The Type II-plateau Supernova 2017eaw in NGC 6946 and Its Red Supergiant Progenitor
Por:
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
Publicada:
20 abr 2019
Resumen:
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
similar to 15 M-circle dot.
Filiaciones:
Van Dyk, Schuyler D.:
CALTECH, Spitzer Sci Ctr, IPAC, Mailcode 100-22, Pasadena, CA 91125 USA
Caltech/Spitzer Science Center, Caltech/IPAC, Mailcode 100-22, Pasadena, CA 91125, United States
Zheng, WeiKang:
Univ Calif Berkeley, Dept Astron, 601 Campbell Hall, Berkeley, CA 94720 USA
Department of Astronomy, University of California, Berkeley, CA 94720-3411, United States
Maund, Justyn R.:
Univ Sheffield, Dept Phys & Astron, Hicks Bldg,Hounsfield Rd, Sheffield S3 7RH, S Yorkshire, England
Department of Physics and Astronomy, University of Sheffield, Hicks Building, Hounsfield Road, Sheffield, S3 7RH, United Kingdom
Brink, Thomas G.:
Univ Calif Berkeley, Dept Astron, 601 Campbell Hall, Berkeley, CA 94720 USA
Department of Astronomy, University of California, Berkeley, CA 94720-3411, United States
Srinivasan, Sundar:
Acad Sinica, Inst Astron & Astrophys, 11F Astron Math Bldg,1 Roosevelt Rd,Sec 4, Taipei 10617, Taiwan
Univ Nacl Autonoma Mexico, Inst Radioastron & Astrofis, Antigua Carretera Patzcuaro 8701 Ex Hda, Morelia 58089, Michoacan, Mexico
Institute of Astronomy and Astrophysics, Academia Sinica, 11F, Astronomy-Mathematics Building, No. 1, Roosevelt Rd, Taipei, 10617, Taiwan
Instituto de Radioastronomía y Astrofísica, Universidad Nacional Autonóma de México, Antigua Carretera a Pátzcuaro # 8701 Ex-Had, San José de la Huerta, Michoacán, Morelia, C.P. 58089, Mexico
Andrews, Jennifer E.:
Univ Arizona, Steward Observ, 933 N Cherry Ave, Tucson, AZ 85721 USA
Steward Observatory, University of Arizona, 933 N. Cherry Avenue, Tucson, AZ 85721, United States
Smith, Nathan:
Univ Arizona, Steward Observ, 933 N Cherry Ave, Tucson, AZ 85721 USA
Steward Observatory, University of Arizona, 933 N. Cherry Avenue, Tucson, AZ 85721, United States
Leonard, Douglas C.:
San Diego State Univ, Dept Astron, San Diego, CA 92182 USA
Department of Astronomy, San Diego State University, San Diego, CA 92182-1221, United States
Morozova, Viktoriya:
Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA
Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544, United States
Filippenko, Alexei V.:
Univ Calif Berkeley, Dept Astron, 601 Campbell Hall, Berkeley, CA 94720 USA
Univ Calif Berkeley, Miller Inst Basic Res Sci, Berkeley, CA 94720 USA
Department of Astronomy, University of California, Berkeley, CA 94720-3411, United States
Miller Senior Fellow, Miller Institute for Basic Research in Science, University of California, Berkeley, CA 94720, United States
Conner, Brody:
Purdue Univ, Dept Phys & Astron, 525 Northwestern Ave, W Lafayette, IN 47907 USA
Department of Physics and Astronomy, Purdue University, 525 Northwestern Avenue, West Lafayette, IN 47907, United States
Milisavljevic, Dan:
Purdue Univ, Dept Phys & Astron, 525 Northwestern Ave, W Lafayette, IN 47907 USA
Department of Physics and Astronomy, Purdue University, 525 Northwestern Avenue, West Lafayette, IN 47907, United States
de Jaeger, Thomas:
Univ Calif Berkeley, Dept Astron, 601 Campbell Hall, Berkeley, CA 94720 USA
Department of Astronomy, University of California, Berkeley, CA 94720-3411, United States
Long, Knox S.:
Space Telescope Sci Inst, 3700 San Martin Dr, Baltimore, MD 21218 USA
Eureka Sci Inc, 2452 Delmer St,Suite 100, Oakland, CA 94602 USA
Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, United States
Eureka Scientific, Inc., 2452 Delmer Street, Oakland, CA 94602-3017, United States
Isaacson, Howard:
Univ Calif Berkeley, Dept Astron, 601 Campbell Hall, Berkeley, CA 94720 USA
Department of Astronomy, University of California, Berkeley, CA 94720-3411, United States
Crossfield, Ian J. M.:
MIT, Dept Phys, 77 Massachusetts Ave, Cambridge, MA 02139 USA
Kosiarek, Molly R.:
Univ Calif Santa Cruz, Santa Cruz, CA 95064 USA
University of California Santa Cruz, Santa Cruz, CA 95064, United States
Howard, Andrew W.:
CALTECH, Pasadena, CA 91125 USA
California Institute of Technology, Pasadena, CA 91125, United States
Fox, Ori D.:
Space Telescope Sci Inst, 3700 San Martin Dr, Baltimore, MD 21218 USA
Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, United States
Kelly, Patrick L.:
Univ Minnesota, Minnesota Inst Astrophys, Coll Sci & Engn, 115 Union St SE, Minneapolis, MN 55455 USA
College of Science and Engineering, Minnesota Institute for Astrophysics, University of Minnesota, 115 Union St. SE, Minneapolis, MN 55455, United States
Piro, Anthony L.:
Observ Carnegie Inst Sci, 813 Santa Barbara St, Pasadena, CA 91101 USA
Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, United States
Littlefair, Stuart P.:
Univ Sheffield, Dept Phys & Astron, Hicks Bldg,Hounsfield Rd, Sheffield S3 7RH, S Yorkshire, England
Department of Physics and Astronomy, University of Sheffield, Hicks Building, Hounsfield Road, Sheffield, S3 7RH, United Kingdom
Dhillon, Vik S.:
Univ Sheffield, Dept Phys & Astron, Hicks Bldg,Hounsfield Rd, Sheffield S3 7RH, S Yorkshire, England
Inst Astrofis Canarias, E-38205 Tenerife, Spain
Department of Physics and Astronomy, University of Sheffield, Hicks Building, Hounsfield Road, Sheffield, S3 7RH, United Kingdom
Instituto de Astrofisica de Canarias, La Laguna, Tenerife, E-38205, Spain
Wilson, Richard:
Univ Durham, Dept Phys, Ctr Adv Instrumentat, South Rd, Durham DH1 3LE, England
Center for Advanced Instrumentation, Department of Physics, University of Durham, South Road, Durham, DH1 3LE, United Kingdom
Butterley, Timothy:
Univ Durham, Dept Phys, Ctr Adv Instrumentat, South Rd, Durham DH1 3LE, England
Center for Advanced Instrumentation, Department of Physics, University of Durham, South Road, Durham, DH1 3LE, United Kingdom
Yunus, Sameen:
Univ Calif Berkeley, Dept Astron, 601 Campbell Hall, Berkeley, CA 94720 USA
Department of Astronomy, University of California, Berkeley, CA 94720-3411, United States
Channa, Sanyum:
Univ Calif Berkeley, Dept Astron, 601 Campbell Hall, Berkeley, CA 94720 USA
Department of Astronomy, University of California, Berkeley, CA 94720-3411, United States
Jeffers, Benjamin T.:
Univ Calif Berkeley, Dept Astron, 601 Campbell Hall, Berkeley, CA 94720 USA
Department of Astronomy, University of California, Berkeley, CA 94720-3411, United States
Falcon, Edward:
Univ Calif Berkeley, Dept Astron, 601 Campbell Hall, Berkeley, CA 94720 USA
Department of Astronomy, University of California, Berkeley, CA 94720-3411, United States
Ross, Timothy W.:
Univ Calif Berkeley, Dept Astron, 601 Campbell Hall, Berkeley, CA 94720 USA
Department of Astronomy, University of California, Berkeley, CA 94720-3411, United States
Hestenes, Julia C.:
Univ Calif Berkeley, Dept Astron, 601 Campbell Hall, Berkeley, CA 94720 USA
Department of Astronomy, University of California, Berkeley, CA 94720-3411, United States
Stegman, Samantha M.:
Univ Calif Berkeley, Dept Astron, 601 Campbell Hall, Berkeley, CA 94720 USA
Department of Astronomy, University of California, Berkeley, CA 94720-3411, United States
Zhang, Keto:
Univ Calif Berkeley, Dept Astron, 601 Campbell Hall, Berkeley, CA 94720 USA
Department of Astronomy, University of California, Berkeley, CA 94720-3411, United States
Kumar, Sahana:
Univ Calif Berkeley, Dept Astron, 601 Campbell Hall, Berkeley, CA 94720 USA
Florida State Univ, Dept Phys, 77 Chieftain Way, Tallahassee, FL 32306 USA
Department of Astronomy, University of California, Berkeley, CA 94720-3411, United States
Department of Physics, Florida State University, 77 Chieftain Way, Tallahassee, FL 32306, United States
Department of Physics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA, United States
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