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The Angular Clustering of Lyman-Break Galaxies at Redshift z=3 | | Mauro Giavalisco
; Charles C. Steidel
; Kurt L. Adelberger
; Mark E. Dickinson
; Max Pettini
; Melinda Kellogg
; | | Date: |
25 Feb 1998 | | Journal: | Astrophys.J. 503 (1998) 543 | | Subject: | astro-ph | | Affiliation: | OCIW, Caltech, JHU--STScI, RGO | | Abstract: | We have measured the angular correlation function w(theta) for a sample of 871 Lyman-break galaxies (LBGs) at z=3. Fitting a power-law to a weighted average of w(theta) from 5 fields, we find the amplitude to be A_w=2 arcsec^{eta} and the slope eta=0.9. The slope is the same as in the local and moderate redshift universe. A slope eta=0.25 or shallower is ruled out by the data at the 99.9% confidence level. Because N(z) of LBGs is well determined from 376 spectroscopic redshifts, the real-space correlation function can be derived from the angular one through the Limber transform. This inversion is rather insensitive to the still relatively large errors on A_w and eta, and the spatial correlation length is much more tightly constrained than either of these parameters. We estimate r_0=3.3 -0.6 +0.7 (2.1 -0.5 +0.4) h^{-1} Mpc (comoving) for q_0=0.1 (0.5) at z=3.04 (h is in units of 100 km/s/Mpc). The correlation length of LBGs at z=3 is comparable to that of present-day spiral galaxies and is only about 50% smaller than that of the ellipticals; it is as large or larger than any measured in galaxy samples at 0.3 | | Source: | arXiv, astro-ph/9802318 | | Services: | Forum | Review | PDF | Favorites | |
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