Environmental effects on the Coma cluster luminosity function

• Type: Article in International Scientific Journal
• Date: 1997

Authors

Lobo, C (Author) Other; Biviano, A (Author) Other; Durret, F (Author) Other; Gerbal, D (Author) Other; LeFevre, O (Author) Other; Mazure, A (Author) Other; Slezak, E (Author) Other

Journal

Title: Astronomy and Astrophysics

Vol. 317

Pages: 385-392

ISSN: 0004-6361

Publisher: EDP Sciences

Indexing

ISI Web of Knowledge - 65 Citations

Scopus - 60 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Authenticus ID: P-001-C6T

Abstract (EN): Using our catalogue of V-26.5 isophotal magnitudes for 6756 galaxies in a region covering 60 x 25 arcmin(2) in the center of the Coma cluster, plus 267 galaxies in a region of 9.7 x 9.4 arcmin(2) around NGC 4839, we derive the luminosity function in the magnitude range 13.5< V-26.5 less than or equal to 21.0 (Corresponding to the absolute magnitude range -22.24 < M(V26.5) less than or equal to -14.74). The luminosity function for this region is well fitted by the combination of a gaussian in its bright part and of a steep Schechter function (of index alpha = -1.8) in its faint part. Luminosity functions derived for individual regions surrounding the brightest galaxies show less steep slopes, strongly suggesting the existence of environmental effects. The implications of such effects on galaxy formation scenarios are discussed.

Language: English

Type (Professor's evaluation): Scientific