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Conference Paper: Star formation timescale in the circumnuclear starburst ring of barred galaxy NGC 7552
Title | Star formation timescale in the circumnuclear starburst ring of barred galaxy NGC 7552 |
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Authors | |
Issue Date | 2012 |
Publisher | Institute of Physics Publishing. The Journal's web site is located at http://www.iop.org/EJ/journal/conf |
Citation | Journal Of Physics: Conference Series, 2012, v. 372 How to Cite? |
Abstract | We present the multiple line observations carried out with interferometry. We observed the circumnuclear region of the barred galaxy NGC 7552 in molecular lines tracing diffuse molecular gas ( 12CO J 2 - 1; observed by SMA) and relatively dense molecular gas (HCN J 1 - 0; observed by ATCA). We also reprocessed a published HI image which covers the entire galaxy to gain an analytical image with higher resolution. The displacement between HCN (J 1 - 0) and radio knots (3 cm continuum; ATCA archive data) is clearly seen in the circumnuclear starburst ring of NGC 7552. The propagation time derived from 12CO J 2 - 1 and HI based rotation curve between the HCN (J 1 - 0) and radio knots implies the timescale between the formation and death of massive stars. The timescale of NGC 7552 is about an order of magnitude shorter than 5 - 10 Myr timescale for OB stars to become supernovae. It is possible that star formation in the ring is top heavy, resulting in a shorter timescale. |
Persistent Identifier | http://hdl.handle.net/10722/176222 |
ISSN | 2023 SCImago Journal Rankings: 0.180 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Pan, HA | en_US |
dc.contributor.author | Lim, J | en_US |
dc.contributor.author | Matsushita, S | en_US |
dc.contributor.author | Wong, T | en_US |
dc.date.accessioned | 2012-11-26T09:06:58Z | - |
dc.date.available | 2012-11-26T09:06:58Z | - |
dc.date.issued | 2012 | en_US |
dc.identifier.citation | Journal Of Physics: Conference Series, 2012, v. 372 | en_US |
dc.identifier.issn | 1742-6588 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/176222 | - |
dc.description.abstract | We present the multiple line observations carried out with interferometry. We observed the circumnuclear region of the barred galaxy NGC 7552 in molecular lines tracing diffuse molecular gas ( 12CO J 2 - 1; observed by SMA) and relatively dense molecular gas (HCN J 1 - 0; observed by ATCA). We also reprocessed a published HI image which covers the entire galaxy to gain an analytical image with higher resolution. The displacement between HCN (J 1 - 0) and radio knots (3 cm continuum; ATCA archive data) is clearly seen in the circumnuclear starburst ring of NGC 7552. The propagation time derived from 12CO J 2 - 1 and HI based rotation curve between the HCN (J 1 - 0) and radio knots implies the timescale between the formation and death of massive stars. The timescale of NGC 7552 is about an order of magnitude shorter than 5 - 10 Myr timescale for OB stars to become supernovae. It is possible that star formation in the ring is top heavy, resulting in a shorter timescale. | en_US |
dc.language | eng | en_US |
dc.publisher | Institute of Physics Publishing. The Journal's web site is located at http://www.iop.org/EJ/journal/conf | en_US |
dc.relation.ispartof | Journal of Physics: Conference Series | en_US |
dc.title | Star formation timescale in the circumnuclear starburst ring of barred galaxy NGC 7552 | en_US |
dc.type | Conference_Paper | en_US |
dc.identifier.email | Lim, J: jjlim@hku.hk | en_US |
dc.identifier.authority | Lim, J=rp00745 | en_US |
dc.description.nature | link_to_subscribed_fulltext | en_US |
dc.identifier.doi | 10.1088/1742-6596/372/1/012066 | en_US |
dc.identifier.scopus | eid_2-s2.0-84865624039 | en_US |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-84865624039&selection=ref&src=s&origin=recordpage | en_US |
dc.identifier.volume | 372 | en_US |
dc.identifier.isi | WOS:000307718600066 | - |
dc.publisher.place | United Kingdom | en_US |
dc.identifier.scopusauthorid | Pan, HA=55349125300 | en_US |
dc.identifier.scopusauthorid | Lim, J=7403453870 | en_US |
dc.identifier.scopusauthorid | Matsushita, S=55183546300 | en_US |
dc.identifier.scopusauthorid | Wong, T=55348882800 | en_US |
dc.identifier.issnl | 1742-6588 | - |