Systematic study of a large sample of NLS1 galaxies from SDSS: first results

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dc.creatorYuan, Weimin
dc.creatorZhou, Hongyan
dc.creatorWang, Tinggui
dc.creatorDong, Xiaobo
dc.creatorLu, Honglin
dc.creatorWang, Junxian
dc.creatorLu, Youjun
dc.creatorFan, Lulu
dc.creatorDou, Liming
dc.date2006-12-17
dc.date.accessioned2026-07-07T07:35:33Z
dc.date.available2026-07-07T07:35:33Z
dc.descriptionThis proceedings contribution summarizes first results obtained from a systematic study of 2011 NLS1 galaxies, as presented in Zhou et al. (2006, ApJS 166, 128). The sample was compiled by examining the spectral parameters of galaxies and QSOs derived from SDSS DR3 data. We discuss some preliminary results on the statistic properties of the sample, such as the fraction of NLS1, the properties of broad and narrow emission lines, and emission in other wavebands. The black hole mass--velocity dispersion relation for NLS1s was re-examined using the velocity dispersion values estimated from the stellar absorption spectra of the host galaxies. Preliminary result from an X-ray study for a small subset using data obtained by XMM-Newton is briefly discussed.
dc.descriptionConference proceedings to appear in "The Central Engine of Active Galactic Nuclei", ed. L. C. Ho and J.-M. Wang (San Francisco: ASP)
dc.identifierhttps://arxiv.org/abs/astro-ph/0612470
dc.identifierhttp://arxiv.org/abs/astro-ph/0612470
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/120131
dc.subjectAstrophysics
dc.titleSystematic study of a large sample of NLS1 galaxies from SDSS: first results
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