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The APEX Large CO H...
The APEX Large CO Heterodyne Orion Legacy Survey (ALCOHOLS): I. Survey overview
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- Stanke, T. (author)
- European Southern Observatory (ESO)
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- Arce, Héctor G. (author)
- Yale University
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- Bally, J. (author)
- University of Colorado at Boulder
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- Bergman, Per, 1960 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Carpenter, J. (author)
- Atacama Large Millimeter-submillimeter Array (ALMA)
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- Davis, C. J. (author)
- National Science Foundation
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- Dent, W. R. F. (author)
- Atacama Large Millimeter-submillimeter Array (ALMA)
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- Di Francesco, J. (author)
- University of Victoria,National Research Council Canada
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- Eisloffel, J. (author)
- Thüringer Landessternwarte Tautenburg
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- Froebrich, D. (author)
- University Of Kent
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- Ginsburg, A. (author)
- University of Florida
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- Heyer, M. (author)
- University of Massachusetts
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- Johnstone, D. (author)
- National Research Council Canada,University of Victoria
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- Mardones, Diego (author)
- Universidad de Chile (UCH),University of Chile (UCH)
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- McCaughrean, M. J. (author)
- European Space Research and Technology Centre (ESA ESTEC)
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- Megeath, S. Thomas (author)
- University of Toledo
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- Nakamura, F. (author)
- National Astronomical Observatory of Japan
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- Smith, M. D. (author)
- University Of Kent
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- Stutz, A. (author)
- Universidad de Concepción,University of Concepcion
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- Tatematsu, Ken'ichi (author)
- National Astronomical Observatory of Japan
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- Walker, Christopher K. (author)
- University of Arizona
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- Williams, J. P. (author)
- University of Hawaii
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Zinnecker, H. (author)
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- Swift, B. J. (author)
- University of Arizona
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- Kulesa, Craig (author)
- University of Arizona
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- Peters, B. (author)
- University of Arizona
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- Duffy, B. (author)
- University of Arizona
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- Kloosterman, J. (author)
- University of Southern Indiana
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Yildiz, U. A. (author)
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Pineda, J. L. (author)
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- De Breuck, C. (author)
- European Southern Observatory (ESO)
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- Klein, Th (author)
- European Southern Observatory Santiago
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(creator_code:org_t)
- 2022-02-18
- 2022
- English.
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In: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 658
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https://doi.org/10.1...
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Abstract
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- Context. The Orion molecular cloud complex harbours the nearest Giant Molecular Clouds (GMCs) and the nearest site of high-mass star formation. Its young star and protostar populations are thoroughly characterized. The region is therefore a prime target for the study of star formation. Aims. Here, we verify the performance of the SuperCAM 64 pixel heterodyne array on the Atacama Pathfinder Experiment (APEX). We give a descriptive overview of a set of wide-field CO(32) spectral line cubes obtained towards the Orion GMC complex, aimed at characterizing the dynamics and structure of the extended molecular gas in diverse regions of the clouds, ranging from very active sites of clustered star formation in Orion B to comparatively quiet regions in southern Orion A. In a future publication, we will characterize the full population of protostellar outflows and their feedback over an entire GMC. Methods. We present a 2.7 square degree (130 pc2) mapping survey in the 12CO(32) transition, obtained using SuperCAM on APEX at an angular resolution of 19 (7600 AU or 0.037 pc at a distance of 400 pc), covering the main sites of star formation in the Orion B cloud (L 1622, NGC 2071, NGC 2068, Ori B9, NGC 2024, and NGC 2023), and a large patch in the southern part of the L 1641 cloud in Orion A. Results. We describe CO integrated line emission and line moment maps and position-velocity diagrams for all survey fields and discuss a few sub-regions in some detail. Evidence for expanding bubbles is seen with lines splitting into double components, often in areas of optical nebulosities, most prominently in the NGC 2024 H II region, where we argue that the bulk of the molecular gas is in the foreground of the H II region. High CO(32)/CO(10) line ratios reveal warm CO along the western edge of the Orion B cloud in the NGC 2023 & NGC 2024 region facing the IC 434 H II region. We see multiple, well separated radial velocity cloud components towards several fields and propose that L 1641-S consists of a sequence of clouds at increasingly larger distances. We find a small, seemingly spherical cloud, which we term Cow Nebula globule, north of NGC 2071. We confirm that we can trace high velocity line wings out to the extremely high velocity regime in protostellar molecular outflows for the NGC 2071-IR outflow and the NGC 2024 CO jet, and identify the protostellar dust core FIR4 (rather than FIR5) as the true driving source of the NGC 2024 monopolar outflow.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Meteorologi och atmosfärforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Meteorology and Atmospheric Sciences (hsv//eng)
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
- SAMHÄLLSVETENSKAP -- Social och ekonomisk geografi -- Ekonomisk geografi (hsv//swe)
- SOCIAL SCIENCES -- Social and Economic Geography -- Economic Geography (hsv//eng)
Keyword
- ISM: structure
- ISM: jets and outflows
- Submillimeter: ISM
- ISM: kinematics and dynamics
- ISM: clouds
- ISM: bubbles
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Stanke, T.
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Arce, Héctor G.
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Bally, J.
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Bergman, Per, 19 ...
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Carpenter, J.
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Davis, C. J.
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show more...
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Dent, W. R. F.
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Di Francesco, J.
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Eisloffel, J.
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Froebrich, D.
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Ginsburg, A.
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Heyer, M.
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Johnstone, D.
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Mardones, Diego
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McCaughrean, M. ...
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Megeath, S. Thom ...
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Nakamura, F.
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Smith, M. D.
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Stutz, A.
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Tatematsu, Ken'i ...
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Walker, Christop ...
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Williams, J. P.
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Zinnecker, H.
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Swift, B. J.
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Kulesa, Craig
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Peters, B.
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Duffy, B.
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Kloosterman, J.
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Yildiz, U. A.
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Pineda, J. L.
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De Breuck, C.
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Klein, Th
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Earth and Relate ...
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and Meteorology and ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
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- SOCIAL SCIENCES
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SOCIAL SCIENCES
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and Social and Econo ...
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and Economic Geograp ...
- Articles in the publication
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Astronomy and As ...
- By the university
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Chalmers University of Technology