2006A&A...455..825C


C.D.S. - SIMBAD4 rel 1.7 - 2021.03.05CET00:03:40

2006A&A...455..825C - Astronomy and Astrophysics, volume 455, 825-834 (2006/9-1)

On the geometrical evolution of the ionized gas in HII galaxies.

CUISINIER F., WESTERA P., TELLES E. and BUSER R.

Abstract (from CDS):

In this paper, we investigate the behaviour of the number of Lyman continuum ionizing photons as compared to the actual number of hydrogen recombinations in HII galaxies. We evaluate the number of ionizing photons from the population synthesis of spectra observed in the visible, extrapolating the spectra to the extreme ultraviolet (EUV), beyond the Lyman limit. We check for possible systematic deviations of the predicted ionizing spectra in the EUV by comparing the ratio of the predicted number of ionizing photons to the number of recombinations, as measured in Hβ, ΔlogQ(H0), with the metallicity. We find that, as far as the number of ionizing photons is concerned, no systematic tendency can be detected. The Hβ equivalent width can be understood as a nebular age indicator, decreasing with age, although the observed Hβ equivalent width can also be affected by the contribution to the continuum by the accumulation of previous, non-ionizing stellar populations. We attribute the increase of ΔlogQ(H0) with the age of the burst to the fact that more and more ionizing photons escape the nebulae when the nebulae get older, because of their increasing, expansion-induced subfragmentation.

Abstract Copyright:

Journal keyword(s): galaxies: starburst - galaxies: ISM - ISM: HII regions - line: formation

Simbad objects: 71

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Number of rows : 71

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 LEDA 1549 H2G 00 24 42.4 +01 44 02 16.58 16.91 16.51 16.21 15.89 ~ 24 0
2 UM 69W EmO 00 48 22.70 +04 05 21.0           ~ 4 0
3 IC 52 H2G 00 48 23.764 +04 05 30.73   15.4       ~ 24 0
4 6dFGS gJ010702.1-383152 H2G 01 07 02.16 -38 31 52.2   16.5       ~ 17 0
5 UGC 749 H2G 01 11 30.912 +01 19 17.09   14.8   14.7 14.7 ~ 45 0
6 6dFGS gJ011957.0-411406 G 01 19 56.998 -41 14 06.04   14.39   14.09   ~ 7 0
7 6dFGS gJ012646.5-003845 H2G 01 26 46.599 -00 38 46.08   17   15.46   ~ 52 0
8 UGC 1240 GiC 01 46 20.67 +04 15 50.1   14.9       ~ 33 0
9 2MASX J02065681+0141525 AGN 02 06 56.8422798813 +01 41 52.720361189   16       ~ 15 0
10 UM 396 EmO 02 07 26.4 +02 56 55   18       ~ 25 0
11 LEDA 8377 H2G 02 11 23.5 +02 20 30   18       ~ 39 0
12 SCHG 0226-390 H2G 02 28 11.40 -38 49 16.0           ~ 12 0
13 NGC 1076 G 02 43 29.256 -14 45 15.67   13.55   13.1 13.0 ~ 39 0
14 SCHG 0306-405 H2G 03 08 42.10 -40 24 30.0           ~ 11 0
15 6dFGS gJ034249.5-403555 H2G 03 42 49.4 -40 35 56 15.90 16.41 15.75 16.05 15.55 ~ 30 0
16 2MASX J04420810-3801108 H2G 04 42 08.110 -38 01 10.88 15.66 17.21 15.80 16.00   ~ 47 0
17 CTS 1006 H2G 04 42 09.70 -45 25 14.0   16.91   16.28   ~ 9 0
18 CTS 1008 H2G 04 51 39.30 -31 52 51.0           ~ 8 0
19 LEDA 75352 H2G 05 29 57.4060 -38 18 07.186           ~ 12 0
20 6dFGS gJ061214.3-384623 G 06 12 14.192 -38 46 23.34   16.44 16.02 15.43   ~ 17 0
21 SCHG 0645-376 H2G 06 46 50.1370 -37 43 21.644     16.84     ~ 26 0
22 Mrk 702 G 08 45 33.662 +16 05 46.88   15.7       ~ 33 0
23 MCG-02-24-011 H2G 09 19 48.4 -12 14 48   14.4   14.5 14.6 ~ 24 0
24 NGC 3049 EmG 09 54 49.651 +09 16 17.90   13.04       ~ 293 1
25 Mrk 711 H2G 09 55 11.3615668325 +13 25 45.978790550   15.5       ~ 33 0
26 ESO 435-20 H2G 09 59 21.226 -28 08 00.04   14.42 14.08 13.33   ~ 78 2
27 NAME Sextans B H2G 10 00 00.8201300945 +05 20 09.572530884 12.77 12.25 11.89 11.71   ~ 479 0
28 NGC 3125 H2G 10 06 33.318 -29 56 07.32 13.03 13.45 13.00 12.50 13.4 ~ 217 1
29 NAME Sex A H2G 10 11 00.5 -04 41 30 12.48 12.13 11.93 11.78   ~ 662 2
30 CTS 1011 H2G 10 19 21.23 -22 08 35.0           ~ 11 0
31 CTS 1013 H2G 10 25 05.9 -19 46 36           ~ 6 0
32 ESO 436-22 H2G 10 27 25.485 -28 47 32.61   15.56 15.68 14.50   ~ 17 0
33 MCG+03-27-042 G 10 27 55.5 +19 29 27   15.5       ~ 14 0
34 CTS 1016 H2G 10 37 30.50 -24 08 25.0           ~ 7 0
35 CTS 1018 H2G 10 38 06.57 -26 21 56.2           ~ 7 0
36 CTS 1019 H2G 10 41 03.69 -22 34 23.7           ~ 6 0
37 Mrk 36 SBG 11 04 58.298 +29 08 16.54   15.50 15.29     ~ 215 0
38 UGC 6578 EmG 11 36 36.636 +00 49 02.61   15.3   14.518 15.1 ~ 117 0
39 Mrk 1304 IG 11 42 12.253 +00 20 03.68   14.16 13.67 13.41 13.03 ~ 160 0
40 ESO 440-14 H2G 11 50 03.2 -28 40 17   15.91   15.06   ~ 28 0
41 2dFGRS TGN378Z115 H2G 11 50 23.8594548628 -00 31 41.086081066   18   16.592   ~ 36 0
42 2dFGRS TGN311Z094 H2G 11 50 36.2 -00 34 05   15.472   14.895 15.5 ~ 52 0
43 LEDA 37102 Sy1 11 51 33.3534243441 -02 22 21.893770899   17       ~ 149 0
44 Mrk 1307 Sy1 11 52 37.19 -02 28 09.9   14.79   14.09 14.9 ~ 160 0
45 Mrk 1318 H2G 12 19 09.840 +03 51 23.34   14.5       ~ 156 0
46 QSO B1220+051 Sy2 12 23 16.5336489582 +04 50 10.123179072   17.82 17.13     ~ 23 0
47 NGC 4385 AGN 12 25 42.8108150606 +00 34 21.279221919   14.63 14.12 13.1 12.8 ~ 253 0
48 FRL 30 G 12 39 15.1491628545 -40 11 10.527389198   16   16.59   ~ 33 0
49 UGC 8091 H2G 12 58 40.1930291852 +14 13 00.737117016 15.24 15.16 14.98 14.81   ~ 443 0
50 UGC 8105 EmG 12 59 57.748 +02 03 01.09   15.5   14.458   ~ 55 0
51 LEDA 169663 G 13 04 15.2 -22 52 53           ~ 10 0
52 6dFGS gJ131742.7-010005 LSB 13 17 43.1869172198 -01 00 03.815472522   16.0   15.7 16.2 ~ 42 0
53 2MASX J13214999-2228315 H2G 13 21 49.999 -22 28 31.58           ~ 8 0
54 NGC 5257 H2G 13 39 52.273 +00 50 22.48   13.7 12.99     ~ 186 0
55 APG 240 PaG 13 39 55.06 +00 50 06.4   12.6       ~ 149 0
56 2MASX J13482230-4221138 H2G 13 48 22.3004219126 -42 21 14.102903220   17       ~ 37 0
57 LEDA 871469 H2G 13 49 44.7 -18 11 08           ~ 9 0
58 CTS 1034 H2G 14 19 32.3 -27 34 45           ~ 8 0
59 ESO 513-11 PaG 15 00 27.10 -26 26 57.0   15.85       ~ 52 0
60 ESO 338-4 IG 19 27 58.338 -41 34 30.81   13.55 13.21 13.14 13.43 ~ 212 1
61 2MASX J19405863-4215451 H2G 19 40 58.6466391241 -42 15 44.879632698   15.78   14.86 14.9 ~ 21 0
62 NGC 7165 H2G 21 59 26.074 -16 30 44.63   14.35 13.54     ~ 21 0
63 2MASX J22035632-1535597 H2G 22 03 56.3228446610 -15 35 59.582009550   15.44 14.61     ~ 13 0
64 LEDA 67984 G 22 04 30.1 -66 06 56   15.84   15.02   ~ 14 0
65 IC 5154 AGN 22 04 30.2725422136 -66 06 44.906345742   15.84   15.02   ~ 18 0
66 ESO 533-14 H2G 22 19 50.6341761708 -26 20 29.679881577   13.75   12.95   ~ 23 0
67 ESO 289-37 H2G 22 33 20.039 -44 32 59.89   14.73   13.75   ~ 12 0
68 NGC 7323 H2G 22 36 53.5833168764 +19 08 38.009724551   14.0       ~ 35 0
69 NGC 7667 H2G 23 24 22.839 -00 06 30.16 13.52 14.47 14.05 13.89 13.58 ~ 69 1
70 SDSS J232423.51-000513.6 G 23 24 23.511 -00 05 13.65           ~ 4 0
71 Mrk 542 H2G 23 56 59.619 -02 05 01.98   15.4       ~ 44 0

    Equat.    Gal    SGal    Ecl

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2021.03.05-00:03:40

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