Hostname: page-component-7c8c6479df-hgkh8 Total loading time: 0 Render date: 2024-03-28T11:55:54.129Z Has data issue: false hasContentIssue false

Extremely Red Galaxies in Abell 1835

Published online by Cambridge University Press:  01 August 2006

A. Hempel
Affiliation:
Geneva Observatory, Ch. des Maillettes 51, CH-1290 Sauverny, Switzerland email:Angela.Hempel@obs.unige.ch
D. Schaerer
Affiliation:
Geneva Observatory, Ch. des Maillettes 51, CH-1290 Sauverny, Switzerland email:Angela.Hempel@obs.unige.ch Observatoire Midi-Pyréneés, 14 Avenue E. Belin, F-31400 Toulouse, France
J. Richard
Affiliation:
Caltech Astronomy, MC105-24, Pasadena, CA 91125, USA
E. Egami
Affiliation:
Steward Observatory, University Arizona, AZ 85721, USA
R. Pelló
Affiliation:
Observatoire Midi-Pyréneés, 14 Avenue E. Belin, F-31400 Toulouse, France
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We use multi-colour data of the gravitational lensing cluster Abell 1835 to search for high-z candidates (Richard et al. 2006) and extremely red galaxies.

Applying a colour criteria of R-K ≥ 5.6 we have selected 12 EROs, of which 10(9) have no R(I)-band detection. Two of these sources posses multiple detections in the ACS z850 band, possibly gravitationally bound objects.

Using the method of Pozzetti and Mannucci (2000) to classify an ERO either as evolved elliptical or dusty starburst, we find that two thirds of all objects have colours assigned to evolved ellipticals. One of the remaining 4 sources is the known sub-mm source SMMJ14009+0252.

The spectral energy distributions of sources with no optical detection show strong similarities to the SED of the high-z object of Mobasher et al. (2005), i.e. a degeneracy between a low- and high-z solution. However, for objects we accept the low-z solution as the better fit.

A detailed analyses of the colour properties and spectral energy distribution will be published in two forthcoming papers (Schaerer et al., Hempel et al.).

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2007

References

Mobasher, 2005, ApJ 635, 832.Google Scholar
Pozzetti, & Mannucci, 2000, MNRAS 317, L17.CrossRefGoogle Scholar
Richard, 2006, A&A 456, 861.Google Scholar