2001A&A...379...96M

Query : 2001A&A...379...96M

2001A&A...379...96M - Astronomy and Astrophysics, volume 37996-106 (2001/11-3)

Gravitationally lensed high redshift galaxies in the field of 1E 0657-56.

MEHLERT D., SEITZ S., SAGLIA R.P., APPENZELLER I., BENDER R., FRICKE K.J., HOFFMANN T.L., HOPP U., KUDRITZKI R.-P. and PAULDRACH A.W.A.

Abstract (from CDS):

We present images and long-slit spectra obtained with FORS1 at UT1 of the VLT centered on the gravitational arc of the galaxy cluster 1E 0657-56 (z=0.296). The cluster is one of the hottest, most massive clusters known so far and acts as a powerful gravitational telescope, amplifying the flux of background sources by up to a factor of 20. We present photometric results together with the spectra of the gravitational arc (z=3.24) and four additional amplified high redshift objects (z=2.34 to 3.08) that were also included in the slit by chance coincidence. A magnification map has been obtained from a lens model derived from the multiple image systems. We compare our observed spectra with models and briefly discuss the stellar contents of these galaxies. Furthermore we measured the equivalent widths of the CIV 1550 and SiIV 1400 absorption lines for the objects behind 1E 0657-56 studied here, as well as for some additional starburst galaxies (nearby and at high z). For Civ we find an increasing absorption equivalent width with decreasing redshift. We discuss whether this correlation could be related to the increase of metallicity with the age of the universe.

Abstract Copyright: ∼

Journal keyword(s): galaxies: clusters: general - galaxies: starburst - galaxies: evolution - galaxies: formation - galaxies: stellar content - galaxies: fundamental parameters

Nomenclature: Fig.1, Table 1: [MSS2001] Arc N=1, [MSS2001] Core N=1, [MSS2001] A (Nos A-C, J).

Simbad objects: 19

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Number of rows : 19
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 NGC 1705 Sy2 04 54 13.4661493464 -53 21 39.471592428 12.32 12.96 12.56 12.58 12.9 ~ 692 1
2 ClG 0657-56 ClG 06 58 26.9 -55 58 21           ~ 1077 1
3 [BCG2006] A LeI 06 58 31.171 -55 56 37.67           ~ 6 1
4 NGC 4228 SBG 12 15 39.174 +36 19 36.80 10.63 10.30 9.93 9.74   ~ 1017 1
5 NGC 5253 rG 13 39 55.990 -31 38 24.11 11.48 10.94 10.49 10.33 13.47 ~ 1421 4
6 ZwCl 1358+6245 ClG 13 59 54.3 +62 30 36     18.5     ~ 370 0
7 NAME MS 1512-cB58 AGN 15 14 22.2751 +36 36 25.674     20.64   20.35 ~ 326 0
8 FIRST J151422.4+363620 rG 15 14 22.482 +36 36 21.08           ~ 146 1
9 ACO 2218 ClG 16 35 54.0 +66 13 00           ~ 827 1
10 ACO 2390 ClG 21 53 37.4 +17 41 46           ~ 732 2
11 NGC 7673 EmG 23 27 41.060 +23 35 20.18 12.84 13.17 12.76     ~ 282 2
12 NGC 7714 AGN 23 36 14.1257730600 +02 09 18.197422668   14.91 14.36     ~ 788 1
13 APG 284 PaG 23 36 19 +02 09.3   12.6       ~ 608 0
14 [MSS2001] B G ~ ~           ~ 1 0
15 [MSS2001] Core LeI ~ ~           ~ 3 1
16 [MSS2001] J G ~ ~           ~ 2 0
17 [MSS2001] C G ~ ~           ~ 2 0
18 [MSS2001] A G ~ ~           ~ 3 0
19 NAME 1E 0657-56 Arc+Core Galaxy LeG ~ ~           ~ 10 0

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