2008AJ....135..319D

Query : 2008AJ....135..319D

2008AJ....135..319D - Astron. J., 135, 319-325 (2008/January-0)

Searching for star formation outside galaxies: multiwavelength analysis of the intragroup medium of Hickson Compact Group 100.

DE MELLO D.F., TORRES-FLORES S. and MENDES DE OLIVEIRA C.

Abstract (from CDS):

We use multiwavelength data (H I, FUV, NUV, R) to search for evidence of star formation in the intragroup medium of the Hickson Compact Group 100. We find that young star-forming regions are located in the intergalactic H I clouds of the compact group which extend to over 130 kpc away from the main galaxies. A tidal dwarf galaxy (TDG) candidate is located in the densest region of the H I tail, 61 kpc from the brightest group member and its age is estimated to be only 3.3 Myr. Fifteen other intragroup H II regions and TDG candidates are detected in the Galaxy Evolution Explorer (GALEX) FUV image and within a field 10'x10' encompassing the H I tail. They have ages <200 Myr, H I masses of 109.2–10.4 M☉, 0.001 <SFR <0.01 M☉.yr–1, and stellar masses 104.3-106.5 M☉. The H I clouds to which many of them are associated have column densities about one order of magnitude lower than N(H I) ∼1021 cm–2.

Abstract Copyright: ∼

Journal keyword(s): galaxies: clusters: general - galaxies: clusters: individual: HCG100 - galaxies: stellar content

Nomenclature: Table 2: [DTM2008] NNA (Nos 1-16, 13A-13B).

Simbad objects: 34

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Number of rows : 34
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 [DTM2008] 1 UV 00 00 57.8 +13 03 53       18.80   ~ 1 0
2 [DTM2008] 2 UV 00 01 00.6 +13 06 58       19.54   ~ 1 0
3 [DTM2008] 3 UV 00 01 05.33 +13 01 25.0       19.09   ~ 4 0
4 [DTM2008] 4 UV 00 01 10.23 +13 05 08.9       20.25   ~ 4 0
5 [DTM2008] 5 UV 00 01 10.4 +13 08 16       19.42   ~ 1 0
6 MCG+02-01-009 AG? 00 01 13.3051746288 +13 08 38.132079252   16.01   15.46   ~ 41 0
7 [DTM2008] 6 UV 00 01 13.84 +13 09 46.0       17.48   ~ 2 0
8 MCG+02-01-010 AG? 00 01 14.971 +13 06 44.65   16.97   14.67   ~ 44 0
9 2MASS J00011619+1301443 UV 00 01 16.19 +13 01 44.4       18.43   ~ 1 0
10 [DTM2008] 8 UV 00 01 16.5 +13 04 21       20.39   ~ 1 0
11 HCG 100 CGG 00 01 19.783 +13 07 21.81           ~ 58 0
12 NGC 7803 GiG 00 01 19.9689164664 +13 06 40.486549320   13.8   12.62   ~ 98 0
13 [DTM2008] 9 UV 00 01 22.3 +13 07 15       20.35   ~ 1 0
14 [DTM2008] 10 UV 00 01 24.8 +13 04 13       19.75   ~ 1 0
15 Z 433-14 GiG 00 01 26.032 +13 06 46.59   15.3   14.28   ~ 57 0
16 [DTM2008] 11 UV 00 01 27.0 +13 03 12       19.42   ~ 1 0
17 [DTM2008] 12 UV 00 01 28.9 +13 08 15       18.88   ~ 1 0
18 [DTM2008] 13B UV 00 01 29.3 +13 05 54       17.77   ~ 1 0
19 MCG+02-01-013 G 00 01 29.5 +13 05 54   18   17.69   ~ 7 0
20 [DTM2008] 13A UV 00 01 29.7 +13 05 55       17.83   ~ 1 0
21 [DTM2008] 14 UV 00 01 30.56 +13 06 14.5       20.42   ~ 2 0
22 [DTM2008] 15 UV 00 01 31.1 +13 05 42       19.52   ~ 1 0
23 [DTM2008] 16 UV 00 01 31.6 +13 04 54       18.89   ~ 1 0
24 HCG 16 CGG 02 09 40.82 -10 11 02.0           ~ 175 0
25 NGC 1490 GiG 03 53 34.2476611296 -66 01 04.915062372   13.42   11.94 12.6 ~ 45 0
26 NGC 1533 EmG 04 09 51.8356041744 -56 07 06.410207352   11.77 10.92 10.27 11.0 ~ 209 0
27 HCG 31 CGG 05 01 37 -04 15.4           ~ 132 0
28 ACO 1367 ClG 11 44 44.6 +19 41 59           ~ 1127 1
29 NGC 7252 AGN 22 20 44.7748209648 -24 40 41.909518200 12.26 12.46 12.06 11.57   ~ 720 1
30 NAME Stephan's Quintet CGG 22 35 57.5 +33 57 36           ~ 480 1
31 NGC 7769 LIN 23 51 03.9747703056 +20 09 01.552564620   12.77       ~ 157 2
32 NGC 7770 GiG 23 51 22.610 +20 05 48.56   14.5       ~ 106 1
33 NGC 7771 GiG 23 51 24.880 +20 06 42.57 13.42 13.08 12.25     ~ 350 3
34 ESO 149-3 AG? 23 52 02.15 -52 34 33.9 15.48 15.10 14.89 14.84 14.9 ~ 88 0

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