Metallicity Distributions of Globular Clusters in Elliptical Galaxies from NICMOS and WFPC2 Observations

Details Metallicity Distributions of Globular Clusters in Elliptical Galaxies from NICMOS and WFPC2 Observations Metallicity Distributions of Globular Clusters in Elliptical Galaxies from NICMOS and WFPC2 Observations

May 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...194.5310a&link_type=abstract

American Astronomical Society, 194th AAS Meeting, #53.10; Bulletin of the American Astronomical Society, Vol. 31, p.906

Astronomy and Astrophysics

Astronomy

Scientific paper

We present Hubble Space Telescope observations of four elliptical galaxies out to the distance of the Coma cluster. We recently acquired four single orbit pointings of each of the four galaxies using the F160W filter with NICMOS to cover most of the Planetary Camera field of archival WFPC2 V-band images of the same galaxies. The V-H color index yields sensitive metallicity distributions of the globular clusters systems (GCSs), and it is about three times as sensitive as the V-I color index with a low sensitivity to age variations. We expect the precision of these metallicities to be as good as 0.2 dex. In addition to the GCS metallicity distributions, the H-band observations of the two ellipticals in Coma provide sufficient signal-to-noise to provide good measurements of their H-band surface brightness fluctuation (SBF) amplitudes. We present a preliminary distance to the Coma cluster from the H-band SBF measurements of the two galaxies and briefly discuss its implications on the Hubble constant.

Affiliated with

Also associated with

No associations

Rating

Metallicity Distributions of Globular Clusters in Elliptical Galaxies from NICMOS and WFPC2 Observations does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Metallicity Distributions of Globular Clusters in Elliptical Galaxies from NICMOS and WFPC2 Observations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Metallicity Distributions of Globular Clusters in Elliptical Galaxies from NICMOS and WFPC2 Observations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1120688