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Article: Detections of SiO and H2O masers in the bipolar nebula IRAS 19312+1950
Title | Detections of SiO and H2O masers in the bipolar nebula IRAS 19312+1950 |
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Authors | |
Keywords | Ism: Molecules Masers Planetary Nebulae: Individual (Iras 19312+1950 Stars: Agb And Post-Agb Stars: Mass-Loss |
Issue Date | 2000 |
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, 2000, v. 52 n. 5, p. L43-L46 How to Cite? |
Abstract | We report on the detection of SiO and H2O masers toward a newly found bipolar nebula, IRAS 19312+1950. This object exhibits extreme red IRAS color [ log(F25/F12) = 0.5 and log(F60/F25) = 0.7 ] and a nebulosity having a size of about 30″ extended to the south-west in the 2MASS near-infrared image. Toward this object, we have detected emission from the H2O 6(1,6)-5(2,3) transition, the SiO J = 1-0, v = 1 and 2, and J = 2-1, v = 1 transitions, and the SO 2(2)-1(1) and H13CN J = 1-0 transitions. The thermal lines of SO and H13CN are shifted by about 12 km s-1 in radial velocity with respect to the maser lines, indicating that thermal emission comes from the background molecular cloud. However, the SiO J - 2-1, v = 2 spectrum shows another component of SiO emission separated by 26 km s-1 from the main component, that might be formed in a rotating or expanding shell. |
Persistent Identifier | http://hdl.handle.net/10722/174796 |
ISSN | 2023 Impact Factor: 2.2 2023 SCImago Journal Rankings: 0.860 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
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dc.contributor.author | Nakashima, JI | en_US |
dc.contributor.author | Deguchi, S | en_US |
dc.date.accessioned | 2012-11-26T08:47:29Z | - |
dc.date.available | 2012-11-26T08:47:29Z | - |
dc.date.issued | 2000 | en_US |
dc.identifier.citation | Publications Of The Astronomical Society Of Japan, 2000, v. 52 n. 5, p. L43-L46 | en_US |
dc.identifier.issn | 0004-6264 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/174796 | - |
dc.description.abstract | We report on the detection of SiO and H2O masers toward a newly found bipolar nebula, IRAS 19312+1950. This object exhibits extreme red IRAS color [ log(F25/F12) = 0.5 and log(F60/F25) = 0.7 ] and a nebulosity having a size of about 30″ extended to the south-west in the 2MASS near-infrared image. Toward this object, we have detected emission from the H2O 6(1,6)-5(2,3) transition, the SiO J = 1-0, v = 1 and 2, and J = 2-1, v = 1 transitions, and the SO 2(2)-1(1) and H13CN J = 1-0 transitions. The thermal lines of SO and H13CN are shifted by about 12 km s-1 in radial velocity with respect to the maser lines, indicating that thermal emission comes from the background molecular cloud. However, the SiO J - 2-1, v = 2 spectrum shows another component of SiO emission separated by 26 km s-1 from the main component, that might be formed in a rotating or expanding shell. | 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 | Ism: Molecules | en_US |
dc.subject | Masers | en_US |
dc.subject | Planetary Nebulae: Individual (Iras 19312+1950 | en_US |
dc.subject | Stars: Agb And Post-Agb | en_US |
dc.subject | Stars: Mass-Loss | en_US |
dc.title | Detections of SiO and H2O masers in the bipolar nebula IRAS 19312+1950 | 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-s2.0-0034358453 | en_US |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-0034358453&selection=ref&src=s&origin=recordpage | en_US |
dc.identifier.volume | 52 | en_US |
dc.identifier.issue | 5 | en_US |
dc.identifier.spage | L43 | en_US |
dc.identifier.epage | L46 | en_US |
dc.identifier.isi | WOS:000165119900003 | - |
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 | - |