SIMBAD references

2018ApJ...863..135C - Astrophys. J., 863, 135-135 (2018/August-3)

A likely supermassive black hole revealed by its EINSTEIN radius in Hubble Frontier Fields images.

CHEN M.C., BROADHURST T., LIM J., DIEGO J.M., OHYAMA Y., FORD H. and BENITEZ N.

Abstract (from CDS):

At cosmological distances, gravitational lensing can in principle provide direct mass measurements of supermassive black holes (SMBHs). Here, we directly estimate the mass of a SMBH in the brightest cluster galaxy (BCG) of MACS J1149.5+2223 at z = 0.54 using one of the multiply lensed images of a background spiral galaxy at z = 1.49 projected close to the BCG. A lensed arc is curved toward the BCG center, corresponding to an intrinsically compact region in one of the spiral arms. This arc has a radius of curvature of only ∼0.''6, betraying the presence of a local compact deflector. Its curvature is most simply reproduced by a point-like object with a mass of 8.4–1.8+4.3×109M, similar to SMBH masses in local elliptical galaxies having comparable luminosities. The SMBH is noticeably offset by 4.4 ± 0.3 kpc from the BCG light center, which is plausibly the result of a kick imparted ∼2.0 x 107 years ago during the merger of two SMBHs, placing it just beyond the stellar core. A similar curvature can be produced by replacing the offset SMBH with a compact galaxy having a mass of ∼2 x 1010 M within a cutoff radius of <4 kpc, and an unusually large M/L> 50(M/L) to make it undetectable in the deep Hubble Frontiers Fields image, at or close to the cluster redshift. However, such a lensing galaxy perturbs the adjacent lensed images in an undesirable way.

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): galaxies: clusters: individual: MACS J1149.5+2223 - galaxies: elliptical and lenticular, cD - galaxies: evolution - galaxies: nuclei - gravitational lensing: strong

Status at CDS : Large table(s) will be appraised for possible ingestion in VizieR.

Simbad objects: 8

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:2018ApJ...863..135C and select 'bookmark this link' or equivalent in the popup menu


2021.06.24-19:35:09

© Université de Strasbourg/CNRS

    • Contact