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Article: SiO maser survey of cold IRAS sources
Title | SiO maser survey of cold IRAS sources |
---|---|
Authors | |
Keywords | Galaxy: Kinematics And Dynamics Masers Stars: Agb And Post-Agb Stars: Late-Type |
Issue Date | 2003 |
Publisher | Nihon 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? |
Abstract | We 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 Identifier | http://hdl.handle.net/10722/174840 |
ISSN | 2023 Impact Factor: 2.2 2023 SCImago Journal Rankings: 0.860 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Nakashima, JI | en_US |
dc.contributor.author | Deguchi, S | en_US |
dc.date.accessioned | 2012-11-26T08:47:45Z | - |
dc.date.available | 2012-11-26T08:47:45Z | - |
dc.date.issued | 2003 | en_US |
dc.identifier.citation | Publications Of The Astronomical Society Of Japan, 2003, v. 55 n. 1, p. 229-246 | en_US |
dc.identifier.issn | 0004-6264 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/174840 | - |
dc.description.abstract | We 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.language | eng | en_US |
dc.publisher | Nihon Tenmon Gakkai. The Journal's web site is located at http://www.asj.or.jp/pasj/ | en_US |
dc.relation.ispartof | Publications of the Astronomical Society of Japan | en_US |
dc.subject | Galaxy: Kinematics And Dynamics | en_US |
dc.subject | Masers | en_US |
dc.subject | Stars: Agb And Post-Agb | en_US |
dc.subject | Stars: Late-Type | en_US |
dc.title | SiO maser survey of cold IRAS sources | en_US |
dc.type | Article | en_US |
dc.identifier.email | Nakashima, JI: junichi@hku.hk | en_US |
dc.identifier.authority | Nakashima, JI=rp00764 | en_US |
dc.description.nature | link_to_subscribed_fulltext | en_US |
dc.identifier.scopus | eid_2-s2.0-0037959945 | en_US |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-0037959945&selection=ref&src=s&origin=recordpage | en_US |
dc.identifier.volume | 55 | en_US |
dc.identifier.issue | 1 | en_US |
dc.identifier.spage | 229 | en_US |
dc.identifier.epage | 246 | en_US |
dc.identifier.isi | WOS:000181441500017 | - |
dc.publisher.place | Japan | en_US |
dc.identifier.scopusauthorid | Nakashima, JI=35485342300 | en_US |
dc.identifier.scopusauthorid | Deguchi, S=7006314159 | en_US |
dc.identifier.issnl | 0004-6264 | - |