2003A&A...401..471C

Query : 2003A&A...401..471C

2003A&A...401..471C - Astronomy and Astrophysics, volume 401471-478 (2003/4-2)

Optical spectroscopy and the UV luminosity function of galaxies in the Abell 1367, Coma and Virgo clusters.

CORTESE L., GAVAZZI G., IGLESIAS-PARAMO J., BOSELLI A. and CARRASCO L.

Abstract (from CDS):

Optical spectroscopy of 93 galaxies, 60 projected in the direction of Abell 1367, 21 onto the Coma cluster and 12 on Virgo, is reported. The targets were selected because they were detected in previous Hα, UV or r' surveys. The present observations bring to 100% the redshift completeness of Hα selected galaxies in the Coma region and to 75% in Abell 1367. All observed galaxies except one show Hα emission and belong to the clusters. This confirms previous determinations of the Hα luminosity function of the two clusters that were based on the assumption that all Hα detected galaxies were cluster members. Using the newly obtained data we re-determine the UV luminosity function of Coma and we compute for the first time the UV luminosity function of A1367. Their faint end slopes remain uncertain (-2.00<α←1.35) due to insufficient knowledge of the background counts. If 90% of the UV selected galaxies without redshift will be found in the background (as our survey indicates), the slope of UV luminosity function will be α~-1.35, in agreement with the UV luminosity function of the field (Sullivan et al., 2000MNRAS.312..442S) and with the Hα luminosity functions of the two clusters (Iglesias-Paramo et al., 2002A&A...384..383I). We discover a point-like Hα source in the Virgo cluster, associated with the giant galaxy VCC873, possibly an extragalactic HII region similar to the one recently observed in Virgo by Gerhard et al. (2002ApJ...580L.121G).

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Journal keyword(s): galaxies: distances and redshifts - galaxies: luminosity function, mass function - galaxies: clusters: individuals: Abell 1367, Coma, Virgo

VizieR on-line data: <Available at CDS (J/A+A/401/471): table2.dat>

Nomenclature: Table 2: [CGI2003] JHHMMSS+DDMMSS N=60+21+12.

Simbad objects: 98

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Number of rows : 98
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 LEDA 4290520 GiC 11 40 38.98923 +19 54 38.4567           ~ 11 0
2 [CGI2003] J114110+201117 GiC 11 41 10.5608203344 +20 11 18.740698836           ~ 7 0
3 LEDA 1617816 GiC 11 41 17.45490 +20 08 33.6006           ~ 12 0
4 [CGI2003] J114137+194451 GiC 11 41 37.90 +19 44 51.0           ~ 1 0
5 LEDA 1614356 GiC 11 41 41.22036 +20 02 31.9839           ~ 9 0
6 LEDA 1613503 GiC 11 41 42.60720 +20 00 56.3048           ~ 10 0
7 SDSS J114149.82+194604.3 GiC 11 41 49.82688 +19 46 04.3572           ~ 8 0
8 LEDA 3775384 GiC 11 41 57.0340960464 +19 48 35.845914996           ~ 3 0
9 LEDA 1608592 rG 11 42 29.072 +19 52 37.37 18.90 19.07   17.39   ~ 5 0
10 [CGI2003] J114238+192103 GiC 11 42 38.40 +19 21 03.0           ~ 1 0
11 SDSS J114240.34+195717.0 GiC 11 42 40.356 +19 57 17.18 19.17 19.35   18.16   ~ 7 0
12 2MASX J11425205+1925439 GiC 11 42 52.0753367472 +19 25 44.301501444           ~ 9 0
13 2MASX J11425321+2010459 GiC 11 42 53.210 +20 10 45.93 18.00 17.66   16.03   ~ 12 0
14 2MASX J11430045+2012309 LIN 11 43 00.4091808336 +20 12 30.631597848 17.77 17.41   15.57   ~ 8 0
15 2MASX J11430634+1956199 GiC 11 43 06.3242700600 +19 56 20.382738648 17.08 16.66   15.02   ~ 17 0
16 LEDA 200154 GiC 11 43 07.957 +19 41 57.40 17.90 18.19   16.99   ~ 20 0
17 2MASX J11431096+2001469 GiC 11 43 10.9590729216 +20 01 46.937025876           ~ 9 0
18 2MASX J11431258+1938415 GiC 11 43 12.6082521744 +19 38 41.385052428           ~ 5 0
19 SDSS J114313.05+193646.9 GiC 11 43 13.054 +19 36 46.97           ~ 15 0
20 2MASX J11431420+1940165 GiC 11 43 14.1832352400 +19 40 15.952357092 18.26 17.92   15.90   ~ 5 0
21 2MASX J11431558+1956155 GiC 11 43 15.5968885248 +19 56 14.998154208           ~ 4 0
22 LEDA 3775836 GiC 11 43 31.2416826936 +20 00 59.760396828 17.96 18.01   16.51   ~ 9 0
23 LEDA 1587875 GiC 11 43 37.728 +19 18 37.04           ~ 7 0
24 LEDA 1613851 GiC 11 43 41.55605 +20 01 36.9224 18.48 18.66   17.57   ~ 15 0
25 NVSS J114345+192334 rG 11 43 45.5355052152 +19 23 33.427146444           ~ 19 0
26 2MASX J11435098+1926083 GiC 11 43 50.9496663024 +19 26 08.016591264           ~ 12 0
27 2MASX J11435352+1944223 GiC 11 43 53.5666783464 +19 44 21.767745228 17.47 17.15   15.54   ~ 19 0
28 [CGI2003] J114353+194321 GiC 11 43 53.88 +19 43 21.3       17.17   ~ 2 0
29 SDSS J114355.78+192746.1 GiC 11 43 55.78872 +19 27 46.1664           ~ 5 0
30 2MASX J11435741+1956083 GiC 11 43 57.4456175784 +19 56 08.393511372 17.86 17.53   16.01   ~ 16 0
31 2MASX J11440102+1929543 GiC 11 44 00.9920869128 +19 29 54.471654600           ~ 7 0
32 SDSS J114401.12+191556.1 GiC 11 44 01.1227538592 +19 15 56.069873784           ~ 2 0
33 LEDA 1586963 GiC 11 44 01.2 +19 17 10           ~ 2 0
34 2MASX J11440301+1944243 GiC 11 44 03.0319238904 +19 44 24.796380264 17.88 17.52   15.87   ~ 12 0
35 SDSS J114407.65+193720.5 GiC 11 44 07.65409 +19 37 20.6090           ~ 2 0
36 LEDA 139682 GiC 11 44 13.90104 +19 20 11.3856           ~ 11 0
37 2MASX J11441930+1919038 GiC 11 44 19.3183299048 +19 19 03.646004628           ~ 2 0
38 [CGI2003] J114430+195718 GiC 11 44 30.369 +19 57 19.08           ~ 3 0
39 [CGI2003] J114444+194814 GiC 11 44 44.28 +19 48 14.0           ~ 1 0
40 ACO 1367 ClG 11 44 44.6 +19 41 59           ~ 1127 1
41 [CGI2003] J114446+194737 GiC 11 44 46.13 +19 47 37.5           ~ 1 0
42 [CGI2003] J114446+194639 GiC 11 44 46.68 +19 46 39.5           ~ 1 0
43 [CGI2003] J114447+194648 GiC 11 44 47.54 +19 46 48.8           ~ 4 0
44 [CGI2003] J114450+194605 GiC 11 44 50.81 +19 46 05.1           ~ 1 0
45 SDSS J114451.09+194718.2 GiC 11 44 51.094 +19 47 18.15 20.11 18.72   19.93   ~ 12 0
46 SDSS J114454.61+194732.5 GiC 11 44 54.61776 +19 47 32.5680   18.35       ~ 11 0
47 2MASX J11445486+2001019 GiC 11 44 54.866 +20 01 01.99           ~ 12 0
48 [CGI2003] J114459+194757 GiC 11 44 59.35 +19 47 57.1           ~ 1 0
49 2XMM J114501.7+194549 GiC 11 45 01.8009155304 +19 45 49.411825704           ~ 16 0
50 LEDA 1604334 GiC 11 45 02.66101 +19 45 20.1079           ~ 8 0
51 [CGI2003] J114505+194514 GiC 11 45 05.67 +19 45 14.8           ~ 1 0
52 2MASX J11450584+1947329 GiC 11 45 05.8275118608 +19 47 32.919173880           ~ 5 0
53 2MASX J11450658+2009229 GiC 11 45 06.5739275400 +20 09 23.126676732           ~ 16 0
54 2MASX J11451377+1945219 GiC 11 45 13.777 +19 45 21.94           ~ 18 0
55 SDSSCGA 2073.2 GiC 11 45 14.275 +20 08 38.01           ~ 4 0
56 SDSS J114518.13+200009.0 GiC 11 45 18.12976 +20 00 08.9296           ~ 7 0
57 LEDA 197636 GiC 11 45 25.50573 +19 49 05.3174           ~ 12 0
58 2MASX J11454117+1946127 GiC 11 45 41.1647022936 +19 46 12.865075644           ~ 17 0
59 LEDA 1602021 GiC 11 45 45.264 +19 41 30.67           ~ 12 0
60 2MASX J11455859+1948108 GiC 11 45 58.5940126440 +19 48 10.985892660           ~ 14 0
61 2MASX J11461191+1951108 GiC 11 46 11.9725103904 +19 51 10.485974412           ~ 13 0
62 Z 42-33 GiG 12 20 17.351 +04 12 05.14   15.21       ~ 115 1
63 [CGI2003] J122544+130740 GiC 12 25 44.20 +13 07 40.0           ~ 1 0
64 NGC 4388 Sy2 12 25 46.820 +12 39 43.45 11.91 11.76 11.02     ~ 1433 2
65 [CGI2003] J122603+130723 GiC 12 26 02.91 +13 07 23.7           ~ 1 0
66 [CGI2003] J122605+130725 GiC 12 26 05.75 +13 07 25.7           ~ 1 0
67 NGC 4402 GiC 12 26 07.65312 +13 06 47.9376   12.55       ~ 421 2
68 [CGI2003] J123015+122812 GiC 12 30 15.20 +12 28 12.0           ~ 1 0
69 [CGI2003] J123021+121614 GiC 12 30 21.10 +12 16 14.0           ~ 1 0
70 LEDA 169451 LSB 12 30 46.386 +12 05 56.58     17.32   16.47 ~ 16 0
71 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
72 [CGI2003] J123222+090944 GiC 12 32 22.81 +09 09 44.1           ~ 1 0
73 [CGI2003] J123315+091448 GiC 12 33 15.25 +09 14 48.0           ~ 1 0
74 [CGI2003] J123728+082540 GiC 12 37 28.00 +08 25 40.0           ~ 1 0
75 LEDA 42144 GiC 12 37 28.516 +08 47 40.28   17       ~ 20 0
76 LEDA 3795583 GiC 12 45 47.75760 +10 26 24.4320           ~ 2 0
77 2MASX J12580196+2827225 GiC 12 58 02.0018006568 +28 27 22.986936180           ~ 8 0
78 LEDA 1838251 EmG 12 58 15.06172 +28 31 18.4196     16.37 15.99   ~ 22 0
79 LEDA 1832725 EmG 12 58 23.734 +28 19 43.72           ~ 11 0
80 2MASX J12582865+2831367 GiC 12 58 28.6242328128 +28 31 36.527913300   16       ~ 12 0
81 2MASX J12582949+2818047 GiC 12 58 29.5173675744 +28 18 04.408908660   16 16.08 15.82   ~ 25 0
82 LAMOST J125845.68+284132.9 GiC 12 58 45.648 +28 41 33.55     16.65 16.71   ~ 9 0
83 A2 259 EmG 12 58 45.84912 +28 32 34.5012   18.65 17.19 17.23   ~ 13 0
84 LEDA 44523 EmG 12 58 56.1079620888 +28 27 49.011750612   16.5 15.30 15.24   ~ 31 1
85 SDSS J125917.92+283726.4 EmG 12 59 17.9379398760 +28 37 26.475940380           ~ 9 0
86 LEDA 44586 EmG 12 59 23.1503980152 +28 29 19.019855220   16 15.73 15.65   ~ 38 0
87 2MASX J12592407+2820498 GiC 12 59 24.1215195456 +28 20 49.929134280           ~ 16 0
88 2MASX J12594129+2830257 GiC 12 59 41.3119787784 +28 30 25.922571372   16 14.87 14.60   ~ 24 0
89 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 5141 2
90 2MASX J12595670+2755483 GiC 12 59 56.6529405408 +27 55 48.133297416 16.72 16.765 15.32 14.88 14.592 ~ 71 0
91 SDSS J130004.39+283612.5 EmG 13 00 04.3869577920 +28 36 12.607724520     15.44 15.31   ~ 12 0
92 GMP 2565 EmG 13 00 37.14213 +28 39 50.8176   17.96 16.77 16.62   ~ 22 0
93 2MASX J13012734+2810556 GiC 13 01 27.3159556920 +28 10 55.702911504           ~ 4 0
94 [CGI2003] J130128+281515 GiC 13 01 28.63 +28 15 15.9           ~ 2 0
95 LAMOST J130130.82+283326.6 SyG 13 01 30.8641865640 +28 33 23.991186132           ~ 12 0
96 GMP 1925 GiC 13 01 40.913 +28 14 56.48     18.96 18.94   ~ 5 0
97 2MASX J13015184+2808207 GiC 13 01 51.8390619960 +28 08 20.528117268           ~ 7 0
98 [CGI2003] J130158+282114 GiC 13 01 58.43 +28 21 14.8           ~ 4 0

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