The Hidden Mass and Large Spatial Extent of a Poststarburst Galaxy Outflow

Details The Hidden Mass and Large Spatial Extent of a Poststarburst Galaxy Outflow The Hidden Mass and Large Spatial Extent of a Poststarburst Galaxy Outflow

2011-11-16

arxiv.org/abs/1111.3982v1

Science, v.334, pg.952 (2011)

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

This paper is part of a set of three papers on circumgalactic gas observed with the Cosmic Origins Spectrograph on HST, to be

Scientific paper

Outflowing winds of multiphase plasma have been proposed to regulate the buildup of galaxies, but key aspects of these outflows have not been probed with observations. Using ultraviolet absorption spectroscopy, we show that "warm-hot" plasma at 10^{5.5} K contains 10-150 times more mass than the cold gas in a poststarburst galaxy wind. This wind extends to distances >68 kiloparsecs, and at least some portion of it will escape. Moreover, the kinematical correlation of the cold and warm-hot phases indicates that the warm-hot plasma is related to the interaction of the cold matter with a hotter (unseen) phase at >>10^{6} K. Such multiphase winds can remove substantial masses and alter the evolution of poststarburst galaxies.

Affiliated with

Also associated with

No associations

Rating

The Hidden Mass and Large Spatial Extent of a Poststarburst Galaxy Outflow does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The Hidden Mass and Large Spatial Extent of a Poststarburst Galaxy Outflow, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Hidden Mass and Large Spatial Extent of a Poststarburst Galaxy Outflow will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-348986