2001A&A...375..219B


C.D.S. - SIMBAD4 rel 1.7 - 2020.08.09CEST08:17:49

2001A&A...375..219B - Astronomy and Astrophysics, volume 375, 219-226 (2001/8-3)

Status of HI searches for CHVCs beyond the Local Group.

BRAUN R. and BURTON W.B.

Abstract (from CDS):

Growing evidence supports the suggestion that the compact high-velocity clouds of Hi (CHVCs) are located throughout the Local Group and continue to fuel galactic evolution. Recent distance estimates to individual objects lie in the range 150-850 kpc, implying an Hi mass range of 105.7->107.2M together with sizes ranging from 2-12kpc, while the average linewidth is 30km/s FWHM. It is natural to ask whether objects of this type would not already have been seen by current blind Hi surveys of the extragalactic sky. We consider the properties of the deepest published surveys of this type and conclude that the sensitivity and coverage have now begun to reveal the high mass end of the distribution (MHI>107M). Achieving detection limits an order of magnitude deeper should finally enable direct study of these systems beyond the Local Group, or definitively rule out their existence.

Abstract Copyright:

Journal keyword(s): ISM: atoms - ISM: clouds - galaxy: evolution - galaxy: formation - galaxies: dwarf - galaxies: Local Group

Simbad objects: 22

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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 - 2020
#notes
1 M 31 G 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 10949 1
2 M 33 GiG 01 33 50.904 +30 39 35.79 6.17 6.27 5.72     ~ 5148 1
3 M 74 G 01 36 41.772 +15 47 00.46 10.52 10.00 9.46 9.16   ~ 1408 1
4 UGC 1561 G 02 04 04.9 +24 12 35   14.7       ~ 29 0
5 NGC 1023 IG 02 40 24.012 +39 03 47.70 10.91 10.35 9.35 7.83   ~ 603 2
6 LEDA 169968 G 02 48 45.6 +23 16 10   18.86       ~ 3 0
7 LEDA 169969 G 02 57 34.5 +23 47 17           ~ 7 0
8 UGC 2905 GiP 03 57 00.1034532309 +16 31 21.441762355   15.7       ~ 36 0
9 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 14874 1
10 ESDO 565-06 G 09 19 30.355 +21 36 12.34           ~ 29 0
11 NGC 3227 GiP 10 23 30.57 +19 51 54.3   12.61 11.79     ~ 1536 2
12 UGC 5672 LSB 10 28 21.105 +22 34 10.93 15.29 14.62 13.98 13.74   ~ 44 0
13 UM 422C EmO 11 19 54 +02 41.6           ~ 4 0
14 HVC 125+41-208 HVC 12 24.0 +75 36           ~ 33 0
15 NAME Vir I ClG 12 26 32.1 +12 43 24   10.00 8.49     ~ 5841 0
16 3C 273 BLL 12 29 06.6996828061 +02 03 08.598846466   13.05 14.830 14.11   ~ 5326 1
17 M 101 GiP 14 03 12.583 +54 20 55.50   8.46 7.86 7.76   ~ 2552 2
18 NAME Circinus Galaxy Sy2 14 13 09.906 -65 20 20.47   10.89 9.84 10.6 10.0 ~ 1009 2
19 NGC 5798 EmG 14 57 37.965 +29 58 06.58   13.5       ~ 58 0
20 NGC 5962 GiP 15 36 31.6808963190 +16 36 27.929023082 12.04 11.98 11.34     ~ 222 1
21 LEDA 3097116 G 17 12 35.0 -64 38 11           ~ 15 0
22 NAME Local Group GrG ~ ~           ~ 7000 0

    Equat.    Gal    SGal    Ecl

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2020.08.09-08:17:49

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