HST NICMOS Observations of Infrared Luminous Galaxy Mergers

Details HST NICMOS Observations of Infrared Luminous Galaxy Mergers HST NICMOS Observations of Infrared Luminous Galaxy Mergers

May 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...198.3411e&link_type=abstract

American Astronomical Society, 198th AAS Meeting, #34.11; Bulletin of the American Astronomical Society, Vol. 33, p.831

Astronomy and Astrophysics

Astronomy

Scientific paper

HST NICMOS observations of a sample of 24 luminous (LIGs: LIR [8-1000 um] = 1011.0-11.99 Lsun) and ultraluminous (ULIGs: LIR > 1012.0 Lsun) infrared galaxies are presented. These observations provide high resolution (0.1-02") HST imaging of the imbedded 1.1 - 2.2 um nuclear regions of these mergers, thus yielding detailed information about the morphology, color, and distribution of imbedded nuclear structures. These data are discussed in the context of recent mid-infrared imaging and radio/millimeter-wave interferometry of a subset of these galaxies, which indicate that a significant fraction of ULIGs may generate most of their energy within a region 50-200 pc across.

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