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Dynamical Mass Estimates for Two Luminous Star Clusters in Galactic Merger Remnants
N. Bastian, R. P. Saglia, P. Goudfrooij +4
We present high-dispersion spectra of two extremely massive star clusters in galactic merger remnants. One cluster, W30, is located in the ~500 Myr old merger remnant NGC 7252 and…
Chemical enrichment of the complex hot ISM of the Antennae Galaxies: II. Physical properties of the hot gas and supernova feedback
A. Baldi, J. C. Raymond, G. Fabbiano +5
We investigate the physical properties of the interstellar medium (ISM) in the merging pair of galaxies known as The Antennae (NGC 4038/39), using the deep coadded ~411 ks Chandra…
Luminosity and mass limits for the progenitor of the type Ic supernova 2004gt in NGC 4038
Justyn R. Maund, Stephen Smartt, Francois Schweizer
We report our attempts to locate the progenitor of the type Ic SN 2004gt in NGC 4038. We use high resolution HST ACS images of SN 2004gt and have compared them with deep pre-explos…
STIS Spectroscopy of Young Star Clusters in "The Antennae" Galaxies (NGC 4038/4039)
Bradley C. Whitmore, Diane Gilmore, C. Leitherer +6
Long-slit spectra of several dozen young star clusters have been obtained at three positions in the Antennae galaxies with the Space Telescope Imaging Spectrograph (STIS) and its 5…
Merger-Induced Starbursts
Francois Schweizer
Extragalactic starbursts induced by gravitational interactions can now be studied from z = ~0 to ~2. The evidence that mergers of gas-rich galaxies tend to trigger galaxy-wide star…