Universität zu Köln

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 ORCID: 0000-0003-2141-5689 (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:	Creators Email ORCID ORCID Put Code Kong, Shuo UNSPECIFIED orcid.org/0000-0002-8469-2029 UNSPECIFIED Arce, Hector G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Sargent, Anneila, I UNSPECIFIED UNSPECIFIED UNSPECIFIED Mairs, Steve UNSPECIFIED UNSPECIFIED UNSPECIFIED Klessen, Ralf S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bally, John UNSPECIFIED UNSPECIFIED UNSPECIFIED Padoan, Paolo UNSPECIFIED orcid.org/0000-0002-5055-5800 UNSPECIFIED Smith, Rowan J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Maureira, Maria Jose UNSPECIFIED UNSPECIFIED UNSPECIFIED Carpenter, John M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Ginsburg, Adam UNSPECIFIED UNSPECIFIED UNSPECIFIED Stutz, Amelia M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Goldsmith, Paul UNSPECIFIED UNSPECIFIED UNSPECIFIED Meingast, Stefan UNSPECIFIED orcid.org/0000-0002-0568-5526 UNSPECIFIED McGehee, Peregrine UNSPECIFIED UNSPECIFIED UNSPECIFIED Sanchez-Monge, Alvaro UNSPECIFIED UNSPECIFIED UNSPECIFIED Suri, Suemeyye UNSPECIFIED UNSPECIFIED UNSPECIFIED Pineda, Jaime E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Alves, Joao UNSPECIFIED orcid.org/0000-0002-4355-0921 UNSPECIFIED Feddersen, Jesse R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kauffmann, Jens UNSPECIFIED orcid.org/0000-0002-5094-6393 UNSPECIFIED Schilke, Peter UNSPECIFIED orcid.org/0000-0003-2141-5689 UNSPECIFIED
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:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Physics > Institute of Physics I
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language REGULATED STAR-FORMATION; DUST CONTINUUM EMISSION; C2D LEGACY CLOUDS; GOULD BELT SURVEY; BOLOCAM SURVEY; LARGE-SCALE; MILKY-WAY; DENSITY; GAS Multiple languages Astronomy & Astrophysics Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/14310