The Wyoming Fundamental Plane Survey: Spectroscopic Data

Details The Wyoming Fundamental Plane Survey: Spectroscopic Data The Wyoming Fundamental Plane Survey: Spectroscopic Data

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...207.8023p&link_type=abstract

American Astronomical Society Meeting 207, #80.23; Bulletin of the American Astronomical Society, Vol. 37, p.1300

Astronomy and Astrophysics

Astronomy

Scientific paper

We present spectroscopic data from an extensive survey of early type galaxies within nearby Abell clusters. The survey includes clusters with richness class R ≥ 1, and redshift z < 0.05. The spectra of ˜ 2500 galaxies were acquired by the multi-fiber spectrograph (Hydra) on the WIYN 3.5m telescope at a dispersion of 0.48 Å/pixel. Typical signal-to-noise ratios range from ˜ 100/pixel for the brighter galaxies to ˜ 30/pixel for the fainter galaxies. This enables us to measure reliable velocity dispersions for galaxies with log(σ ) ≥ 1.8. We describe the sample, the data quality and present measurements of several spectral indices. We discuss possible cluster-to-cluster variations and observational correlations of these line indices. We also present photometric data for a subset of template clusters. We find complex structure within the fundamental plane (FP) of elliptical galaxies and discuss possible scenarios for its origin.

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