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arXiv · astro-ph/9910163

New Clues on the Nature of Extremely Red Galaxies

A. Cimatti·E. Daddi·S. di Serego Alighieri·L. Pozzetti·F. Mannucci·A. Renzini·E. Oliva·G. Zamorani·P. Andreani·H. J. A. Röttgering
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Abstract

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 0.8 0.8. We discuss the general implications of our findings in relation with the problem of the formation of early type galaxies.

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A. Cimatti, E. Daddi, S. di Serego Alighieri, L. Pozzetti, F. Mannucci, A. Renzini, E. Oliva, G. Zamorani, P. Andreani, H. J. A. Röttgering. 1999-10-08. New Clues on the Nature of Extremely Red Galaxies. https://arxiv.org/abs/astro-ph/9910163

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