Gas kinematics in the halo of the warm ULIRG PKS1345+12 |
| |
| Authors: | Javier Rodríguez Zaurín Joanna Holt Clive N Tadhunter Rosa M González Delgado |
| |
| Institution: | 1. Department of Physics and Astronomy, University of Sheffield, Hicks Building, Hounsfield Road, Sheffield, S3 7RH, UK
2. Instituto de Astrofísica de Andalucía (CSIC), P.O. Box 3004, 18080, Granada, Spain
|
| |
| Abstract: | We use long-slit spectra taken with the William Herschel Telescope on La Palma and high-resolution Hubble Space Telescope imaging to study the gas kinematic in the halo of the ultraluminous infrared/radio galaxy PKS1345+12 (z=0.122). Our long-slit spectra show line splitting at the locations of massive star clusters ( $10^{6}<M_{\mathrm{SSC}}^{\mathrm{YSP}}<10^{7}$ M⊙), indicating that they are moving at up to 450 km?s?1 with respect to the local ambient gas. Given their kinematics, it is plausible that these super star clusters have been formed either in fast-moving gas streams or tidal tails that are falling back into the nuclear regions as part of the merger process, or as a consequence of jet-induced star formation linked to the extended, diffuse radio emission detected in the halo of the galaxy. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
