skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Recalibration of the M {sub BH}– σ {sub ⋆} Relation for AGN

Abstract

We present a recalibration of the M {sub BH}– σ {sub ⋆} relation, based on a sample of 16 reverberation-mapped galaxies with newly determined bulge stellar velocity dispersions ( σ {sub ⋆}) from integral-field spectroscopy (IFS), and a sample of 32 quiescent galaxies with publicly available IFS. For both samples, σ {sub ⋆} is determined via two different methods that are popular in the literature, and we provide fits for each sample based on both sets of σ {sub ⋆}. We find the fit to the active galactic nucleus sample is shallower than the fit to the quiescent galaxy sample, and that the slopes for each sample are in agreement with previous investigations. However, the intercepts to the quiescent galaxy relations are notably higher than those found in previous studies, due to the systematically lower σ {sub ⋆} measurements that we obtain from IFS. We find that this may be driven, in part, by poorly constrained measurements of bulge effective radius ( r{sub e}) for the quiescent galaxy sample, which may bias the σ {sub ⋆} measurements low. We use these quiescent galaxy parameterizations, as well as one from the literature, to recalculate the virial scaling factor f . Wemore » assess the potential biases in each measurement, and suggest f = 4.82 ± 1.67 as the best currently available estimate. However, we caution that the details of how σ {sub ⋆} is measured can significantly affect f , and there is still much room for improvement.« less

Authors:
;  [1]; ;  [2];  [3]
  1. Department of Physics and Astronomy, Georgia State University, 25 Park Place, Atlanta, GA 30303 (United States)
  2. Dark Cosmology Centre, Niels Bohr Institute, University of Copenhagen, Juliane Maries Vej 30, DK-2100 Copenhagen Ø (Denmark)
  3. Research School of Astronomy and Astrophysics, The Australian National University, Canberra, ACT 2611 (Australia)
Publication Date:
OSTI Identifier:
22654508
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal Letters; Journal Volume: 838; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; CALIBRATION; DISPERSIONS; GALAXIES; SPECTROSCOPY; VELOCITY

Citation Formats

Batiste, Merida, Bentz, Misty C., Raimundo, Sandra I., Vestergaard, Marianne, and Onken, Christopher A., E-mail: batiste@astro.gsu.edu. Recalibration of the M {sub BH}– σ {sub ⋆} Relation for AGN. United States: N. p., 2017. Web. doi:10.3847/2041-8213/AA6571.
Batiste, Merida, Bentz, Misty C., Raimundo, Sandra I., Vestergaard, Marianne, & Onken, Christopher A., E-mail: batiste@astro.gsu.edu. Recalibration of the M {sub BH}– σ {sub ⋆} Relation for AGN. United States. doi:10.3847/2041-8213/AA6571.
Batiste, Merida, Bentz, Misty C., Raimundo, Sandra I., Vestergaard, Marianne, and Onken, Christopher A., E-mail: batiste@astro.gsu.edu. Mon . "Recalibration of the M {sub BH}– σ {sub ⋆} Relation for AGN". United States. doi:10.3847/2041-8213/AA6571.
@article{osti_22654508,
title = {Recalibration of the M {sub BH}– σ {sub ⋆} Relation for AGN},
author = {Batiste, Merida and Bentz, Misty C. and Raimundo, Sandra I. and Vestergaard, Marianne and Onken, Christopher A., E-mail: batiste@astro.gsu.edu},
abstractNote = {We present a recalibration of the M {sub BH}– σ {sub ⋆} relation, based on a sample of 16 reverberation-mapped galaxies with newly determined bulge stellar velocity dispersions ( σ {sub ⋆}) from integral-field spectroscopy (IFS), and a sample of 32 quiescent galaxies with publicly available IFS. For both samples, σ {sub ⋆} is determined via two different methods that are popular in the literature, and we provide fits for each sample based on both sets of σ {sub ⋆}. We find the fit to the active galactic nucleus sample is shallower than the fit to the quiescent galaxy sample, and that the slopes for each sample are in agreement with previous investigations. However, the intercepts to the quiescent galaxy relations are notably higher than those found in previous studies, due to the systematically lower σ {sub ⋆} measurements that we obtain from IFS. We find that this may be driven, in part, by poorly constrained measurements of bulge effective radius ( r{sub e}) for the quiescent galaxy sample, which may bias the σ {sub ⋆} measurements low. We use these quiescent galaxy parameterizations, as well as one from the literature, to recalculate the virial scaling factor f . We assess the potential biases in each measurement, and suggest f = 4.82 ± 1.67 as the best currently available estimate. However, we caution that the details of how σ {sub ⋆} is measured can significantly affect f , and there is still much room for improvement.},
doi = {10.3847/2041-8213/AA6571},
journal = {Astrophysical Journal Letters},
number = 1,
volume = 838,
place = {United States},
year = {Mon Mar 20 00:00:00 EDT 2017},
month = {Mon Mar 20 00:00:00 EDT 2017}
}