An extremely red r^{1/4} galaxy in the test image of the Hubble Deep Field South

Show simple item record Treu, Tommaso en_US Stiavelli, Massimo en_US Walker, Alistair en_US Williams, Robert en_US Baum, Stefi en_US Bernstein, Gary en_US Blacker, Brett en_US Carollo, C. Marcella en_US Casertano, Stefano en_US Dickinson, Mark en_US Demello, Duilia en_US Ferguson, Henry en_US Fruchter, Andrew en_US Lucas, Ray en_US MacKenty, John en_US Madau, Piero en_US Postman, Marc en_US 2006-05-17T18:13:29Z en_US 2006-05-17T18:13:29Z en_US 1998-12 en_US
dc.identifier.citation Astron.Astrophys. 340 (1998) L10-L14 en_US
dc.identifier.issn 1432-0746 en_US
dc.identifier.uri en_US
dc.description Also archived in: arXiv: astro-ph/9808282 v1 25 Aug 1998 en_US
dc.description.abstract We report the serendipitous discovery of an extremely red object in the Hubble Deep Field South (HDFS) Test NICMOS (Near Infrared Camera and Multi Object Spectrograph) field of view. The object is resolved in the NICMOS image and has a light profile very well described by an r^(1/4) law with effective radius re=0.′′20±0.05 and Hab=21.7±0.1 magnitudes. In contrast, the galaxy is undetected in the R and I band ground based images taken at the CTIO 4 m Blanco Telescope, giving a lower limit to the color of (R-H)ab> 3.9 and (I-H)ab>3.5 at the 95 % confidence level. The colors of a range of synthetic galactic spectra are computed, showing that the object is likely to be an “old” elliptical galaxy at redshift z>∼1.7. Alternatively the colors can be reproduced by an “old” elliptical galaxy at somewhat lower redshift (>∼1) with significant amount of dust, or by a younger galaxy at higher redshift. This object represents a very interesting target for future VLT observations (Refer to PDF file for exact formulas). en_US
dc.description.sponsorship The authors would like to thank R. P. van der Marel, who developed the Pedestal Estimation Software used for the pedestal subtraction. TT would like to thank Prof. G. Bertin for carefully reading the manuscript. en_US
dc.format.extent 203902 bytes en_US
dc.format.mimetype application/pdf en_US
dc.language.iso en_US en_US
dc.publisher Astronomy and Astrophysics en_US
dc.relation RIT Scholars content from RIT Digital Media Library has moved from to RIT Scholar Works, please update your feeds & links!
dc.relation.ispartofseries vol. 340 en_US
dc.subject Cosmology - observations en_US
dc.subject Galaxies - elliptical and lenticular en_US
dc.subject Galaxies - formation en_US
dc.subject Infrared - galaxies en_US
dc.title An extremely red r^{1/4} galaxy in the test image of the Hubble Deep Field South en_US
dc.type Article en_US

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