2000/10/04 by M. Stiavelli, Tommaso Treu, T. Treu +2
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics (astro-ph) #Astrophysics and Star Formation Studies #FOS: Physical sciences #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/0010100
4 pages, 1 Postscript figure. To appear in the proceedings of the conference "Galaxy Disks and Disk Galaxies", ASP conference series, Funes and Corsini eds
arxiv created 2000/10/04 · openalex publication_date 2000/10/04 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We briefly discuss our survey of Extremely Red Objects (EROs) with HST/NICMOS and deep ground-based images and summarize its results. We use the high-resolution NICMOS images to sub-divide EROs into morphological classes, tentatively arguing that about 60 % of EROs (18 out of 30) are early-type galaxies. About 20 % (6 out of 30 objects) appear to be flattened disk systems. Another 10 % (3 out of 30) have an irregular morphology. Thus, combining disk and irregular systems, our data are compatible with 30 % of EROs being dusty starbursts. A small fraction (3 out of 30) appear point-like even on the HST images and could therefore be either compact high redshift galaxies or stars in the Milky Way halo.