Light curves of the neutron star merger GW170817/SSS17a: Implications for r-process nucleosynthesis
M. R. DroutThe Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USAAnthony L. PiroThe Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USAB. J. ShappeeInstitute for Astronomy, University of Hawai’i, 2680 Woodlawn Drive, Honolulu, HI 96822, USAC. D. KilpatrickDepartment of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USAJoshua D. SimonThe Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USAC. ContrerasLas Campanas Observatory, Carnegie Observatories, Casilla 601, La Serena, ChileD. A. CoulterDepartment of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USAR. J. FoleyDepartment of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USAM. R. SiebertDepartment of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USAN. MorrellLas Campanas Observatory, Carnegie Observatories, Casilla 601, La Serena, ChileK. BoutsiaLas Campanas Observatory, Carnegie Observatories, Casilla 601, La Serena, ChileF. Di MilleLas Campanas Observatory, Carnegie Observatories, Casilla 601, La Serena, ChileT. W. S. HoloienThe Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USADaniel KasenDepartments of Physics and Astronomy, 366 LeConte Hall, University of California, Berkeley, CA 94720, USAJuna A. KollmeierThe Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USABarry F. MadoreThe Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USAAndrew MonsonDepartment of Astronomy and Astrophysics, The Pennsylvania State University, 525 Davey Laboratory, University Park, PA 16802, USAAriadna Murguia-BerthierDepartment of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USAY. C. PanDepartment of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USAJ. X. ProchaskaDepartment of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USAE. Ramírez-RuizDark Cosmology Center, Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, 2100 Copenhagen, DenmarkA. RestDepartment of Physics and Astronomy, The Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218, USAC. AdamsDivision of Physics, Mathematics, and Astronomy, California Institute of Technology, Pasadena, CA 91125, USAKatherine AlataloSpace Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USAEduardo BañadosThe Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USAJ. BaughmanMassachusetts Institute of Technology, Cambridge, MA, USATimothy C. BeersDepartment of Physics, University of Notre Dame, Notre Dame, IN 46556, USARebecca A. BernsteinThe Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USAT. BitsakisInstituto de Radioastronomía y Astrofísica, Universidad Nacional Autónoma de México, C.P. 58190, Morelia, MexicoA. CampillayDepartamento de Física y Astronomía, Facultad de Ciencias, Universidad de La Serena, Cisternas 1200, La Serena, ChileTerese T. HansenThe Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USAClare HiggsNational Research Council Herzberg Institute of Astrophysics, 5071 West Saanich Road, Victoria, British Columbia V9E 2E7, CanadaAlexander P. JiThe Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USAG. MaraveliasInstituto de Física y Astronomía, Universidad de Valparaíso, Avenida Gran Bretaña 1111, Casilla 5030, Valparaíso, ChileJ. L. MarshallGeorge P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, and Department of Physics and Astronomy, Texas A&M University, College Station, TX 77843, USAC. Moni BidinInstituto de Astronomía, Universidad Católica del Norte, Avenida Angamos 0610, Antofagasta, ChileJ. L. PrietoMillennium Institute of Astrophysics, Santiago, ChileKaitlin C. RasmussenDepartment of Physics, University of Notre Dame, Notre Dame, IN 46556, USAC. Rojas-BravoDepartment of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064, USAAllison L. StromThe Observatories of the Carnegie Institution for Science, 813 Santa Barbara Street, Pasadena, CA 91101, USANatalie UlloaDepartamento de Física y Astronomía, Facultad de Ciencias, Universidad de La Serena, Cisternas 1200, La Serena, ChileJaime Vargas-GonzálezLas Campanas Observatory, Carnegie Observatories, Casilla 601, La Serena, ChileZhen WanSydney Institute for Astronomy, School of Physics, A28, University of Sydney, NSW 2006, AustraliaDevin D. WhittenDepartment of Physics, University of Notre Dame, Notre Dame, IN 46556, USA
2017en
ABI
Аннотация
On 17 August 2017, gravitational waves (GWs) were detected from a binary neutron star merger, GW170817, along with a coincident short gamma-ray burst, GRB 170817A. An optical transient source, Swope Supernova Survey 17a (SSS17a), was subsequently identified as the counterpart of this event. We present ultraviolet, optical, and infrared light curves of SSS17a extending from 10.9 hours to 18 days postmerger. We constrain the radioactively powered transient resulting from the ejection of neutron-rich material. The fast rise of the light curves, subsequent decay, and rapid color evolution are consistent with multiple ejecta components of differing lanthanide abundance. The late-time light curve indicates that SSS17a produced at least ~0.05 solar masses of heavy elements, demonstrating that neutron star mergers play a role in rapid neutron capture (r-process) nucleosynthesis in the universe.
Перевод пока недоступен
Идентификаторы
Цитирования и источники
Цитирований: 5Использованных источников: 0