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Titolo:
The spatial clustering of distant, z similar to 1, early-type galaxies
Autore:
Daddi, E; Broadhurst, T; Zamorani, G; Cimatti, A; Rottgering, H; Renzini, A;
Indirizzi:
Univ Florence, Dipartimento Astron & Sci Spazio, I-50125 Florence, Italy Univ Florence Florence Italy I-50125 Sci Spazio, I-50125 Florence, Italy European So Observ, D-85748 Garching, Germany European So Observ Garching Germany D-85748 v, D-85748 Garching, Germany Osservatorio Astron Bologna, I-40127 Bologna, Italy Osservatorio Astron Bologna Bologna Italy I-40127 I-40127 Bologna, Italy Osservatorio Astrofis Arcetri, I-50125 Florence, Italy Osservatorio Astrofis Arcetri Florence Italy I-50125 125 Florence, Italy Sterrewacht Leiden, NL-2300 RA Leiden, Netherlands Sterrewacht Leiden Leiden Netherlands NL-2300 RA RA Leiden, Netherlands
Titolo Testata:
ASTRONOMY & ASTROPHYSICS
fascicolo: 3, volume: 376, anno: 2001,
pagine: 825 - 836
SICI:
1432-0746(200109)376:3<825:TSCODZ>2.0.ZU;2-U
Fonte:
ISI
Lingua:
ENG
Soggetto:
ANGULAR-CORRELATION FUNCTIONS; EXTREMELY RED OBJECTS; LYMAN-BREAK GALAXIES; HUBBLE DEEP FIELD; REDSHIFT SURVEY; ULTRALUMINOUS GALAXY; ELLIPTIC GALAXIES; EVOLUTION; MODEL; Z-SIMILAR-TO-3;
Keywords:
cosmology : large-scale structure of Universe galaxies: evolution; galaxies : elliptical and lenticular, cD; galaxies : formation; galaxies : fundamental parameters;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
69
Recensione:
Indirizzi per estratti:
Indirizzo: Daddi, E Univ Florence, Dipartimento Astron & Sci Spazio, Largo E Fermi 5,I-50125 Florence, Italy Univ Florence Largo E Fermi 5 Florence Italy I-50125 ence, Italy
Citazione:
E. Daddi et al., "The spatial clustering of distant, z similar to 1, early-type galaxies", ASTRON ASTR, 376(3), 2001, pp. 825-836

Abstract

We examine the spatial clustering of extremely red objects (EROs) found ina relatively large survey of 700 arcmin(2), containing 400 galaxies with R- Ks > 5 to Ks = 19.2. A comoving correlation length r(o) = 12 +/- 3 h(-1)Mpc is derived, under the assumption that the selection function is described by a passively evolving early-type galaxy population, with an effectiveredshift of z similar to 1.2. This correlation length is very similar to that of local L* elliptical galaxies implying, at face value, no significantclustering evolution in comoving coordinates of early-type galaxies to thelimiting depth of our sample, z similar to 1.5. A rapidly evolving clustering bias can be designed to reproduce a null result; however, our data do not show the corresponding strong reduction in the average population density expected for consistency with underlying growth of the mass-function. We discuss our data in the context of recent ideas regarding bias evolution. The uncertainty we quote on r(o) accounts for the spikey redshift distribution expected along relatively narrow sightlines, which we quantify with detailed simulations. This is an improvement over the standard use of Limber's equation which, because of its implicit assumption of a smooth selection function, underestimates the true noise by a factor of approximate to 3 forthe parameters of our survey. We propose a general recipe for the analysisof angular clustering, suggesting that any measurement of the angular clustering amplitude, A, has an intrinsic additional uncertainty of sigma (A)/A= root AC, where AC is the appropriate integral constraint.

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Documento generato il 04/04/20 alle ore 02:40:17