2011A&A...526A.118H


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.04CEST14:10:27

2011A&A...526A.118H - Astronomy and Astrophysics, volume 526A, 118-118 (2011/2-1)

The Westerbork Hydrogen Accretion in LOcal GAlaxieS (HALOGAS) survey. I. Survey description and pilot observations.

HEALD G., JOZSA G., SERRA P., ZSCHAECHNER L., RAND R., FRATERNALI F., OOSTERLOO T., WALTERBOS R., JUETTE E. and GENTILE G.

Abstract (from CDS):

We introduce a new, very deep neutral hydrogen (HI) survey being performed with the Westerbork Synthesis Radio Telescope (WSRT). The Westerbork Hydrogen Accretion in LOcal GAlaxieS (HALOGAS) Survey is producing an archive of some of the most sensitive HI observations available, on the angular scales which are most useful for studying faint, diffuse gas in and around nearby galaxies. The survey data are being used to perform careful modeling of the galaxies, characterizing their gas content, morphology, and kinematics, with the primary goal of revealing the global characteristics of cold gas accretion onto spiral galaxies in the local Universe. In this paper, we describe the survey sample selection, the data acquisition, reduction, and analysis, and present the data products obtained during our pilot program, which consists of UGC 2082, NGC 672, NGC 925, and NGC 4565. The observations reveal a first glimpse of the picture that the full HALOGAS project aims to illuminate: the properties of accreting HI in different types of spirals, and across a range of galactic environments. None of the pilot survey galaxies hosts an HI halo of the scale of NGC 891, but all show varying indications of halo gas features. We compare the properties of detected features in the pilot survey galaxies with their global characteristics, and discuss similarities and differences with NGC 891 and NGC 2403.

Abstract Copyright:

Journal keyword(s): galaxies: spiral - galaxies: evolution - galaxies: ISM - galaxies: halos - galaxies: kinematics and dynamics

Errata: + corrigendum vol. 544, p. C1 (2012)

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 - 2020
#notes
1 M 31 G 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 10902 1
2 IC 1727 GiP 01 47 29.890 +27 20 00.06   12.54 11.98 11.77   ~ 176 0
3 NGC 672 GiP 01 47 54.4762706495 +27 25 57.994773107 12.04 11.60 11.09 10.81   ~ 251 0
4 NGC 891 H2G 02 22 32.907 +42 20 53.95 11.08 10.81 9.93 7.86   ~ 1520 2
5 NGC 925 H2G 02 27 16.913 +33 34 43.97   10.69 10.12 9.55   ~ 693 1
6 NGC 949 GiG 02 30 48.650 +37 08 12.46   12.667 11.975 11.490 10.790 ~ 138 0
7 UGC 2082 GiG 02 36 16.152 +25 25 25.75   14.00       ~ 100 0
8 NGC 1003 GiG 02 39 16.893 +40 52 20.25   12.1   10.83   ~ 161 0
9 NGC 2403 AGN 07 36 51.396 +65 36 09.17 9.31 8.84 8.38 8.19   ~ 1606 1
10 IC 2233 LSB 08 13 58.909 +45 44 31.74 12.87 13.41 12.63 12.80   ~ 196 1
11 NGC 2541 GiG 08 14 40.1104536348 +49 03 42.058472450 12.03 12.26 11.80     ~ 276 1
12 NGC 3044 G 09 53 40.884 +01 34 46.74   12.7   12.7 12.3 ~ 194 1
13 NGC 3198 EmG 10 19 54.990 +45 32 58.88 10.83 10.87 10.33     ~ 813 1
14 NGC 4062 EmG 12 04 03.8088012817 +31 53 44.492255334   11.90 11.21 10.62 10.03 ~ 237 0
15 NGC 4244 GiG 12 17 29.659 +37 48 25.60   10.71   9.99   ~ 512 1
16 UGC 7321 EmG 12 17 34.021 +22 32 23.35   14.07   13.21   ~ 225 0
17 M 106 Sy2 12 18 57.620 +47 18 13.39   9.14 8.41 8.11   ~ 2113 3
18 NGC 4274 LIN 12 19 50.665 +29 36 52.92 11.78 11.34 10.41     ~ 225 1
19 NAME Coma I Group GrG 12 22 19.4 +29 53 47           ~ 99 0
20 NGC 4395 Sy2 12 25 48.8639154223 +33 32 48.694684028 10.84 10.54 10.11 9.98   ~ 993 1
21 NGC 4414 GiG 12 26 27.089 +31 13 24.76 11.12 10.96 10.12     ~ 512 2
22 NGC 4448 H2G 12 28 15.428 +28 37 13.08   11.9       ~ 173 0
23 NGC 4562 GiG 12 35 34.5667925418 +25 50 58.393117212   14.6       ~ 70 0
24 NGC 4559 H2G 12 35 57.6399424117 +27 57 35.859639262   10.46 10.01     ~ 532 1
25 IC 3571 ? 12 36.3 +26 05           ~ 10 0
26 NGC 4565 LIN 12 36 20.804 +25 59 14.61   13.61 12.43     ~ 868 0
27 UGC 7774 LSB 12 36 22.716 +40 00 18.72   15.2       ~ 76 0
28 NGC 4631 GiP 12 42 08.009 +32 32 29.44   9.78 9.19 9.10   ~ 969 2
29 NGC 5023 EmG 13 12 11.799 +44 02 16.88   13.2       ~ 217 0
30 M 63 LIN 13 15 49.2738527699 +42 01 45.726078017   9.34 8.59 8.35   ~ 1055 2
31 NGC 5229 LSB 13 34 02.831 +47 54 55.68   14.6       ~ 112 0
32 NGC 5585 GiG 14 19 48.204 +56 43 44.58   11.73 11.216 11.12 10.123 ~ 380 0
33 NGC 5746 GiP 14 44 56.005 +01 57 17.06   12.3       ~ 323 0
34 NGC 6946 H2G 20 34 52.332 +60 09 13.24   10.5       ~ 2234 2

    Equat.    Gal    SGal    Ecl

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2020.07.04-14:10:27

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