Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...20919905b&link_type=abstract
2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #199.05; Bulletin of the American Astronomical Society,
Astronomy and Astrophysics
Astronomy
Scientific paper
We present several velocity dispersions and Lick line index measurements for a large sample of early type galaxies within several nearby Abell clusters. The data is a result of the Wyoming Fundamental Plane survey (WyFPS) which contains 1,500 galaxies within 32 Abell clusters for an average of 45 galaxies per cluster are included in the WyFPS. The WyFPS includes all Abell clusters that satisfy the following selection criteria: richness class R ≥ 1, and redshift z < 0.05. All spectra were acquired by the multi-fiber spectrograph (Hydra) on the WIYN 3.5m telescope, and were obtained at a dispersion of 0.48 Å/pixel with typical signal-to-noise ratios ranging from 100/pixel for the brighter galaxies to 30/pixel for the fainter galaxies. We report the Hβ, Mg2, Fe5270, and Fe5335 Lick indices for each of the galaxies in the survey, and use these measurements to investigate possible cluster-to-cluster variations and trends with galaxy velocity dispersion.
Berrington Robert Charles
Monson Andy
Pierce Marlon
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