The JCMT Gould Belt Survey : constraints on prestellar core properties in Orion A North

C. J. Salji; J. S. Richer; J. V. Buckle; J. Hatchell; H. Kirk; 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; S. Tisi; S. Walker-Smith; J. Di Franceso; M. R. Hogerheijde; D. Ward-Thompson; 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; D. Robertson; E. Rosolowsky; D. Rumble; S. Sadavoy; H. Thomas; N. Tothill; S. Viti; G. J. White; C. D. Wilson; J. Wouterloot; J. Yates; M. Zhu

doi:10.1093/mnras/stu2297

The JCMT Gould Belt Survey : constraints on prestellar core properties in Orion A North

C. J. Salji, J. S. Richer, J. V. Buckle, J. Hatchell, H. Kirk, 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, S. Tisi, S. Walker-Smith, J. Di FrancesoM. R. Hogerheijde, D. Ward-Thompson, 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, D. Robertson, E. Rosolowsky, D. Rumble, 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 employ SCUBA-2 (Submillimetre Common-User Bolometer Array 2) observations of the Orion A North molecular cloud to derive column density and temperature maps. We apply a novel, Hessian-based structural identification algorithm for detection of prestellar cores to these data, allowing for automated generation of the prestellar mass function. The resulting mass function is observed to peak at 1.39+0.18âˆ’0.19 M, indicating a star-forming efficiency lower limit of âˆ¼14 per cent when compared with the Orion nebula Cluster initial mass function (IMF) peak. Additionally, the prestellar mass function is observed to decay with a high-mass power-law exponent Î±=2.53+0.16âˆ’0.14, indicating approximate functional similarity with the Salpeter IMF (Î± = 2.35). This result, when combined with the results of previous investigations suggests a regional dependence of the star-forming efficiency.

Original language	English
Pages (from-to)	1769-1781
Number of pages	13
Journal	Monthly Notices of the Royal Astronomical Society
Volume	449
Issue number	2
DOIs	https://doi.org/10.1093/mnras/stu2297
Publication status	Published - 2015

Keywords

formation
protostars
stars
submillimeter astronomy

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Salji, C. J., Richer, J. S., Buckle, J. V., Hatchell, J., Kirk, H., 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., Tisi, S., Walker-Smith, S., ... Zhu, M. (2015). The JCMT Gould Belt Survey : constraints on prestellar core properties in Orion A North. Monthly Notices of the Royal Astronomical Society, 449(2), 1769-1781. https://doi.org/10.1093/mnras/stu2297

@article{5f32a2491f654f01943a58a07f38e501,

title = "The JCMT Gould Belt Survey : constraints on prestellar core properties in Orion A North",

abstract = "We employ SCUBA-2 (Submillimetre Common-User Bolometer Array 2) observations of the Orion A North molecular cloud to derive column density and temperature maps. We apply a novel, Hessian-based structural identification algorithm for detection of prestellar cores to these data, allowing for automated generation of the prestellar mass function. The resulting mass function is observed to peak at 1.39+0.18{\^a}ˆ{\textquoteright}0.19 M, indicating a star-forming efficiency lower limit of {\^a}ˆ¼14 per cent when compared with the Orion nebula Cluster initial mass function (IMF) peak. Additionally, the prestellar mass function is observed to decay with a high-mass power-law exponent {\^I}±=2.53+0.16{\^a}ˆ{\textquoteright}0.14, indicating approximate functional similarity with the Salpeter IMF ({\^I}± = 2.35). This result, when combined with the results of previous investigations suggests a regional dependence of the star-forming efficiency.",

keywords = "formation, protostars, stars, submillimeter astronomy",

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

year = "2015",

doi = "10.1093/mnras/stu2297",

language = "English",

volume = "449",

pages = "1769--1781",

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

issn = "0035-8711",

publisher = "Oxford University Press",

number = "2",

}

Salji, CJ, Richer, JS, Buckle, JV, Hatchell, J, Kirk, H, 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, Tisi, S, Walker-Smith, S, Di Franceso, J, Hogerheijde, MR, Ward-Thompson, D, 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, Robertson, D, Rosolowsky, E, Rumble, D, Sadavoy, S, Thomas, H, Tothill, N, Viti, S, White, GJ, Wilson, CD, Wouterloot, J, Yates, J & Zhu, M 2015, 'The JCMT Gould Belt Survey : constraints on prestellar core properties in Orion A North', Monthly Notices of the Royal Astronomical Society, vol. 449, no. 2, pp. 1769-1781. https://doi.org/10.1093/mnras/stu2297

TY - JOUR

T1 - The JCMT Gould Belt Survey : constraints on prestellar core properties in Orion A North

AU - Salji, C. J.

AU - Richer, J. S.

AU - Buckle, J. V.

AU - Hatchell, J.

AU - Kirk, H.

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 - Tisi, S.

AU - Walker-Smith, S.

AU - Di Franceso, J.

AU - Hogerheijde, M. R.

AU - Ward-Thompson, D.

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 - Robertson, D.

AU - Rosolowsky, E.

AU - Rumble, D.

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

Y1 - 2015

N2 - We employ SCUBA-2 (Submillimetre Common-User Bolometer Array 2) observations of the Orion A North molecular cloud to derive column density and temperature maps. We apply a novel, Hessian-based structural identification algorithm for detection of prestellar cores to these data, allowing for automated generation of the prestellar mass function. The resulting mass function is observed to peak at 1.39+0.18âˆ’0.19 M, indicating a star-forming efficiency lower limit of âˆ¼14 per cent when compared with the Orion nebula Cluster initial mass function (IMF) peak. Additionally, the prestellar mass function is observed to decay with a high-mass power-law exponent Î±=2.53+0.16âˆ’0.14, indicating approximate functional similarity with the Salpeter IMF (Î± = 2.35). This result, when combined with the results of previous investigations suggests a regional dependence of the star-forming efficiency.

AB - We employ SCUBA-2 (Submillimetre Common-User Bolometer Array 2) observations of the Orion A North molecular cloud to derive column density and temperature maps. We apply a novel, Hessian-based structural identification algorithm for detection of prestellar cores to these data, allowing for automated generation of the prestellar mass function. The resulting mass function is observed to peak at 1.39+0.18âˆ’0.19 M, indicating a star-forming efficiency lower limit of âˆ¼14 per cent when compared with the Orion nebula Cluster initial mass function (IMF) peak. Additionally, the prestellar mass function is observed to decay with a high-mass power-law exponent Î±=2.53+0.16âˆ’0.14, indicating approximate functional similarity with the Salpeter IMF (Î± = 2.35). This result, when combined with the results of previous investigations suggests a regional dependence of the star-forming efficiency.

KW - formation

KW - protostars

KW - stars

KW - submillimeter astronomy

UR - http://handle.westernsydney.edu.au:8081/1959.7/uws:40348

U2 - 10.1093/mnras/stu2297

DO - 10.1093/mnras/stu2297

M3 - Article

SN - 0035-8711

VL - 449

SP - 1769

EP - 1781

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 2

ER -

The JCMT Gould Belt Survey : constraints on prestellar core properties in Orion A North

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Keywords

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