2005ApJ...619L..43A

Query : 2005ApJ...619L..43A

2005ApJ...619L..43A - Astrophys. J., 619, L43-L46 (2005/January-3)

The GALEX VIMOS-VLT Deep Survey measurement of the evolution of the 1500 Å luminosity function.

ARNOUTS S., SCHIMINOVICH D., ILBERT O., TRESSE L., MILLIARD B., TREYER M., BARDELLI S., BUDAVARI T., WYDER T.K., ZUCCA E., LE FEVRE O., MARTIN D.C., VETTOLANI G., ADAMI C., ARNABOLDI M., BARLOW T., BIANCHI L., BOLZONELLA M., BOTTINI D., BYUN Y.-I., CAPPI A., CHARLOT S., CONTINI T., DONAS J., FORSTER K., FOUCAUD S., FRANZETTI P., FRIEDMAN P.G., GARILLI B., GAVIGNAUD I., GUZZO L., HECKMAN T.M., HOOPES C., IOVINO A., JELINSKY P.N., LE BRUN V., LEE Y.-W., MACCAGNI D., MADORE B.F., MALINA R., MARANO B., MARINONI C., McCRACKEN H.J., MAZURE A., MENEUX B., MERIGHI R., MORRISSEY P., NEFF S., PALTANI S., PELLO R., PICAT J.P., POLLO A., POZZETTI L., RADOVICH M., RICH R.M., SCARAMELLA R., SCODEGGIO M., SEIBERT M., SIEGMUND O., SMALL T., SZALAY A.S., WELSH B., XU C.K., ZAMORANI G. and ZANICHELLI A.

Abstract (from CDS):

We present the first measurement of the galaxy luminosity function (LF) at 1500 Å in the range 0.2≤z≤1.2 based on Galaxy Evolution Explorer VIMOS-VLT Deep Survey observations (∼1000 spectroscopic redshifts for galaxies with NUV≤24.5) and at higher z using existing data sets. Our main results are summarized as follows: (1) Luminosity evolution is observed with ΔM*~-2.0 mag between z=0 and z=1 and ΔM*~-1.0 mag between z=1 and z=3. This confirms that the star formation activity was significantly higher in the past. (2) The LF slopes vary in the range -1.2≥α≥-1.65, with a marginally significant hint of increase at higher z. (3) We split the sample in three rest-frame (B-I) intervals, providing an approximate spectral type classification: Sb-Sd, Sd-Irr, and unobscured starbursts. We find that the bluest class evolves less strongly in luminosity than the two other classes. On the other hand, their number density increases sharply with z (∼15% in the local universe to ∼55% at z∼1), while that of the reddest classes decreases.

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Journal keyword(s): Cosmology: Observations - Galaxies: Evolution - Galaxies: Luminosity Function, Mass Function - Ultraviolet: Galaxies

Simbad objects: 3

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Number of rows : 3
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME Chandra Deep Field-South reg 03 32 28.0 -27 48 30           ~ 2282 1
2 NAME Hubble Deep Field reg 12 36 49.5 +62 12 58           ~ 1967 1
3 NAME HDF-S reg 22 32 56 -60 33.0           ~ 580 0

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