P CYGNI PROFILES OF MOLECULAR LINES TOWARD ARP 220 NUCLEI

被引：74

作者：

Sakamoto, Kazushi ^{[1
]}

Aalto, Susanne ^{[2
]}

Wilner, David J. ^{[3
]}

Black, John H. ^{[2
]}

Conway, John E. ^{[2
]}

Costagliola, Francesco ^{[2
]}

Peck, Alison B. ^{[4
]}

Spaans, Marco ^{[5
]}

Wang, Junzhi ^{[6
]}

Wiedner, Martina C. ^{[7
]}

机构：

[1] Acad Sinica, Inst Astron & Astrophys, Taipei 10617, Taiwan

[2] Chalmers, Onsala Space Observ, Dept Radio & Space Sci, SE-43992 Onsala, Sweden

[3] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA

[4] Joint ALMA Observ, Santiago 7550108, Chile

[5] Univ Groningen, Kapteyn Astron Inst, NL-9700 AV Groningen, Netherlands

[6] Nanjing Univ, Dept Astron, Nanjing 210093, Peoples R China

[7] Observ Paris, F-75014 Paris, France

来源：

ASTROPHYSICAL JOURNAL LETTERS | 2009年 / 700卷 / 02期

关键词：

galaxies: active; galaxies: evolution; galaxies: individual (Arp 220); SUBMILLIMETER ARRAY; INFRARED GALAXIES; ARP-220; EMISSION; DIAGNOSTICS; STARBURSTS; LUMINOSITY; SUPERNOVAE; CONTINUUM; OUTFLOWS;

D O I：

10.1088/0004-637X/700/2/L104

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report similar to 100 pc (0 ''.3) resolution observations of (sub) millimeter HCO(+) and CO lines in the ultraluminous infrared galaxy Arp 220. The lines peak at two merger nuclei, with HCO(+) being more spatially concentrated than CO. Asymmetric line profiles with blueshifted absorption and redshifted emission are discovered in HCO(+)(3-2) and (4-3) toward the two nuclei and in CO(3-2) toward one nucleus. We suggest that these P Cygni profiles are due to similar to 100 km s(-1) outward motion of molecular gas from the nuclei. This gas is most likely outflowing from the inner regions of the two nuclear disks rotating around individual nuclei, clearing the shroud around the luminosity sources there.

引用

页码：L104 / L108

页数：5

共 28 条

[1] High-resolution HNC 3-2 SMA observations of Arp 220 [J].