The blue supergiant progenitor of the Supernova Imposter at 2019krl
- Autores
- Andrews, Jennifer E.; Jencson, Jacob E.; Van Dyk, Schuyler D.; Smith, Nathan; Neustadt, Jack M. M.; Sand, David J.; Kreckel, K.; Kochanek, C.S.; Valenti, S.; Strader, Jay; Bersten, Melina Cecilia; Blanc, Guillermo A.; Bostroem, K. Azalee; Brink, Thomas G.; Emsellem, Eric; Filippenko, Alexei V.; Folatelli, Gaston; Kasliwal, Mansi; Masci, Frank J.; McElroy, Rebecca; Milisavljevic, Dan; Santoro, Francesco; Szalai, Tamás
- Año de publicación
- 2021
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Extensive archival Hubble Space Telescope, Spitzer Space Telescope, and Large Binocular Telescope imaging of the recent intermediate-luminosity transient, AT 2019krl in M74, reveal a bright optical and mid-infrared progenitor star. While the optical peak of the event was missed, a peak was detected in the infrared with an absolute magnitude of M 4.5 μm = -18.4 mag, leading us to infer a visual-wavelength peak absolute magnitude of -13.5 to -14.5. The pre-discovery light curve indicated no outbursts over the previous 16 yr. The colors, magnitudes, and inferred temperatures of the progenitor best match a 13-14 M o˙ yellow or blue supergiant (BSG) if only foreground extinction is taken into account, or a hotter and more massive star if any additional local extinction is included. A pre-eruption spectrum of the star reveals strong Hα and [N ii] emission with wings extending to 2000 km s-1. The post-eruption spectrum is fairly flat and featureless with only Hα, Na i D, [Ca ii], and the Ca ii triplet in emission. As in many previous intermediate-luminosity transients, AT 2019krl shows remarkable observational similarities to luminous blue variable (LBV) giant eruptions, SN 2008S-like events, and massive-star mergers. However, the information about the pre-eruption star favors either a relatively unobscured BSG or a more extinguished LBV with M > 20 Mo˙ likely viewed pole-on.
Fil: Andrews, Jennifer E.. University of Arizona; Estados Unidos
Fil: Jencson, Jacob E.. University of Arizona; Estados Unidos
Fil: Van Dyk, Schuyler D.. Spitzer Science Center; Estados Unidos
Fil: Smith, Nathan. University of Arizona; Estados Unidos
Fil: Neustadt, Jack M. M.. Ohio State University; Estados Unidos
Fil: Sand, David J.. University of Arizona; Estados Unidos
Fil: Kreckel, K.. Astronomisches Rechen-institut Heidelberg; Alemania
Fil: Kochanek, C.S.. Ohio State University; Estados Unidos
Fil: Valenti, S.. University of California at Davis; Estados Unidos
Fil: Strader, Jay. Michigan State University; Estados Unidos
Fil: Bersten, Melina Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Blanc, Guillermo A.. Universidad de Chile; Chile
Fil: Bostroem, K. Azalee. University of California at Davis; Estados Unidos
Fil: Brink, Thomas G.. University of California at Berkeley; Estados Unidos
Fil: Emsellem, Eric. European Southern Observatory; Alemania
Fil: Filippenko, Alexei V.. University of California at Berkeley; Estados Unidos
Fil: Folatelli, Gaston. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Kasliwal, Mansi. California Institute of Technology; Estados Unidos
Fil: Masci, Frank J.. Spitzer Science Center; Estados Unidos
Fil: McElroy, Rebecca. The University Of Sydney; Australia
Fil: Milisavljevic, Dan. Purdue University; Estados Unidos
Fil: Santoro, Francesco. Max Planck Institut für Astronomie; Alemania
Fil: Szalai, Tamás. University of Szeged; Hungría - Materia
-
SUPERNOVAS
Hydrodynamics - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
.jpg)
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/152741
Ver los metadatos del registro completo
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The blue supergiant progenitor of the Supernova Imposter at 2019krlAndrews, Jennifer E.Jencson, Jacob E.Van Dyk, Schuyler D.Smith, NathanNeustadt, Jack M. M.Sand, David J.Kreckel, K.Kochanek, C.S.Valenti, S.Strader, JayBersten, Melina CeciliaBlanc, Guillermo A.Bostroem, K. AzaleeBrink, Thomas G.Emsellem, EricFilippenko, Alexei V.Folatelli, GastonKasliwal, MansiMasci, Frank J.McElroy, RebeccaMilisavljevic, DanSantoro, FrancescoSzalai, TamásSUPERNOVASHydrodynamicshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Extensive archival Hubble Space Telescope, Spitzer Space Telescope, and Large Binocular Telescope imaging of the recent intermediate-luminosity transient, AT 2019krl in M74, reveal a bright optical and mid-infrared progenitor star. While the optical peak of the event was missed, a peak was detected in the infrared with an absolute magnitude of M 4.5 μm = -18.4 mag, leading us to infer a visual-wavelength peak absolute magnitude of -13.5 to -14.5. The pre-discovery light curve indicated no outbursts over the previous 16 yr. The colors, magnitudes, and inferred temperatures of the progenitor best match a 13-14 M o˙ yellow or blue supergiant (BSG) if only foreground extinction is taken into account, or a hotter and more massive star if any additional local extinction is included. A pre-eruption spectrum of the star reveals strong Hα and [N ii] emission with wings extending to 2000 km s-1. The post-eruption spectrum is fairly flat and featureless with only Hα, Na i D, [Ca ii], and the Ca ii triplet in emission. As in many previous intermediate-luminosity transients, AT 2019krl shows remarkable observational similarities to luminous blue variable (LBV) giant eruptions, SN 2008S-like events, and massive-star mergers. However, the information about the pre-eruption star favors either a relatively unobscured BSG or a more extinguished LBV with M > 20 Mo˙ likely viewed pole-on.Fil: Andrews, Jennifer E.. University of Arizona; Estados UnidosFil: Jencson, Jacob E.. University of Arizona; Estados UnidosFil: Van Dyk, Schuyler D.. Spitzer Science Center; Estados UnidosFil: Smith, Nathan. University of Arizona; Estados UnidosFil: Neustadt, Jack M. M.. Ohio State University; Estados UnidosFil: Sand, David J.. University of Arizona; Estados UnidosFil: Kreckel, K.. Astronomisches Rechen-institut Heidelberg; AlemaniaFil: Kochanek, C.S.. Ohio State University; Estados UnidosFil: Valenti, S.. University of California at Davis; Estados UnidosFil: Strader, Jay. Michigan State University; Estados UnidosFil: Bersten, Melina Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; ArgentinaFil: Blanc, Guillermo A.. Universidad de Chile; ChileFil: Bostroem, K. Azalee. University of California at Davis; Estados UnidosFil: Brink, Thomas G.. University of California at Berkeley; Estados UnidosFil: Emsellem, Eric. European Southern Observatory; AlemaniaFil: Filippenko, Alexei V.. University of California at Berkeley; Estados UnidosFil: Folatelli, Gaston. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; ArgentinaFil: Kasliwal, Mansi. California Institute of Technology; Estados UnidosFil: Masci, Frank J.. Spitzer Science Center; Estados UnidosFil: McElroy, Rebecca. The University Of Sydney; AustraliaFil: Milisavljevic, Dan. Purdue University; Estados UnidosFil: Santoro, Francesco. Max Planck Institut für Astronomie; AlemaniaFil: Szalai, Tamás. University of Szeged; HungríaIOP Publishing2021-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/152741Andrews, Jennifer E.; Jencson, Jacob E.; Van Dyk, Schuyler D.; Smith, Nathan; Neustadt, Jack M. M.; et al.; The blue supergiant progenitor of the Supernova Imposter at 2019krl; IOP Publishing; Astrophysical Journal; 917; 2; 8-2021; 1-220004-637XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.3847/1538-4357/ac09e1info:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.3847/1538-4357/ac09e1info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:34:17Zoai:ri.conicet.gov.ar:11336/152741instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:34:17.601CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
| dc.title.none.fl_str_mv |
The blue supergiant progenitor of the Supernova Imposter at 2019krl |
| title |
The blue supergiant progenitor of the Supernova Imposter at 2019krl |
| spellingShingle |
The blue supergiant progenitor of the Supernova Imposter at 2019krl Andrews, Jennifer E. SUPERNOVAS Hydrodynamics |
| title_short |
The blue supergiant progenitor of the Supernova Imposter at 2019krl |
| title_full |
The blue supergiant progenitor of the Supernova Imposter at 2019krl |
| title_fullStr |
The blue supergiant progenitor of the Supernova Imposter at 2019krl |
| title_full_unstemmed |
The blue supergiant progenitor of the Supernova Imposter at 2019krl |
| title_sort |
The blue supergiant progenitor of the Supernova Imposter at 2019krl |
| dc.creator.none.fl_str_mv |
Andrews, Jennifer E. Jencson, Jacob E. Van Dyk, Schuyler D. Smith, Nathan Neustadt, Jack M. M. Sand, David J. Kreckel, K. Kochanek, C.S. Valenti, S. Strader, Jay Bersten, Melina Cecilia Blanc, Guillermo A. Bostroem, K. Azalee Brink, Thomas G. Emsellem, Eric Filippenko, Alexei V. Folatelli, Gaston Kasliwal, Mansi Masci, Frank J. McElroy, Rebecca Milisavljevic, Dan Santoro, Francesco Szalai, Tamás |
| author |
Andrews, Jennifer E. |
| author_facet |
Andrews, Jennifer E. Jencson, Jacob E. Van Dyk, Schuyler D. Smith, Nathan Neustadt, Jack M. M. Sand, David J. Kreckel, K. Kochanek, C.S. Valenti, S. Strader, Jay Bersten, Melina Cecilia Blanc, Guillermo A. Bostroem, K. Azalee Brink, Thomas G. Emsellem, Eric Filippenko, Alexei V. Folatelli, Gaston Kasliwal, Mansi Masci, Frank J. McElroy, Rebecca Milisavljevic, Dan Santoro, Francesco Szalai, Tamás |
| author_role |
author |
| author2 |
Jencson, Jacob E. Van Dyk, Schuyler D. Smith, Nathan Neustadt, Jack M. M. Sand, David J. Kreckel, K. Kochanek, C.S. Valenti, S. Strader, Jay Bersten, Melina Cecilia Blanc, Guillermo A. Bostroem, K. Azalee Brink, Thomas G. Emsellem, Eric Filippenko, Alexei V. Folatelli, Gaston Kasliwal, Mansi Masci, Frank J. McElroy, Rebecca Milisavljevic, Dan Santoro, Francesco Szalai, Tamás |
| author2_role |
author author author author author author author author author author author author author author author author author author author author author author |
| dc.subject.none.fl_str_mv |
SUPERNOVAS Hydrodynamics |
| topic |
SUPERNOVAS Hydrodynamics |
| purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
| dc.description.none.fl_txt_mv |
Extensive archival Hubble Space Telescope, Spitzer Space Telescope, and Large Binocular Telescope imaging of the recent intermediate-luminosity transient, AT 2019krl in M74, reveal a bright optical and mid-infrared progenitor star. While the optical peak of the event was missed, a peak was detected in the infrared with an absolute magnitude of M 4.5 μm = -18.4 mag, leading us to infer a visual-wavelength peak absolute magnitude of -13.5 to -14.5. The pre-discovery light curve indicated no outbursts over the previous 16 yr. The colors, magnitudes, and inferred temperatures of the progenitor best match a 13-14 M o˙ yellow or blue supergiant (BSG) if only foreground extinction is taken into account, or a hotter and more massive star if any additional local extinction is included. A pre-eruption spectrum of the star reveals strong Hα and [N ii] emission with wings extending to 2000 km s-1. The post-eruption spectrum is fairly flat and featureless with only Hα, Na i D, [Ca ii], and the Ca ii triplet in emission. As in many previous intermediate-luminosity transients, AT 2019krl shows remarkable observational similarities to luminous blue variable (LBV) giant eruptions, SN 2008S-like events, and massive-star mergers. However, the information about the pre-eruption star favors either a relatively unobscured BSG or a more extinguished LBV with M > 20 Mo˙ likely viewed pole-on. Fil: Andrews, Jennifer E.. University of Arizona; Estados Unidos Fil: Jencson, Jacob E.. University of Arizona; Estados Unidos Fil: Van Dyk, Schuyler D.. Spitzer Science Center; Estados Unidos Fil: Smith, Nathan. University of Arizona; Estados Unidos Fil: Neustadt, Jack M. M.. Ohio State University; Estados Unidos Fil: Sand, David J.. University of Arizona; Estados Unidos Fil: Kreckel, K.. Astronomisches Rechen-institut Heidelberg; Alemania Fil: Kochanek, C.S.. Ohio State University; Estados Unidos Fil: Valenti, S.. University of California at Davis; Estados Unidos Fil: Strader, Jay. Michigan State University; Estados Unidos Fil: Bersten, Melina Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina Fil: Blanc, Guillermo A.. Universidad de Chile; Chile Fil: Bostroem, K. Azalee. University of California at Davis; Estados Unidos Fil: Brink, Thomas G.. University of California at Berkeley; Estados Unidos Fil: Emsellem, Eric. European Southern Observatory; Alemania Fil: Filippenko, Alexei V.. University of California at Berkeley; Estados Unidos Fil: Folatelli, Gaston. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina Fil: Kasliwal, Mansi. California Institute of Technology; Estados Unidos Fil: Masci, Frank J.. Spitzer Science Center; Estados Unidos Fil: McElroy, Rebecca. The University Of Sydney; Australia Fil: Milisavljevic, Dan. Purdue University; Estados Unidos Fil: Santoro, Francesco. Max Planck Institut für Astronomie; Alemania Fil: Szalai, Tamás. University of Szeged; Hungría |
| description |
Extensive archival Hubble Space Telescope, Spitzer Space Telescope, and Large Binocular Telescope imaging of the recent intermediate-luminosity transient, AT 2019krl in M74, reveal a bright optical and mid-infrared progenitor star. While the optical peak of the event was missed, a peak was detected in the infrared with an absolute magnitude of M 4.5 μm = -18.4 mag, leading us to infer a visual-wavelength peak absolute magnitude of -13.5 to -14.5. The pre-discovery light curve indicated no outbursts over the previous 16 yr. The colors, magnitudes, and inferred temperatures of the progenitor best match a 13-14 M o˙ yellow or blue supergiant (BSG) if only foreground extinction is taken into account, or a hotter and more massive star if any additional local extinction is included. A pre-eruption spectrum of the star reveals strong Hα and [N ii] emission with wings extending to 2000 km s-1. The post-eruption spectrum is fairly flat and featureless with only Hα, Na i D, [Ca ii], and the Ca ii triplet in emission. As in many previous intermediate-luminosity transients, AT 2019krl shows remarkable observational similarities to luminous blue variable (LBV) giant eruptions, SN 2008S-like events, and massive-star mergers. However, the information about the pre-eruption star favors either a relatively unobscured BSG or a more extinguished LBV with M > 20 Mo˙ likely viewed pole-on. |
| publishDate |
2021 |
| dc.date.none.fl_str_mv |
2021-08 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
| format |
article |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/152741 Andrews, Jennifer E.; Jencson, Jacob E.; Van Dyk, Schuyler D.; Smith, Nathan; Neustadt, Jack M. M.; et al.; The blue supergiant progenitor of the Supernova Imposter at 2019krl; IOP Publishing; Astrophysical Journal; 917; 2; 8-2021; 1-22 0004-637X CONICET Digital CONICET |
| url |
http://hdl.handle.net/11336/152741 |
| identifier_str_mv |
Andrews, Jennifer E.; Jencson, Jacob E.; Van Dyk, Schuyler D.; Smith, Nathan; Neustadt, Jack M. M.; et al.; The blue supergiant progenitor of the Supernova Imposter at 2019krl; IOP Publishing; Astrophysical Journal; 917; 2; 8-2021; 1-22 0004-637X CONICET Digital CONICET |
| dc.language.none.fl_str_mv |
eng |
| language |
eng |
| dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.3847/1538-4357/ac09e1 info:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.3847/1538-4357/ac09e1 |
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info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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openAccess |
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https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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application/pdf application/pdf |
| dc.publisher.none.fl_str_mv |
IOP Publishing |
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IOP Publishing |
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reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
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dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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