SIMBAD references

2016MNRAS.462.3993B - Mon. Not. R. Astron. Soc., 462, 3993-4000 (2016/November-2)

Hello darkness my old friend: the fading of the nearby TDE ASASSN-14ae.

BROWN J.S., SHAPPEE B.J., HOLOIEN T.W.-S., STANEK K.Z., KOCHANEK C.S. and PRIETO J.L.

Abstract (from CDS):

We present late-time optical spectroscopy taken with the Large Binocular Telescope's Multi-Object Double Spectrograph, an improved All-Sky Automated Survey for SuperNovae pre-discovery non-detection, and late-time Swift observations of the nearby (d = 193 Mpc, z = 0.0436) tidal disruption event (TDE) ASASSN-14ae. Our observations span from ∼20 d before to ∼750 d after discovery. The proximity of ASASSN-14ae allows us to study the optical evolution of the flare and the transition to a host-dominated state with exceptionally high precision. We measure very weak Hα emission 300 d after discovery (L_H α_ ≃ 4 x 1039 erg s–1) and the most stringent upper limit to date on the Hα luminosity ∼750 d after discovery (L_H α_ <= 1039 erg s–1), suggesting that the optical emission arising from a TDE can vanish on a time-scale as short as 1 yr. Our results have important implications for both spectroscopic detection of TDE candidates at late times, as well as the nature of TDE host galaxies themselves.

Abstract Copyright: © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): accretion, accretion discs - black hole physics - galaxies: nuclei - galaxies: nuclei

Simbad objects: 9

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2021.04.13-13:29:06

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