Stronger Constraints on the Evolution of the $M_{\mathrm{BH}}-{\sigma }_{\ast }$ Relation up to $z\sim 0.6$

Abstract

We revisit the possibility of redshift evolution in the $M_{\mathrm{BH}}-{\sigma }_{\ast }$ relation with a sample of 22 Seyfert 1 galaxies with black holes (BHs) in the mass range $10^{6.3}-10^{8.3}{M}_{\odot }$ and redshift range $0.03<z<0.57$ with spectra obtained from spatially resolved Keck/Low-Resolution Imaging Spectrometer observations. Stellar velocity dispersions were measured directly from the Mg Ib region, taking into consideration the effect of Fe II contamination, active galactic nucleus (AGN) dilution, and host-galaxy morphology on our measurements. BH masses are estimated using the H$\beta$ line width, and the luminosity at 5100 $\overset{\lower.5em\circ}{\mathrm{A}}$ is estimated from surface brightness decomposition of the AGN from the host galaxy using high-resolution imaging from the Hubble Space Telescope. Additionally, we investigate the use of the [O III]$\lambda 5007$ emission line width as a surrogate for stellar velocity dispersion, finding better correlation once corrected for Fe II contamination and any possible blueshifted wing components. Our selection criteria allowed us to probe lower-luminosity AGNs and lower-mass BHs in the non-local universe than those measured in previous single-epoch studies. We find that any offset in the $M_{\mathrm{BH}}-{\sigma }_{\ast }$ relation up to $z\sim 0.6$ is consistent with the scatter of local BH masses, and address the sources of biases and uncertainties that contribute to this scatter.

Accepted 14 May 2019 for publication in ApJ. 42 pages, 12 figures, 4 tables. Corrected for typographical errors

References in corpus (19)

• Improving the full spectrum fitting method: accurate convolution with Gauss-Hermite functions
• Structural Properties of Pseudo-Bulges, Classical Bulges and Elliptical Galaxies: an SDSS Perspective
• Biases in Virial Black Hole Masses: An SDSS Perspective
• The bulk of the black hole growth since z~1 occurs in a secular universe: No major merger-AGN connection
• The black hole mass - stellar velocity dispersion relation of narrow-line Seyfert 1 galaxies
• On the nature of Seyfert galaxies with high [OIII]5007 blueshifts
• The Tully-Fisher Relation and Its Residuals for a Broadly Selected Sample of Galaxies
• Cosmic Evolution of Black Holes and Spheroids. I: The M_BH-sigma Relation at z=0.36
• Cosmic Evolution of Black Holes and Spheroids. III. The M-sigma relation in the last six billion years
• Cosmic Evolution of Black Holes and Spheroids. II: Scaling Relations at z=0.36
• Stellar kinematics across the Hubble sequence in the CALIFA survey: General properties and aperture corrections
• The flux ratio of the [OIII] 5007,4959 lines in AGN: Comparison with theoretical calculations
• Are the black hole masses in Narrow Line Seyfert 1 galaxies actually small?
• The Sloan Digital Sky Survey Reverberation Mapping Project: No Evidence for Evolution in the M-sigma Relation to z~1
• Narrow-line Seyfert 1 Galaxies and the M_BH - sigma Relation
• The Scaling of Stellar Mass and Central Stellar Velocity Dispersion for Quiescent galaxies at z < 0.7
• Cosmic Evolution of Black Holes and Spheroids. V. The Relation Between Black Hole Mass and Host Galaxy Luminosity for a Sample of 79 Active Galaxies
• Effects of Inclination on Measuring Velocity Dispersion and Implications for Black Holes
• Following Black Hole Scaling Relations Through Gas-Rich Mergers

Cited by in corpus (4)

• Spectral Classification and Ionized Gas Outflows in $z\sim 2$ WISE-Selected Hot Dust-Obscured Galaxies
• Multi-wavelength observations of SDSS J105621.45+313822.1, a broad-line, low-metallicity AGN
• The Discovery of a Hidden Broad Line AGN in a Bulgeless Galaxy: Keck NIR Spectroscopic Observations of SDSS J085153.64+392611.76
• High-$z$ Universe probed via Lensing by QSOs (HULQ) I. Number Estimates of QSO-QSO and QSO-Galaxy Lenses