Universität zu Köln

Kong, Shuo ORCID: 0000-0002-8469-2029, Arce, Hector G., Carpenter, John M., Bally, John, Ossenkopf-Okada, Volker ORCID: 0000-0002-8351-3877, Sanchez-Monge, Alvaro ORCID: 0000-0002-3078-9482, Sargent, Anneila I., Suri, Sumeyye, McGehee, Peregrine ORCID: 0000-0003-0948-6716, Lis, Dariusz C., Klessen, Ralf S., Mairs, Steve ORCID: 0000-0002-6956-0730, Zucker, Catherine, Smith, Rowan J., Nakamura, Fumitaka, Pillai, Thushara G. S., Kauffmann, Jens ORCID: 0000-0002-5094-6393 and Zhang, Shaobo (2021). High-resolution CARMA Observation of Molecular Gas in the North America and Pelican Nebulae. Astron. J., 161 (5). BRISTOL: IOP PUBLISHING LTD. ISSN 1538-3881

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Abstract

In this paper, we present the first results from a CARMA high-resolution (CO)-C-12(1-0), (CO)-C-13(1-0), and (CO)-O-18(1-0) molecular line survey of the North America and Pelican (NAP) Nebulae. CARMA observations have been combined with single-dish data from the Purple Mountain 13.7 m telescope, to add short spacings and to produce high-dynamic-range images. We find that the molecular gas is predominantly shaped by the W80 H ii bubble, driven by an O star. Several bright rims noted in the observation are probably remnant molecular clouds, heated and stripped by the massive star. Matching these rims in molecular lines and optical images, we construct a model of the three-dimensional structure of the NAP complex. Two groups of molecular clumps/filaments are on the near side of the bubble: one is being pushed toward us, whereas the other is moving toward the bubble. Another group is on the far side of the bubble, and moving away. The young stellar objects in the Gulf region reside in three different clusters, each hosted by a cloud from one of the three molecular clump groups. Although all gas content in the NAP is impacted by feedback from the central O star, some regions show no signs of star formation, while other areas clearly exhibit star formation activity. Additional molecular gas being carved by feedback includes cometary structures in the Pelican Head region, and the boomerang features at the boundary of the Gulf region. The results show that the NAP complex is an ideal place for the study of feedback effects on star formation.

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 Carpenter, John M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Bally, John UNSPECIFIED UNSPECIFIED UNSPECIFIED Ossenkopf-Okada, Volker UNSPECIFIED orcid.org/0000-0002-8351-3877 UNSPECIFIED Sanchez-Monge, Alvaro UNSPECIFIED orcid.org/0000-0002-3078-9482 UNSPECIFIED Sargent, Anneila I. UNSPECIFIED UNSPECIFIED UNSPECIFIED Suri, Sumeyye UNSPECIFIED UNSPECIFIED UNSPECIFIED McGehee, Peregrine UNSPECIFIED orcid.org/0000-0003-0948-6716 UNSPECIFIED Lis, Dariusz C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Klessen, Ralf S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Mairs, Steve UNSPECIFIED orcid.org/0000-0002-6956-0730 UNSPECIFIED Zucker, Catherine UNSPECIFIED UNSPECIFIED UNSPECIFIED Smith, Rowan J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Nakamura, Fumitaka UNSPECIFIED UNSPECIFIED UNSPECIFIED Pillai, Thushara G. S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kauffmann, Jens UNSPECIFIED orcid.org/0000-0002-5094-6393 UNSPECIFIED Zhang, Shaobo UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-605165
DOI:	10.3847/1538-3881/abec7d
Journal or Publication Title:	Astron. J.
Volume:	161
Number:	5
Date:	2021
Publisher:	IOP PUBLISHING LTD
Place of Publication:	BRISTOL
ISSN:	1538-3881
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language H-II REGIONS; STAR-FORMATION; INTERSTELLAR CLOUDS; MILKY-WAY; COMPLEX; EXTINCTION; DISTANCES; EVOLUTION; OUTFLOWS Multiple languages Astronomy & Astrophysics Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/60516