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Conference Paper: Star formation timescale in the circumnuclear starburst ring of barred galaxy NGC 7552

TitleStar formation timescale in the circumnuclear starburst ring of barred galaxy NGC 7552
Authors
Issue Date2012
PublisherInstitute 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?
AbstractWe 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 Identifierhttp://hdl.handle.net/10722/176222
ISSN
2015 SCImago Journal Rankings: 0.211
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorPan, HAen_US
dc.contributor.authorLim, Jen_US
dc.contributor.authorMatsushita, Sen_US
dc.contributor.authorWong, Ten_US
dc.date.accessioned2012-11-26T09:06:58Z-
dc.date.available2012-11-26T09:06:58Z-
dc.date.issued2012en_US
dc.identifier.citationJournal Of Physics: Conference Series, 2012, v. 372en_US
dc.identifier.issn1742-6588en_US
dc.identifier.urihttp://hdl.handle.net/10722/176222-
dc.description.abstractWe 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.languageengen_US
dc.publisherInstitute of Physics Publishing. The Journal's web site is located at http://www.iop.org/EJ/journal/confen_US
dc.relation.ispartofJournal of Physics: Conference Seriesen_US
dc.titleStar formation timescale in the circumnuclear starburst ring of barred galaxy NGC 7552en_US
dc.typeConference_Paperen_US
dc.identifier.emailLim, J: jjlim@hku.hken_US
dc.identifier.authorityLim, J=rp00745en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1088/1742-6596/372/1/012066en_US
dc.identifier.scopuseid_2-s2.0-84865624039en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-84865624039&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume372en_US
dc.identifier.isiWOS:000307718600066-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridPan, HA=55349125300en_US
dc.identifier.scopusauthoridLim, J=7403453870en_US
dc.identifier.scopusauthoridMatsushita, S=55183546300en_US
dc.identifier.scopusauthoridWong, T=55348882800en_US

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