2016A&A...587A.138B


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.12CEST12:51:46

2016A&A...587A.138B - Astronomy and Astrophysics, volume 587A, 138-138 (2016/3-1)

A low-luminosity type-1 QSO sample. V. Overluminous host spheroids and their excitation mechanisms.

BUSCH G., FAZELI N., ECKART A., VALENCIA-S. M., SMAJIC S., MOSER L., SCHARWAECHTER J., DIERKES J. and FISCHER S.

Abstract (from CDS):

We present near-infrared (NIR) H+K-band long-slit spectra of eleven galaxies that were obtained with SOFI at the NTT (ESO). The galaxies are chosen from the low-luminosity type-1 quasi-stellar object (LLQSO) sample, which comprises the 99 closest (z≤0.06) QSOs from the Hamburg/ESO survey for bright UV-excess QSOs. These objects are ideal targets to study the gap between local Seyfert galaxies and high-redshift quasars because they show much stronger AGN activity than local objects, but are still close enough for a detailed structural analysis. We fit hydrogen recombination, molecular hydrogen, and [FeII] lines after carefully subtracting the continuum emission. From the broad Paα components, we estimated black hole masses and enlarged the sample of LLQSOs that deviate from the MBH-Lbulge relations of inactive galaxies from 12 to 16 objects. All objects show emission from hot dust (T∼1200K) as well as stellar contribution. However, the respective fractions vary strongly among the objects. More than half of the objects show H2 emission lines, which indicate a large reservoir of molecular gas that is needed to feed the AGN and star formation. In the NIR diagnostic diagram all objects lie in the location of AGN-dominated objects. However, most of the objects show indications of star formation activity, suggesting that their offset location with respect to MBH-Lbulge relations of inactive galaxies may be a consequence of overluminous bulges.

Abstract Copyright:

Journal keyword(s): galaxies: active - galaxies: starburst - galaxies: nuclei - galaxies: Seyfert - infrared: galaxies

VizieR on-line data: <Available at CDS (J/A+A/587/A138): sources.dat spectra.dat>

Simbad objects: 11

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Number of rows : 11

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 3XMM J003915.8-511701 Sy1 00 39 15.8341273306 -51 17 01.480962252   15.77 15.28 15.66   ~ 120 0
2 ESO 540-27 EmG 00 47 41.3246215056 -21 29 27.614728291   14.52   13.51   ~ 26 0
3 ESO 113-10 Sy1 01 05 16.8725940848 -58 26 15.265543353   14.63 14.6 13.35   ~ 51 0
4 Z 385-82 Sy1 01 21 59.8142301684 -01 02 24.373963458   17.04 16.78 11.0   ~ 135 0
5 ESO 301-13 Sy1 03 24 58.4837768334 -41 53 33.566233730   15.89 15.5 14.41   ~ 16 1
6 2MASX J21155155-5913544 G 21 15 51.5155658705 -59 13 54.213469913   16.19       ~ 9 0
7 6dFGS gJ213049.9-020814 AG? 21 30 49.9360176141 -02 08 14.541603384   17.46   16.33   ~ 8 0
8 2MAXI J2131-334 Sy1 21 32 02.2033285165 -33 42 53.778237797 15.85 16.92 15.66 15.47   ~ 53 0
9 ESO 404-29 Sy1 22 07 45.0230363061 -32 35 01.582300938   15.52 15.32 15.18   ~ 24 0
10 ESO 344-16 Sy1 22 14 42.0134271932 -38 48 22.877654047   15.32 14.54 10.0   ~ 52 0
11 LEDA 68751 Sy1 22 23 49.7 -02 06 13   16.93 15.77 16.02   ~ 432 2

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2020.07.12-12:51:46

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