2007ApJ...671..190S


Query : 2007ApJ...671..190S

2007ApJ...671..190S - Astrophys. J., 671, 190-202 (2007/December-2)

Hα tail, intracluster H II regions, and star formation: ESO 137-001 in Abell 3627.

SUN M., DONAHUE M. and VOIT G.M.

Abstract (from CDS):

We present the discovery of a 40 kpc Hα tail and at least 29 emission-line objects downstream of a star-forming galaxy, ESO 137-001, in the rich, nearby cluster A3627. The galaxy is known to possess a dramatic 70 kpc X-ray tail. The detected Hα tail coincides positionally with the X-ray tail. The Hα emission in the galaxy is sharply truncated on the front and the sides near the nucleus, indicating significant ram pressure stripping. ESO 137-001 is thus the first cluster late-type galaxy known unambiguously to have both an X-ray tail and an Hα tail. The emission-line objects are all distributed downstream of the galaxy, with projected distances of up to 39 kpc from the galaxy. From the analysis on the Hαoff frame and the estimate of the background emission-line objects, we conclude that it is very likely that all 29 emission-line objects are H II regions in A3627. The high surface number density and luminosities of these H II regions (up to 1040 ergs/s) dwarf the previously known examples of isolated H II regions in clusters. We suggest that star formation may proceed in the stripped ISM in both the galactic halo and intracluster space. The total mass of formed stars in the stripped ISM of ESO 137-001 may approach several times 107 M. Therefore, stripping of the ISM not only contributes to the ICM, but also adds to the intracluster stellar light through subsequent star formation. The data also imply that ESO 137-001 is in an active stage of transformation accompanied by the buildup of a central bulge and depletion of the ISM.

Abstract Copyright:

Journal keyword(s): Galaxies: Clusters: Individual: Alphanumeric: A3627 - Galaxies: Evolution - galaxies: individual (ESO 137-001) - Galaxies: ISM - ISM: H II Regions - Stars: Formation

Nomenclature: Table 1: [SDV2007] ELONN (Nos ELO1 to ELO8).

Status at CDS : All or part of tables of objects will not be ingested in SIMBAD.

CDS comments: p.200: galaxy 131124-012040 = [GH91] 21 (= EQ J131124-012040)

Simbad objects: 22

goto Full paper

goto View the references in ADS

Number of rows : 22
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 UGC 6697 GiG 11 43 49.078 +19 58 06.46 13.96 14.35 13.59 13.29   ~ 205 2
2 ACO 1367 ClG 11 44 44.6 +19 41 59           ~ 1021 1
3 LAWD 37 WD* 11 45 42.9170659451 -64 50 29.464090822 11.08 11.725 11.513 11.34 11.163 DQ 242 0
4 NGC 4388 Sy2 12 25 46.820 +12 39 43.45 11.91 11.76 11.02     ~ 1237 2
5 NGC 4402 GiP 12 26 07.65312 +13 06 47.9376   12.55       ~ 371 2
6 NAME Vir I ClG 12 26 32.1 +12 43 24   10.00 8.49     ~ 6102 0
7 ACO 1656 ClG 12 59 48.7 +27 58 50           ~ 4399 2
8 Mrk 60 AGN 13 00 09.1419128408 +27 51 59.342884533 16.418 16.39 15.82 15.358 14.835 ~ 104 0
9 ACO 1689 ClG 13 11 29.5 -01 20 28           ~ 1052 0
10 [RS2005] ACO 2125 481 GiC 15 41 09.74 +66 15 45.0           ~ 22 0
11 ACO 2125 ClG 15 41 14.1 +66 15 57           ~ 120 1
12 2MASX J16131011-6045045 G 16 13 10.1787135975 -60 45 04.054383851   17.1       ~ 5 0
13 ESO 137-1 G 16 13 27.305 -60 45 50.59   14.84   13.87   ~ 96 0
14 ACO 3627 ClG 16 14 22.5 -60 52 07           ~ 263 2
15 ESO 137-6 GiG 16 15 03.864 -60 54 26.14   13.08 12.83 11.33   ~ 93 0
16 ESO 137-8 BiC 16 15 46.099 -60 55 07.19   12.84   11.10   ~ 43 0
17 ESO 137-10 GiG 16 15 50.134 -60 48 11.15   12.46   11.13   ~ 43 0
18 CD-38 10980 WD* 16 23 33.8384178546 -39 13 46.160032569 9.916 10.885 11.029 10.936 10.841 DA2 451 0
19 NAME Galactic Center gam 17 45 39.60213 -29 00 22.0000           ~ 12459 0
20 NAME Stephan's Quintet CGG 22 35 57.5 +33 57 36           ~ 387 1
21 Feige 110 HS* 23 19 58.3995050606 -05 09 56.170282845 10.360 11.45 11.50 11.970 12.145 sdO8VIIIHe5 585 1
22 ACO 2667 ClG 23 51 39.37 -26 05 02.7           ~ 157 0

To bookmark this query, right click on this link: simbad:objects in 2007ApJ...671..190S and select 'bookmark this link' or equivalent in the popup menu


2021.10.28-08:17:33

© Université de Strasbourg/CNRS

    • Contact