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An infrared transient from a star engulfing a planet.
De, Kishalay; MacLeod, Morgan; Karambelkar, Viraj; Jencson, Jacob E; Chakrabarty, Deepto; Conroy, Charlie; Dekany, Richard; Eilers, Anna-Christina; Graham, Matthew J; Hillenbrand, Lynne A; Kara, Erin; Kasliwal, Mansi M; Kulkarni, S R; Lau, Ryan M; Loeb, Abraham; Masci, Frank; Medford, Michael S; Meisner, Aaron M; Patel, Nimesh; Quiroga-Nuñez, Luis Henry; Riddle, Reed L; Rusholme, Ben; Simcoe, Robert; Sjouwerman, Loránt O; Teague, Richard; Vanderburg, Andrew.
Afiliação
  • De K; Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA, USA. kde1@mit.edu.
  • MacLeod M; Center for Astrophysics/Harvard & Smithsonian, Cambridge, MA, USA.
  • Karambelkar V; Cahill Center for Astrophysics, California Institute of Technology, Pasadena, CA, USA.
  • Jencson JE; Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD, USA.
  • Chakrabarty D; Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA, USA.
  • Conroy C; Center for Astrophysics/Harvard & Smithsonian, Cambridge, MA, USA.
  • Dekany R; Caltech Optical Observatories, California Institute of Technology, Pasadena, CA, USA.
  • Eilers AC; Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA, USA.
  • Graham MJ; Cahill Center for Astrophysics, California Institute of Technology, Pasadena, CA, USA.
  • Hillenbrand LA; Cahill Center for Astrophysics, California Institute of Technology, Pasadena, CA, USA.
  • Kara E; Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA, USA.
  • Kasliwal MM; Cahill Center for Astrophysics, California Institute of Technology, Pasadena, CA, USA.
  • Kulkarni SR; Cahill Center for Astrophysics, California Institute of Technology, Pasadena, CA, USA.
  • Lau RM; NSF's National Optical-Infrared Astronomy Research Laboratory, Tucson, AZ, USA.
  • Loeb A; Center for Astrophysics/Harvard & Smithsonian, Cambridge, MA, USA.
  • Masci F; Black Hole Initiative, Harvard University, Cambridge, MA, USA.
  • Medford MS; IPAC, California Institute of Technology, Pasadena, CA, USA.
  • Meisner AM; Department of Astronomy, University of California, Berkeley, Berkeley, CA, USA.
  • Patel N; Lawrence Berkeley National Laboratory, Berkeley, CA, USA.
  • Quiroga-Nuñez LH; NSF's National Optical-Infrared Astronomy Research Laboratory, Tucson, AZ, USA.
  • Riddle RL; Center for Astrophysics/Harvard & Smithsonian, Cambridge, MA, USA.
  • Rusholme B; Department of Aerospace, Physics and Space Sciences, Florida Institute of Technology, Melbourne, FL, USA.
  • Simcoe R; Caltech Optical Observatories, California Institute of Technology, Pasadena, CA, USA.
  • Sjouwerman LO; IPAC, California Institute of Technology, Pasadena, CA, USA.
  • Teague R; Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA, USA.
  • Vanderburg A; National Radio Astronomy Observatory, Array Operations Center, Socorro, NM, USA.
Nature ; 617(7959): 55-60, 2023 05.
Article em En | MEDLINE | ID: mdl-37138107
ABSTRACT
Planets with short orbital periods (roughly under 10 days) are common around stars like the Sun1,2. Stars expand as they evolve and thus we expect their close planetary companions to be engulfed, possibly powering luminous mass ejections from the host star3-5. However, this phase has never been directly observed. Here we report observations of ZTF SLRN-2020, a short-lived optical outburst in the Galactic disk accompanied by bright and long-lived infrared emission. The resulting light curve and spectra share striking similarities with those of red novae6,7-a class of eruptions now confirmed8 to arise from mergers of binary stars. Its exceptionally low optical luminosity (approximately 1035 erg s-1) and radiated energy (approximately 6.5 × 1041 erg) point to the engulfment of a planet of fewer than roughly ten Jupiter masses by its Sun-like host star. We estimate the Galactic rate of such subluminous red novae to be roughly between 0.1 and several per year. Future Galactic plane surveys should routinely identify these, showing the demographics of planetary engulfment and the ultimate fate of planets in the inner Solar System.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Nature Ano de publicação: 2023 Tipo de documento: Article País de afiliação: Estados Unidos
Texto completo
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Nature Ano de publicação: 2023 Tipo de documento: Article País de afiliação: Estados Unidos