2005A&A...436..469C

Query : 2005A&A...436..469C

2005A&A...436..469C - Astronomy and Astrophysics, volume 436469-478 (2005/6-3)

A Virgo high-resolution Hα kinematical survey. I. NGC 4438.

CHEMIN L., CAYATTE V., BALKOWSKI C., AMRAM P., CARIGNAN C., BOSELLI A., ADAMI C., MARCELIN M., GARRIDO O., HERNANDEZ O. and BOULESTEIX J.

Abstract (from CDS):

New Hα emission-line observations of the Virgo cluster galaxy NGC 4438 are presented. Fabry-Perot interferometry data at an effective angular resolution of ∼2'' are used to map the kinematics of the ionized gas in the galaxy. For the first time we obtain a velocity field covering a large area in NGC 4438, much larger than that deduced from previous HI and CO maps. The kinematics of the extended, low surface brightness Hα filaments to the West of the galactic disk is discussed. We report on the discovery of a northern Hα structure which is clumpier than the other filaments. Evidence for multiple spectral components through the data-cube are presented in a nuclear shell and in the approaching half of the disk. The role of VCC 1040, a dwarf elliptical galaxy located to the South of NGC 4438, is presented to investigate the origin of a small-scale stellar tail of NGC 4438. It could be due to a minor tidal interaction between the two galaxies.

Abstract Copyright: ∼

Journal keyword(s): galaxies: clusters: individual: NGC 4438 - galaxies: interactions - galaxies: kinematics and dynamics

Nomenclature: [KRP95] Filament Na (Nos 0, 3b, 3c) added.

CDS comments: Fig.7: tail T1 = NAME NGC 4438 STELLAR TAIL

Simbad objects: 25

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Number of rows : 25
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 NGC 3079 Sy2 10 01 57.8789863992 +55 40 47.449758324 11.57 11.54 10.86     ~ 1476 3
2 NGC 4388 Sy2 12 25 46.820 +12 39 43.45 11.91 11.76 11.02     ~ 1433 2
3 M 86 GiG 12 26 11.814 +12 56 45.49 10.32 9.83 8.90   7.50 ~ 1126 1
4 NGC 4406B GiC 12 26 15.18 +12 57 49.8   16.7 14.32   12.70 ~ 38 0
5 [KRP95] Filament 3b PoG 12 27 40.5 +12 59 10           ~ 1 0
6 [KRP95] Filament 2 PoG 12 27 40.5 +13 00 20           ~ 4 0
7 NGC 4435 GiG 12 27 40.503 +13 04 44.48 12.23 11.74 10.80     ~ 474 2
8 [KRP95] Filament 3 PoG 12 27 41 +12 59.5           ~ 3 0
9 [KRP95] Filament 3a PoG 12 27 41 +12 59.7           ~ 2 0
10 [KRP95] Filament 1 PoG 12 27 41.6 +13 01 10           ~ 4 0
11 [KRP95] Filament 4 PoG 12 27 42 +12 59.0           ~ 4 0
12 NAME NGC 4438 Stellar Tail PoG 12 27.7 +13 00           ~ 1 0
13 2MASXI J1227422+125935 G 12 27 42.3 +12 59 36           ~ 1 0
14 [KRP95] Filament 3c PoG 12 27 43 +12 59.5           ~ 1 0
15 [KRP95] Filament 0 PoG 12 27 44.4 +13 01 36           ~ 2 0
16 NVSS B122510+131522 rG 12 27 44.5245 +12 59 01.260           ~ 19 0
17 NGC 4438 LIN 12 27 45.6705493536 +13 00 31.708096380 11.37 11.02 10.17     ~ 668 2
18 M 49 Sy2 12 29 46.8 +08 00 01   13.21 12.17     ~ 2174 2
19 Z 42-135 LSB 12 30 00.350 +07 55 47.44   15.4       ~ 140 0
20 NAME Virgo Cluster ClG 12 30 47.8 +12 23 07           ~ 7107 0
21 M 87 AGN 12 30 49.42338414 +12 23 28.0436859 10.16 9.59 8.63   7.49 ~ 7815 3
22 NGC 4522 GiG 12 33 39.657 +09 10 29.54   13.6       ~ 396 0
23 NGC 4654 H2G 12 43 56.638 +13 07 34.86   11.8       ~ 600 1
24 LEDA 43211 LSB 12 47 59.92392 +10 58 14.8966   21       ~ 83 0
25 NGC 4694 AGN 12 48 15.091 +10 59 01.05   13.93 13.36     ~ 302 0

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