Feedback in VV 114: The Nearest Lyman Break Galaxy Analog

Physics

Scientific paper

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Chandra Proposal Id #07610848

Scientific paper

Feedback of energy and metals through supernova driven galactic winds is believed to have played a crucial role in the evolution of galaxies and the intergalactic medium, especially at high redshift. Observations of blueshifted interstellar absorption lines show that such winds were ubiquitous in the Lyman Break Galaxy (LBG) population, but these data probe only the cool phase of the wind. Soft X-ray observations of the hot phase are essential for understanding the wind's dynamics, energetics, and metal content. It is not possible to study this hot gas in LBGs due to their faintness. We propose to obtain high-quality Chandra ACIS-S observations of VV 114, the nearest example of the class of low-redshift LBG analogs recently discovered by GALEX.

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