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PreprintCC BY 4.0arXiv

Black Hole Mass Estimation of a Background Quasar in the Vicinity of the cD Galaxy Holm 15A

  • Emmanuel Ríos-López
  • Omar López-Cruz
  • Ana Luisa González-Morán
  • Christopher Añorve
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Abstract

This study analyzes spectra from the central region of the galaxy cluster Abell 85 observed with GTC/OSIRIS, focusing on the cD galaxy Holm 15A and the point-like X-ray source SDSS J004150.75-091824.3, projected 13.74arcsec from Holm 15A. For the latter, we found it is a background quasar with a redshift of 1.56386 ± 0.00397, ruling out the possibility of it being a rogue BH gravitationally bound to Holm 15A. In addition, using single-epoch spectroscopy, we report that the quasar J004150 hosts a Supermassive Black Hole (SMBH) with a mass of log(MBH/M⊙) = 8.72 ± 0.26.

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Cite

BibTeXRIS
BibTeX
@misc{rioslopez2026black,
  title = {{Black Hole Mass Estimation of a Background Quasar in the Vicinity of the cD Galaxy Holm 15A}},
  author = {Emmanuel Ríos-López and Omar López-Cruz and Ana Luisa González-Morán and Christopher Añorve},
  howpublished = {arXiv},
  year = {2026},
  month = nov,
  doi = {10.48550/arxiv.2611.05316},
  eprint = {2611.05316},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2611.05316},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - Black Hole Mass Estimation of a Background Quasar in the Vicinity of the cD Galaxy Holm 15A
AU  - Emmanuel Ríos-López
AU  - Omar López-Cruz
AU  - Ana Luisa González-Morán
AU  - Christopher Añorve
PY  - 2026
DA  - 2026/11/03
PB  - arXiv
DO  - 10.48550/arxiv.2611.05316
UR  - https://arxiv.org/abs/2611.05316
AB  - This study analyzes spectra from the central region of the galaxy cluster Abell 85 observed with GTC/OSIRIS, focusing on the cD galaxy Holm 15A and the point-like X-ray source SDSS J004150.75-091824.3, projected 13.74arcsec from Holm 15A. For the latter, we found it is a background quasar with a redshift of 1.56386 ± 0.00397, ruling out the possibility of it being a rogue BH gravitationally bound to Holm 15A. In addition, using single-epoch spectroscopy, we report that the quasar J004150 hosts a Supermassive Black Hole (SMBH) with a mass of log(M_BH/M_⊙) = 8.72 ± 0.26.
ER  -