1997A&A...323..363M


Query : 1997A&A...323..363M

1997A&A...323..363M - Astronomy and Astrophysics, volume 323, 363-373 (1997/7-2)

Bar strength and star formation activity in late-type barred galaxies.

MARTINET L. and FRIEDLI D.

Abstract (from CDS):

With the prime aim of better probing and understanding the intimate link between star formation activity and the presence of bars, a representative sample of 32 non-interacting late-type galaxies with well-determined bar properties has been selected. We show that all the galaxies displaying the highest current star forming activity have both strong and long bars. Conversely not all strong and long bars are intensively creating stars. Except for two cases, strong bars are in fact long as well. Numerical simulations allow to understand these observational facts as well as the connection between bar axis ratio, star formation activity, and chemical abundance gradient: Very young strong bars are first characterized by a raging episode of star formation and two different radial gaseous abundance gradients, one steep in the bar and one shallow in the disc. Then, principally due to gas consumption, galaxies progressively fall back in a more quiescent state with a nearly flat abundance gradient across the whole galaxy. On the contrary, weak bars are unable to trigger significant star formation or to generate flat abundance gradients. The selected galaxies have tentatively been classified in four classes corresponding to main stages of secular evolution scenario.

Abstract Copyright:

Journal keyword(s): galaxies: abundances - galaxies: evolution - galaxies: starburst - galaxies: structure - infrared: galaxies

Simbad objects: 32

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Number of rows : 32
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 NGC 578 G 01 30 28.548 -22 40 01.96   11.72 10.93 10.63 11.6 ~ 164 0
2 NGC 1313 G 03 18 16.046 -66 29 53.74   10.06 10.0 9.40 10.4 ~ 646 2
3 NGC 1365 Sy1 03 33 36.458 -36 08 26.37 10.48 10.08 9.63 8.79 9.7 ~ 1639 2
4 NGC 1637 AGN 04 41 28.1926876152 -02 51 28.667815488   11.4   11.0 11.3 ~ 393 0
5 NGC 1784 GiG 05 05 27.118 -11 52 17.12   11.4   10.92 11.5 ~ 107 0
6 NGC 2997 GiG 09 45 38.7542237472 -31 11 27.345810192   9.97 9.41 8.84 9.9 ~ 399 0
7 NGC 3180 GiG 10 18 16.985 +41 25 27.77   10.4       ~ 668 0
8 NGC 3344 EmG 10 43 31.150 +24 55 19.99 10.38 10.54 9.86 9.71   ~ 369 1
9 NGC 3359 EmG 10 46 36.845 +63 13 25.10 10.83 11.03 10.57     ~ 355 1
10 NGC 3486 Sy2 11 00 23.946 +28 58 29.35 10.89 11.11 10.53 10.40   ~ 333 1
11 NGC 3686 GiP 11 27 43.9717389912 +17 13 27.014601036   11.6       ~ 186 0
12 NGC 3726 GiG 11 33 21.1367545656 +47 01 45.280222428   11.11   10.02   ~ 338 0
13 NGC 3887 G 11 47 04.563 -16 51 16.71   11.4   10.37 10.9 ~ 140 0
14 NGC 3953 GiG 11 53 49.0086582552 +52 19 36.475395312   11.08   9.71   ~ 335 0
15 M 109 GiG 11 57 35.9631479640 +53 22 29.006082336   10.94   9.57   ~ 434 0
16 NGC 4051 Sy1 12 03 09.6101337312 +44 31 52.682601288   11.08 12.92 9.94   ~ 2078 1
17 NGC 4123 AGN 12 08 11.1187718376 +02 52 41.781736956   13.1       ~ 324 2
18 M 61 Sy2 12 21 54.9282582888 +04 28 25.597367184 10.07 10.18 9.65     ~ 936 2
19 NGC 4304 EmG 12 22 12.722 -33 29 03.82   12.41 12.02 11.33 12.0 ~ 67 0
20 M 100 AGN 12 22 54.9299993592 +15 49 20.296257960 10.04 10.05 9.35     ~ 1739 2
21 M 83 SBG 13 37 00.91920 -29 51 56.7400 8.85 8.11 7.52 7.21   ~ 2385 2
22 NGC 5248 GiG 13 37 32.0145074088 +08 53 06.496982448   11.4       ~ 479 0
23 NGC 5390 LIN 13 55 39.9385716624 +40 27 42.380606592   12.81 11.93 10.04   ~ 334 1
24 M 101 GiP 14 03 12.583 +54 20 55.50   8.46 7.86 7.76   ~ 2702 2
25 NGC 5921 G 15 21 56.561 +05 04 13.94   12.7       ~ 267 0
26 NGC 6217 AGN 16 32 39.2100852960 +78 11 53.487076092   14.37 13.88     ~ 290 0
27 NGC 6384 G 17 32 24.2848390896 +07 03 37.531624968   13.2       ~ 295 0
28 NGC 6744 GiG 19 09 46.1335950504 -63 51 26.897079024   9.28 8.25 8.08 9.6 ~ 251 0
29 NGC 6946 H2G 20 34 52.332 +60 09 13.24   10.5       ~ 2372 2
30 NGC 7479 Sy2 23 04 56.6432243448 +12 19 22.357387020 11.74 11.60 10.85 10.47 9.66 ~ 704 2
31 NGC 7678 AGN 23 28 27.8628511800 +22 25 16.568913432   15.3       ~ 190 0
32 NGC 7741 GiP 23 43 54.375 +26 04 32.07 11.70 11.84 11.31     ~ 278 1

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2022.05.24-13:41:18

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