2014A&A...563A..27L


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.14CEST00:08:16

2014A&A...563A..27L - Astronomy and Astrophysics, volume 563A, 27-27 (2014/3-1)

Evolution of dwarf galaxies: a dynamical perspective.

LELLI F., FRATERNALI F. and VERHEIJEN M.

Abstract (from CDS):

For a rotating galaxy, the inner circular-velocity gradient dRV(0) provides a direct estimate of the central dynamical mass density, including gas, stars, and dark matter. We consider 60 low-mass galaxies with high-quality HI and/or stellar rotation curves (including starbursting dwarfs, irregulars, and spheroidals), and estimate dRV(0) as VRd/Rd, where Rd is the galaxy scale length. For gas-rich dwarfs, we find that VRd/Rd correlates with the central surface brightness µ0, the mean atomic gas surface density Σgas, and the star formation rate surface density ΣSFR. Starbursting galaxies, such as blue compact dwarfs (BCDs), generally have higher values of VRd/Rd than dwarf irregulars, suggesting that the starburst is closely related to the inner shape of the potential well. There are, however, some ``compact'' irregulars with values of VRd/Rd similar to BCDs. Unless a redistribution of mass takes place, BCDs must evolve into compact irregulars. Rotating spheroidals in the Virgo cluster follow the same correlation between VRd/Rd and µ0 as gas-rich dwarfs. They have values of VRd/Rd comparable to those of BCDs and compact irregulars, pointing to evolutionary links between these types of dwarfs. Finally, we find that, as for spiral galaxies and massive starbursts, the star-formation activity in dwarfs can be parametrized as ΣSFR=ε*Σgasorb, where τorb is the orbital time and ε≃0.02.

Abstract Copyright:

Journal keyword(s): galaxies: dwarf - galaxies: starburst - galaxies: irregular - galaxies: evolution - galaxies: star formation - galaxies: kinematics and dynamics

Simbad objects: 67

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Number of rows : 67

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 NAME WLM Galaxy G 00 01 57.9 -15 27 50   11.50 11.10 10.93   ~ 575 2
2 UGC 731 G 01 10 44.00 +49 36 07.9   17       ~ 82 0
3 NGC 1156 rG 02 59 42.8526900556 +25 14 28.350265697 12.13 12.32 11.74     ~ 279 1
4 NGC 1705 SBG 04 54 13.500 -53 21 39.82 12.32 12.96 12.56 12.58 12.9 ~ 596 1
5 UGC 3371 G 05 56 35.98 +75 19 01.9   17       ~ 81 0
6 NGC 2337 G 07 10 13.6369267282 +44 27 26.738269783   13.1       ~ 71 0
7 UGC 3817 G 07 22 44.48 +45 06 30.7   17       ~ 39 0
8 NGC 2366 H2G 07 28 51.85 +69 12 31.1 12.25 11.86 11.39 11.33   ~ 703 0
9 UGC 3966 G 07 41 25.777 +40 06 46.05   16.0       ~ 100 0
10 UGC 4173 G 08 07 10.05 +80 07 36.5   15.7       ~ 49 0
11 UGC 4305 IG 08 19 04.9878269182 +70 43 13.025604473 12.06 11.72 11.39 11.11   ~ 690 2
12 NGC 2552 G 08 19 20.5356353358 +50 00 34.586263623 13.44 13.00 12.56     ~ 229 1
13 UGC 4483 GiG 08 37 03.29 +69 46 29.2 15.70 15.46 14.98 14.89   ~ 265 0
14 UGC 4499 GiP 08 37 41.489 +51 39 08.58   13.50       ~ 116 1
15 UGC 4543 G 08 43 21.8472265854 +45 44 09.598165993   15.1       ~ 53 0
16 NGC 2915 G 09 26 11.532 -76 37 34.75 13.13 12.93 12.68 11.90 12.8 ~ 300 2
17 Mrk 116 PaG 09 34 02.1 +55 14 25           ~ 997 1
18 UGC 5272 G 09 50 22.769 +31 29 17.80   14.48   14.10   ~ 167 0
19 NGC 3104 IG 10 03 57.185 +40 45 41.43   14.2       ~ 104 0
20 NGC 3274 EmG 10 32 17.2228402368 +27 40 07.160374345   13.30   12.77   ~ 199 0
21 NAME Spider G 10 42 42.787 +34 26 57.39   13.31 13.09 12.84 12.85 ~ 125 0
22 UGC 5846 G 10 44 28.536 +60 22 01.39   15.4       ~ 45 0
23 UGC 5918 GiG 10 49 36.412 +65 32 01.07 15.55 15.27 14.79 14.55   ~ 124 0
24 UGC 6399 G 11 23 23.2220055506 +50 53 33.592165266   14.9       ~ 87 0
25 UGC 6446 GiC 11 26 40.4634006889 +53 44 47.988050815   14.5       ~ 131 0
26 UGC 6955 GiG 11 58 29.804 +38 04 34.80   15.2       ~ 70 0
27 NGC 4068 G 12 04 03.265 +52 35 26.05   13.29   12.77   ~ 150 0
28 NGC 4190 LSB 12 13 44.1699744302 +36 37 53.391666031 13.88 13.40 13.25 12.86   ~ 182 0
29 NGC 4204 GiC 12 15 14.359 +20 39 32.68   14.3       ~ 114 0
30 NGC 4228 SBG 12 15 39.174 +36 19 36.80 10.63 10.30 9.93 9.74   ~ 864 1
31 IC 3081 G 12 16 09.0681857382 +12 41 28.623250397   15.60       ~ 25 0
32 NGC 4242 GiG 12 17 30.1848324010 +45 37 09.511603113   11.37 10.83     ~ 225 1
33 UGC 7399 A GiG 12 20 48.757 +17 29 14.14   15.1       ~ 83 0
34 UGC 7436 GiP 12 22 19.530 +14 45 38.11   15.2       ~ 116 0
35 NGC 4395 Sy2 12 25 48.8639154223 +33 32 48.694684028 10.84 10.54 10.11 9.98   ~ 994 1
36 Mrk 209 bCG 12 26 16.02 +48 29 36.6   15.3       ~ 301 0
37 NAME Vir I ClG 12 26 32.1 +12 43 24   10.00 8.49     ~ 5825 0
38 UGC 7559 GiP 12 27 05.566 +37 08 30.39   14.19   13.55   ~ 167 0
39 IC 3369 GiG 12 27 16.9356456625 +16 01 28.142966991   15.1       ~ 42 0
40 NGC 4436 GiP 12 27 41.2351234585 +12 18 57.204566597 14.20 13.91 12.98     ~ 113 1
41 UGC 7577 GiG 12 27 41.8803124881 +43 29 58.140216428 13.75 13.10 12.7 12.33   ~ 226 0
42 IC 3393 GiG 12 28 41.7049079126 +12 54 57.276857130   14.85 14.24   13.19 ~ 97 1
43 NGC 4455 EmG 12 28 44.1266093618 +22 49 13.542101138   15.5       ~ 172 0
44 UGC 7690 LSB 12 32 26.893 +42 42 14.84   13.7       ~ 93 0
45 IC 3687 GiG 12 42 15.1536392607 +38 30 05.849182746   15.5       ~ 118 0
46 UGC 7916 GiC 12 44 24.881 +34 23 03.33   15.0       ~ 55 0
47 IC 3735 G 12 45 20.376 +13 41 33.74   15.1       ~ 77 0
48 IC 3779 GiG 12 47 20.281 +12 09 59.58   15.5     13.3 ~ 73 0
49 NGC 4707 G 12 48 21.666 +51 09 53.81   15.2       ~ 90 0
50 UGC 8320 G 13 14 27.997 +45 55 11.14 13.63 13.26 13.02 12.81   ~ 235 0
51 NGC 5204 LSB 13 29 36.508 +58 25 07.43   11.84   11.37   ~ 421 0
52 UGC 8837 G 13 54 45.602 +53 54 20.06   14.2       ~ 180 0
53 UGC 9128 G 14 15 56.70 +23 03 16.2 15.40 14.77 14.41 14.32   ~ 255 0
54 MCG+07-29-060 QSO 14 17 01.716 +43 30 13.52   15.6       ~ 153 0
55 UGC 9211 G 14 22 32.1695540157 +45 23 01.929995337   15.7       ~ 70 0
56 UGC 9992 G 15 41 48.01 +67 15 14.0 15.71 15.22 14.81 14.44   ~ 67 0
57 UGC 10310 IG 16 16 17.9040378078 +47 02 43.158504118   14.9       ~ 123 0
58 NAME Local Void vid 18 38 +18.0           ~ 155 0
59 NGC 6789 G 19 16 41.169 +63 58 23.90   13.76       ~ 98 1
60 NGC 6822 G 19 44 56.199 -14 47 51.29   18 8.1     ~ 1430 0
61 UGC 11557 G 20 24 00.6832138248 +60 11 41.410920518   14.5       ~ 60 0
62 NGC 6946 H2G 20 34 52.332 +60 09 13.24   10.5       ~ 2235 2
63 UGC 11707 G 21 14 31.75 +26 44 04.5   15.6       ~ 57 0
64 UGC 12060 GiG 22 30 33.7 +33 49 15   15.5       ~ 62 0
65 UGC 12632 GiG 23 29 58.78 +40 59 25.2   15.7       ~ 86 0
66 UGC 12732 GiP 23 40 39.96 +26 14 09.8   14.5       ~ 117 0
67 NAME Local Group GrG ~ ~           ~ 6973 0

    Equat.    Gal    SGal    Ecl

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2020.07.14-00:08:16

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