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Extreme Galactic-Winds and Starburst in IR Mergers and IR QSOs | | S. Lipari
; D. Sanders
; R. Terlevich
; S. Veilleux
; R. Diaz
; Y. Taniguchi
; W. Zheng
; D. Kim
; Z. Tsvetanov
; G. Carranza
; H. Dottori
; | | Date: |
21 Jul 2000 | | Journal: | Mon.Not.Roy.Astron.Soc. 340 (2003) 289 | | Subject: | astro-ph | | Affiliation: | Cordoba Observatory and CONICET, Argentina), D. Sanders (Institute for Astronomy, Univ.Hawaii), R. Terlevich (Institute of Astronomy, UK), S. Veilleux (Univ.Maryland), R. Diaz (Cordoba Observatory), Y. Taniguchi (Astronomical Institute, Tohoku Univ., J | | Abstract: | We report -as a part of a long-term study of mergers and IR QSOs- detailed spectroscopic evidences for outflow (OF) and/or Wolf Rayet features in: (i) low velocity OF in the ongoing mergers NGC 4038/39 and IRAS 23128-5919; (ii) extreme velocity OF (EVOF) in the QSOs IRAS 01003-2238 and IRAS 13218+0552; (iii) OF and EVOF in a complete sample of ultra-luminous IR galaxies/QSOs ("The IRAS 1 Jy MKO-KPNO Survey", of 118 objects). We found EVOF in IRAS 11119+3257, 14394+5332, 15130+1958 and 15462-0450. The OF components detected in these objects were mainly associated to starburst processes: i.e., to galactic-winds generated in multiple type II SN explosions and massive stars. The EVOF were detected in objects with strong starburst plus obscured IR QSOs; which suggest that interaction of both processes could generate EVOF. In addition, we analyze the presence of Wolf Rayet features in the large sample of Bright PG-QSOs (Boroson and Green 1992), and nearby mergers and galactic-wind galaxies. We found clear WR features in the Fe II QSOs (type I): PG 1244+026, 1444+407, 1448+273, 1535+547; and in the IR merger Arp 220. HST archive images of IR+BAL QSOs show in practically all of these objects "arc or shell" features probably associated to galactic-winds (i.e., to multiple type II SN explosions) and/or merger processes. Finally, we discuss the presence of extreme starburst and galactic wind as a possible evolutive link between IR merger and IR QSOs; where the relation between mergers and extreme starburst (with powerful galactic-winds) plays in important role, in the evolution of galaxies. | | Source: | arXiv, astro-ph/0007316 | | Services: | Forum | Review | PDF | Favorites | |
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