High-redshift Narrow-line Seyfert 1 Galaxies: A Candidate Sample

Abstract

The study of narrow-line Seyfert 1 galaxies (NLS1s) is now mostly limited to low redshift ($z<0.8$) because their definition requires the presence of the H$\beta$ emission line, which is redshifted out of the spectral coverage of major ground-based spectroscopic surveys at $z>0.8$. We studied the correlation between the properties of H$\beta$ and Mg II lines of a large sample of SDSS DR14 quasars to find high-$z$ NLS1 candidates. Based on the strong correlation of $\mathrm{FWHM}(\mathrm{MgII})=(0.880\pm 0.005)\times \mathrm{FWHM}(\mathrm{H}\beta )+(0.438\pm 0.018)$, we present a sample of high-$z$ NLS1 candidates having FWHM of Mg II $<$ 2000 km s${}^{-1}$. The high-$z$ sample contains 2684 NLS1s with redshift $z=0.8-2.5$ with a median logarithmic bolometric luminosity of $46.16\pm 0.42$ erg s${}^{-1}$, logarithmic black hole mass of $8.01\pm 0.35M_{\odot }$, and logarithmic Eddington ratio of $0.02\pm 0.27$. The fraction of radio-detected high-$z$ NLS1s is similar to that of the low-$z$ NLS1s and SDSS DR14 quasars at a similar redshift range, and their radio luminosity is found to be strongly correlated with their black hole mass.

arXiv commentPublished in ApJS on March 2021. Catalog is available on Zenodo (https://doi.org/10.5281/zenodo.4405039)

References in corpus (61)

• The Wide-field Infrared Survey Explorer (WISE): Mission Description and Initial On-orbit Performance
• Some Aspects of Measurement Error in Linear Regression of Astronomical Data
• Linear Regression for Astronomical Data with Measurement Errors and Intrinsic Scatter
• An Empirical Ultraviolet Template for Iron Emission in Quasars as Derived from I Zw 1
• Radio-Loudness of Active Galactic Nuclei: Observational Facts and Theoretical Implications
• Second ROSAT all-sky survey (2RXS) source catalogue
• The Sloan Digital Sky Survey Quasar Catalog: Fourteenth Data Release
• The diversity of quasars unified by accretion and orientation
• The XMM-Newton serendipitous survey. VII. The third XMM-Newton serendipitous source catalogue
• A Comprehensive Study of 2 000 Narrow Line Seyfert 1 Galaxies from the Sloan Digital Sky Survey: I. The Sample
• A Comprehensive Spectral and Variability Study of Narrow-Line Seyfert 1 Galaxies Observed by ASCA: II. Spectral Analysis and Correlations
• Radio-loud Narrow-Line Type 1 Quasars
• Narrow Line Seyfert 1 Galaxies and the Evolution of Galaxies & Active Galaxies
• On Black Hole Masses and Radio Loudness in AGN
• Spectral Classification of Quasars in the Sloan Digital Sky Survey: Eigenspectra; Redshift and Luminosity Effects
• A spectrophotometric atlas of Narrow-Line Seyfert 1 galaxies
• A Universal Scaling for the Energetics of Relativistic Jets From Black Hole Systems
• Black Hole Growth to z = 2 - I: Improved Virial Methods for Measuring M_BH and L/L_Edd
• Fe II Emission in 14 Low-Redshift Quasars: I - Observations
• The Black Hole Mass - Galaxy Bulge Relationship for QSOs in the SDSS DR3
• Spectral properties of quasars from Sloan Digital Sky Survey data release 14: The catalog
• M-BH - sigma relation for a Complete Sample of Soft X-ray Selected AGNs
• The radio-luminosity - black hole mass correlation for quasars from the FIRST Bright Quasar Survey, and a ``unification scheme'' for radio-loud and radio-quiet quasars
• Black hole mass estimate for a sample of radio-loud narrow-line Seyfert 1 galaxies
• Cosmic Evolution of Mass Accretion Rate and Metalicity in Active Galactic Nuclei
• A Catalog of Narrow Line Seyfert 1 Galaxies from the Sloan Digital Sky Survey Data Release 12
• Enhanced Star Formation in Narrow Line Seyfert 1 AGN revealed by Spitzer
• Near Infrared Spectroscopy of High Redshift Active Galactic Nuclei. II. Disappearing Narrow Line Regions and the Role of Accretion
• Are the black hole masses in Narrow Line Seyfert 1 galaxies actually small?
• Are Outflows Biasing Single-Epoch CIV Black Hole Mass Estimates?
• Evolution of the Radio Loud Galaxy Population
• Narrow-line Seyfert 1 Galaxies from the Sloan Digital Sky Survey Early Data Release
• Correlation Analysis of a Large Sample of Narrow-Line Seyfert 1 Galaxies: Linking Central Engine and Host Properties
• Implications of infalling Fe II - emitting clouds in active galactic nuclei: anisotropic properties
• Radio-loud Narrow Line Seyfert 1 under a different perspective: a revised black hole mass estimate from optical spectropolarimetry
• Rest-frame Optical Spectra and Black Hole Masses of 3<z<6 Quasars
• Optical Variability of Narrow and Broad line Seyfert 1 galaxies
• Gamma-ray Emitting Narrow Line Seyfert 1 Galaxies in The Sloan Digital Sky Survey
• Eddington ratio governs the equivalent width of MgII emission line in active galactic nuclei
• Identification of a New $\gamma$-ray-emitting narrow-line Seyfert 1 Galaxy, at Redshift $\sim 1$
• The disc-like host galaxies of radio-loud Narrow-Line Seyfert 1s
• Highly accreting quasars: The SDSS low-redshift catalog
• General Physical Properties of Gamma-ray Emitting Narrow-Line Seyfert 1 Galaxies
• The UV and optical Fe II emission lines in type 1 AGNs
• Radio Properties of Low Redshift Broad Line Active Galactic Nuclei
• Investigating kpc-scale radio emission properties of narrow-line Seyfert 1 galaxies
• Probing narrow-line Seyfert 1 galaxies in the southern hemisphere
• Extending the Calibration of CIV-Based Single-Epoch Black Hole Mass Estimators for Active Galactic Nuclei
• Near-infrared morphologies of the host galaxies of narrow-line Seyfert 1 galaxies
• Are There Any Type 2 QSOs? The Case of AXJ0341.4-4453
• The Nature of gamma-ray Loud Narrow Line Seyfert I Galaxies PKS 1502+036 and PKS 2004-447
• The FeII/MgII flux ratio of low-luminosity quasars at z~3
• Monte Carlo error analyses of Spearman's rank test
• Statistical Properties of Narrow-Line Seyfert 1 galaxies
• Implications from the optical to UV flux ratio of FeII emission in quasars
• WISE view of Narrow-Line Seyfert 1 galaxies: mid-infrared color and variability
• Optical and X-ray Spectroscopy of 1E 0449.4-1823: Demise of the original type 2 QSO
• Rare finding of a 100 kpc large double-lobed radio galaxy hosted in the Narrow Line Seyfert 1 galaxy SDSS J103024.95+551622.7
• SDSS J094635.06+101706.1: a redshift one, very radio-loud, γ-ray emitting narrow-line Seyfert 1 galaxy
• A comparison of X-ray photon indices among the narrow and broad-line Seyfert 1 galaxies
• Are Narrow Line Seyfert 1 Galaxies powered by low mass black holes?

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