SIMBAD references

2017ApJ...842..131S - Astrophys. J., 842, 131-131 (2017/June-3)

Chandra survey of nearby galaxies: a significant population of candidate central black holes in late-type galaxies.

SHE R., HO L.C. and FENG H.

Abstract (from CDS):

Based on the Chandra data archive as of 2016 March, we have identified 314 candidate active galactic nuclei in 719 galaxies located closer than 50 Mpc, among them late-type galaxies (Hubble types Sc and later) that previously had been classified from optical observations as containing star-forming (H II) nuclei. These late-type galaxies comprise a valuable subsample to search for low-mass ( 106M) central black holes. For the sample as a whole, the overall dependence of the fraction of active nuclei on galaxy type and nuclear spectral classification is consistent with previous results based on optical surveys. We detect 51 X-ray cores among the 163 H II nuclei and estimate that, very conservatively, ∼74% of them with luminosities above 1038 erg s–1 are not contaminated by X-ray binaries; the fraction increases to ∼92% for X-ray cores with a luminosity of 1039 erg s–1 or higher. This allows us to estimate a black hole occupation fraction of 21% in these late-type galaxies, many of which are bulgeless.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): galaxies: active - galaxies: nuclei - galaxies: Seyfert - X-rays: galaxies - X-rays: galaxies

Simbad objects: 56

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:2017ApJ...842..131S and select 'bookmark this link' or equivalent in the popup menu


2020.01.20-10:49:18

© Université de Strasbourg/CNRS

    • Contact