# 1998A&AS..127..527D

 other querymodes : Identifierquery Coordinatequery Criteriaquery Referencequery Basicquery Scriptsubmission TAP Outputoptions Help

 Query : 1998A&AS..127..527D

1998A&AS..127..527D - Astron. Astrophys., Suppl. Ser., 127, 527-542 (1998/February-1)

Imaging and spectroscopy of ten southern galaxies selected from a catalogue of peculiar galaxies.

DONZELLI C.J. and FERREIRO D.L.

Abstract (from CDS):

We present BVRI broad band photometry and long slit spectroscopy for a sample of ten southern galaxies selected from the Agueero Catalogue of Peculiar Galaxies. The analysis of the images shows that only four galaxies of the sample are truly peculiar galaxies and four are normal spirals. The remaining two galaxies, a normal spiral and a SO, form an interacting pair. Despite the rather complicated structure of the peculiar galaxies we did not find evidence of mergers in our analysis of images and rotation curves. Almost all galaxies in our sample show star forming regions with very blue colors, (B-V) ranging from 0.2 to 0.6. The SO galaxy shows a very interesting structure in the V-I color map suggesting that star formation events have occurred in concentric annuli centered in the nucleus. In our photometric analysis we did not find characteristics that could distinguish between normal and peculiar galaxies. We obtained the pure-emission'' line spectra for six galaxies of the sample by subtracting appropriate templates. These templates correspond to ellipticals selected from our library of spectra. This subtraction technique provides a powerful tool to calculate line flux ratios uncontaminated by the underlying stellar population. Our spectroscopic analysis confirms that the spiral galaxy of the interacting system AM 2054-433 has a LINER-type nucleus. In the normal galaxy ESO 316-29 we find evidence of a LINER nucleus and we report a new Seyfert 2 galaxy, AM 2054-433 N. For this SO galaxy the line flux ratios measured from the pure-emission spectrum are indicative of a Seyfert 2 rather than a LINER nucleus as it was previously reported by other authors. Three of the four peculiar galaxies in our sample have much higher star-formation rate than normal galaxies, as measured by Hα+[NII] line emission. The observed EW(Hα+[NII]) values for these peculiar galaxies are around 60Å, compared to 22Å for normal galaxies. Whole-aperture spectra for these peculiar galaxies show very similar EW(Hα+[NII]) values to those observed in their nuclear region suggesting that a global starburst has occurred. Although our sample is small the results presented suggest that peculiar morphology and global starburst events are closely related.

Journal keyword(s): galaxies: peculiar - galaxies: photometry - galaxies: starburst - galaxies: interactions

CDS comments: IRAS 23260-4116 misprint for IRAS 23260-4136

Full paper

 Number of rows : 10
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 ESO 316-29 GiG 10 07 44.9550719232 -41 19 53.647058028   14.65 14.45 13.03   ~ 22 0
2 ESO 317-34 GiG 10 29 00.7054384008 -40 04 57.906056676   13.19   12.25 12.9 ~ 27 0
3 ESO 317-41 GiG 10 31 23.1149036016 -42 03 38.266484832   14.42   13.18   ~ 49 0
4 NGC 3318 G 10 37 15.5052550728 -41 37 38.912719512   12.71 11.97 11.77 12.4 ~ 88 0
5 NGC 3378 GiG 10 46 43.2648817392 -40 00 57.754711800   13.48   12.02   ~ 16 0
6 ESO 266-15 G 11 40 55.723 -44 28 52.34   13.18   12.04 12.9 ~ 40 0
7 ESO 340-21 GiG 20 22 29.0742513192 -41 54 03.409069572   13.88   12.50   ~ 17 0
8 ESO 286-17 Sy2 20 57 49.4397976872 -43 21 05.656391676   14.49   13.16   ~ 19 0
9 ESO 286-18 GiP 20 57 50.3434558560 -43 22 28.058494764   14.30   12.77 13.2 ~ 50 0
10 IC 5325 GiG 23 28 43.4210245680 -41 19 59.690746920 11.80 11.89 11.27 10.73 11.5 ~ 100 1

To bookmark this query, right click on this link: simbad:objects in 1998A&AS..127..527D and select 'bookmark this link' or equivalent in the popup menu

2022.11.27-17:06:46