Searching for Supernovae in HETDEX Data Release 3

Vinkó, József; Thomas, Benjamin P.; Wheeler, J. Craig; Ho, Anna Y.Q.; Cooper, Erin Mentuch; Gebhardt, Karl; Ciardullo, Robin; Farrow, Daniel J.; Hill, Gary J.; Jäger, Zoltán; Kollatschny, Wolfram; Liu, Chenxu; Regős, Enikő; Sárneczky, Krisztián

Abstract

We have extracted 636 spectra taken at the positions of 583 transient sources from the third data release of the Hobby-Eberly Telescope Dark Energy eXperiment (HETDEX). The transients were discovered by the Zwicky Transient Facility (ZTF) during 2018-2022. The HETDEX spectra provide a potential means to obtain classifications for a large number of objects found by photometric surveys for free. We attempt to explore and classify the spectra by utilizing several template-matching techniques. We have identified two transient sources, ZTF20aatpoos = AT 2020fiz and ZTF19abdkelq, as supernova (SN) candidates. We classify AT 2020fiz as a Type IIP SN observed ∼10 days after explosion, and we propose ZTF19abdkelq as a likely Type Ia SN caught ∼40 days after maximum light. ZTF photometry of these two sources are consistent with their classifications as SNe. Beside these two objects, we have confirmed several ZTF transients as variable active galactic nuclei based on their spectral appearance, and determined the host galaxy types of several other ZTF transients.

Citation

Vinkó, J., Thomas, B. P., Wheeler, J. C., Ho, A. Y., Cooper, E. M., Gebhardt, K., …Sárneczky, K. (2023). Searching for Supernovae in HETDEX Data Release 3. The Astrophysical journal, 946(1), Article 31. https://doi.org/10.3847/1538-4357/acbfa8

• Journal Article Type: Article
• Acceptance Date: Feb 20, 2023
• Online Publication Date: Mar 24, 2023
• Publication Date: Mar 20, 2023
• Deposit Date: Apr 18, 2024
• Publicly Available Date: Apr 23, 2024
• Journal: Astrophysical Journal
• Print ISSN: 0004-637X
• Electronic ISSN: 1538-4357
• Publisher: American Astronomical Society
• Peer Reviewed: Peer Reviewed
• Volume: 946
• Issue: 1
• Article Number: 31
• DOI: https://doi.org/10.3847/1538-4357/acbfa8
• Public URL: https://hull-repository.worktribe.com/output/4627048