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

Salji, C.; Richer, J. S.; Buckle, Jane; Hatchell, Jennifer; Kirk, Helen; Beaulieu, S. F.; Berry, D. S.; Broekhoven-Fiene, H.; Currie, Malcolm J.; Fich, M.; Jenness, Tim; Johnstone, Doug; Mottram, J. C.; Nutter, David; Pattle, Kate; Pineda, Jaime E.; Quinn, C.; Tisi, S.; Walker-Smith, S.; Francesco, James Di; Hogerheijde, M. R.; Ward-Thompson, Derek; Bastien, Pierre; Butner, H. M.; Chen, M.; Chrysostomou, A.; Coudé, Simon; Davis, C. J.; Drabek-Maunder, E.; Duarte-Cabral, A.; Fiege, Jason D.; Friberg, Per; Friesen, Rachel; Fuller, G. A.; Graves, Sarah; Greaves, J. S.; Gregson, J.; Holland, W. S.; Joncas, G.; Kirk, J. M.; Knee, L. B. G.; Mairs, Steve; Matthews, Brenda C.; Moriarty‐Schieven, G. H.; Rawlings, J. M. C.; Robertson, D.; Rosolowsky, Erik; Rumble, D.; Sadavoy, Sarah; Thomas, H. S.; Tothill, N.; Viti, S.; White, G. J.; Wilson, C. D.; Wouterloot, J. G. A.; Yates, J.; Zhu, Meiping

doi:10.1093/mnras/stu2297

Cited by 28 publications

(49 citation statements)

References 35 publications

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“…Compared to other regions observed with SCUBA-2, e.g. Ophiuchus (Pattle et al 2015), Orion A (Salji et al 2015;Mairs et al 2016), Orion B (Kirk et al 2016) and Perseus (Chen et al 2016), the maps show much less evidence of bright, compact objects and clustered structures. Its appearance is more in line with the relatively quiescent Auriga-California Nebula (BroekhovenFiene et al, in preparation), although even Auriga-California contains more structure than Lupus I.…”

Section: S C U Ba -2 M a P Scontrasting

confidence: 71%

The JCMT Gould Belt Survey: A First Look at SCUBA-2 Observations of the Lupus I Molecular Cloud

Mowat

Hatchell

Rumble

et al. 2017

Mon. Not. R. Astron. Soc.

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Section: S C U Ba -2 M a P Scontrasting

confidence: 71%

The JCMT Gould Belt Survey: A First Look at SCUBA-2 Observations of the Lupus I Molecular Cloud

Mowat

Hatchell

Rumble

et al. 2017

Mon. Not. R. Astron. Soc.

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“…The opacity of the dust is quite uncertain and a source of significant on-going research. Following the GBS standard (Pattle et al 2015;Rumble et al 2015Rumble et al , 2016Salji et al 2015aSalji et al , 2015bKirk et al 2016aKirk et al , 2016bLane et al 2016;Mairs et al 2016), we adopt k = 0.0125 850 cm 2 g −1 . Taking a fiducial value for the temperature from Appendix A,…”

Section: Large-scale Structurementioning

confidence: 99%

“…This imaging covered 50 square degrees of nearby clouds within the Gould Belt, including well-known regions such as Auriga (Broekhoven-Fiene et al 2016), Ophiuchus (Pattle et al 2015), Orion (Salji et al 2015a(Salji et al , 2015bKirk et al 2016aKirk et al , 2016bLane et al 2016;Mairs et al 2016), Perseus (Hatchell et al 2013;Sadavoy et al 2013;Chen et al 2016), SerpensMWC297 (Rumble et al 2015), Taurus (Buckle et al 2015;Ward-Thompson et al 2016), and W40 (Rumble et al 2016). Among these targets, the GBS survey covered approximately 2.5 square degrees of the IC 5146 starforming region.…”

Section: Introductionmentioning

confidence: 99%

“…The 12 CO = -J 3 2 ( ) emission line lies within the SCUBA-2 850 μm bandpass, and can therefore "contaminate" the thermal dust emission measured (Johnstone et al 2003;Drabek et al 2012). Previous observations suggest that the amount of CO contamination is generally small, typically less than 20% (Johnstone et al 2003;Drabek et al 2012;Hatchell et al 2013;Sadavoy et al 2013;Buckle et al 2015;Pattle et al 2015;Salji et al 2015a;Coudé et al 2016;Kirk et al 2016a), though in zones with weak 850 μm emission and a strong CO outflow, CO has been observed to contribute up to 90% of the flux.…”

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confidence: 98%

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Alma Resolves the Torus of NGC 1068: Continuum and Molecular Line Emission

García‐Burillo

Combes

Almeida

et al. 2016

ApJL

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We present 450 and 850 μm submillimeter continuum observations of the IC 5146 star-forming region taken as part of the James Clerk Maxwell Telescope Gould Belt Survey. We investigate the location of bright submillimeter (clumped) emission with the larger-scale molecular cloud through comparison with extinction maps, and find that these denser structures correlate with higher cloud column density. Ninety-six individual submillimeter clumps are identified using FellWalker,and their physical properties are examined. These clumps are found to be relatively massive, ranging from 0.5  M to 116  M with a mean mass of 8  M and a median mass of 3.7  M . A stability analysis for the clumps suggests that the majority are (thermally) Jeans stable, withWe further compare the locations of known protostars with the observed submillimeter emission, finding that younger protostars, i.e., Class 0 and I sources, are strongly correlated with submillimeter peaks and that the clumps with protostars are among the most Jeans unstable. Finally, we contrast the evolutionary conditions in the two major star-forming regions within IC 5146: the young cluster associated with the Cocoon Nebula and the more distributed star formation associated with the Northern Streamer filaments. The Cocoon Nebula appears to have converted a higher fraction of its mass into dense clumps and protostars, the clumps are more likely to be Jeans unstable, and a larger fraction of these remaining clumps contain embedded protostars. The Northern Streamer, however, has a larger number of clumps in total and a larger fraction of the known protostars are still embedded within these clumps.

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“…Following on from the highly successful first-generation James Clerk Maxwell Telescope (JCMT) Legacy Surveys, including the Gould Belt Legacy Survey (e.g., Ward-Thompson et al 2007Buckle et al 2010;Graves et al 2010;Sadavoy et al 2013;Pattle et al 2015Pattle et al , 2017Rumble et al 2015;Salji et al 2015;Chen et al 2016;Kirk et al 2016;Mairs et al 2016), the JCMT is currently undertaking a series of second-generation surveys, using the latest instruments to be commissioned on the telescope. These include POL-2, an imaging polarimeter for SCUBA-2.…”

Section: Introductionmentioning

confidence: 99%

First Results from BISTRO: A SCUBA-2 Polarimeter Survey of the Gould Belt

Ward-Thompson

Pattle

Bastien

et al. 2017

ApJ

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We present the first results from the B-fields In STar-forming Region Observations (BISTRO) survey, using the Sub-millimetre Common-User Bolometer Array2 camera, with its associated polarimeter (POL-2), on the James Clerk Maxwell Telescope in Hawaii. We discuss the survey's aims and objectives. We describe the rationale behind the survey, and the questions thatthe survey will aim to answer. The most important of these is the role of magnetic fields in the star formation process on the scale of individual filaments and cores in dense regions. We describe the data acquisition and reduction processes for POL-2, demonstrating both repeatability and consistency with previous data. We present a first-look analysis of the first results from the BISTRO survey in the OMC1 region. We see that the magnetic field lies approximately perpendicular to the famous "integral filament" in the densest regions of that filament. Furthermore, we see an "hourglass" magnetic field morphology extending beyond the densest region of the integral filament into the less-dense surrounding material, and discuss possible causes for this. We also discuss the more complex morphology seen along the Orion Bar region. We examine the morphology of the field along the lower-density northeastern filament. We find consistency with previous theoretical models that predict magnetic fields lying parallel to low-density, non-self-gravitating filaments, and perpendicular to higher-density, self-gravitating filaments.

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

Cited by 28 publications

References 35 publications

The JCMT Gould Belt Survey: A First Look at SCUBA-2 Observations of the Lupus I Molecular Cloud

The JCMT Gould Belt Survey: A First Look at SCUBA-2 Observations of the Lupus I Molecular Cloud

Alma Resolves the Torus of NGC 1068: Continuum and Molecular Line Emission

First Results from BISTRO: A SCUBA-2 Polarimeter Survey of the Gould Belt

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