High-resolution CARMA observation of molecular gas in the North America and Pelican Nebulae

Shuo Kong; Héctor G. Arce; John M. Carpenter; John Bally; Volker Ossenkopf-Okada; Álvaro Sánchez-Monge; Anneila I. Sargent; Sümeyye Suri; Peregrine McGehee; Dariusz C. Lis; Ralf Klessen; Steve Mairs; Catherine Zucker; Rowan J. Smith; Fumitaka Nakamura; Thushara G. S. Pillai; Jens Kauffmann; Shaobo Zhang

doi:10.3847/1538-3881/abec7d

High-resolution CARMA observation of molecular gas in the North America and Pelican Nebulae

Shuo Kong, Héctor G. Arce, John M. Carpenter, John Bally, Volker Ossenkopf-Okada, Álvaro Sánchez-Monge, Anneila I. Sargent, Sümeyye Suri, Peregrine McGehee, Dariusz C. Lis, Ralf Klessen, Steve Mairs, Catherine Zucker, Rowan J. Smith, Fumitaka Nakamura, Thushara G. S. Pillai, Jens Kauffmann, Shaobo Zhang

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

In this paper, we present the first results from a CARMA high-resolution ¹²CO(1-0), ¹³CO(1-0), and C¹⁸O(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.

Original language	English
Article number	229
Journal	Astronomical Journal
Volume	161
Issue number	5
Early online date	23 Apr 2021
DOIs	https://doi.org/10.3847/1538-3881/abec7d
Publication status	Published - 1 May 2021

Access to Document

10.3847/1538-3881/abec7d

Kong-2021-High-resolution-CARMA-ApJL-AAM
Copyright © 2021 American Astronomical Society. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the author created accepted manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.3847/1538-3881/abec7d.
Accepted author manuscript, 60 MB

http://arxiv.org/abs/2103.04418Licence: CC BY

Cite this

Kong, S., Arce, H. G., Carpenter, J. M., Bally, J., Ossenkopf-Okada, V., Sánchez-Monge, Á., Sargent, A. I., Suri, S., McGehee, P., Lis, D. C., Klessen, R., Mairs, S., Zucker, C., Smith, R. J., Nakamura, F., Pillai, T. G. S., Kauffmann, J., & Zhang, S. (2021). High-resolution CARMA observation of molecular gas in the North America and Pelican Nebulae. Astronomical Journal, 161(5), Article 229. https://doi.org/10.3847/1538-3881/abec7d

@article{beddb890376f4cbf8b427615acc023f0,

title = "High-resolution CARMA observation of molecular gas in the North America and Pelican Nebulae",

abstract = "In this paper, we present the first results from a CARMA high-resolution 12CO(1-0), 13CO(1-0), and C18O(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.",

author = "Shuo Kong and Arce, {H{\'e}ctor G.} and Carpenter, {John M.} and John Bally and Volker Ossenkopf-Okada and {\'A}lvaro S{\'a}nchez-Monge and Sargent, {Anneila I.} and S{\"u}meyye Suri and Peregrine McGehee and Lis, {Dariusz C.} and Ralf Klessen and Steve Mairs and Catherine Zucker and Smith, {Rowan J.} and Fumitaka Nakamura and Pillai, {Thushara G. S.} and Jens Kauffmann and Shaobo Zhang",

note = "Funding: S.S. acknowledges support from the European Research Council under the Horizon 2020 Framework Program, via the ERC Consolidator Grant CSF-648505. European Research Council, via the ERC Synergy Grant “ECOGAL—Understanding our Galactic ecosystem: From the disk of the Milky Way to the formation sites of stars and planets” (project ID 855130) (R.S.K.). R.J.S. acknowledges funding from an STFC ERF (grant ST/N00485X/1).",

year = "2021",

month = may,

day = "1",

doi = "10.3847/1538-3881/abec7d",

language = "English",

volume = "161",

journal = "Astronomical Journal",

issn = "0004-6256",

publisher = "American Astronomical Society",

number = "5",

}

Kong, S, Arce, HG, Carpenter, JM, Bally, J, Ossenkopf-Okada, V, Sánchez-Monge, Á, Sargent, AI, Suri, S, McGehee, P, Lis, DC, Klessen, R, Mairs, S, Zucker, C, Smith, RJ, Nakamura, F, Pillai, TGS, Kauffmann, J & Zhang, S 2021, 'High-resolution CARMA observation of molecular gas in the North America and Pelican Nebulae', Astronomical Journal, vol. 161, no. 5, 229. https://doi.org/10.3847/1538-3881/abec7d

TY - JOUR

T1 - High-resolution CARMA observation of molecular gas in the North America and Pelican Nebulae

AU - Kong, Shuo

AU - Arce, Héctor G.

AU - Carpenter, John M.

AU - Bally, John

AU - Ossenkopf-Okada, Volker

AU - Sánchez-Monge, Álvaro

AU - Sargent, Anneila I.

AU - Suri, Sümeyye

AU - McGehee, Peregrine

AU - Lis, Dariusz C.

AU - Klessen, Ralf

AU - Mairs, Steve

AU - Zucker, Catherine

AU - Smith, Rowan J.

AU - Nakamura, Fumitaka

AU - Pillai, Thushara G. S.

AU - Kauffmann, Jens

AU - Zhang, Shaobo

N1 - Funding: S.S. acknowledges support from the European Research Council under the Horizon 2020 Framework Program, via the ERC Consolidator Grant CSF-648505. European Research Council, via the ERC Synergy Grant “ECOGAL—Understanding our Galactic ecosystem: From the disk of the Milky Way to the formation sites of stars and planets” (project ID 855130) (R.S.K.). R.J.S. acknowledges funding from an STFC ERF (grant ST/N00485X/1).

PY - 2021/5/1

Y1 - 2021/5/1

N2 - In this paper, we present the first results from a CARMA high-resolution 12CO(1-0), 13CO(1-0), and C18O(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.

AB - In this paper, we present the first results from a CARMA high-resolution 12CO(1-0), 13CO(1-0), and C18O(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.

U2 - 10.3847/1538-3881/abec7d

DO - 10.3847/1538-3881/abec7d

M3 - Article

SN - 0004-6256

VL - 161

JO - Astronomical Journal

JF - Astronomical Journal

IS - 5

M1 - 229

ER -

High-resolution CARMA observation of molecular gas in the North America and Pelican Nebulae

Abstract

Access to Document

Fingerprint

Cite this