2013ApJ...768...75R


Query : 2013ApJ...768...75R

2013ApJ...768...75R - Astrophys. J., 768, 75 (2013/May-1)

The multiphase structure and power sources of galactic winds in major mergers.

RUPKE D.S.N. and VEILLEUX S.

Abstract (from CDS):

Massive, galaxy-scale outflows are known to be ubiquitous in major mergers of disk galaxies in the local universe. In this paper, we explore the multiphase structure and power sources of galactic winds in six ultraluminous infrared galaxies (ULIRGs) at z < 0.06 using deep integral field spectroscopy with the Gemini Multi-Object Spectrograph (GMOS) on Gemini North. We probe the neutral, ionized, and dusty gas phases using Na I D, strong emission lines ([O I], Hα, and [N II]), and continuum colors, respectively. We separate outflow motions from those due to rotation and tidal perturbations, and find that all of the galaxies in our sample host high-velocity flows on kiloparsec scales. The properties of these outflows are consistent with multiphase (ionized, neutral, and dusty) collimated bipolar winds emerging along the minor axis of the nuclear disk to scales of 1-2 kpc. In two cases, these collimated winds take the form of bipolar superbubbles, identified by clear kinematic signatures. Less collimated (but still high-velocity) flows are also present on scales up to 5 kpc in most systems. The three galaxies in our sample with obscured QSOs host higher velocity outflows than those in the three galaxies with no evidence for an active galactic nucleus. The peak outflow velocity in each of the QSOs is in the range 1450-3350 km/s, and the highest velocities (2000-3000 km/s) are seen only in ionized gas. The outflow energy and momentum in the QSOs are difficult to produce from a starburst alone, but are consistent with the QSO contributing significantly to the driving of the flow. Finally, when all gas phases are accounted for, the outflows are massive enough to provide negative feedback to star formation.

Abstract Copyright:

Journal keyword(s): galaxies: evolution - galaxies: interactions - galaxies: ISM - galaxies: kinematics and dynamics - ISM: jets and outflows - quasars: general

Simbad objects: 12

goto Full paper

goto View the references in ADS

Number of rows : 12
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 NAME IRAS F08572+3915 NW LIN 09 00 25.364 +39 03 54.23     16.66     ~ 372 1
2 M 82 IG 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 5470 6
3 NGC 3079 Sy2 10 01 57.80342 +55 40 47.2428 11.57 11.54 10.86     ~ 1292 3
4 2XMM J105918.1+243234 LIN 10 59 18.128 +24 32 34.74   15.7       ~ 244 1
5 NGC 4388 Sy2 12 25 46.820 +12 39 43.45 11.91 11.76 11.02     ~ 1229 2
6 Mrk 231 Sy1 12 56 14.2340989340 +56 52 25.238555193   14.68 13.84     ~ 1843 3
7 Mrk 273 Sy2 13 44 42.164 +55 53 13.53   15.68 14.91     ~ 843 3
8 NAME IRAS F15163+4255 NW LIN 15 18 06.138 +42 44 45.03   15.0 15     ~ 190 1
9 IC 4553 SyG 15 34 57.22396 +23 30 11.6084   14.76 13.88     ~ 2758 4
10 NGC 6240 Sy2 16 52 58.861 +02 24 03.55   14.31 13.37     ~ 1525 2
11 6dFGS gJ172322.0-001701 LIN 17 23 21.943 -00 17 00.96   15.1       ~ 381 0
12 [CGM90] IRAS 08572+3915 SE GiP ~ ~           ~ 10 0

To bookmark this query, right click on this link: simbad:objects in 2013ApJ...768...75R and select 'bookmark this link' or equivalent in the popup menu


2021.08.02-13:22:09

© Université de Strasbourg/CNRS

    • Contact