New Clues on the Nature of Extremely Red Galaxies

Details New Clues on the Nature of Extremely Red Galaxies New Clues on the Nature of Extremely Red Galaxies

1999-10-08

arxiv.org/abs/astro-ph/9910163v1

Astronomy and Astrophysics

Astrophysics

6 pages, 2 figures. Astronomy & Astrophysics (Letters), in press

Scientific paper

We present near-infrared VLT-UT1+ISAAC spectroscopy of a sample of 9 extremely red galaxies (ERGs) with R-K>5 and K<19.0. Neither strong emission lines (F_lim<1-5 10^{-16} erg s^{-1}cm^{-2}) nor continuum breaks are detected. From near-infrared spectrophotometry, complemented with broad-band optical and near-IR photometry, we estimate ``spectro-photometric'' redshifts to be in the range of 0.80.8. We discuss the general implications of our findings in relation with the problem of the formation of early type galaxies.

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