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- W2341645793 abstract "We present late-time optical spectroscopy taken with the Large Binocular Telescope's Multi-Object Double Spectrograph, an improved ASAS-SN 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 $sim$20 days before to $sim$750 days after discovery. The proximity of ASASSN-14ae allows us to study the optical evolution of the flare and the transition to a host dominated state with exceptionally high precision. We measure very weak H$alpha$ emission 300 days after discovery ($L_{rm Halpha} simeq 4times 10^{39}$ ergs s$^{-1}$) and the most stringent upper limit to date on the H$alpha$ luminosity $sim$750 days after discovery ($L_{rm Halpha} lesssim 10^{39}$ ergs s$^{-1}$), suggesting that the optical emission arising from a TDE can vanish on a timescale as short as 1 year. 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." @default.
- W2341645793 created "2016-06-24" @default.
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- W2341645793 date "2016-08-03" @default.
- W2341645793 modified "2023-09-27" @default.
- W2341645793 title "Hello darkness my old friend: the fading of the nearby TDE ASASSN-14ae" @default.
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- W2341645793 doi "https://doi.org/10.1093/mnras/stw1928" @default.
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