Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aas...203.9605r&link_type=abstract
American Astronomical Society Meeting 203, #96.05; Bulletin of the American Astronomical Society, Vol. 35, p.1364
Astronomy and Astrophysics
Astronomy
Scientific paper
It has long been known that elliptical galaxies show a correlation between far ultraviolet flux and metallicity as inferred from measurement of the Mg line strength. It is believed that the far ultraviolet flux in these old galaxies may arise from evolved stars present in the old stellar population. Using the sample of Galex detections from the SDSS DR1 spectroscopic sample, we show the correlation of the FUV - r color with the SDSS measurement of Mg strength and we compare this relationship with earlier studies based on data from the International Ultraviolet Explorer satellite. We also place constraints on the presence of residual star formation in local old elliptical galaxies. The results presented here will be based on a small portion of the eventual Galex dataset.
GALEX (Galaxy Evolution Explorer) is a NASA Small Explorer, launched in April 2003. We gratefully acknowledge NASA's support for construction, operation, and science analysis for the GALEX mission.
Charlot Stephane
GALEX Science Team
Kauffmann Guinevere
Lee Young-Wook
Rich Robert Michael
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