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Sn 2017dio

Title: Sn 2017dio: A Type-ic Supernova Exploding In A Hydrogen-rich Circumstellar Medium.
Name(s): Kuncarayakti, Hanindyo, author
Maeda, Keiichi, author
Ashall, Christopher J., author
Prentice, Simon J., author
Mattila, Seppo, author
Kankare, Erkki, author
Fransson, Claes, author
Lundqvist, Peter, author
Pastorello, Andrea, author
Leloudas, Giorgos, author
Anderson, Joseph P., author
Benetti, Stefano, author
Bersten, Melina C., author
Cappellaro, Enrico, author
Cartier, Regis, author
Denneau, Larry, author
Della Valle, Massimo, author
Elias-Rosa, Nancy, author
Folatelli, Gaston, author
Fraser, Morgan, author
Galbany, Lluis, author
Gall, Christa, author
Gal-Yam, Avishay, author
Gutierrez, Claudia P., author
Hamanowicz, Aleksandra, author
Heinze, Ari, author
Inserra, Cosimo, author
Kangas, Tuomas, author
Mazzali, Paolo, author
Melandri, Andrea, author
Pignata, Giuliano, author
Rest, Armin, author
Reynolds, Thomas, author
Roy, Rupak, author
Smartt, Stephen J., author
Smith, Ken W., author
Sollerman, Jesper, author
Somero, Auni, author
Stalder, Brian, author
Stritzinger, Maximilian, author
Taddia, Francesco, author
Tomasella, Lina, author
Tonry, John, author
Weiland, Henry, author
Young, David R., author
Type of Resource: text
Genre: Journal Article
Journal Article
Date Issued: 2018-02-10
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: SN 2017dio shows both spectral characteristics of a type-Ic supernova (SN) and signs of a hydrogen-rich circumstellar medium (CSM). Prominent, narrow emission lines of H and He are superposed on the continuum. Subsequent evolution revealed that the SN ejecta are interacting with the CSM. The initial SN Ic identification was confirmed by removing the CSM interaction component from the spectrum and comparing with known SNe Ic and, reversely, adding a CSM interaction component to the spectra of known SNe Ic and comparing them to SN 2017dio. Excellent agreement was obtained with both procedures, reinforcing the SN Ic classification. The light curve constrains the pre-interaction SN Ic peak absolute magnitude to be around M-g = -17.6 mag. No evidence of significant extinction is found, ruling out a brighter luminosity required by an SN Ia classification. These pieces of evidence support the view that SN 2017dio is an SN Ic, and therefore the first firm case of an SN Ic with signatures of hydrogen-rich CSM in the early spectrum. The CSM is unlikely to have been shaped by steady-state stellar winds. The mass loss of the progenitor star must have been intense, M similar to 0.02 (epsilon(H alpha)/0.01)(-1) (nu(wind)/500 km s(-1)) (nu(shock)/10,000 km s(-1))M--3(circle dot) yr(-1), peaking at a few decades before the SN. Such a high mass-loss rate might have been experienced by the progenitor through eruptions or binary stripping.
Identifier: FSU_libsubv1_wos_000424684500005 (IID), 10.3847/2041-8213/aaaa1a (DOI)
Keywords: emission, supernovae: general, star, ia supernova, core-collapse, envelope, supernovae: individual (SN 2017dio)
Publication Note: The publisher's version of record is available at
Persistent Link to This Record:
Owner Institution: FSU
Is Part Of: Astrophysical Journal Letters.
Issue: iss. 1, vol. 854

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Kuncarayakti, H., Maeda, K., Ashall, C. J., Prentice, S. J., Mattila, S., Kankare, E., … Young, D. R. (2018). Sn 2017dio: A Type-ic Supernova Exploding In A Hydrogen-rich Circumstellar Medium. Astrophysical Journal Letters. Retrieved from