SIMBAD references

2018A&A...615A.167C - Astronomy and Astrophysics, volume 615A, 167-167 (2018/7-1)

Probing narrow-line Seyfert 1 galaxies in the southern hemisphere.

CHEN S., BERTON M., LA MURA G., CONGIU E., CRACCO V., FOSCHINI L., FAN J.H., CIROI S., RAFANELLI P. and BASTIERI D.

Abstract (from CDS):

We present a new accurate catalog of narrow-line Seyfert 1 galaxies (NLS1s) in the southern hemisphere from the Six-degree Field Galaxy Survey (6dFGS) final data release, which is currently the most extensive spectroscopic survey available in the southern sky whose database has not yet been systematically explored. We classified 167 sources as NLS1s based on their optical spectral properties. We derived flux-calibrated spectra for the first time that the 6dFGS does not provide. By analyzing these spectra, we obtained strong correlations between the monochromatic luminosity at 5100Å and the luminosities of Hβ and [OIII]λ5007 lines. The central black hole mass and the Eddington ratio have average values of 8.6x106M and 0.96 LEdd respectively, which are typical values for NLS1s. In the sample, 23 (13.8%) NLS1s were detected at radio frequencies, and 12 (7.0%) of them are radio-loud. Our results confirmed that radio-loud sources tend to have higher redshift, a more massive black hole, and higher radio and optical luminosities than radio-quiet sources.

Abstract Copyright: © ESO 2018

Journal keyword(s): galaxies: active - galaxies: nuclei - galaxies: Seyfert - quasars: emission lines - quasars: supermassive black holes

VizieR on-line data: <Available at CDS (J/A+A/615/A167): table1.dat table2.dat table4.dat table5.dat>

Simbad objects: 175

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2020.01.27-13:06:58

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