2011MNRAS.415L..31K

Query : 2011MNRAS.415L..31K

2011MNRAS.415L..31K - Mon. Not. R. Astron. Soc., 415, L31-L34 (2011/July-3)

Emission sparks around M 81 and in some dwarf spheroidal galaxies.

KARACHENTSEV I., KAISINA E., KAISIN S. and MAKAROVA L.

Abstract (from CDS):

We use Hα images of three clumps of young stars situated between M 81 and NGC 3077 to estimate their star formation rate. Radial velocities of the clumps measured by us, as well as the velocity of the H II region in the dwarf spheroidal (dSph) galaxy KDG 61, are compatible with their location at the outskirts of a large rotating gaseous disc around M 81. In contrast to KDG 61, the radial velocity of the emission knot in the dSph galaxy DDO 44, +213±25 km/s, tells us that this Hα spark belongs to the dSph galaxy itself. F475W and F814W images of DDO 44 extracted from the Hubble Space Telescope archive reveal eight bluish (B - I < 0.8) stars apparently associated with the Hα knot.

Based on observations made with the 6-m BTA telescope of the Special Astrophysical Observatory, Russian Academy of Sciences.

Based on observations made with the NASA/ESA Hubble Space Telescope, obtained from the data archive at the Space Telescope Science Institute (STScI). The STScI is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555.


Abstract Copyright: 2011 The Authors Monthly Notices of the Royal Astronomical Society2011 RAS

Journal keyword(s): galaxies: dwarf - galaxies: evolution - galaxies: formation - galaxies: individual: DDO 44 - galaxies: stellar content

CDS comments: Clumps I, II, III are [MI2009] Clump I, II, III in SIMBAD.

Simbad objects: 31

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Number of rows : 31
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 147 GiG 00 33 12.120 +48 30 31.46   12.0 9.5     ~ 720 1
2 NAME Andromeda III G 00 35 33.8 +36 29 52     14.4     ~ 309 0
3 NAME Andromeda X G 01 06 33.70 +44 48 15.8     16.6     ~ 125 1
4 NGC 404 LIN 01 09 27.02 +35 43 05.3   12.56 11.73     ~ 511 0
5 UGCA 133 G 07 34 11.5 +66 52 47 16.40 15.48 14.80 14.76   ~ 93 0
6 NGC 2403 AGN 07 36 51.3381434280 +65 36 09.650825640 9.31 8.84 8.38 8.19   ~ 1887 1
7 NAME F8D1 G 09 44 47.1 +67 26 19   14.60 13.85     ~ 80 0
8 NGC 2976 GiG 09 47 15.458 +67 54 58.97 11.77 11.03 10.16 9.51   ~ 712 1
9 LEDA 28529 G 09 53 48.8 +68 58 09   18.89       ~ 97 1
10 NAME M 81-82 Group GrG 09 55 +69.1           ~ 758 0
11 M 81 Sy2 09 55 33.1726556496 +69 03 55.062505368   7.89 6.94     ~ 4725 3
12 M 82 AGN 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 6156 6
13 LEDA 28731 G 09 57 02.7 +68 35 30   15.17       ~ 119 1
14 LEDA 5057029 G 09 57 21.2 +68 42 55           ~ 11 0
15 NAME Arp Loop G 09 57 29.0 +69 16 20           ~ 71 1
16 MCG+12-10-012 AG? 09 57 32.8632 +69 02 50.735 15.19 15.15 14.10 14.12   ~ 327 4
17 LEDA 5056936 G 09 59 33.1 +68 39 25           ~ 16 0
18 LEDA 2807133 GiG 10 00 16.0 +63 11 05           ~ 40 1
19 LEDA 5057030 G 10 00 40.4 +68 39 37           ~ 10 0
20 NGC 3077 GiP 10 03 19.0965510921 +68 44 01.556166166 11.23 10.85 10.14 9.74   ~ 808 0
21 NAME Garland G 10 03 43.1 +68 41 32           ~ 69 2
22 LEDA 29231 G 10 04 40.3 +68 15 20   17.43 16.72     ~ 77 0
23 UGC 5428 AG? 10 05 06.40 +66 33 32.0 17.89 16.82 16.09 15.73   ~ 113 1
24 NAME IKN G 10 08 05.9 +68 23 57           ~ 82 0
25 SMDG J1019526+691119 LSB 10 19 52.9 +69 11 19           ~ 7 0
26 DDO 78 G 10 26 27.9 +67 39 24   15.8       ~ 88 1
27 LEDA 31286 G 10 34 31.9 +66 00 42   16.7       ~ 52 1
28 LEDA 2807143 AG? 11 39 26.909 +60 10 21.36   16.7       ~ 13 0
29 Z 352-57 AG? 13 08 36.295 +78 56 13.93 15.14 14.54 14.08 13.86   ~ 46 0
30 LEDA 2801026 LSB 16 13 47.504 +54 22 08.25     15.9     ~ 115 0
31 NAME Local Group GrG ~ ~           ~ 9325 0

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