Infrared Luminous Stars & Stellar Population in Nearby Giant Elliptical Galaxies

Details Infrared Luminous Stars & Stellar Population in Nearby Giant Elliptical Galaxies Infrared Luminous Stars & Stellar Population in Nearby Giant Elliptical Galaxies

Dec 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997hst..prop.7877g&link_type=abstract

HST Proposal ID #7877

Physics

Hst Proposal Id #7877 Galaxies

Scientific paper

This program is to obtain parallel NIC2/F160W and NIC1/F110W images of NGC 5128 and hence resolve the stellar population of early-type galaxies in the infrared for the first time. These data, in combination with existing WFPC2 F814W and F555W observations of NGC 5128, will yield the first infrared luminosity functions for the stellar populations of giant ellipticals as well as unique optical/infrared color-magnitude diagrams for individually resolved stars. From these data we will: {1} measure the spread in ages and metallicities; {2} detect stars above the tip of the red giant branch, and {3} provide a sensitive search for an intermediate-age populations; {4} determine the dominant contribution to surface brightness fluctuations at infrared wavelengths in a giant elliptical galaxy.

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