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Title: A hot and fast ultra-stripped supernova that likely formed a compact neutron star binary

Abstract

Compact neutron star binary systems are produced from binary massive stars through stellar evolution involving up to two supernova explosions. The final stages in the formation of these systems have not been directly observed. Here, we report the discovery of iPTF 14gqr (SN 2014ft), a type Ic supernova with a fast-evolving light curve indicating an extremely low ejecta mass (≈0.2 solar masses) and low kinetic energy (≈2 × 10 50ergs). Early photometry and spectroscopy reveal evidence of shock cooling of an extended helium-rich envelope, likely ejected in an intense pre-explosion mass-loss episode of the progenitor. Taken together, we interpret iPTF 14gqr as evidence for ultra-stripped supernovae that form neutron stars in compact binary systems.

Authors:
ORCiD logo [1]; ORCiD logo [1];  [2]; ORCiD logo [3];  [4];  [5]; ORCiD logo [6]; ORCiD logo [1]; ORCiD logo [1];  [7]; ORCiD logo [8];  [2]; ORCiD logo [9]; ORCiD logo [1];  [1]; ORCiD logo [8];  [2];  [1]; ORCiD logo [10]; ORCiD logo [11] more »; ORCiD logo [12]; ORCiD logo [13];  [14];  [15]; ORCiD logo [8]; ORCiD logo [16]; ORCiD logo [8] « less
  1. California Inst. of Technology (CalTech), Pasadena, CA (United States)
  2. The Weizmann Inst. of Science, Rehovot (Israel)
  3. National Institutes of Natural Sciences, Tokyo (Japan)
  4. Las Cumbres Observatory, Goleta, CA (United States); Univ. of California, Santa Barbara, CA (United States)
  5. Univ. of Washington, Seattle, WA (United States)
  6. NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States); Univ. of Maryland, College Park, MD (United States)
  7. Univ. of Oxford, Oxford (United Kingdom)
  8. Stockholm Univ., Stockholm (Sweden)
  9. The Hebrew Univ. of Jerusalem, Jerusalem (Israel)
  10. Liverpool John Moores Univ., Liverpool (United Kingdom); Max-Planck-Institut für Astrophysik, Garching bei Munchen (Germany)
  11. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States)
  12. Liverpool John Moores Univ., Liverpool (United Kingdom)
  13. Stockholm Univ., Stockholm (Sweden); Univ. of Nova Gorica, Ajdovščina (Slovenia)
  14. The Observatories of the Carnegie Institution for Science, Pasadena, CA (United States)
  15. Astrophysics Group, Cavendish Lab., Cambridge (United Kingdom)
  16. Univ. of Southampton, Southampton (United Kingdom)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1526545
DOE Contract Number:  
AC02-05CH11231
Resource Type:
Journal Article
Journal Name:
Science
Additional Journal Information:
Journal Volume: 362; Journal Issue: 6411; Journal ID: ISSN 0036-8075
Publisher:
AAAS
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS

Citation Formats

De, K., Kasliwal, M. M., Ofek, E. O., Moriya, T. J., Burke, J., Cao, Y., Cenko, S. B., Doran, G. B., Duggan, G. E., Fender, R. P., Fransson, C., Gal-Yam, A., Horesh, A., Kulkarni, S. R., Laher, R. R., Lunnan, R., Manulis, I., Masci, F., Mazzali, P. A., Nugent, P. E., Perley, D. A., Petrushevska, T., Piro, A. L., Rumsey, C., Sollerman, J., Sullivan, M., and Taddia, F. A hot and fast ultra-stripped supernova that likely formed a compact neutron star binary. United States: N. p., 2018. Web. doi:10.1126/science.aas8693.
De, K., Kasliwal, M. M., Ofek, E. O., Moriya, T. J., Burke, J., Cao, Y., Cenko, S. B., Doran, G. B., Duggan, G. E., Fender, R. P., Fransson, C., Gal-Yam, A., Horesh, A., Kulkarni, S. R., Laher, R. R., Lunnan, R., Manulis, I., Masci, F., Mazzali, P. A., Nugent, P. E., Perley, D. A., Petrushevska, T., Piro, A. L., Rumsey, C., Sollerman, J., Sullivan, M., & Taddia, F. A hot and fast ultra-stripped supernova that likely formed a compact neutron star binary. United States. doi:10.1126/science.aas8693.
De, K., Kasliwal, M. M., Ofek, E. O., Moriya, T. J., Burke, J., Cao, Y., Cenko, S. B., Doran, G. B., Duggan, G. E., Fender, R. P., Fransson, C., Gal-Yam, A., Horesh, A., Kulkarni, S. R., Laher, R. R., Lunnan, R., Manulis, I., Masci, F., Mazzali, P. A., Nugent, P. E., Perley, D. A., Petrushevska, T., Piro, A. L., Rumsey, C., Sollerman, J., Sullivan, M., and Taddia, F. Fri . "A hot and fast ultra-stripped supernova that likely formed a compact neutron star binary". United States. doi:10.1126/science.aas8693. https://www.osti.gov/servlets/purl/1526545.
@article{osti_1526545,
title = {A hot and fast ultra-stripped supernova that likely formed a compact neutron star binary},
author = {De, K. and Kasliwal, M. M. and Ofek, E. O. and Moriya, T. J. and Burke, J. and Cao, Y. and Cenko, S. B. and Doran, G. B. and Duggan, G. E. and Fender, R. P. and Fransson, C. and Gal-Yam, A. and Horesh, A. and Kulkarni, S. R. and Laher, R. R. and Lunnan, R. and Manulis, I. and Masci, F. and Mazzali, P. A. and Nugent, P. E. and Perley, D. A. and Petrushevska, T. and Piro, A. L. and Rumsey, C. and Sollerman, J. and Sullivan, M. and Taddia, F.},
abstractNote = {Compact neutron star binary systems are produced from binary massive stars through stellar evolution involving up to two supernova explosions. The final stages in the formation of these systems have not been directly observed. Here, we report the discovery of iPTF 14gqr (SN 2014ft), a type Ic supernova with a fast-evolving light curve indicating an extremely low ejecta mass (≈0.2 solar masses) and low kinetic energy (≈2 × 1050ergs). Early photometry and spectroscopy reveal evidence of shock cooling of an extended helium-rich envelope, likely ejected in an intense pre-explosion mass-loss episode of the progenitor. Taken together, we interpret iPTF 14gqr as evidence for ultra-stripped supernovae that form neutron stars in compact binary systems.},
doi = {10.1126/science.aas8693},
journal = {Science},
issn = {0036-8075},
number = 6411,
volume = 362,
place = {United States},
year = {2018},
month = {10}
}

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