19 papers · 1 filter
HST's view of the youngest massive stars in the Magellanic Clouds
M. Heydari-Malayeri, M. R. Rosa, V. Charmandaris +5
Accurate physical parameters of newborn massive stars are essential ingredients to shed light on their formation, which is still an unsolved problem. The rare class of compact H II…
Fire and Ice: IRS Mid-IR Spectroscopy of IRAS F00183--7111
H. W. W. Spoon, L. Armus, J. Cami +8
We report the detection of strong absorption and weak emission features in the 4--27 micron Spitzer-IRS spectrum of the distant ultraluminous infrared galaxy (ULIRG) IRAS F00183--7…
Molecular Gas in Tidal Dwarf Galaxies: On-going Galaxy Formation
J. Braine, P. -A. Duc, U. Lisenfeld +3
We investigate the process of galaxy formation as can be observed in the only currently forming galaxies -- the so-called Tidal Dwarf Galaxies, hereafter TDGs -- through observatio…
Molecular gas in the intergalactic medium of Stephan's Quintet
Ute Lisenfeld, Stephane Leon, Jonathan Braine +3
Stephan's Quintet (SQ) is a Hickson Compact Group well known for its complex dynamical and star formation history and its rich intergalactic medium (IGM). In order to study the ext…
The youngest massive star clusters in the Magellanic Clouds
M. Heydari-Malayeri, V. Charmandaris, L. Deharveng +3
High resolution observations with HST have recently allowed us to resolve and study several very tight clusters of newly born massive stars in the Magellanic Clouds. Situated in an…
Spatial resolution bias in the mid-infrared Starburst/AGN classification
O. Laurent, I. F. Mirabel, V. Charmandaris +4
We present the effects of limited spatial resolution to the observed mid-infrared (MIR) spectrum of an active galactic nucleus (AGN) surrounded by a disk with massive star forming…