The JCMT Gould Belt Survey: evidence for radiative heating in Serpens MWC 297 and its influence on local star formation

被引：26

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
]}

Jenness, T. ^{[7
,9
]}

Johnstone, D. ^{[3
,7
,8
]}

Mottram, J. C. ^{[10
]}

Nutter, D. ^{[11
]}

Pattle, K. ^{[12
]}

Pineda, J. E. ^{[13
,14
]}

Quinn, C. ^{[11
]}

Salji, C. ^{[4
,5
]}

Tisi, S. ^{[6
]}

Walker-Smith, S. ^{[4
,5
]}

Di Francesco, J. ^{[3
,8
]}

Hogerheijde, M. R. ^{[10
]}

Ward-Thompson, D. ^{[12
]}

Allen, L. E. ^{[15
]}

Cieza, L. A. ^{[16
]}

Dunham, M. M. ^{[17
]}

Harvey, P. M. ^{[18
]}

Stapelfeldt, K. R. ^{[19
]}

Bastien, P. ^{[20
,21
]}

Butner, H. ^{[22
]}

Chen, M. ^{[8
]}

Chrysostomou, A. ^{[23
]}

Coude, S. ^{[20
,21
]}

Davis, C. J. ^{[24
]}

Drabek-Maunder, E. ^{[25
]}

Duarte-Cabral, A. ^{[1
]}

Fiege, J. ^{[26
]}

Friberg, P. ^{[7
]}

Friesen, R. ^{[27
]}

Fuller, G. A. ^{[14
]}

Graves, S. ^{[4
,5
]}

Greaves, J. ^{[28
]}

Gregson, J. ^{[29
,30
]}

Holland, W. ^{[31
,32
]}

Joncas, G. ^{[33
,34
]}

Kirk, J. M. ^{[12
]}

Knee, L. B. G. ^{[3
]}

Mairs, S. ^{[8
]}

Marsh, K. ^{[11
]}

Matthews, B. C. ^{[3
,8
]}

机构：

[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

[11] Cardiff Univ, Sch Phys & Astron, Cardiff CF24 3AA, S Glam, Wales

[12] Univ Cent Lancashire, Jeremiah Horrocks Inst, Preston PR1 2HE, Lancs, England

[13] European So Observ, D-85748 Garching, Germany

[14] Univ Manchester, Sch Phys & Astron, Jodrell Bank, Ctr Astrophys, Manchester M13 9PL, Lancs, England

[15] Natl Opt Astron Observ, Tucson, AZ 85719 USA

[16] Univ Diego Portales, Fac Ingn, Santiago, Chile

[17] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA

[18] Univ Texas Austin, Dept Astron, Austin, TX 78712 USA

[19] NASA, Goddard Space Flight Ctr, Exoplanets & Stellar Astrophys Lab, Greenbelt, MD 20771 USA

[20] Univ Montreal, Ctr Rech Astrophys Quebec, Montreal, PQ H3C 3J7, Canada

[21] Univ Montreal, Dept Phys, Montreal, PQ H3C 3J7, Canada

[22] James Madison Univ, Harrisonburg, VA 22807 USA

[23] Univ Hertfordshire, Sch Phys Astron & Math, Hatfield AL10 9AB, Herts, England

[24] Liverpool John Moores Univ, Astrophys Res Inst, Birkenhead CH41 1LD, Merseyside, England

[25] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2BB, England

[26] Univ Manitoba, Dept Phys & Astron, Winnipeg, MB R3T 2N2, Canada

[27] Univ Toronto, Dunlap Inst Astron & Astrophys, Toronto, ON M5S 3H4, Canada

[28] Univ St Andrews, Phys & Astron, St Andrews KY16 9SS, Fife, Scotland

[29] Open Univ, Dept Phys Sci, Milton Keynes MK7 6AA, Bucks, England

[30] Rutherford Appleton Lab, Didcot OX11 0NL, Oxon, England

[31] Royal Observ, UK Astron Technol Ctr, Edinburgh EH9 3HJ, Midlothian, Scotland

[32] Univ Edinburgh, Royal Observ, Inst Astron, Edinburgh EH9 3HJ, Midlothian, Scotland

[33] Univ Laval, Ctr Rech Astrophys Quebec, Quebec City, PQ G1V 0A6, Canada

[34] Univ Laval, Dept Phys Genie Phys & Opt, Quebec City, PQ G1V 0A6, Canada

[35] UCL, Dept Phys & Astron, London WC1E 6BT, England

[36] McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada

[37] Univ Alberta, Dept Phys, Edmonton, AB T6G 2E1, Canada

[38] Max Planck Inst Astron, D-69117 Heidelberg, Germany

[39] Univ Western Sydney, Penrith, NSW 2751, Australia

[40] Natl Astron Observ China, Beijing 100012, Peoples R China

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2015年 / 448卷 / 02期

基金：

加拿大创新基金会;

关键词：

radiative transfer; catalogues; stars: formation; stars: protostars; H II regions; submillimetre: general; PERSEUS MOLECULAR CLOUD; YOUNG STELLAR POPULATION; MAIN-SEQUENCE STAR; SPITZER C2D SURVEY; INTERSTELLAR CLOUDS; CONTINUUM EMISSION; BOLOMETRIC TEMPERATURE; SUBMILLIMETER DUST; MASS-DISTRIBUTION; FORMING REGIONS;

D O I：

10.1093/mnras/stu2695

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

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.

引用

页码：1551 / 1573

页数：23

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