2007A&A...469..881J

Query : 2007A&A...469..881J

2007A&A...469..881J - Astronomy and Astrophysics, volume 469881-889 (2007/7-3)

XMM-Newton view of galaxy pairs: activation of quiescent black holes?

JIMENEZ-BAILON E., LOISEAU N., GUAINAZZI M., MATT G., ROSA-GONZALEZ D., PICONCELLI E. and SANTOS-LLEO M.

Abstract (from CDS):

We report on XMM-Newton observations of three nearby galaxy pairs, AM0707-273, AM1211-465, and AM2040-674. All six galaxies were previously classified as HII galaxies based on optical and IR spectroscopic analysis. All galaxies were detected with XMM-Newton and each member was isolated and analyzed independently. The X-ray spectra reveal strong evidence of AGN activity in the NE member of AM1211-465 pair. We measured a luminosity of 1.94+0.11–0.15x1042erg/s in the 2-10 keV band and the presence of a neutral FeKα line with a confidence level of 98.8%. The high nH value, 2.2±0.2x1022cm–2, would explain the misclassification of the source. Marginal evidence of AGN nature was found in the X-ray spectra of AM1211-465SW and AM0707-273E. The X-ray emission of the three remaining galaxies can be explained by starburst activity.

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Journal keyword(s): galaxies: active - galaxies: nuclei - galaxies: general - X-rays: galaxies - X-rays: general

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 - 2026 		#notes
1 AM 0707-273 G 07 09 45 -27 35.3           ~ 3 0
2 APG 270 PaG 10 49 50.07 +32 58 55.4           ~ 186 1
3 NGC 3395 GiG 10 49 50.1160141680 +32 58 58.421838360   12.1 12.10     ~ 292 1
4 NGC 3690C G 11 28 30.70 +58 33 48.4           ~ 351 0
5 NGC 3690 IG 11 28 31.0 +58 33 41   13.19 12.86     ~ 1015 4
6 NGC 3690B GiP 11 28 31.02 +58 33 40.7   11.8       ~ 635 4
7 NGC 3690NE AGN 11 28 33.07 +58 33 54.2   11.8       ~ 635 4
8 ESO 267-29 AG? 12 13 52.2941206752 -47 16 25.696085520   14.18   12.93   ~ 67 0
9 ESO 509-66 Sy2 13 34 39.6208983000 -23 26 47.629092300   16.60 16.6 15.19   ~ 87 2
10 MCG-06-30-015 Sy1 13 35 53.7691256160 -34 17 44.160716796   13.89 13.61 8.9   ~ 1559 0
11 NGC 6240 Sy2 16 52 58.9 +02 24 03   14.31 13.37     ~ 1734 2
12 ESO 74-8 IG 20 45 20.8 -67 32 41     13.73     ~ 7 0
13 IC 5032 Sy2 20 45 22.0904074224 -67 33 06.796630224   14.68   14.55   ~ 17 0
14 NGC 7714 AGN 23 36 14.1257730600 +02 09 18.197422668   14.91 14.36     ~ 788 1
15 APG 284 PaG 23 36 19 +02 09.3   12.6       ~ 608 0
16 NGC 7715 GiP 23 36 21.768 +02 09 25.30   11.81 12.14     ~ 142 0
17 NGC 7771 GiG 23 51 24.880 +20 06 42.57 13.42 13.08 12.25     ~ 350 3

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