Accurate OH Maser Positions from the SPLASH Survey. III. The Final 96 deg2
We present high spatial resolution observations of ground-state OH masers achieved with the Australia Telescope Compact Array (ATCA). These observations targeted 253 pointing centers containing OH maser candidates at all four ground-state OH transitions identified in the Southern Parkes Large-Area S...
| Autores: | , , , , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2020 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/211508 |
| Acceso en línea: | http://hdl.handle.net/10261/211508 |
| Access Level: | acceso abierto |
| Palabra clave: | Catalogues Interstellar molecules Circumstellar masers Interstellar masers Star formation Asymptotic giant branch stars Post-asymptotic giant branch |
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| dc.title.none.fl_str_mv |
Accurate OH Maser Positions from the SPLASH Survey. III. The Final 96 deg2 |
| title |
Accurate OH Maser Positions from the SPLASH Survey. III. The Final 96 deg2 |
| spellingShingle |
Accurate OH Maser Positions from the SPLASH Survey. III. The Final 96 deg2 Qiao, Hai-Hua Catalogues Interstellar molecules Circumstellar masers Interstellar masers Star formation Asymptotic giant branch stars Post-asymptotic giant branch |
| title_short |
Accurate OH Maser Positions from the SPLASH Survey. III. The Final 96 deg2 |
| title_full |
Accurate OH Maser Positions from the SPLASH Survey. III. The Final 96 deg2 |
| title_fullStr |
Accurate OH Maser Positions from the SPLASH Survey. III. The Final 96 deg2 |
| title_full_unstemmed |
Accurate OH Maser Positions from the SPLASH Survey. III. The Final 96 deg2 |
| title_sort |
Accurate OH Maser Positions from the SPLASH Survey. III. The Final 96 deg2 |
| dc.creator.none.fl_str_mv |
Qiao, Hai-Hua Breen, Shari L. Gómez, José F. Dawson, J.R. Walsh, Andrew J. Green, James A. Ellingsen, Simon P. Imai, Hiroshi Shen, Zhi-Qiang |
| author |
Qiao, Hai-Hua |
| author_facet |
Qiao, Hai-Hua Breen, Shari L. Gómez, José F. Dawson, J.R. Walsh, Andrew J. Green, James A. Ellingsen, Simon P. Imai, Hiroshi Shen, Zhi-Qiang |
| author_role |
author |
| author2 |
Breen, Shari L. Gómez, José F. Dawson, J.R. Walsh, Andrew J. Green, James A. Ellingsen, Simon P. Imai, Hiroshi Shen, Zhi-Qiang |
| author2_role |
author author author author author author author author |
| dc.contributor.none.fl_str_mv |
Chinese Academy of Sciences National Natural Science Foundation of China Ministerio de Economía y Competitividad (España) European Commission Ministerio de Ciencia, Innovación y Universidades (España) Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72] |
| dc.subject.none.fl_str_mv |
Catalogues Interstellar molecules Circumstellar masers Interstellar masers Star formation Asymptotic giant branch stars Post-asymptotic giant branch |
| topic |
Catalogues Interstellar molecules Circumstellar masers Interstellar masers Star formation Asymptotic giant branch stars Post-asymptotic giant branch |
| description |
We present high spatial resolution observations of ground-state OH masers achieved with the Australia Telescope Compact Array (ATCA). These observations targeted 253 pointing centers containing OH maser candidates at all four ground-state OH transitions identified in the Southern Parkes Large-Area Survey in Hydroxyl (SPLASH) across 96 deg<SUP>2</SUP> of the southern Galactic plane (332° < l < 334° and −2° < b < +2°, 344° < l < 355° and −2° < b < +2°, 358° < l < 4° and +2° < b < +6°, 5° < l < 10° and −2° < b < +2°). We detect maser emission toward 236 fields and suggest that 7 out of 17 nondetections are due to the slightly lower sensitivity of the ATCA observations, combined with some temporal variability. The superior resolution provided by the ATCA data has allowed us to identify 362 OH maser sites in the 236 target fields. Almost half (160 of 362) of these masers have been detected for the first time. Comparison between these 362 maser sites and information presented in the literature allowed us to categorize 238 sites as evolved star sites (66%), 63 as star formation (17%), 8 as supernova remnants, and 53 as unknown maser sites (15%). We present an analysis of the OH masers across the full SPLASH survey range (176 deg<SUP>2</SUP>) and find that the detection rate of 1.7 GHz radio continuum sources (18%) is lower than that previously found at 8.2 and 9.2 GHz (38%). We also find that the velocity separations of evolved star sites with symmetric 1612 MHz maser profiles are generally smaller than those with asymmetric profiles.© 2020. The American Astronomical Society. All rights reserved. |
| publishDate |
2020 |
| dc.date.none.fl_str_mv |
2020 2020 2020 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article http://purl.org/coar/resource_type/c_6501 Postprint info:eu-repo/semantics/acceptedVersion |
| format |
article |
| status_str |
acceptedVersion |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/10261/211508 |
| url |
http://hdl.handle.net/10261/211508 |
| dc.language.none.fl_str_mv |
Inglés |
| language_invalid_str_mv |
Inglés |
| dc.relation.none.fl_str_mv |
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info:eu-repo/semantics/openAccess |
| eu_rights_str_mv |
openAccess |
| dc.publisher.none.fl_str_mv |
IOP Publishing |
| publisher.none.fl_str_mv |
IOP Publishing |
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reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC instname:Consejo Superior de Investigaciones Científicas (CSIC) |
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Consejo Superior de Investigaciones Científicas (CSIC) |
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DIGITAL.CSIC. Repositorio Institucional del CSIC |
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DIGITAL.CSIC. Repositorio Institucional del CSIC |
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1869420971039916032 |
| spelling |
Accurate OH Maser Positions from the SPLASH Survey. III. The Final 96 deg2Qiao, Hai-HuaBreen, Shari L.Gómez, José F.Dawson, J.R.Walsh, Andrew J.Green, James A.Ellingsen, Simon P.Imai, HiroshiShen, Zhi-QiangCataloguesInterstellar moleculesCircumstellar masersInterstellar masersStar formationAsymptotic giant branch starsPost-asymptotic giant branchWe present high spatial resolution observations of ground-state OH masers achieved with the Australia Telescope Compact Array (ATCA). These observations targeted 253 pointing centers containing OH maser candidates at all four ground-state OH transitions identified in the Southern Parkes Large-Area Survey in Hydroxyl (SPLASH) across 96 deg<SUP>2</SUP> of the southern Galactic plane (332° < l < 334° and −2° < b < +2°, 344° < l < 355° and −2° < b < +2°, 358° < l < 4° and +2° < b < +6°, 5° < l < 10° and −2° < b < +2°). We detect maser emission toward 236 fields and suggest that 7 out of 17 nondetections are due to the slightly lower sensitivity of the ATCA observations, combined with some temporal variability. The superior resolution provided by the ATCA data has allowed us to identify 362 OH maser sites in the 236 target fields. Almost half (160 of 362) of these masers have been detected for the first time. Comparison between these 362 maser sites and information presented in the literature allowed us to categorize 238 sites as evolved star sites (66%), 63 as star formation (17%), 8 as supernova remnants, and 53 as unknown maser sites (15%). We present an analysis of the OH masers across the full SPLASH survey range (176 deg<SUP>2</SUP>) and find that the detection rate of 1.7 GHz radio continuum sources (18%) is lower than that previously found at 8.2 and 9.2 GHz (38%). We also find that the velocity separations of evolved star sites with symmetric 1612 MHz maser profiles are generally smaller than those with asymmetric profiles.© 2020. The American Astronomical Society. All rights reserved.The Australia Telescope Compact Array is part of the Australia Telescope, which is funded by the Commonwealth of Australia for operation as a National Facility managed by CSIRO. This research has made use of NASA's Astrophysics Data System Abstract Service and the SIMBAD database, operated at CDS, Strasbourg, France. This work is based in part on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration (NASA). This publication also makes use of data products from the Wide-field Infrared Survey Explorer, which is a joint project of the University of California Institute of Technology, funded by NASA. H.-H.Q. is partially supported by the Special Funding for Advanced Users, budgeted and administrated by the Center for Astronomical Mega-Science, Chinese Academy of Sciences (CAMS-CAS), CAS "Light of West China" Program, and the National Natural Science Foundation of China (grant No. 11903038). J.F.G. is partially supported by MINECO (Spain) grant AYA2017-84390-C2-1-R (cofunded by FEDER) and the State Agency for Research of the Spanish MCIU through the "Center of Excellence Severo Ochoa" award for the Instituto de Astrofísica de Andalucía (SEV-2017-0709). This work was supported in part by the Major Program of the National Natural Science Foundation of China (grant Nos. 11590780 and 11590784) and the CAS Pioneer Hundred Talents Program (Technological excellence, Y650YC1201). H.I. was supported by the JSPS Bilateral Collaboration Program and KAKENHI programs 25610043 and 16H02167.Peer reviewedIOP PublishingChinese Academy of SciencesNational Natural Science Foundation of ChinaMinisterio de Economía y Competitividad (España)European CommissionMinisterio de Ciencia, Innovación y Universidades (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202020202020info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/211508reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AYA2017-84390-C2-1-Rinfo:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/SEV-2017-0709http://dx.doi.org/10.3847/1538-4365/ab655dSíinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2115082026-05-22T06:33:51Z |
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15.228081 |