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Conference Paper: HCN(1-0) maser emission by IR pumping from unresolved AGN disk/torus toward the Seyfert 2 nucleus of M51?
| Title | HCN(1-0) maser emission by IR pumping from unresolved AGN disk/torus toward the Seyfert 2 nucleus of M51? |
|---|---|
| Authors | |
| Issue Date | 2015 |
| Publisher | Astronomical Society of the Pacific. |
| Citation | The 2014 Tokyo International Forum on Revolution in Astronomy with ALMA: The Third Year, Tokyo, Japan, 8–11 December 2014. In ASP Conference Series, 2015, v. 499, p. 153 How to Cite? |
| Abstract | We present ˜1'' (˜34 pc) resolution observations of HCN(1-0) together with CO J=1-0, 2-1, and 3-2 toward the Seyfert 2 nucleus of M51 using IRAM PdBI and SMA. HCN shows a strong emission at the nucleus only at the systemic velocity, where no obvious CO emission. HCN(1-0)/CO(1-0) >2 at this region. Based on our radiative transfer calculations, we suggest that this strong HCN emission is affected by the IR pumping and possibly weak HCN masing. This suggests the presence of an edge-on rotating circumnuclear dense molecular gas disk or torus, which remains unresolved at our resolution. |
| Description | v.499 of this Conference Series entitled: Revolution in Astronomy with ALMA: The Third Year |
| Persistent Identifier | http://hdl.handle.net/10722/232748 |
| ISBN |
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Matsushita, S | - |
| dc.contributor.author | Dinh, VT | - |
| dc.contributor.author | Boone, F | - |
| dc.contributor.author | Krips, M | - |
| dc.contributor.author | Lim, JJL | - |
| dc.contributor.author | Muller, S | - |
| dc.date.accessioned | 2016-09-20T05:32:02Z | - |
| dc.date.available | 2016-09-20T05:32:02Z | - |
| dc.date.issued | 2015 | - |
| dc.identifier.citation | The 2014 Tokyo International Forum on Revolution in Astronomy with ALMA: The Third Year, Tokyo, Japan, 8–11 December 2014. In ASP Conference Series, 2015, v. 499, p. 153 | - |
| dc.identifier.isbn | 9781583818824 | - |
| dc.identifier.uri | http://hdl.handle.net/10722/232748 | - |
| dc.description | v.499 of this Conference Series entitled: Revolution in Astronomy with ALMA: The Third Year | - |
| dc.description.abstract | We present ˜1'' (˜34 pc) resolution observations of HCN(1-0) together with CO J=1-0, 2-1, and 3-2 toward the Seyfert 2 nucleus of M51 using IRAM PdBI and SMA. HCN shows a strong emission at the nucleus only at the systemic velocity, where no obvious CO emission. HCN(1-0)/CO(1-0) >2 at this region. Based on our radiative transfer calculations, we suggest that this strong HCN emission is affected by the IR pumping and possibly weak HCN masing. This suggests the presence of an edge-on rotating circumnuclear dense molecular gas disk or torus, which remains unresolved at our resolution. | - |
| dc.language | eng | - |
| dc.publisher | Astronomical Society of the Pacific. | - |
| dc.relation.ispartof | ASP Conference Series | - |
| dc.title | HCN(1-0) maser emission by IR pumping from unresolved AGN disk/torus toward the Seyfert 2 nucleus of M51? | - |
| dc.type | Conference_Paper | - |
| dc.identifier.email | Lim, JJL: jjlim@hku.hk | - |
| dc.identifier.authority | Lim, JJL=rp00745 | - |
| dc.identifier.hkuros | 263787 | - |
| dc.identifier.volume | 499 | - |
| dc.identifier.spage | 153 | - |
| dc.identifier.epage | 153 | - |
| dc.publisher.place | United States | - |