2006A&A...457..121D


C.D.S. - SIMBAD4 rel 1.7 - 2021.03.01CET21:08:10

2006A&A...457..121D - Astronomy and Astrophysics, volume 457, 121-131 (2006/10-1)

Dependence of radio halo properties on star formation activity and galaxy mass.

DAHLEM M., LISENFELD U. and ROSSA J.

Abstract (from CDS):

We investigate the relation between the existence and size of radio halos, which are believed to be created by star formation (SF) related energy input into the interstellar medium, and other galaxy properties, most importantly star formation activity and galaxy mass. Based on radio continuum and Hα observations of a sample of seven late-type spiral galaxies we find a direct, linear correlation of the radial extent of gaseous halos on the size of the actively star-forming parts of the galaxy disks. Data of a larger sample of 22 galaxies indicate that the threshold energy input rate into the disk ISM per unit surface area for the creation of a gaseous halo depends on the mass surface density of the galaxy, in the sense that a higher threshold must be surpassed for galaxies with a higher surface density. Because of the good prediction of the existence of a radio halo from these two parameters, we conclude that they are important, albeit not the only contributors. The compactness of the SF-related energy input is also found to be a relevant factor. Galaxies with relatively compact SF distributions are more likely to have gaseous halos than others with more widespread SF activity. These results quantify the so-called ``break-out'' condition for matter to escape from galaxy disks, as used in all current models of the interstellar medium and first defined by Norman & Ikeuchi (1989ApJ...345..372N).

Abstract Copyright:

Journal keyword(s): ISM: general - galaxies: spirals - galaxies: evolution - galaxies: halos - galaxies: starburst - radio continuum: galaxies

Simbad objects: 23

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Number of rows : 23

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 NGC 253 SyG 00 47 33.134 -25 17 19.68   8.03   6.94 8.1 ~ 2998 2
2 NGC 891 H2G 02 22 32.907 +42 20 53.95 11.08 10.81 9.93 7.86   ~ 1548 2
3 NGC 1055 GiP 02 41 45.233 +00 26 35.45 11.59 11.40 10.59 10.5 10.7 ~ 263 2
4 NGC 1406 EmG 03 39 23.3038688087 -31 19 17.505737604   12.42   11.24 11.9 ~ 106 0
5 NGC 1421 GiG 03 42 29.285 -13 29 16.82   12.38       ~ 181 0
6 NGC 1808 Sy2 05 07 42.343 -37 30 46.98 11.05 10.80 9.94 9.36 10.2 ~ 663 3
7 NGC 2613 EmG 08 33 22.841 -22 58 25.21   11.29 10.42 9.75 10.5 ~ 156 0
8 NGC 2748 GiG 09 13 43.037 +76 28 31.23   11.7       ~ 178 0
9 NGC 3044 G 09 53 40.884 +01 34 46.74   12.7   12.7 12.3 ~ 198 1
10 M 82 IG 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 5424 6
11 NGC 3175 EmG 10 14 42.111 -28 52 19.42   12.14   11.7 11.2 ~ 89 0
12 NGC 3437 EmG 10 52 35.746 +22 56 02.82   12.575 11.961 11.474 10.818 ~ 157 1
13 NGC 3717 EmG 11 31 31.992 -30 18 27.86   12.21   10.56 11.0 ~ 89 0
14 NGC 4244 GiG 12 17 29.659 +37 48 25.60   10.71   9.99   ~ 520 1
15 NGC 4517 AGN 12 32 45.586 +00 06 54.14   11.1   11.1 10.6 ~ 244 1
16 NGC 4565 LIN 12 36 20.804 +25 59 14.61   13.61 12.43     ~ 888 0
17 NGC 4631 GiP 12 42 08.009 +32 32 29.44   9.78 9.19 9.10   ~ 988 2
18 NGC 4666 GiP 12 45 08.676 -00 27 42.88   11.7   11.5 10.7 ~ 337 1
19 NGC 4700 AGN 12 49 08.148 -11 24 35.48   12.7 14.32 12.7 12.5 ~ 87 0
20 NGC 5297 GiP 13 46 23.694 +43 52 19.34   12.3       ~ 146 0
21 NGC 5906 GiG 15 15 53.687 +56 19 43.86   11.4       ~ 698 1
22 NGC 7090 G 21 36 28.865 -54 33 26.35 12.35 11.60 11.05 10.82 11.2 ~ 139 0
23 NGC 7462 GiG 23 02 46.494 -40 50 06.71   12.07   11.27 12.1 ~ 86 0

    Equat.    Gal    SGal    Ecl

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