2000A&AS..142..399V


C.D.S. - SIMBAD4 rel 1.7 - 2021.05.17CEST17:06:20

2000A&AS..142..399V - Astron. Astrophys., Suppl. Ser., 142, 399-416 (2000/March-2)

Surface photometry of emission-line galaxies in low density regions.

VENNIK J., HOPP U. and POPESCU C.C.

Abstract (from CDS):

Detailed B and R surface photometry is performed for 139 faint emission-line galaxies (ELGs) and for 2 non-ELGs. They are a subsample of the ELG sample selected by Popescu et al. (1996A&AS..116...43P, 1998A&AS..133...13P) towards four nearby voids. We derived the isophotal and integral photometric parameters and radial surface brightness (SB) profiles. Our sample consists mostly of low luminosity (<MB>med=-17.7), small linear size (<d25>med=6.0kpc) (H0=75km/s/Mpc) and blue (<B-R>med=0.93) galaxies. About 83% of the studied ELGs belong to the class of Blue Compact Galaxies (BCGs); others are luminous Starburst Nucleus Galaxies (SBNs) and a few interacting pairs. 72% of the ELGs possess a single dominant HII region, while the remaining 28% show multiple knots. Furthermore 71% of the ELGs show regular outer isophotes, and the remaining 29% reveal disturbed outer morphologies. We performed the SB profile decomposition by means of disentangling the underlying stellar disk and the excess light above the exponential disk. We classified the profiles into 5 types: pure disk profiles (21% of studied 139 ELGs); profiles that show both disk and bulge/nucleus/HII knot components (37%); profiles that have central light depression (13%); non-disky (concave) profiles (7%); and almost unresolved (quasi-stellar) images and stellar SB profiles (22%). Popescu et al. (1997A&A...325..881P) found that most of the studied ELGs follow the spatial distribution of ``normal'' galaxies from the CfA Redshift Survey. 15 ELGs and 1 non-ELG were classified as being well isolated and are distributed within nearby (z≤0.033) voids. We found that these isolated ELGs are almost all dwarf galaxies with -18.4<MB←12.7, they show similar luminosities and colours as the nearby non-isolated ELGs. For 8 of 15 isolated ELGs an underlying LSBG has been detected. The underlying disks of isolated ELGs tend to be larger and of lower SB, than the disks of non-isolated ELGs (of the same total blue flux).

Abstract Copyright:

Journal keyword(s): galaxies: photometry - galaxies: fundamental parameters - galaxies: structure - cosmology: large scale structure of Universe

VizieR on-line data: <Available at CDS (J/A+AS/142/399): table4.dat table5.dat table6.dat table7.dat>

Status at CDS : All or part of tables of objects could be ingested in SIMBAD with priority 2.

Simbad objects: 18

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Number of rows : 18

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 2264 OpC 06 40 58 +09 53.7           ~ 1627 0
2 NGC 2419 GlC 07 38 08.51 +38 52 54.9     10.05     ~ 844 0
3 NGC 4147 GlC 12 10 06.149 +18 32 31.78   11.45 10.74     ~ 511 0
4 HZ 21 WD* 12 13 56.2639830406 +32 56 31.359805342 13.125 14.361 14.688 14.837 15.038 DO1 136 0
5 2MASX J12390403+3920437 H2G 12 39 04.039 +39 20 43.42   18.7       ~ 24 0
6 HS 1240+3721 G 12 42 +37.0   17.9       ~ 3 0
7 UGC 8303 GiP 13 13 17.89 +36 12 51.2   13.73   12.96   ~ 82 1
8 Mrk 450 H2G 13 14 48.796 +34 52 53.18   14.9       ~ 79 0
9 HZ 44 HS* 13 23 35.2632775627 +36 07 59.545982652 10.186 11.42 11.65 12.00 11.995 sdBN0VIIHe28 379 0
10 2MASX J13274974+3240342 H2G 13 27 49.746 +32 40 34.24   19.2       ~ 10 0
11 2MASX J13333045+3851091 SBG 13 33 30.447 +38 51 09.33   16.5       ~ 8 0
12 2MASX J13382962+3059084 H2G 13 38 29.707 +30 59 12.85   15.7       ~ 17 0
13 2MASX J13513107+3927163 EmG 13 51 31.077 +39 27 16.32   16.7       ~ 13 0
14 LEDA 50011 EmG 14 02 36.066 +39 13 13.29   17.20       ~ 19 0
15 Mrk 1369 H2G 14 04 14.8604542388 +36 43 32.669171223   17.0       ~ 22 0
16 BD+33 2642 pA* 15 51 59.8857490337 +32 56 54.327647794 9.806 10.61 10.73 10.884 10.961 O7p 388 0
17 M 92 GlC 17 17 07.39 +43 08 09.4     6.52     ~ 1943 0
18 NGC 7790 OpC 23 58 24 +61 12.5   9.18 8.5     ~ 249 0

    Equat.    Gal    SGal    Ecl

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2021.05.17-17:06:20

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