SIMBAD references

2017ApJ...841..118T - Astrophys. J., 841, 118-118 (2017/June-1)

PHL 6625: a minor merger-associated QSO behind NGC 247.

TAO L., FENG H., SHEN Y., HO L.C., GE J., KAARET P., MAO S. and LIU X.

Abstract (from CDS):

PHL 6625 is a luminous quasi-stellar object (QSO) at z = 0.3954 located behind the nearby galaxy NGC 247 (z = 0.0005). Hubble Space Telescope observations revealed an arc structure associated with it. We report on spectroscopic observations with the Very Large Telescope and multiwavelength observations from the radio to the X-ray band for the system, suggesting that PHL 6625 and the arc are a close pair of merging galaxies, instead of a strong gravitational lens system. The QSO host galaxy is estimated to be (4-28) x 1010 M and the mass of the companion galaxy is estimated to be M* = (6.8 ± 2.4) x 109 M, suggesting that this is a minor merger system. The QSO displays typical broad emission lines, from which a black hole mass of about (2-5) x 108 M and an Eddington ratio of about 0.01-0.05 can be inferred. The system represents an interesting and rare case where a QSO is associated with an ongoing minor merger, analogous to Arp 142.

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

Journal keyword(s): galaxies: active - galaxies: interactions - galaxies: nuclei - quasars: supermassive black holes - quasars: supermassive black holes

Simbad objects: 6

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2021.01.17-14:42:18

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