Kong, Shuo ORCID: 0000-0002-8469-2029, Arce, Hector G., Sargent, Anneila, I, Mairs, Steve, Klessen, Ralf S., Bally, John, Padoan, Paolo ORCID: 0000-0002-5055-5800, Smith, Rowan J., Maureira, Maria Jose, Carpenter, John M., Ginsburg, Adam, Stutz, Amelia M., Goldsmith, Paul, Meingast, Stefan ORCID: 0000-0002-0568-5526, McGehee, Peregrine, Sanchez-Monge, Alvaro, Suri, Suemeyye, Pineda, Jaime E., Alves, Joao ORCID: 0000-0002-4355-0921, Feddersen, Jesse R., Kauffmann, Jens ORCID: 0000-0002-5094-6393 and Schilke, Peter (2019). The CARMA-NRO Orion Survey: Core Emergence and Kinematics in the Orion A Cloud. Astrophys. J., 882 (1). BRISTOL: IOP PUBLISHING LTD. ISSN 1538-4357

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Abstract

We have investigated the formation and kinematics of submillimeter (submm) continuum cores in the Orion A molecular cloud. A comparison between submm continuum and near-infrared extinction shows a continuum core detection threshold of A(v) similar to 5-10 mag. The threshold is similar to the star formation extinction threshold of A(v) similar to 7 mag proposed by recent work, suggesting a universal star formation extinction threshold among clouds within 500 pc to the Sun. A comparison between the Orion A cloud and a massive infrared dark cloud G28.37 +0.07 indicates that Orion A produces more dense gas within the extinction range 15 mag less than or similar to A(v) less than or similar to 60 mag. Using data from the CARMA-NRO Orion Survey, we find that dense cores in the integral-shaped filament (ISF) show subsonic core-to-envelope velocity dispersion that is significantly less than the local envelope line dispersion, similar to what has been found in nearby clouds. Dynamical analysis indicates that the cores are bound to the ISF. An oscillatory core-to-envelope motion is detected along the ISF. Its origin is to be further explored.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Kong, ShuoUNSPECIFIEDorcid.org/0000-0002-8469-2029UNSPECIFIED
Arce, Hector G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sargent, Anneila, IUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mairs, SteveUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Klessen, Ralf S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bally, JohnUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Padoan, PaoloUNSPECIFIEDorcid.org/0000-0002-5055-5800UNSPECIFIED
Smith, Rowan J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Maureira, Maria JoseUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Carpenter, John M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ginsburg, AdamUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Stutz, Amelia M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Goldsmith, PaulUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Meingast, StefanUNSPECIFIEDorcid.org/0000-0002-0568-5526UNSPECIFIED
McGehee, PeregrineUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sanchez-Monge, AlvaroUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Suri, SuemeyyeUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pineda, Jaime E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Alves, JoaoUNSPECIFIEDorcid.org/0000-0002-4355-0921UNSPECIFIED
Feddersen, Jesse R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kauffmann, JensUNSPECIFIEDorcid.org/0000-0002-5094-6393UNSPECIFIED
Schilke, PeterUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-143102
DOI: 10.3847/1538-4357/ab311e
Journal or Publication Title: Astrophys. J.
Volume: 882
Number: 1
Date: 2019
Publisher: IOP PUBLISHING LTD
Place of Publication: BRISTOL
ISSN: 1538-4357
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
REGULATED STAR-FORMATION; DUST CONTINUUM EMISSION; C2D LEGACY CLOUDS; GOULD BELT SURVEY; BOLOCAM SURVEY; LARGE-SCALE; MILKY-WAY; DENSITY; GASMultiple languages
Astronomy & AstrophysicsMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/14310

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