2006A&A...448..123S

Query : 2006A&A...448..123S

2006A&A...448..123S - Astronomy and Astrophysics, volume 448123-131 (2006/3-2)

On the neutral gas distribution and kinematics in the dwarf irregular galaxy IC 1613.

SILICH S., LOZINSKAYA T., MOISEEV A., PODORVANYUK N., ROSADO M., BORISSOVA J. and VALDEZ-GUTIERREZ M.

Abstract (from CDS):

We study the neutral hydrogen distribution and kinematics in the Local Group dwarf irregular galaxy IC 1613 and compare them with the ionized gas distribution and stellar content of the galaxy. We discuss several mechanisms which may be responsible for the origin of the observed complicated HI morphology and compare parameters of the most prominent kpc-scale HI structure with the multiple SNe scenario. The observations were performed with the Vary Large Array of NRAO with a linear resolution ∼23pc at the adopted distance of 725kpc and the spectral channel width of 2.57km/s. The numerical calculations have been provided with our 2.5D Lagrangian scheme based on the thin layer approximation. We found that the ISM of the galaxy is highly inhomogeneous and identified a number of intermediate-scale (200pc-300pc in diameter) HI arcs and shells having expansion velocities of 10 to 20km/s. Besides these shells, several giant holes and arc-shaped structures have been revealed, whose radii exceed several hundred parsecs. We found that parameters of the most prominent (MHI=2.8x107M☉) kpc-scale structure and the level of the detected star formation activity are inconsistent with the multiple SNe hypothesis.

Abstract Copyright: ∼

Journal keyword(s): galaxies: irregular - Galaxy: kinematics and dynamics - ISM: structure - ISM: bubbles

Nomenclature: Upper Fig.3: [LMP2003] R (Nos IV-V) added.

Simbad objects: 82

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Number of rows : 82
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 [BKG2004] G60 As* 01 04 26.1 +02 06 56           ~ 2 0
2 [BKG2004] G55 As* 01 04 33.46 +02 08 21.1           ~ 3 0
3 [BKG2004] G53 As* 01 04 41.69 +02 09 17.0           ~ 2 0
4 [BKG2004] G57 As* 01 04 43.40 +02 08 17.1           ~ 3 0
5 [BKG2004] G54 As* 01 04 44.98 +02 09 24.3           ~ 2 0
6 [BKG2004] G52 As* 01 04 45.92 +02 06 28.2           ~ 4 0
7 [BKG2004] G51 As* 01 04 46.28 +02 08 59.1           ~ 3 0
8 [BKG2004] G50 As* 01 04 46.46 +02 07 28.3           ~ 2 0
9 [BKG2004] G58 As* 01 04 46.84 +02 08 17.8           ~ 3 0
10 IC 1613 GiC 01 04 48.4071 +02 07 10.185   10.42 10.01 9.77   ~ 1316 2
11 [BKG2004] G46 As* 01 04 48.86 +02 06 47.1           ~ 3 0
12 [BKG2004] G43 As* 01 04 49.11 +02 06 15.8           ~ 2 0
13 [BKG2004] G56 As* 01 04 50.46 +02 08 14.7           ~ 3 0
14 [BKG2004] G47 As* 01 04 50.69 +02 07 01.4           ~ 2 0
15 [BKG2004] G45 As* 01 04 50.98 +02 04 29.2           ~ 2 0
16 [BKG2004] G49 As* 01 04 51.61 +02 06 23.8           ~ 2 0
17 [BKG2004] G32 As* 01 04 53.04 +02 06 11.0           ~ 2 0
18 [BKG2004] G42 As* 01 04 53.07 +02 04 56.7           ~ 2 0
19 [BKG2004] G1 As* 01 04 53.92 +02 10 08.5           ~ 2 0
20 [BKG2004] G2 As* 01 04 54.11 +02 08 50.7           ~ 3 0
21 [BKG2004] G3 As* 01 04 54.84 +02 10 31.0           ~ 2 0
22 [AM85] IC 1613 2 Pe* 01 04 55.6 +02 05 39   20.5       ~ 7 0
23 [BKG2004] G35 As* 01 04 55.95 +02 05 45.0           ~ 2 0
24 [BKG2004] G33 As* 01 04 57.28 +02 05 15.6           ~ 2 0
25 [BKG2004] G4 As* 01 04 57.74 +02 10 56.4           ~ 2 0
26 [BKG2004] G37 As* 01 04 57.87 +02 04 46.4           ~ 2 0
27 [LMP2003] III sh 01 04 58 +02 09.5           ~ 2 0
28 [BKG2004] G5 As* 01 04 58.04 +02 08 56.8           ~ 2 0
29 [H78] Ass 9 Pe* 01 04 58.4250224477 +02 05 39.596810914   20.7       ~ 9 0
30 [BKG2004] G6 As* 01 04 58.54 +02 08 22.1           ~ 2 0
31 [BKG2004] G41 As* 01 04 58.76 +02 05 25.0           ~ 2 0
32 [BKG2004] G34 As* 01 04 59.08 +02 04 23.5           ~ 2 0
33 [BKG2004] G40 As* 01 04 59.36 +02 05 52.0           ~ 2 0
34 [BKG2004] G8 As* 01 04 59.43 +02 08 40.5           ~ 2 0
35 [BKG2004] G7 As* 01 04 59.49 +02 09 17.8           ~ 8 0
36 [BKG2004] G38 As* 01 05 00.47 +02 05 06.9           ~ 2 0
37 [BKG2004] G36 As* 01 05 00.54 +02 05 17.0           ~ 2 0
38 [BKG2004] G10 As* 01 05 00.59 +02 10 42.8           ~ 5 0
39 [H78] Ass 14 As* 01 05 01 +02 08.5           ~ 6 0
40 [BKG2004] G12 As* 01 05 01.21 +02 08 33.0           ~ 5 0
41 [BKG2004] G13 As* 01 05 01.64 +02 07 31.5           ~ 2 0
42 [BKG2004] G44 As* 01 05 01.78 +02 06 19.1           ~ 3 0
43 [BKG2004] G15 As* 01 05 02.22 +02 08 03.1           ~ 4 0
44 [BKG2004] G14 As* 01 05 02.22 +02 08 44.4           ~ 3 0
45 [BKG2004] G19 As* 01 05 04.17 +02 10 16.8           ~ 2 0
46 [LMP2003] II sh 01 05 04.5 +02 09 19           ~ 2 0
47 [BKG2004] G21 As* 01 05 04.77 +02 09 31.8           ~ 2 0
48 [BKG2004] G20 As* 01 05 04.98 +02 11 55.9           ~ 3 0
49 [BKG2004] G22 As* 01 05 05.16 +02 11 14.3           ~ 2 0
50 [BKG2004] G23 As* 01 05 05.17 +02 08 50.5           ~ 9 0
51 [BKG2004] G24 As* 01 05 06.07 +02 09 01.6           ~ 2 0
52 [BKG2004] G26 As* 01 05 06.26 +02 06 52.7           ~ 3 0
53 [BKG2004] G25 As* 01 05 06.28 +02 09 30.1           ~ 2 0
54 [BKG2004] G27 As* 01 05 06.71 +02 08 39.4           ~ 2 0
55 [BKG2004] G28 As* 01 05 07.59 +02 09 55.2           ~ 2 0
56 [LMP2003] I sh 01 05 10 +02 09.8           ~ 2 0
57 [BKG2004] G29 As* 01 05 10.05 +02 10 24.5           ~ 4 0
58 [BKG2004] G59 As* 01 05 10.41 +02 12 27.3           ~ 2 0
59 [BKG2004] G30 As* 01 05 13.68 +02 08 22.2           ~ 2 0
60 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
61 GSH 242-03+37 HI 07 39 -27.0           ~ 16 0
62 UGC 4305 IG 08 19 04.9864630512 +70 43 13.086910452 12.06 11.72 11.39 11.11   ~ 812 2
63 [MCW88] GS 1b HII ~ ~           ~ 5 0
64 [VRG2001] R1 HII ~ ~           ~ 5 0
65 NAME Local Group GrG ~ ~           ~ 9325 0
66 [LMP2003] V sh ~ ~           ~ 1 0
67 [LMP2003] IV sh ~ ~           ~ 1 0
68 [VRG2001] R15 PoG ~ ~           ~ 3 0
69 [VRG2001] R14 PoG ~ ~           ~ 3 0
70 [VRG2001] R11 PoG ~ ~           ~ 2 0
71 [VRG2001] R10 PoG ~ ~           ~ 2 0
72 [VRG2001] R8 HII ~ ~           ~ 3 0
73 [VRG2001] R3 HII ~ ~           ~ 3 0
74 [VRG2001] R17 PoG ~ ~           ~ 4 0
75 [VRG2001] R16 PoG ~ ~           ~ 4 0
76 [VRG2001] R12 PoG ~ ~           ~ 3 0
77 [VRG2001] R9 HII ~ ~           ~ 4 0
78 [VRG2001] R7 HII ~ ~           ~ 4 0
79 [MCW88] GS 5 HII ~ ~           ~ 4 0
80 [MCW88] GS 4 HII ~ ~           ~ 6 0
81 [MCW88] GS 3 HII ~ ~           ~ 4 0
82 [MCW88] GS 2 HII ~ ~           ~ 5 0

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