusetts, Dept Astron, Amherst, MA 01002 USA 3.Natl Res Council Canada, Victoria, BC V9E 2E7, Canada 4.Univ Cambridge, Cavendish Lab, Astrophys Grp, Cambridge CB3 0HE, England 5.Univ Cambridge, Inst Astron, Kavli Inst Cosmol, Cambridge CB3 0HA, England 6.Univ Waterloo, Dept Phys & Astron, Waterloo, ON N2L 3G1, Canada 7.Joint Astron Ctr, Hilo, HI 96720 USA 8.Univ Victoria, Dept Phys & Astron, Victoria, BC V8P 1A1, Canada 9.Cornell Univ, Dept Astron, Ithaca, NY 14853 USA 10.Leiden Univ, Leiden Observ, NL-2300 RA Leiden, Netherlands |
| 推荐引用方式 GB/T 7714 | Rumble, D.,Hatchell, J.,Gutermuth, R. A.,et al. The JCMT Gould Belt Survey: evidence for radiative heating in Serpens MWC 297 and its influence on local star formation[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2015,448(2):1551-1573. |
| APA | Rumble, D..,Hatchell, J..,Gutermuth, R. A..,Kirk, H..,Buckle, J..,...&Zhu, M..(2015).The JCMT Gould Belt Survey: evidence for radiative heating in Serpens MWC 297 and its influence on local star formation.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,448(2),1551-1573. |
| MLA | Rumble, D.,et al."The JCMT Gould Belt Survey: evidence for radiative heating in Serpens MWC 297 and its influence on local star formation".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 448.2(2015):1551-1573. |
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