منابع مشابه
The CYDER survey: first results
We present the Calán-Yale Deep Extragalactic Research (CYDER) Survey. The broad goals of the survey are the study of stellar populations, the star formation history of the universe and the formation and evolution of galaxies. The fields studied include Chandra deep pointings in order to characterize the X-ray faint populations. Here we present the results on the first fields studied. We find th...
متن کاملFirst Results from the SPICES Survey
We present first results from SPICES, the Spectroscopic, Photometric, Infrared-Chosen Extragalactic Survey. SPICES is comprised of four ≈ 30 arcmin high Galactic latitude fields with deep BRIzJKs imaging reaching depths of ≈ 25 mag (AB) in the optical and ≈ 23 mag (AB) in the near-infrared. To date we have 626 spectroscopic redshifts for infrared-selected SPICES sources with Ks < 20 (Vega). The...
متن کاملAn X-ray Selected AGN at z=4.6 Discovered by the CYDER Survey
We present the discovery of a high redshift, X-ray selected AGN by the CalanYale Deep Extragalactic Research (CYDER) survey: CXOCY J033716.7-050153, located at z = 4.61, the second high redshift AGN discovered by this survey. Here, we present its optical, near-IR and X-ray properties and compare it with other optical and X-ray selected high redshift AGN. The optical luminosity of this object is...
متن کاملThe Red-Sequence Cluster Survey: first lensing results
The Red-Sequence Cluster Survey (RCS) is a 100 deg galaxy cluster survey designed to provide a large sample of optically selected clusters of galaxies with redshifts 0.1 < z < 1.4. The survey data are also useful for a variety of lensing studies. Several strong lensing clusters have been discovered so far, and follow up observations are underway. In these proceedings we present some of the firs...
متن کاملResults from the First World-Wide Web User Survey
The explosion of World Wide Web (WWW) across the Internet is staggering, both in terms of number of users and the amount of activity. However, to date, no reliable characterization exists of WWW browser users. In this paper, we report results from a survey that was posted on the Web for a month, in January of 1994. There were several goals motivating our survey. First, we wished to demonstrate ...
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ژورنال
عنوان ژورنال: Astronomische Nachrichten
سال: 2003
ISSN: 0004-6337,1521-3994
DOI: 10.1002/asna.200310011