SN2017jgh: a high-cadence complete shock cooling light curve of a SN IIb with the Kepler telescope

Author:

Armstrong P1ORCID,Tucker B E123,Rest A45,Ridden-Harper R45,Zenati Y5,Piro A L6,Hinton S7ORCID,Lidman C18ORCID,Margheim S9,Narayan G1011,Shaya E12,Garnavich P13ORCID,Kasen D141516,Villar V17,Zenteno A18ORCID,Arcavi I1920,Drout M621,Foley R J22,Wheeler J23ORCID,Anais J24,Campillay A25,Coulter D22,Dimitriadis G22,Jones D22,Kilpatrick C D2627,Muñoz-Elgueta N28,Rojas-Bravo C22,Vargas-González J29,Bulger J30,Chambers K30,Huber M30ORCID,Lowe T30,Magnier E30,Shappee B J30,Smartt S31,Smith K W31,Barclay T3233,Barentsen G34,Dotson J35,Gully-Santiago M23,Hedges C3435,Howell S35,Cody A35,Auchettl K32236,Bódi A3738,Bognár Zs3738,Brimacombe J39,Brown P40,Cseh B37,Galbany L41ORCID,Hiramatsu D4243,Holoien T W-S6,Howell D A4243,Jha S W44ORCID,Könyves-Tóth R3745,Kriskovics L37,McCully C4243,Milne P46,Muñoz J4748,Pan Y49,Pál A37,Sai H50,Sárneczky K37,Smith N46ORCID,Sódor Á3738,Szabó R373851,Szakáts R37,Valenti S52,Vinkó J23374551,Wang X5053,Zhang K54ORCID,Zsidi G375155

Affiliation:

1. Mt Stromlo Observatory, The Research School of Astronomy and Astrophysics, Australian National University, ACT 2601, Australia

2. National Centre for the Public Awareness of Science, Australian National University, Canberra, ACT 2611, Australia

3. The ARC Centre of Excellence for All-Sky Astrophysics in 3 Dimensions (ASTRO 3D), Canberra, ACT 2611, Australia

4. Space Telescope Science Institute, 3700 San Martin Dr., Baltimore, MD 21218, USA

5. Department of Physics and Astronomy, The Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USA

6. The Observatories of the Carnegie Institution for Science, 813 Santa Barbara St., Pasadena, CA 91101, USA

7. School of Mathematics and Physics, University of Queensland, Brisbane, QLD 4072, Australia

8. Centre for Gravitational Astrophysics, College of Science, The Australian National University, ACT 2601, Australia

9. Gemini Observatory/NSF’s NOIRLab, Casilla 603, La Serena, Chile

10. University of Illinois at Urbana-Champaign, 1003 W. Green Str, IL 61801, USA

11. Centre for Astrophysical Surveys, National Centre for Supercomputing Applications, Urbana, IL 61801, USA

12. Astronomy Department, University of Maryland, College Park, MD 20742, USA

13. University of Notre Dame, Notre Dame, IN 46556, USA

14. Department of Astronomy and Theoretical Astrophysics Center, University of California, Berkeley, CA 94720, USA

15. Department of Physics, University of California, Berkeley, CA 94720, USA

16. Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA

17. Department of Astronomy, Columbia University, New York, NY 10027, USA

18. Cerro Tololo Inter-American Observatory, NSF’s National Optical-Infrared Astronomy Research Laboratory, Casilla 603, La Serena, Chile

19. The School of Physics and Astronomy, Tel Aviv University, Tel Aviv 69978, Israel

20. CIFAR Azrieli Global Scholars program, CIFAR, Toronto, Canada

21. David A. Dunlap Department of Astronomy and Astrophysics, University of Toronto, 50 Str George Street, Toronto, Ontario, M5S 3H4, Canada

22. Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USA

23. Department of Astronomy, University of Texas at Austin, Austin, TX 78712, USA

24. Centro de Astronomía (CITEVA), Universidad de Antofagasta, Avenida U. de Antofagasta 02800, Antofagasta, Chile

25. Las Campanas Observatory, Carnegie Observatories, Casilla 601, La Serena, Chile

26. Center for Interdisciplinary Exploration and Research in Astrophysics (CIERA), Evanston, IL 60201, USA

27. Department of Physics and Astronomy, Northwestern University, Evanston, IL 60208, USA

28. Max-Planck-Institut fur Astrophysik, Karl-Schwarzschild-Str 1, D-85748 Garching bei München, Germany

29. Centre for Astrophysics Research, School of Physics, Astronomy and Mathematics, University of Hertfordshire, College Lane, Hatfield AL10 9AB, UK

30. Institute for Astronomy, University of Hawaii at Manoa, 2680 Woodlawn Drive, Honolulu, HI 96822, USA

31. Astrophysics Research Centre, School of Mathematics and Physics,Queen’s University Belfast, BT7 1NN, UK

32. Exoplanets and Stellar Astrophysics Laboratory, Code 667, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA

33. University of Maryland, Baltimore County, 1000 Hilltop Circle, Baltimore, MD 21250, USA

34. Bay Area Environmental Research Institute, P.O. Box 25, Moffett Field, CA 94035, USA

35. NASA Ames Research Center, Moffett Field, CA 94035, USA

36. School of Physics, The University of Melbourne, Parkville, VIC 3010, Australia

37. Konkoly Observatory, Research Centre for Astronomy and Earth Sciences, Eötvös Lorànd Research Network (ELKH), Konkoly Thege Miklòs ùt 15-17, Budapest H-1121, Hungary

38. MTA CSFK Lendület Near-Field Cosmology Research Group, Konkoly Thege Miklós út 15-17, Budapest H-1121, Hungary

39. Coral Towers Observatory, Cairns, QLD 4870, Australia

40. Department of Physics and Astronomy, Texas A&M University, 4242 TAMU, College Station, TX 77843, USA

41. Institute of Space Sciences (ICS, CSIC), Campus UAB, Carrer de Can Magrans, s/n, E-08193 Barcelona, Spain

42. Department of Physics, University of California, Santa Barbara, CA 93106, USA

43. Las Cumbres Observatory, 6740 Cortona Dr, Suite 102, Goleta, CA 93117, USA

44. Department of Physics and Astronomy, Rutgers the State University of New Jersey, 136 Frelinghuysen Road, Piscataway, NJ 08854, USA

45. Institute of Physics, University of Szeged, Dom ter 9, Szeged, H-6720, Hungary

46. Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721, USA

47. Departamento de Astronomía y Astrofísica, Universidad de Valencia, E-46100 Burjassot, Valencia, Spain

48. Observatorio Astronómico, Universidad de Valencia, E-46980 Paterna, Valencia H-1518, Spain

49. Graduate Institute of Astronomy, National Central University, 300 Jhongda Road, 32001 Jhongli, Taiwan

50. Physics Department and Tsinghua Center for Astrophysics (THCA), Tsinghua University, Beijing 100084, China

51. ELTE Eötvös Loránd University, Institute of Physics, Budapest, Hungary

52. Department of Physics and Astronomy, University of California, 1 Shields Avenue, Davis, CA 95616, USA

53. Beijing Planetarium, Beijing Academy of Science and Technology, Beijing 100044, China

54. Physics Department, Tsinghua University, Beijing 100084, China

55. European Southern Observatory, Karl-Schwarzschild-Strasse 2, D-85748 Garching bei München, Germany

Abstract

ABSTRACT SN 2017jgh is a type IIb supernova discovered by Pan-STARRS during the C16/C17 campaigns of the Kepler/K2 mission. Here, we present the Kepler/K2 and ground based observations of SN 2017jgh, which captured the shock cooling of the progenitor shock breakout with an unprecedented cadence. This event presents a unique opportunity to investigate the progenitors of stripped envelope supernovae. By fitting analytical models to the SN 2017jgh light curve, we find that the progenitor of SN 2017jgh was likely a yellow supergiant with an envelope radius of $\sim 50{\!-\!}290\, {\rm R}_{\odot }$, and an envelope mass of $\sim 0{\!-\!}1.7\, {\rm M}_{\odot }$. SN 2017jgh likely had a shock velocity of ∼7500−10 300 km s−1. Additionally, we use the light curve of SN 2017jgh to investigate how early observations of the rise contribute to constraints on progenitor models. Fitting just the ground based observations, we find an envelope radius of $\sim 50{\!-\!}330\, {\rm R}_{\odot }$, an envelope mass of $\sim 0.3{\!-\!}1.7\, {\rm M}_{\odot }$ and a shock velocity of ∼9000−15 000 km s−1. Without the rise, the explosion time cannot be well constrained that leads to a systematic offset in the velocity parameter and larger uncertainties in the mass and radius. Therefore, it is likely that progenitor property estimates through these models may have larger systematic uncertainties than previously calculated.

Funder

National Aeronautics and Space Administration

NSERC

Ministry of Science, Innovation and Universities

NSF

European Union

MINECO

Publisher

Oxford University Press (OUP)

Subject

Space and Planetary Science,Astronomy and Astrophysics

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