AT 2022aedm and a New Class of Luminous, Fast-cooling Transients in Elliptical Galaxies

AT 2022aedm and a New Class of Luminous, Fast-cooling Transients in Elliptical Galaxies

We present the discovery and extensive follow-up of a remarkable fast-evolving optical transient, AT 2022aedm, detected by the Asteroid Terrestrial impact Last Alert Survey (ATLAS). In the ATLAS o band, AT 2022aedm exhibited a rise time of 9 ± 1 days, reaching a luminous peak with M _g ≈ −22 mag. It...

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Main Authors: M. Nicholl, S. Srivastav, M. D. Fulton, S. Gomez, M. E. Huber, S. R. Oates, P. Ramsden, L. Rhodes, S. J. Smartt, K. W. Smith, A. Aamer, J. P. Anderson, F. E. Bauer, E. Berger, T. de Boer, K. C. Chambers, P. Charalampopoulos, T.-W. Chen, R. P. Fender, M. Fraser, H. Gao, D. A. Green, L. Galbany, B. P. Gompertz, M. Gromadzki, C. P. Gutiérrez, D. A. Howell, C. Inserra, P. G. Jonker, M. Kopsacheili, T. B. Lowe, E. A. Magnier, C. McCully, S. L. McGee, T. Moore, T. E. Müller-Bravo, M. Newsome, E. Padilla Gonzalez, C. Pellegrino, T. Pessi, M. Pursiainen, A. Rest, E. J. Ridley, B. J. Shappee, X. Sheng, G. P. Smith, G. Terreran, M. A. Tucker, J. Vinkó, R. J. Wainscoat, P. Wiseman, D. R. Young
Format: Article
Language:English
Published: IOP Publishing 2023-01-01
Series:The Astrophysical Journal Letters
Subjects:
Transient sources
Supernovae
Tidal disruption
Online Access:https://doi.org/10.3847/2041-8213/acf0ba

Internet

https://doi.org/10.3847/2041-8213/acf0ba

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