2005A&A...431..813R


C.D.S. - SIMBAD4 rel 1.7 - 2020.02.23CET00:33:51

2005A&A...431..813R - Astronomy and Astrophysics, volume 431, 813-823 (2005/3-1)

The peculiar galaxy Mkn 298 revisited with integral field spectroscopy.

RADOVICH M., CIROI S., CONTINI M., RAFANELLI P., AFANASIEV V.L. and DODONOV S.N.

Abstract (from CDS):

Spectroscopic and imaging data of the peculiar galaxy Mkn 298 are presented. Narrow-band Hα and broad-band R images are used to study the star formation rate in the galaxy and its morphology, which is typical of a merging system. Long-slit and integral field spectra are used to assess the kinematics of gas and stars, and the nature of the ionizing source at different distances from the nucleus. In particular, the nucleus of Mkn 298 is characterized by peculiar line ratios: [NII]λ6583/Hα is typical of HII-like regions, while [OI]λ6300/Hα could indicate the presence of an active galactic nucleus. We show that models where a shock component is added to photoionization from a starburst allow us to reproduce the observed line ratios. Mkn 298 is thus most likely a star-forming galaxy, rather than a galaxy hosting an active nucleus.

Abstract Copyright:

Journal keyword(s): galaxies: peculiar - galaxies: individual: Mkn 298 - shock waves

Nomenclature: Figs 1, 2, Table 1: [RCC2005] Mrk 298 aN (Nos a-e, d1-d2), [RCC2005] Mrk 298 AN (Nos N1-N2).

Simbad objects: 17

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Number of rows : 17

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NGC 3656 GiP 11 23 38.595 +53 50 31.38 14.50 14.25 12.75     ~ 124 1
2 HCG 54 CGG 11 29 15 +20 34.7           ~ 49 0
3 IC 1182 AGN 16 05 36.7955748492 +17 48 07.418013290   16.20 15.19     ~ 151 0
4 LAWD 87 WD* 21 32 16.2327559970 +00 15 14.398335415 13.717 14.634 14.674 14.675 14.676 DB4 165 1
5 [MBF2004] MTK 5 PoG ~ ~           ~ 1 0
6 [MBF2004] MTK 6 PoG ~ ~           ~ 1 0
7 [MBF2004] CK PoG ~ ~           ~ 1 0
8 [MBF2004] CKN 1 PoG ~ ~           ~ 1 0
9 [RCC2005] Mrk 298 a PoG ~ ~           ~ 1 0
10 [MBF2004] CKN 4 PoG ~ ~           ~ 1 0
11 [RCC2005] Mrk 298 N1 PoG ~ ~           ~ 1 0
12 [RCC2005] Mrk 298 N2 PoG ~ ~           ~ 1 0
13 [RCC2005] Mrk 298 d PoG ~ ~           ~ 1 0
14 [MBF2004] CKN 2 PoG ~ ~           ~ 1 0
15 [MBF2004] MTK 1 PoG ~ ~           ~ 1 0
16 [MBF2004] MTK 3 PoG ~ ~           ~ 1 0
17 [MBF2004] MTK 4 PoG ~ ~           ~ 1 0

    Equat.    Gal    SGal    Ecl

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2020.02.23-00:33:51

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