| Description: |
Tidal disruption events (TDEs) offer a unique way to study dormant black holes. While the number of observed TDEs has grown thanks to the emergence of wide-field surveys in the past few decades, questions regarding the nature of the observed optical, UV, and X-ray emission remain. We present a uniformly selected sample of 30 spectroscopically classified TDEs from the Zwicky Transient Facility Phase I survey operations with follow-up Swift UV and X-ray observations. Through our investigation into correlations between light-curve properties, we recover a shallow positive correlation between the peak bolometric luminosity and decay timescales. We introduce a new spectroscopic class of TDE, TDE-featureless, which are characterized by featureless optical spectra. The new TDE-featureless class shows larger peak bolometric luminosities, peak blackbody temperatures, and peak blackbody radii. We examine the differences between the X-ray bright and X-ray faint populations of TDEs in this sample, finding that X-ray bright TDEs show higher peak blackbody luminosities than the X-ray faint subsample. This sample of optically selected TDEs is the largest sample of TDEs from a single survey yet, and the systematic discovery, classification, and follow-up of this sample allows for robust characterization of TDE properties, an important stepping stone looking forward toward the Rubin era. |
| Relation: |
https://researchonline.ljmu.ac.uk/id/eprint/19098/1/Hammerstein_2023_ApJ_942_9.pdf; Hammerstein, E ORCID logoorcid:0000-0002-5698-8703 , van Velzen, S ORCID logoorcid:0000-0002-3859-8074 , Gezari, S ORCID logoorcid:0000-0003-3703-5154 , Cenko, SB ORCID logoorcid:0000-0003-1673-970X , Yao, Y ORCID logoorcid:0000-0001-6747-8509 , Ward, C ORCID logoorcid:0000-0002-4557-6682 , Frederick, S ORCID logoorcid:0000-0001-9676-730X , Villanueva, N ORCID logoorcid:0000-0001-6917-4656 , Somalwar, JJ ORCID logoorcid:0000-0001-8426-5732 , Graham, MJ ORCID logoorcid:0000-0002-3168-0139 , Kulkarni, SR ORCID logoorcid:0000-0001-5390-8563 , Stern, D ORCID logoorcid:0000-0003-2686-9241 , Andreoni, I ORCID logoorcid:0000-0002-8977-1498 , Bellm, EC ORCID logoorcid:0000-0001-8018-5348 , Dekany, R ORCID logoorcid:0000-0002-5884-7867 , Dhawan, S ORCID logoorcid:0000-0002-2376-6979 , Drake, AJ ORCID logoorcid:0000-0003-0228-6594 , Fremling, C ORCID logoorcid:0000-0002-4223-103X , Gatkine, P ORCID logoorcid:0000-0002-1955-2230 , Groom, SL ORCID logoorcid:0000-0001-5668-3507 , Ho, AYQ ORCID logoorcid:0000-0002-9017-3567 , Kasliwal, MM ORCID logoorcid:0000-0002-5619-4938 , Karambelkar, V ORCID logoorcid:0000-0003-2758-159X , Kool, EC ORCID logoorcid:0000-0002-7252-3877 , Masci, FJ ORCID logoorcid:0000-0002-8532-9395 , Medford, MS ORCID logoorcid:0000-0002-7226-0659 , Perley, DA ORCID logoorcid:0000-0001-8472-1996 , Purdum, J ORCID logoorcid:0000-0003-1227-3738 , Roestel, JV ORCID logoorcid:0000-0002-2626-2872 , Sharma, Y ORCID logoorcid:0000-0003-4531-1745 , Sollerman, J ORCID logoorcid:0000-0003-1546-6615 , Taggart, K ORCID logoorcid:0000-0002-5748-4558 and Yan, L ORCID logoorcid:0000-0003-1710-9339 (2022) The Final Season Reimagined: 30 Tidal Disruption Events from the ZTF-I Survey. Astrophysical Journal, 942 (1). ISSN 1538-4357 |