A Sample of IRAS Infrared-Selected Seyfert 1.5 Galaxies: Infrared-Color $\alpha (60,25)$ Dominated Eigenvector 1

Abstract

The well-documented E1 relationships are first extended to infrared color $\alpha (60,25)$ and flux ratio [OIII]/H${\beta }_{\mathrm{n}}$ by comparing emission line properties to continuum properties in infrared wavelength. Both direct correlations and a principle component analysis are used in a sample of 50 IRAS IR-selected Seyfert 1.5 galaxies. In addition to confirm the correlations of E1 in Boroson & Green (1992), our Eigenvector 1 turns out to be dominated by mid-infrared color $\alpha$(60,25), and most strongly effected by RFe, [OIII]/H${\beta }_{\mathrm{n}}$, and EW(H${\beta }_{\mathrm{b}}$). Our analysis indicate that the objects with large E1 tend to co-existent with relatively young nuclear stellar populations, which implies that the E1 is related with nuclear starformation history. The IR-dominated Eigenvector 1 can be, therefore, inferred to be interpreted as ``age'' of AGN. In confirmation of Xu et al. (2003), it is clear that the extreme Seyfert galaxies with both large RFe and large [OIII]/H${\beta }_{\mathrm{n}}$ are rare in our Universe.

35 pages, 9 figures, accepted by ApJ

References in corpus (44)

• A Fundamental Relation Between Supermassive Black Holes and Their Host Galaxies
• The Demography of Massive Dark Objects in Galaxy Centres
• The slope of the black-hole mass versus velocity dispersion correlation
• The Relation between Black Hole Mass, Bulge Mass, and Near-Infrared Luminosity
• A Physical Model for the Co-evolution of QSOs and of their Spheroidal Hosts
• Present-Day Growth of Black Holes and Bulges: the SDSS Perspective
• The Soft X-Ray Properties of a Complete Sample of Optically Selected Quasars II. Final Results
• Black Hole Mass and Eddington Ratio as Drivers for the Observable Properties of Radio-Loud and Radio-Quiet QSOs
• Black Hole Mass Estimates from Reverberation Mapping and from Spatially Resolved Kinematics
• Black Hole Winds
• Quasi-Stellar Objects, Ultraluminous IR Galaxies, and Mergers
• Eigenvector 1: An Optimal Correlation Space for Active Galactic Nuclei
• Narrow Line Seyfert 1 Galaxies and the Evolution of Galaxies & Active Galaxies
• The unusual emission line spectrum of IZw1
• Completion of a Survey and Detailed Study of Double-Peaked Emission Lines in Radio-Loud AGNs
• Double-Peaked Low-Ionization Emission Lines in Active Galactic Nuclei
• The Nuclear and Circum-nuclear Stellar Population in Seyfert 2 Galaxies: Implications for the Starburst-AGN Connection
• A Complete Sample of Soft X-ray Selected AGN: II. Statistical Analysis
• Searching for the Physical Drivers of the Eigenvector 1 Correlation Space
• Empirical diagnostics of the starburst-AGN connection
• Average Quasar Spectra in the Context of Eigenvector 1
• Near Infrared Spectroscopy of High Redshift Active Galactic Nuclei. II. Disappearing Narrow Line Regions and the Role of Accretion
• Searching For the Physical Drivers of Eigenvector 1: Influence of Black Hole Mass and Eddington Ratio
• Kinematic Linkage Between the Broad and Narrow Line Emitting Gas in AGN
• Circumnuclear stellar population, morphology and environment of Seyfert 2 galaxies: an evolutionary scenario
• The Nuclear Gas Dynamics and Star Formation of NGC 7469
• The Physical Connections Among IR QSOs, PG QSOs and Narrow-Line Seyfert 1 Galaxies
• Early Afterglows in Wind Environments Revisited
• The Stellar Content of Active Galaxies
• A Spectacular Post-Starburst Quasar
• Origin of the viewing-angle dependence of the optical continuum emission in quasars
• VLT/ISAAC Spectra of the H-beta Region in Intermediate Redshift Quasars
• The Demise of the Classical BLR in the Luminous Quasar PG1416-129
• 3C 48: Stellar Populations and the Kinematics of Stars and Gas in the Host Galaxy
• Accretion Discs with Accreting Coronae in AGN - II. Nuclear Wind
• Hidden starburst in Seyfert 1 Galaxies
• Spectroscopic Properties of QSOs Selected from Ultraluminous Infrared Galaxy Samples
• Searching for the Physical Drivers of Eigenvector-1: From Quasars to Nano-Quasars
• An AGN Sample with High X-ray-to-optical Flux Ratio from RASS II.Optical Emission Line Properties of Seyfert 1 Type AGN
• [OII] Emission, Eigenvector 1 and Orientation in Radio-quiet Quasars
• Variability of Optical \ion{Fe}{ii} Complex in Narrow-Line Seyfert 1 Galaxy NGC 4051
• A complete sample of Seyfert galaxies selected at 1/4 keV
• NIR Observations of the QSO 3C 48 Host Galaxy
• Star-Forming AGN Host Galaxies

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