The Spitzer survey of interstellar clouds in the Gould Belt. III. A multi-wavelength view of Corona Australis

Dawn E. Peterson; Alessio Caratti o Garatti; Tyler L. Bourke; Jan Forbrich; Robert A. Gutermuth; Jes Kristian Jørgensen; Lori E. Allen; Brian M. Patten; Michael M. Dunham; Paul M. Harvey; Bruno Merín; Nicholas L. Chapman; Lucas A. Cieza; Tracy L. Huard; Claudia Knez; Brian Prager; Neal J. Evans

doi:10.1088/0067-0049/194/2/43

The Spitzer survey of interstellar clouds in the Gould Belt. III. A multi-wavelength view of Corona Australis

Dawn E. Peterson, Alessio Caratti o Garatti, Tyler L. Bourke, Jan Forbrich, Robert A. Gutermuth, Jes Kristian Jørgensen, Lori E. Allen, Brian M. Patten, Michael M. Dunham, Paul M. Harvey, Bruno Merín, Nicholas L. Chapman, Lucas A. Cieza, Tracy L. Huard, Claudia Knez, Brian Prager, Neal J. Evans

44 Citations (Scopus)

Abstract

We present Spitzer Space Telescope IRAC and MIPS observations of a 0.85deg² field including the Corona Australis (CrA) star-forming region. At a distance of 130pc, CrA is one of the closest regions known to be actively forming stars, particularly within its embedded association, the Coronet. Using the Spitzer data, we identify 51 young stellar objects (YSOs) in CrA which include sources in the well-studied Coronet cluster as well as sources distributed throughout the molecular cloud. Twelve of the YSOs discussed are new candidates, one of which is located in the Coronet. Known YSOs retrieved from the literature are also added to the list, and a total of 116 candidate YSOs in CrA are compiled. Based on these YSO candidates, the star formation rate is computed to be 12 M Myr^-1, similar to that of the Lupus clouds. A clustering analysis was also performed, finding that the main cluster core, consisting of 68 members, is elongated (having an aspect ratio of 2.36), with a circular radius of 0.59pc and mean surface density of 150pc^-2. In addition, we analyze outflows and jets in CrA by means of new CO and H ₂ data. We present 1.3mm interferometric continuum observations made with the Submillimeter Array (SMA) covering RCrA, IRS5, IRS7, and IRAS18595-3712 (IRAS32). We also present multi-epoch H₂ maps and detect jets and outflows, study their proper motions, and identify exciting sources. The Spitzer and ISAAC/VLT observations of IRAS32 show a bipolar precessing jet, which drives a CO(2-1) outflow detected in the SMA observations. There is also clear evidence for a parsec-scale precessing outflow, which is east-west oriented and originates in the SMA2 region and likely driven by SMA2 or IRS7A.

Original language	English
Article number	43
Journal	Astrophysical Journal Supplement Series
Volume	194
Number of pages	43
ISSN	0067-0049
DOIs	https://doi.org/10.1088/0067-0049/194/2/43
Publication status	Published - 1 Jun 2011

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Peterson, D. E., Caratti o Garatti, A., Bourke, T. L., Forbrich, J., Gutermuth, R. A., Jørgensen, J. K., Allen, L. E., Patten, B. M., Dunham, M. M., Harvey, P. M., Merín, B., Chapman, N. L., Cieza, L. A., Huard, T. L., Knez, C., Prager, B., & Evans, N. J. (2011). The Spitzer survey of interstellar clouds in the Gould Belt. III. A multi-wavelength view of Corona Australis. Astrophysical Journal Supplement Series, 194, [43]. https://doi.org/10.1088/0067-0049/194/2/43

Peterson, DE, Caratti o Garatti, A, Bourke, TL, Forbrich, J, Gutermuth, RA, Jørgensen, JK, Allen, LE, Patten, BM, Dunham, MM, Harvey, PM, Merín, B, Chapman, NL, Cieza, LA, Huard, TL, Knez, C, Prager, B & Evans, NJ 2011, 'The Spitzer survey of interstellar clouds in the Gould Belt. III. A multi-wavelength view of Corona Australis', Astrophysical Journal Supplement Series, vol. 194, 43. https://doi.org/10.1088/0067-0049/194/2/43

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title = "The Spitzer survey of interstellar clouds in the Gould Belt. III. A multi-wavelength view of Corona Australis",

abstract = "We present Spitzer Space Telescope IRAC and MIPS observations of a 0.85deg2 field including the Corona Australis (CrA) star-forming region. At a distance of 130pc, CrA is one of the closest regions known to be actively forming stars, particularly within its embedded association, the Coronet. Using the Spitzer data, we identify 51 young stellar objects (YSOs) in CrA which include sources in the well-studied Coronet cluster as well as sources distributed throughout the molecular cloud. Twelve of the YSOs discussed are new candidates, one of which is located in the Coronet. Known YSOs retrieved from the literature are also added to the list, and a total of 116 candidate YSOs in CrA are compiled. Based on these YSO candidates, the star formation rate is computed to be 12 M Myr-1, similar to that of the Lupus clouds. A clustering analysis was also performed, finding that the main cluster core, consisting of 68 members, is elongated (having an aspect ratio of 2.36), with a circular radius of 0.59pc and mean surface density of 150pc-2. In addition, we analyze outflows and jets in CrA by means of new CO and H 2 data. We present 1.3mm interferometric continuum observations made with the Submillimeter Array (SMA) covering RCrA, IRS5, IRS7, and IRAS18595-3712 (IRAS32). We also present multi-epoch H2 maps and detect jets and outflows, study their proper motions, and identify exciting sources. The Spitzer and ISAAC/VLT observations of IRAS32 show a bipolar precessing jet, which drives a CO(2-1) outflow detected in the SMA observations. There is also clear evidence for a parsec-scale precessing outflow, which is east-west oriented and originates in the SMA2 region and likely driven by SMA2 or IRS7A.",

author = "Peterson, {Dawn E.} and {Caratti o Garatti}, Alessio and Bourke, {Tyler L.} and Jan Forbrich and Gutermuth, {Robert A.} and J{\o}rgensen, {Jes Kristian} and Allen, {Lori E.} and Patten, {Brian M.} and Dunham, {Michael M.} and Harvey, {Paul M.} and Bruno Mer{\'i}n and Chapman, {Nicholas L.} and Cieza, {Lucas A.} and Huard, {Tracy L.} and Claudia Knez and Brian Prager and Evans, {Neal J.}",

year = "2011",

month = jun,

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doi = "10.1088/0067-0049/194/2/43",

language = "English",

volume = "194",

journal = "Astrophysical Journal, Supplement Series",

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TY - JOUR

T1 - The Spitzer survey of interstellar clouds in the Gould Belt. III. A multi-wavelength view of Corona Australis

AU - Peterson, Dawn E.

AU - Caratti o Garatti, Alessio

AU - Bourke, Tyler L.

AU - Forbrich, Jan

AU - Gutermuth, Robert A.

AU - Jørgensen, Jes Kristian

AU - Allen, Lori E.

AU - Patten, Brian M.

AU - Dunham, Michael M.

AU - Harvey, Paul M.

AU - Merín, Bruno

AU - Chapman, Nicholas L.

AU - Cieza, Lucas A.

AU - Huard, Tracy L.

AU - Knez, Claudia

AU - Prager, Brian

AU - Evans, Neal J.

PY - 2011/6/1

Y1 - 2011/6/1

N2 - We present Spitzer Space Telescope IRAC and MIPS observations of a 0.85deg2 field including the Corona Australis (CrA) star-forming region. At a distance of 130pc, CrA is one of the closest regions known to be actively forming stars, particularly within its embedded association, the Coronet. Using the Spitzer data, we identify 51 young stellar objects (YSOs) in CrA which include sources in the well-studied Coronet cluster as well as sources distributed throughout the molecular cloud. Twelve of the YSOs discussed are new candidates, one of which is located in the Coronet. Known YSOs retrieved from the literature are also added to the list, and a total of 116 candidate YSOs in CrA are compiled. Based on these YSO candidates, the star formation rate is computed to be 12 M Myr-1, similar to that of the Lupus clouds. A clustering analysis was also performed, finding that the main cluster core, consisting of 68 members, is elongated (having an aspect ratio of 2.36), with a circular radius of 0.59pc and mean surface density of 150pc-2. In addition, we analyze outflows and jets in CrA by means of new CO and H 2 data. We present 1.3mm interferometric continuum observations made with the Submillimeter Array (SMA) covering RCrA, IRS5, IRS7, and IRAS18595-3712 (IRAS32). We also present multi-epoch H2 maps and detect jets and outflows, study their proper motions, and identify exciting sources. The Spitzer and ISAAC/VLT observations of IRAS32 show a bipolar precessing jet, which drives a CO(2-1) outflow detected in the SMA observations. There is also clear evidence for a parsec-scale precessing outflow, which is east-west oriented and originates in the SMA2 region and likely driven by SMA2 or IRS7A.

AB - We present Spitzer Space Telescope IRAC and MIPS observations of a 0.85deg2 field including the Corona Australis (CrA) star-forming region. At a distance of 130pc, CrA is one of the closest regions known to be actively forming stars, particularly within its embedded association, the Coronet. Using the Spitzer data, we identify 51 young stellar objects (YSOs) in CrA which include sources in the well-studied Coronet cluster as well as sources distributed throughout the molecular cloud. Twelve of the YSOs discussed are new candidates, one of which is located in the Coronet. Known YSOs retrieved from the literature are also added to the list, and a total of 116 candidate YSOs in CrA are compiled. Based on these YSO candidates, the star formation rate is computed to be 12 M Myr-1, similar to that of the Lupus clouds. A clustering analysis was also performed, finding that the main cluster core, consisting of 68 members, is elongated (having an aspect ratio of 2.36), with a circular radius of 0.59pc and mean surface density of 150pc-2. In addition, we analyze outflows and jets in CrA by means of new CO and H 2 data. We present 1.3mm interferometric continuum observations made with the Submillimeter Array (SMA) covering RCrA, IRS5, IRS7, and IRAS18595-3712 (IRAS32). We also present multi-epoch H2 maps and detect jets and outflows, study their proper motions, and identify exciting sources. The Spitzer and ISAAC/VLT observations of IRAS32 show a bipolar precessing jet, which drives a CO(2-1) outflow detected in the SMA observations. There is also clear evidence for a parsec-scale precessing outflow, which is east-west oriented and originates in the SMA2 region and likely driven by SMA2 or IRS7A.

U2 - 10.1088/0067-0049/194/2/43

DO - 10.1088/0067-0049/194/2/43

M3 - Journal article

SN - 0067-0049

VL - 194

JO - Astrophysical Journal, Supplement Series

JF - Astrophysical Journal, Supplement Series

M1 - 43

ER -

The Spitzer survey of interstellar clouds in the Gould Belt. III. A multi-wavelength view of Corona Australis

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