2007A&A...465..787O

Query : 2007A&A...465..787O

2007A&A...465..787O - Astronomy and Astrophysics, volume 465787-798 (2007/4-3)

Extended, regular HI structures around early-type galaxies.

OOSTERLOO T.A., MORGANTI R., SADLER E.M., VAN DER HULST T. and SERRA P.

Abstract (from CDS):

We discuss the morphology and kinematics of the HI of a sample of 30 southern gas-rich early-type galaxies selected from the HI Parkes All-Sky Survey (HIPASS). This is the largest collection of high-resolution HI data of a homogeneously selected sample. Given the sensitivity of HIPASS, these galaxies represent the most HI-rich early-type galaxies. In two-thirds of the galaxies, we find the HI to be in a large, regular disk- or ring-like structure that in some cases is strongly warped. In the remaining cases we find the HI distributed in irregular tails or clouds offset from the galaxy. The giant, regular HI structures can be up to ∼200kpc in diameter and contain up to 1010M☉ of HI. The incidence of irregular HI structures appears to be somewhat higher in elliptical galaxies, but the large, regular structures are observed in both elliptical and S0 galaxies and are not strictly connected to the presence of a stellar disk. If these two types of galaxies are the result of different formation paths, this is not strongly reflected in the characteristics of the HI. The size and the regular kinematics of the HI structures imply that the neutral hydrogen must have settled in these galaxies several Gyr ago. Merging as well as gas accretion from the IGM are viable explanations for the origin of the gas in these galaxies. The average column density of the HI is low so that little star formation is expected to occur and these early-type galaxies can remain gas rich for very long periods of time. The large HI structures likely represent key structures for tracing the origin and evolution of these galaxies.

Abstract Copyright: ∼

Journal keyword(s): galaxies: elliptical and lenticular, cD - galaxies: ISM - radio lines: galaxies

Simbad objects: 58

goto Full paper

goto View the references in ADS

Number of rows : 58
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 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
2 IC 1724 Sy2 01 43 09.6872613192 -34 14 31.063212960   14.09   12.39   ~ 28 0
3 ESO 153-4 IG 01 58 30.4 -56 14 56   14.65   13.09   ~ 14 0
4 NGC 802 AG? 01 59 05.9571021576 -67 52 12.129960216   14.17   13.32 13.6 ~ 38 0
5 IC 1813 rG 02 30 49.4689315296 -34 13 15.086526924   14.20   12.80   ~ 30 0
6 NGC 1490 GiG 03 53 34.2476611296 -66 01 04.915062372   13.42   11.94 12.6 ~ 45 0
7 IC 2006 EmG 03 54 28.4628183240 -35 58 01.673622516   12.39   10.94 11.9 ~ 217 0
8 IC 2041 GiG 04 12 34.9225083912 -32 49 02.872381224   14.772   13.841   ~ 24 0
9 NGC 1596 GiP 04 27 38.1079224792 -55 01 39.852944076   12.01 10.97 10.54   ~ 121 0
10 ESO 118-34 GiG 04 40 17.485 -58 44 39.40   13.50 13.52 12.67 13.4 ~ 62 0
11 IC 2122 Sy2 05 19 01.4064467448 -37 05 21.713553780   13.83   12.18   ~ 25 0
12 NGC 1947 GiG 05 26 47.613 -63 45 36.08   11.76 10.80 10.06   ~ 141 0
13 NGC 2328 Sy1 07 02 36.193 -42 04 06.88   13.04   12.25 13.0 ~ 54 0
14 IC 2200A GiG 07 28 06.3548348880 -62 21 47.206678104   13.74   12.28   ~ 42 0
15 ESO 88-18 AG? 07 29 06.008 -66 54 42.88   14.91   14.59   ~ 17 0
16 NGC 2434 EmG 07 34 51.1504542360 -69 17 02.996020032 12.82 12.50 11.26 10.84   ~ 192 1
17 NGC 2904 GiG 09 30 17.0131250472 -30 23 06.114319404   13.69   12.04   ~ 51 0
18 NGC 3108 GiG 10 02 29.0239265520 -31 40 38.785663704   12.48   11.03   ~ 69 0
19 ESO 92-21 GiG 10 21 05.5193421384 -66 29 31.097169744   13.89   13.5 13.3 ~ 32 0
20 MCG-07-23-001 Sy2 10 53 05.9569438464 -40 19 44.791775544   13.91   12.27   ~ 51 0
21 ESO 215-32 GiG 11 11 22.4293277472 -48 01 12.016823628   14.20   12.90   ~ 17 0
22 Malin 1 LSB 12 36 59.3463193464 +14 19 49.164305988   17.80       ~ 224 0
23 MCG-07-26-021 GiG 12 39 50.3132067672 -41 06 24.318064764   14.5       ~ 19 0
24 MCG-06-28-020 GiG 12 48 00.2915359080 -39 37 51.247806384   14.45   13.11   ~ 20 0
25 ESO 323-13 EmG 12 51 32.8930569624 -41 13 39.691731396   15.26 13.99 13.67   ~ 28 0
26 ESO 269-12 Sy2 12 56 40.5123469200 -46 55 34.274942184   14.72   13.54 13.9 ~ 65 0
27 ESO 269-14 EmG 12 57 06.969 -46 52 17.73   14.58   13.61   ~ 22 0
28 MCG-06-29-004 EmG 13 01 05.3881739880 -35 36 59.520031884   14.02   12.77 13.1 ~ 46 0
29 NGC 4936 Sy2 13 04 17.091 -30 31 34.71   11.76 12.23 10.13 10.9 ~ 115 0
30 IC 4200 AGN 13 09 34.7798967888 -51 58 07.134907440   13.89 13.82 12.10 12.6 ~ 41 0
31 NGC 4988 AG? 13 09 54.3875452536 -43 06 20.288724408   13.86   12.76   ~ 22 1
32 ESO 269-80 Sy1 13 19 00.9436034088 -47 15 27.985734936   13.85   12.24   ~ 38 0
33 NAME Centaurus A BLL 13 25 27.61521044 -43 01 08.8050291   8.18 6.84 6.66   ~ 4774 3
34 NGC 5234 Sy2 13 37 29.9376998328 -49 50 13.110021276   14.00   13.5 12.9 ~ 24 0
35 IC 4312 GiG 13 40 30.9299695368 -51 04 15.271755384   13.41   11.78   ~ 20 0
36 NGC 5266 Sy2 13 43 02.0849196792 -48 10 10.000751592   11.89 11.14 11.9 11.3 ~ 167 0
37 NGC 5291 Sy2 13 47 24.5000261808 -30 24 25.449445800   15.18 14.00 13.57 12.7 ~ 161 1
38 ESO 221-20 EmG 13 58 23.0725735128 -48 28 33.496029732   13.25   11.45   ~ 30 0
39 ESO 137-44 EmG 16 50 54.6407316936 -61 48 45.538260264   13.68 13.65 11.78   ~ 20 0
40 ESO 137-45 Sy2 16 51 02.7370748808 -60 48 31.172134860   13.27   11.26   ~ 41 0
41 ESO 138-1 Sy2 16 51 20.2789606296 -59 14 04.184655576   14.35 13.63 13.02   ~ 162 0
42 IC 4647 AG? 17 26 03.7284681768 -80 11 42.484244352   14.47   13.21 13.3 ~ 21 0
43 ESO 140-31 GiG 18 37 53.6530245936 -57 36 39.996247860   13.64       ~ 23 0
44 ESO 103-49 Sy2 18 42 01.5158699904 -65 05 44.202012612   14.96   13.29   ~ 22 0
45 IC 4765 rG 18 47 18.150 -63 19 52.14   12.33 11.36 10.53 10.75 ~ 88 2
46 IC 4847 EmG 19 23 31.9028866678 -65 30 23.806837546   14.97   13.72   ~ 17 0
47 NGC 6799 EmG 19 32 16.5461323248 -55 54 28.294280748   13.41   11.98   ~ 47 0
48 ICRF J193925.0-634245 Sy2 19 39 25.0245304992 -63 42 45.640373400   18.87 18.37 17.64   ~ 1332 2
49 IC 4889 EmG 19 45 15.168 -54 20 38.91   12.25 11.08 10.73 11.5 ~ 140 0
50 NGC 6850 Sy2 20 03 30.0976504824 -54 50 41.335553832   13.52 13.07 11.96   ~ 37 0
51 IC 4970 AG? 20 16 57.35 -70 44 59.1   14.16 13.88 13.06   ~ 32 0
52 NGC 6877 AG? 20 18 36.017 -70 51 13.85   13.17 12.61 11.83   ~ 37 0
53 ESO 234-11 EmG 20 22 03.0228398424 -47 59 12.902119836   14.59   13.05   ~ 24 0
54 NGC 6920 Sy2 20 43 57.4877734861 -80 00 03.198389411   13.08   11.27 12.0 ~ 53 0
55 IC 5063 Bla 20 52 02.15 -57 04 06.7   12.92 13.60 11.30   ~ 710 1
56 NGC 7166 EmG 22 00 32.9063111088 -43 23 22.828215012   12.64 11.84 11.20   ~ 73 0
57 IC 1459 rG 22 57 10.60682195 -36 27 43.9966421   10.96 11.85 9.34 10.3 ~ 652 2
58 ESO 240-10 Sy1 23 37 44.4046340640 -47 30 22.668150492   12.49   11.15   ~ 58 0

To bookmark this query, right click on this link: simbad:objects in 2007A&A...465..787O and select 'bookmark this link' or equivalent in the popup menu