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Article: SiO maser survey of cold IRAS sources

TitleSiO maser survey of cold IRAS sources
Authors
KeywordsGalaxy: Kinematics And Dynamics
Masers
Stars: Agb And Post-Agb
Stars: Late-Type
Issue Date2003
PublisherNihon Tenmon Gakkai. The Journal's web site is located at http://www.asj.or.jp/pasj/
Citation
Publications Of The Astronomical Society Of Japan, 2003, v. 55 n. 1, p. 229-246 How to Cite?
AbstractWe present the results of observations of cold IRAS sources in the Galactic disk area, -10° < l < 100° and |b| < 5°, in the SiO J = 1-0, v = 1 and 2 maser lines. SiO masers were detected in 51 out of 143 observed sources; 45 were new detections in SiO masers. The selected IRAS sources were objects with dust temperatures of between 160 and 280 K. According to a confirmation using 2MASS near-infrared images, a majority of the sample are AGB or post-AGB stars, although dense cores in the star-forming regions (or dusty H II regions) are involved in part of the sample. Among new detections, two were candidates for post-AGB stars: IRAS 18450-0148 (W 43A), and 19312+1950. We found that the intensity ratios of the SiO J = 1-0, v = 2 to the v = 1 line of the objects clearly correlate with those IRAS colors. The detection rates of SiO masers tend to increase toward the Galactic center as well as the cases of previous SiO maser surveys of typical AGB stars. No strong associations of the objects to the spiral arms were found. The radial-velocity dispersion of the present sample is comparable with the dispersion of the SiO maser sample of typical AGB stars. These facts suggest that the present sample of cold IRAS sources with SiO masers has a kinematic property very similar to that of typical AGB stars.
Persistent Identifierhttp://hdl.handle.net/10722/174840
ISSN
2015 Impact Factor: 1.961
2015 SCImago Journal Rankings: 0.804
References

 

DC FieldValueLanguage
dc.contributor.authorNakashima, JIen_US
dc.contributor.authorDeguchi, Sen_US
dc.date.accessioned2012-11-26T08:47:45Z-
dc.date.available2012-11-26T08:47:45Z-
dc.date.issued2003en_US
dc.identifier.citationPublications Of The Astronomical Society Of Japan, 2003, v. 55 n. 1, p. 229-246en_US
dc.identifier.issn0004-6264en_US
dc.identifier.urihttp://hdl.handle.net/10722/174840-
dc.description.abstractWe present the results of observations of cold IRAS sources in the Galactic disk area, -10° < l < 100° and |b| < 5°, in the SiO J = 1-0, v = 1 and 2 maser lines. SiO masers were detected in 51 out of 143 observed sources; 45 were new detections in SiO masers. The selected IRAS sources were objects with dust temperatures of between 160 and 280 K. According to a confirmation using 2MASS near-infrared images, a majority of the sample are AGB or post-AGB stars, although dense cores in the star-forming regions (or dusty H II regions) are involved in part of the sample. Among new detections, two were candidates for post-AGB stars: IRAS 18450-0148 (W 43A), and 19312+1950. We found that the intensity ratios of the SiO J = 1-0, v = 2 to the v = 1 line of the objects clearly correlate with those IRAS colors. The detection rates of SiO masers tend to increase toward the Galactic center as well as the cases of previous SiO maser surveys of typical AGB stars. No strong associations of the objects to the spiral arms were found. The radial-velocity dispersion of the present sample is comparable with the dispersion of the SiO maser sample of typical AGB stars. These facts suggest that the present sample of cold IRAS sources with SiO masers has a kinematic property very similar to that of typical AGB stars.en_US
dc.languageengen_US
dc.publisherNihon Tenmon Gakkai. The Journal's web site is located at http://www.asj.or.jp/pasj/en_US
dc.relation.ispartofPublications of the Astronomical Society of Japanen_US
dc.subjectGalaxy: Kinematics And Dynamicsen_US
dc.subjectMasersen_US
dc.subjectStars: Agb And Post-Agben_US
dc.subjectStars: Late-Typeen_US
dc.titleSiO maser survey of cold IRAS sourcesen_US
dc.typeArticleen_US
dc.identifier.emailNakashima, JI: junichi@hku.hken_US
dc.identifier.authorityNakashima, JI=rp00764en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-0037959945en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0037959945&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume55en_US
dc.identifier.issue1en_US
dc.identifier.spage229en_US
dc.identifier.epage246en_US
dc.publisher.placeJapanen_US
dc.identifier.scopusauthoridNakashima, JI=35485342300en_US
dc.identifier.scopusauthoridDeguchi, S=7006314159en_US

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