2018A&A...619A..69J


Query : 2018A&A...619A..69J

2018A&A...619A..69J - Astronomy and Astrophysics, volume 619A, 69-69 (2018/11-1)

Near-infrared morphologies of the host galaxies of narrow-line Seyfert 1 galaxies.

JARVELA E., LAHTEENMAKI A. and BERTON M.

Abstract (from CDS):

We present J-band near-infrared (NIR) imaging of the host galaxies of nine narrow-line Seyfert 1 galaxies (NLS1). Based on high-frequency radio observations at 37GHz, seven of them could host powerful jets that are most likely relativistic. Host galaxy morphology studies of NLS1 galaxies are scarce, but exceedingly important for understanding the seemingly heterogeneous nature of the NLS1 population as well as their evolution and place in the active galactic nuclei (AGN) scheme. Increasing the sample size is essential for achieving statistically significant results. We determine the morphological types of the host galaxies by performing photometric decomposition of NIR images using a 2D image decomposition algorithm GALFIT. We were able to sufficiently model five of the nine host galaxies. Based on the fitting parameters, mainly the Sersic index, all five are disk-like galaxies. Sources with clearly distinguishable bulge components all have pseudo-bulges, and four out of five sources show a component resembling a bar. A surprisingly large fraction, three out of five, show signs of interaction or disturbed morphology. Our results suggest that spiral galaxies with pseudo-bulges are able to launch and maintain powerful jets. They also imply that interaction - mainly minor mergers - may have a role in initially triggering higher levels of nuclear activity in NLS1 galaxies. Furthermore, our results support the heterogeneous nature of the NLS1 class and indicate that this diversity is caused by different evolutionary stages, possibly due to mergers.

Abstract Copyright: © ESO 2018

Journal keyword(s): galaxies: active - galaxies: Seyfert - galaxies: structure - infrared: galaxies

Simbad objects: 23

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Number of rows : 23
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
#notes
1 HD 19445 PM* 03 08 25.5883873084 +26 19 51.400965175 8.29 8.52 8.06 7.60 7.27 G2VFe-3 770 0
2 6C 032130+340016 BLL 03 24 41.1612813408 +34 10 45.857918460     15.72 13.1   ~ 271 1
3 ATO J138.2744+36.9141 EB? 09 13 05.8667155848 +36 54 50.960187072   12.01 11.57     ~ 4 0
4 LEDA 2090361 Sy1 09 13 13.7355086640 +36 58 17.229766620   18.39 18.09     ~ 31 0
5 2MASX J11193404+5335181 Sy1 11 19 34.0052875752 +53 35 18.622016556   16.89 16.27     ~ 24 0
6 LEDA 3096143 Sy1 12 27 49.1379963552 +32 14 58.922257236   19.52 18.55 17.11   ~ 42 0
7 [M60b]+32 189 * 12 29 04.3629805008 +32 16 45.394134420   11.67 11.62     A2 12 0
8 TYC 3458-1053-1 * 12 31 09.1821722232 +50 13 40.184194332   12.57 12.25     ~ 1 0
9 2MASSI J1232200+495721 Sy1 12 32 20.1171538776 +49 57 21.778344180   17.99 17.73     ~ 44 0
10 SDSS J125635.89+500852.4 Sy1 12 56 35.8810106376 +50 08 52.376245188   19.92 19.55     ~ 14 1
11 TYC 3461-2198-1 * 12 57 15.5398290048 +49 54 13.990895352   11.88 11.44     ~ 1 0
12 2MASS J13334547+4141277 Sy1 13 33 45.4762153944 +41 41 27.778997040   18.38 18.11     ~ 31 0
13 TYC 3029-1092-1 * 13 34 00.4576862040 +41 26 40.548732396   12.12 11.82     ~ 1 0
14 ICRF J150506.4+032630 Sy1 15 05 06.47716039 +03 26 30.8125704   19.02 18.62 17.72   ~ 250 1
15 TYC 3871-106-1 * 15 10 12.7561277784 +55 44 53.350748916   12.32 11.77     ~ 1 0
16 2MASS J15102005+5547221 Sy1 15 10 20.0414986560 +55 47 22.003387944   19.48 18.93     ~ 14 0
17 2MASX J15220541+3934407 Sy1 15 22 05.3512796184 +39 34 41.567954304   16.26 15.55     ~ 14 0
18 TYC 3052-658-1 * 15 22 10.6824651504 +39 42 48.035126160   13.77 11.73     ~ 1 0
19 2MASS J16125982+4219405 Sy2 16 12 59.8331228064 +42 19 40.339853616   18.46 18.08     ~ 24 0
20 TYC 3064-693-1 * 16 13 00.6268165872 +42 26 53.753915148   12.51 12.68     ~ 1 0
21 87GB 164240.2+262427 Sy1 16 44 42.5339200680 +26 19 13.227002976   18.80 18.42     ~ 105 1
22 * 58 Aql * 19 54 44.7948526968 +00 16 25.050363384   5.703 5.631     B9IV 217 0
23 ICRF J200755.1-443444 Sy1 20 07 55.1842447944 -44 34 44.274118260   19.3 19.3 18   ~ 171 1

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