2007A&A...476...89L

Query : 2007A&A...476...89L

2007A&A...476...89L - Astronomy and Astrophysics, volume 47689-96 (2007/12-2)

Narrow-band Hβ images of star-formation regions in HII galaxies.

LAGOS P., TELLES E. and MELNICK J.

Abstract (from CDS):

Create a catalog of images of HII galaxies and their individual star-formation regions in order to study the distribution of the gas emission and their underlying stellar continuum. We have used Hβ narrow-band images of 43 selected HII galaxies obtained at ESO NTT 3.58m telescope using the SUSI2 camera. Surface photometric Hβ fluxes and equivalent widths for all objects and star-formation regions are presented in this catalog. A myriad of filamentary structure were found in the pure Hβ emission-line or continuum-subtracted images, probably attributed to expanding shells as a consequence of the star-formation activity. Our results indicate that the number of regions with high Hβ equivalent width or young regions increase with the instrumental resolution, showing that the instrumental resolution is a bias to determine the cluster ages. Therefore, we showed that some of the observed giant HII regions may have been formed by ensembles of unresolved star forming regions or candidates to host Super Star Clusters. Pure Hβ emission-line images, continuum contours and EW(Hβ) maps showing the morphology of the gaseous and stellar emission in HII galaxies and their individual star-formation regions were obtained. All calibrated continuum and Hβ emission line fluxes and the derived Hβ equivalent width images are available in fits format from http://www.on.br/astro/etelles/HIIgalaxies/Hbeta/ .

Abstract Copyright: ∼

Journal keyword(s): catalogs - galaxies: dwarf - galaxies: photometry - galaxies: ISM - galaxies: fundamental parameters

VizieR on-line data: <Available at CDS (J/A+A/476/89): table1.dat table3.dat>

Nomenclature: Figs 4, Table 3: [LTM2007] Tol HHMM+DDd N, [LTM2007] Tol 1457-262aa N, [LTM2007] Mrk NNNN N, [LTM2007] UM NNN N, [LTM2007] SC98b 13191-2212 N, N=76.

Simbad objects: 51

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Number of rows : 51
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 1569 rG 04 30 49.186 +64 50 52.52 11.72 11.86 11.03     ~ 1297 3
2 NGC 1705 Sy2 04 54 13.4661493464 -53 21 39.471592428 12.32 12.96 12.56 12.58 12.9 ~ 692 1
3 LEDA 75260 H2G 05 07 00.8097 -38 38 57.570           ~ 8 0
4 LEDA 75352 H2G 05 29 57.4060 -38 18 07.186           ~ 13 0
5 UGCA 116 AGN 05 55 42.645 +03 23 32.23 10.74 11.68 11.46   11.82 ~ 561 0
6 LEDA 75555 AG? 06 12 14.192 -38 46 23.34   16.44 16.02 15.43   ~ 20 0
7 SCHG 0633-415 H2G 06 35 09.70 -41 33 30.0           ~ 28 0
8 SCHG 0645-376 H2G 06 46 50.1370 -37 43 21.644     16.84     ~ 26 0
9 Z 60-34 AG? 08 42 35.090 +10 35 06.21   14.6       ~ 23 0
10 SDSS J084236.57+103313.9 EmG 08 42 36.5888720088 +10 33 13.911978708           ~ 22 0
11 M 82 AGN 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 6156 6
12 ESO 435-20 rG 09 59 21.226 -28 08 00.04   14.42 14.08 13.33   ~ 84 2
13 NGC 3125 AGN 10 06 33.318 -29 56 07.32 13.03 13.45 13.00 12.50 13.4 ~ 253 2
14 CTS 1011 H2G 10 19 21.23 -22 08 35.0           ~ 12 0
15 CTS 1013 H2G 10 25 05.9 -19 46 36           ~ 6 0
16 ESO 436-22 Sy1 10 27 25.485 -28 47 32.61   15.56 15.68 14.50   ~ 20 0
17 CTS 1016 H2G 10 37 30.50 -24 08 25.0           ~ 7 0
18 CTS 1017 H2G 10 37 40.41 -25 57 59.6           ~ 7 0
19 EC 10453-2041 EmG 10 47 44.35 -20 57 48.6   16.89 15.91     ~ 18 0
20 CTS 1022 H2G 10 48 40.20 -19 26 36.0           ~ 8 0
21 Z 38-54 EmG 10 56 09.1162376616 +06 10 22.393310304   14.8       ~ 56 0
22 MCG+05-26-046 SBG 11 04 58.298 +29 08 16.54   15.5 15.29     ~ 228 0
23 Z 12-40 EmG 11 36 36.636 +00 49 02.61   15.3   14.518 15.1 ~ 124 0
24 ESO 440-14 H2G 11 50 03.20 -28 40 17.1   15.91   15.06   ~ 31 0
25 2dFGRS TGN378Z115 H2G 11 50 23.8586763672 -00 31 41.089748556   18   16.592   ~ 42 0
26 Z 12-105 H2G 11 50 36.30 -00 34 03.3   15.472   14.895 15.5 ~ 58 0
27 LEDA 37102 Sy1 11 51 33.3537570144 -02 22 21.893502576   17       ~ 179 0
28 Z 12-111 Sy1 11 52 37.19 -02 28 09.9   14.79   14.09 14.9 ~ 184 0
29 2dFGRS TGN311Z206 Sy1 11 52 47.5102092912 -00 40 07.665791232   18   17.188   ~ 46 0
30 NGC 4038 EmG 12 01 53.002 -18 52 03.32   10.91   9.74 11.0 ~ 1364 1
31 NAME Antennae IG 12 01 53.170 -18 52 37.92           ~ 1749 0
32 NGC 4039 GiP 12 01 53.51 -18 53 10.3   11.08   9.77   ~ 1173 1
33 Mrk 1313 Sy1 12 12 14.7430689744 +00 04 20.530354908   17.56 17.40     ~ 79 0
34 Z 42-8 H2G 12 19 09.840 +03 51 23.34   14.5       ~ 168 0
35 ESO 380-27 AGN 12 25 46.95 -36 14 00.7   17.47   16.52   ~ 104 1
36 LEDA 169663 AG? 13 04 15.20 -22 52 53.0           ~ 12 0
37 Z 16-45 LSB 13 17 43.1868710184 -01 00 03.820032216   16.0   15.7 16.2 ~ 45 0
38 2MASX J13214999-2228315 H2G 13 21 49.999 -22 28 31.58           ~ 8 0
39 LEDA 169725 H2G 13 25 32.99664 -26 02 49.0056   15.39   16.61 16.77 ~ 9 0
40 IC 4249 EmG 13 27 06.5667095424 -27 57 23.385136788   14.48 14.57 13.52 13.87 ~ 86 0
41 ESO 383-43 AG? 13 37 08.3 -32 55 32   15.81   15.79 17.02 ~ 30 0
42 2MASX J13482230-4221138 H2G 13 48 22.2996191952 -42 21 14.086526796   17       ~ 38 0
43 CTS 1034 H2G 14 19 32.3 -27 34 45           ~ 8 0
44 Z 193-4 H2G 14 50 56.495 +35 34 18.27   14.5 14.83     ~ 212 0
45 CTS 1035 H2G 14 57 19.69 -22 23 35.4           ~ 7 0
46 ESO 513-11 PaG 15 00 27.10 -26 26 57.0   15.85       ~ 54 0
47 ESO 338-4 EmG 19 27 58.338 -41 34 30.81   13.55 13.21 13.14 13.43 ~ 253 1
48 LEDA 84914 EmG 19 40 58.6472202096 -42 15 44.885332440   15.78   14.86 14.9 ~ 27 0
49 LEDA 84918 H2G 20 23 06.21 -40 20 32.9           ~ 9 0
50 SCHG 2041-394 G 20 44 50.8 -39 13 16           ~ 5 0
51 NGC 7252 AGN 22 20 44.7748209648 -24 40 41.909518200 12.26 12.46 12.06 11.57   ~ 720 1

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