The JCMT gould belt survey: evidence for radiative heating in serpens MWC 297 and its influence on local star formation

D. Rumble; J. Hatchell; R.A. Gutermuth; H. Kirk; J. Buckle; S.F. Beaulieu; D.S. Berry; H. Broekhoven-Fiene; M.J. Currie; M. Fich; T. Jenness; D. Johnstone; J.C. Mottram; D. Nutter; K. Pattle; J.E. Pineda; C. Quinn; C. Salji; S. Tisi; S. Walker-Smith; J. Di Francesco; M.R. Hogerheijde; D. Ward-Thompson; L.E. Allen; L.A. Cieza; M.M. Dunham; P.M. Harvey; K.R. Stapelfeldt; P. Bastien; H. Butner; M. Chen; A. Chrysostomou; S. Coude; C.J. Davis; E. Drabek-Maunder; A. Duarte-Cabral; J. Fiege; P. Friberg; R. Friesen; G.A. Fuller; S. Graves; J. Greaves; J. Gregson; W. Holland; G. Joncas; J.M. Kirk; L.B.G. Knee; S. Mairs; K. Marsh; B.C. Matthews; G. Moriarty-Schieven; J. Rawlings; J. Richer; D. Robertson; E. Rosolowsky; S. Sadavoy; H. Thomas; N. Tothill; S. Viti; G.J. White; C.D. Wilson; J. Wouterloot; J. Yates; M. Zhu

doi:10.1093/mnras/stu2695

The JCMT gould belt survey: evidence for radiative heating in serpens MWC 297 and its influence on local star formation

D. Rumble, J. Hatchell, R.A. Gutermuth, H. Kirk, J. Buckle, S.F. Beaulieu, D.S. Berry, H. Broekhoven-Fiene, M.J. Currie, M. Fich, T. Jenness, D. Johnstone, J.C. Mottram, D. Nutter, K. Pattle, J.E. Pineda, C. Quinn, C. Salji, S. Tisi, S. Walker-SmithJ. Di Francesco, M.R. Hogerheijde, D. Ward-Thompson, L.E. Allen, L.A. Cieza, M.M. Dunham, P.M. Harvey, K.R. Stapelfeldt, P. Bastien, H. Butner, M. Chen, A. Chrysostomou, S. Coude, C.J. Davis, E. Drabek-Maunder, A. Duarte-Cabral, J. Fiege, P. Friberg, R. Friesen, G.A. Fuller, S. Graves, J. Greaves, J. Gregson, W. Holland, G. Joncas, J.M. Kirk, L.B.G. Knee, S. Mairs, K. Marsh, B.C. Matthews, G. Moriarty-Schieven, J. Rawlings, J. Richer, D. Robertson, E. Rosolowsky, S. Sadavoy, H. Thomas, N. Tothill, S. Viti, G.J. White, C.D. Wilson, J. Wouterloot, J. Yates, M. Zhu

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Abstract

We present SCUBA-2 450 and 850 μm 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 JCMTbeam for a fixed dust opacity spectral index of β = 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 HII region and polar winds/jets. Contamination accounts for 73 ± 5 per cent and 82 ± 4 per cent of peak flux at 450 μm and 850 μm, respectively. The residual thermal disc of the star is almost undetectable at these wavelengths. Young stellar objects (YSOs) are confirmed where SCUBA-2 850 μm clumps identified by the FELLWALKER algorithm coincide with Spitzer Gould Belt Survey detections. We identify 23 objects and use Tbol to classify nine YSOs with masses 0.09 to 5.1M⊙. 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.

Original language	English
Pages (from-to)	1551-1573
Number of pages	23
Journal	Monthly Notices of the Royal Astronomical Society
Volume	448
Issue number	2
Early online date	14 Feb 2015
DOIs	https://doi.org/10.1093/mnras/stu2695
Publication status	Published - 1 Apr 2015

Keywords

Radiative transfer
Catalogues
Stars: formation
Stars: protostars
HII regions
Submillimetre: general

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Rumble, D., Hatchell, J., Gutermuth, R. A., Kirk, H., Buckle, J., Beaulieu, S. F., Berry, D. S., Broekhoven-Fiene, H., Currie, M. J., Fich, M., Jenness, T., Johnstone, D., Mottram, J. C., Nutter, D., Pattle, K., Pineda, J. E., Quinn, C., Salji, C., Tisi, S., ... 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. https://doi.org/10.1093/mnras/stu2695

@article{6138bc8db34c4bfdbb547d91296b2c1a,

title = "The JCMT gould belt survey: evidence for radiative heating in serpens MWC 297 and its influence on local star formation",

abstract = "We present SCUBA-2 450 and 850 μm 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 JCMTbeam for a fixed dust opacity spectral index of β = 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 HII region and polar winds/jets. Contamination accounts for 73 ± 5 per cent and 82 ± 4 per cent of peak flux at 450 μm and 850 μm, respectively. The residual thermal disc of the star is almost undetectable at these wavelengths. Young stellar objects (YSOs) are confirmed where SCUBA-2 850 μm clumps identified by the FELLWALKER algorithm coincide with Spitzer Gould Belt Survey detections. We identify 23 objects and use Tbol to classify nine YSOs with masses 0.09 to 5.1M⊙. 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.",

keywords = "Radiative transfer, Catalogues, Stars: formation, Stars: protostars, HII regions, Submillimetre: general",

author = "D. Rumble and J. Hatchell and R.A. Gutermuth and H. Kirk and J. Buckle and S.F. Beaulieu and D.S. Berry and H. Broekhoven-Fiene and M.J. Currie and M. Fich and T. Jenness and D. Johnstone and J.C. Mottram and D. Nutter and K. Pattle and J.E. Pineda and C. Quinn and C. Salji and S. Tisi and S. Walker-Smith and \{Di Francesco\}, J. and M.R. Hogerheijde and D. Ward-Thompson and L.E. Allen and L.A. Cieza and M.M. Dunham and P.M. Harvey and K.R. Stapelfeldt and P. Bastien and H. Butner and M. Chen and A. Chrysostomou and S. Coude and C.J. Davis and E. Drabek-Maunder and A. Duarte-Cabral and J. Fiege and P. Friberg and R. Friesen and G.A. Fuller and S. Graves and J. Greaves and J. Gregson and W. Holland and G. Joncas and J.M. Kirk and L.B.G. Knee and S. Mairs and K. Marsh and B.C. Matthews and G. Moriarty-Schieven and J. Rawlings and J. Richer and D. Robertson and E. Rosolowsky and S. Sadavoy and H. Thomas and N. Tothill and S. Viti and G.J. White and C.D. Wilson and J. Wouterloot and J. Yates and M. Zhu",

year = "2015",

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doi = "10.1093/mnras/stu2695",

language = "English",

volume = "448",

pages = "1551--1573",

journal = "Monthly Notices of the Royal Astronomical Society",

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Rumble, D, Hatchell, J, Gutermuth, RA, Kirk, H, Buckle, J, Beaulieu, SF, Berry, DS, Broekhoven-Fiene, H, Currie, MJ, Fich, M, Jenness, T, Johnstone, D, Mottram, JC, Nutter, D, Pattle, K, Pineda, JE, Quinn, C, Salji, C, Tisi, S, Walker-Smith, S, Di Francesco, J, Hogerheijde, MR, Ward-Thompson, D, Allen, LE, Cieza, LA, Dunham, MM, Harvey, PM, Stapelfeldt, KR, Bastien, P, Butner, H, Chen, M, Chrysostomou, A, Coude, S, Davis, CJ, Drabek-Maunder, E, Duarte-Cabral, A, Fiege, J, Friberg, P, Friesen, R, Fuller, GA, Graves, S, Greaves, J, Gregson, J, Holland, W, Joncas, G, Kirk, JM, Knee, LBG, Mairs, S, Marsh, K, Matthews, BC, Moriarty-Schieven, G, Rawlings, J, Richer, J, Robertson, D, Rosolowsky, E, Sadavoy, S, Thomas, H, Tothill, N, Viti, S, White, GJ, Wilson, CD, Wouterloot, J, Yates, 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, vol. 448, no. 2, pp. 1551-1573. https://doi.org/10.1093/mnras/stu2695

TY - JOUR

T1 - The JCMT gould belt survey

T2 - evidence for radiative heating in serpens MWC 297 and its influence on local star formation

AU - Rumble, D.

AU - Hatchell, J.

AU - Gutermuth, R.A.

AU - Kirk, H.

AU - Buckle, J.

AU - Beaulieu, S.F.

AU - Berry, D.S.

AU - Broekhoven-Fiene, H.

AU - Currie, M.J.

AU - Fich, M.

AU - Jenness, T.

AU - Johnstone, D.

AU - Mottram, J.C.

AU - Nutter, D.

AU - Pattle, K.

AU - Pineda, J.E.

AU - Quinn, C.

AU - Salji, C.

AU - Tisi, S.

AU - Walker-Smith, S.

AU - Di Francesco, J.

AU - Hogerheijde, M.R.

AU - Ward-Thompson, D.

AU - Allen, L.E.

AU - Cieza, L.A.

AU - Dunham, M.M.

AU - Harvey, P.M.

AU - Stapelfeldt, K.R.

AU - Bastien, P.

AU - Butner, H.

AU - Chen, M.

AU - Chrysostomou, A.

AU - Coude, S.

AU - Davis, C.J.

AU - Drabek-Maunder, E.

AU - Duarte-Cabral, A.

AU - Fiege, J.

AU - Friberg, P.

AU - Friesen, R.

AU - Fuller, G.A.

AU - Graves, S.

AU - Greaves, J.

AU - Gregson, J.

AU - Holland, W.

AU - Joncas, G.

AU - Kirk, J.M.

AU - Knee, L.B.G.

AU - Mairs, S.

AU - Marsh, K.

AU - Matthews, B.C.

AU - Moriarty-Schieven, G.

AU - Rawlings, J.

AU - Richer, J.

AU - Robertson, D.

AU - Rosolowsky, E.

AU - Sadavoy, S.

AU - Thomas, H.

AU - Tothill, N.

AU - Viti, S.

AU - White, G.J.

AU - Wilson, C.D.

AU - Wouterloot, J.

AU - Yates, J.

AU - Zhu, M.

PY - 2015/4/1

Y1 - 2015/4/1

N2 - We present SCUBA-2 450 and 850 μm 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 JCMTbeam for a fixed dust opacity spectral index of β = 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 HII region and polar winds/jets. Contamination accounts for 73 ± 5 per cent and 82 ± 4 per cent of peak flux at 450 μm and 850 μm, respectively. The residual thermal disc of the star is almost undetectable at these wavelengths. Young stellar objects (YSOs) are confirmed where SCUBA-2 850 μm clumps identified by the FELLWALKER algorithm coincide with Spitzer Gould Belt Survey detections. We identify 23 objects and use Tbol to classify nine YSOs with masses 0.09 to 5.1M⊙. 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.

AB - We present SCUBA-2 450 and 850 μm 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 JCMTbeam for a fixed dust opacity spectral index of β = 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 HII region and polar winds/jets. Contamination accounts for 73 ± 5 per cent and 82 ± 4 per cent of peak flux at 450 μm and 850 μm, respectively. The residual thermal disc of the star is almost undetectable at these wavelengths. Young stellar objects (YSOs) are confirmed where SCUBA-2 850 μm clumps identified by the FELLWALKER algorithm coincide with Spitzer Gould Belt Survey detections. We identify 23 objects and use Tbol to classify nine YSOs with masses 0.09 to 5.1M⊙. 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.

KW - Radiative transfer

KW - Catalogues

KW - Stars: formation

KW - Stars: protostars

KW - HII regions

KW - Submillimetre: general

UR - http://mnras.oxfordjournals.org/content/448/2/1551/suppl/DC1

UR - https://www.scopus.com/pages/publications/84925437087

U2 - 10.1093/mnras/stu2695

DO - 10.1093/mnras/stu2695

M3 - Article

AN - SCOPUS:84925437087

SN - 0035-8711

VL - 448

SP - 1551

EP - 1573

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 2

ER -

The JCMT gould belt survey: evidence for radiative heating in serpens MWC 297 and its influence on local star formation

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Astrophysics at St Andrews:2012 - 2014: Astrophysics at St Andrews: 2012 - 2014

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The JCMT gould belt survey: evidence for radiative heating in serpens MWC 297 and its influence on local star formation

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Astrophysics at St Andrews:2012 - 2014: Astrophysics at St Andrews: 2012 - 2014

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