Schuyler D. Van Dyk
The Type II-plateau Supernova 2017eaw in NGC 6946 and Its Red Supergiant Progenitor
Van Dyk, Schuyler D.; Zheng, WeiKang; Maund, Justyn R.; Brink, Thomas G.; Srinivasan, Sundar; Andrews, Jennifer E.; Smith, Nathan; Leonard, Douglas C.; Morozova, Viktoriya; Filippenko, Alexei V.; Conner, Brody; Milisavljevic, Dan; de Jaeger, Thomas; Long, Knox S.; Isaacson, Howard; Crossfield, Ian J.M.; Kosiarek, Molly R.; Howard, Andrew W.; Fox, Ori D.; Kelly, Patrick L.; Piro, Anthony L.; Littlefair, Stuart P.; Dhillon, Vik S.; Wilson, Richard; Butterley, Timothy; Yunus, Sameen; Channa, Sanyum; Jeffers, Benjamin T.; Falcon, Edward; Ross, Timothy W.; Hestenes, Julia C.; Stegman, Samantha M.; Zhang, Keto; Kumar, Sahana
Authors
WeiKang Zheng
Justyn R. Maund
Thomas G. Brink
Sundar Srinivasan
Jennifer E. Andrews
Nathan Smith
Douglas C. Leonard
Viktoriya Morozova
Alexei V. Filippenko
Brody Conner
Dan Milisavljevic
Thomas de Jaeger
Knox S. Long
Howard Isaacson
Ian J.M. Crossfield
Molly R. Kosiarek
Andrew W. Howard
Ori D. Fox
Patrick L. Kelly
Anthony L. Piro
Stuart P. Littlefair
Vik S. Dhillon
Richard Wilson
Timothy Butterley timothy.butterley@durham.ac.uk
Post Doctoral Research Associate
Sameen Yunus
Sanyum Channa
Benjamin T. Jeffers
Edward Falcon
Timothy W. Ross
Julia C. Hestenes
Samantha M. Stegman
Keto Zhang
Sahana Kumar
Abstract
We present extensive optical photometric and spectroscopic observations, from 4 to 482 days after explosion, of the Type II-plateau (II-P) supernova (SN) 2017eaw in NGC 6946. SN 2017eaw is a normal SN II-P intermediate in properties between, for example, SN 1999em and SN 2012aw and the more luminous SN 2004et, also in NGC 6946. We have determined that the extinction to SN 2017eaw is primarily due to the Galactic foreground and that the SN site metallicity is likely subsolar. We have also independently confirmed a tip-of-the-red-giant-branch (TRGB) distance to NGC 6946 of 7.73 ± 0.78 Mpc. The distances to the SN that we have also estimated via both the standardized candle method and expanding photosphere method corroborate the TRGB distance. We confirm the SN progenitor identity in pre-explosion archival Hubble Space Telescope (HST) and Spitzer Space Telescope images, via imaging of the SN through our HST Target of Opportunity program. Detailed modeling of the progenitor’s spectral energy distribution indicates that the star was a dusty, luminous red supergiant consistent with an initial mass of ∼15 Me.
Citation
Van Dyk, S. D., Zheng, W., Maund, J. R., Brink, T. G., Srinivasan, S., Andrews, J. E., …Kumar, S. (2019). The Type II-plateau Supernova 2017eaw in NGC 6946 and Its Red Supergiant Progenitor. Astrophysical Journal, 875(2), Article 136. https://doi.org/10.3847/1538-4357/ab1136
Journal Article Type | Article |
---|---|
Acceptance Date | Mar 12, 2019 |
Online Publication Date | Apr 24, 2019 |
Publication Date | Apr 30, 2019 |
Deposit Date | Jun 6, 2019 |
Publicly Available Date | Jun 6, 2019 |
Journal | Astrophysical Journal |
Print ISSN | 0004-637X |
Publisher | American Astronomical Society |
Peer Reviewed | Peer Reviewed |
Volume | 875 |
Issue | 2 |
Article Number | 136 |
DOI | https://doi.org/10.3847/1538-4357/ab1136 |
Public URL | https://durham-repository.worktribe.com/output/1300278 |
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Copyright Statement
© 2019. The American Astronomical Society. All rights reserved.
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