A blue point source at the location of supernova 2011DH
- Autores
- Folatelli, Gastón; Bersten, Melina Cecilia; Benvenuto, Omar Gustavo; Van Dyk, Schuyler D.; Kuncarayakti, Hanindyo; Maeda, Keiichi; Nozawa, Takaya; Nomoto, Ken’ichi; Hamuy, Mario; Quimby, Robert M.
- Año de publicación
- 2014
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We present Hubble Space Telescope (HST) observations of the field of the Type IIb supernova (SN) 2011dh in M51 performed at ≈1161 rest-frame days after explosion using the Wide Field Camera 3 and near-UV filters F225W and F336W. A star-like object is detected in both bands and the photometry indicates it has negative (F225W-F336W) color. The observed object is compatible with the companion of the now-vanished yellow supergiant progenitor predicted in interacting binary models. We consider it unlikely that the SN is undergoing strong interaction and thus estimate that it makes a small contribution to the observed flux. The possibilities of having detected an unresolved light echo or an unrelated object are briefly discussed and judged unlikely. Adopting a possible range of extinction by dust, we constrain parameters of the proposed binary system. In particular, the efficiency of mass accretion onto the binary companion must be below 50%, if no significant extinction is produced by newly formed dust. Further multiband observations are required in order to confirm the identification of the object as the companion star. If confirmed, the companion star would already be dominant in the UV-optical regime, so it would readily provide a unique opportunity to perform a detailed study of its properties.
Facultad de Ciencias Astronómicas y Geofísicas
Instituto de Astrofísica de La Plata - Materia
-
Ciencias Astronómicas
binaries: close
supernovae: general
supernovae: individual (SN 2011dh) - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/84973
Ver los metadatos del registro completo
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A blue point source at the location of supernova 2011DHFolatelli, GastónBersten, Melina CeciliaBenvenuto, Omar GustavoVan Dyk, Schuyler D.Kuncarayakti, HanindyoMaeda, KeiichiNozawa, TakayaNomoto, Ken’ichiHamuy, MarioQuimby, Robert M.Ciencias Astronómicasbinaries: closesupernovae: generalsupernovae: individual (SN 2011dh)We present <i>Hubble Space Telescope</i> (HST) observations of the field of the Type IIb supernova (SN) 2011dh in M51 performed at ≈1161 rest-frame days after explosion using the Wide Field Camera 3 and near-UV filters F225W and F336W. A star-like object is detected in both bands and the photometry indicates it has negative (F225W-F336W) color. The observed object is compatible with the companion of the now-vanished yellow supergiant progenitor predicted in interacting binary models. We consider it unlikely that the SN is undergoing strong interaction and thus estimate that it makes a small contribution to the observed flux. The possibilities of having detected an unresolved light echo or an unrelated object are briefly discussed and judged unlikely. Adopting a possible range of extinction by dust, we constrain parameters of the proposed binary system. In particular, the efficiency of mass accretion onto the binary companion must be below 50%, if no significant extinction is produced by newly formed dust. Further multiband observations are required in order to confirm the identification of the object as the companion star. If confirmed, the companion star would already be dominant in the UV-optical regime, so it would readily provide a unique opportunity to perform a detailed study of its properties.Facultad de Ciencias Astronómicas y GeofísicasInstituto de Astrofísica de La Plata2014info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/84973enginfo:eu-repo/semantics/altIdentifier/issn/2041-8205info:eu-repo/semantics/altIdentifier/doi/10.1088/2041-8205/793/2/L22info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:16:20Zoai:sedici.unlp.edu.ar:10915/84973Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:16:21.159SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
A blue point source at the location of supernova 2011DH |
| title |
A blue point source at the location of supernova 2011DH |
| spellingShingle |
A blue point source at the location of supernova 2011DH Folatelli, Gastón Ciencias Astronómicas binaries: close supernovae: general supernovae: individual (SN 2011dh) |
| title_short |
A blue point source at the location of supernova 2011DH |
| title_full |
A blue point source at the location of supernova 2011DH |
| title_fullStr |
A blue point source at the location of supernova 2011DH |
| title_full_unstemmed |
A blue point source at the location of supernova 2011DH |
| title_sort |
A blue point source at the location of supernova 2011DH |
| dc.creator.none.fl_str_mv |
Folatelli, Gastón Bersten, Melina Cecilia Benvenuto, Omar Gustavo Van Dyk, Schuyler D. Kuncarayakti, Hanindyo Maeda, Keiichi Nozawa, Takaya Nomoto, Ken’ichi Hamuy, Mario Quimby, Robert M. |
| author |
Folatelli, Gastón |
| author_facet |
Folatelli, Gastón Bersten, Melina Cecilia Benvenuto, Omar Gustavo Van Dyk, Schuyler D. Kuncarayakti, Hanindyo Maeda, Keiichi Nozawa, Takaya Nomoto, Ken’ichi Hamuy, Mario Quimby, Robert M. |
| author_role |
author |
| author2 |
Bersten, Melina Cecilia Benvenuto, Omar Gustavo Van Dyk, Schuyler D. Kuncarayakti, Hanindyo Maeda, Keiichi Nozawa, Takaya Nomoto, Ken’ichi Hamuy, Mario Quimby, Robert M. |
| author2_role |
author author author author author author author author author |
| dc.subject.none.fl_str_mv |
Ciencias Astronómicas binaries: close supernovae: general supernovae: individual (SN 2011dh) |
| topic |
Ciencias Astronómicas binaries: close supernovae: general supernovae: individual (SN 2011dh) |
| dc.description.none.fl_txt_mv |
We present <i>Hubble Space Telescope</i> (HST) observations of the field of the Type IIb supernova (SN) 2011dh in M51 performed at ≈1161 rest-frame days after explosion using the Wide Field Camera 3 and near-UV filters F225W and F336W. A star-like object is detected in both bands and the photometry indicates it has negative (F225W-F336W) color. The observed object is compatible with the companion of the now-vanished yellow supergiant progenitor predicted in interacting binary models. We consider it unlikely that the SN is undergoing strong interaction and thus estimate that it makes a small contribution to the observed flux. The possibilities of having detected an unresolved light echo or an unrelated object are briefly discussed and judged unlikely. Adopting a possible range of extinction by dust, we constrain parameters of the proposed binary system. In particular, the efficiency of mass accretion onto the binary companion must be below 50%, if no significant extinction is produced by newly formed dust. Further multiband observations are required in order to confirm the identification of the object as the companion star. If confirmed, the companion star would already be dominant in the UV-optical regime, so it would readily provide a unique opportunity to perform a detailed study of its properties. Facultad de Ciencias Astronómicas y Geofísicas Instituto de Astrofísica de La Plata |
| description |
We present <i>Hubble Space Telescope</i> (HST) observations of the field of the Type IIb supernova (SN) 2011dh in M51 performed at ≈1161 rest-frame days after explosion using the Wide Field Camera 3 and near-UV filters F225W and F336W. A star-like object is detected in both bands and the photometry indicates it has negative (F225W-F336W) color. The observed object is compatible with the companion of the now-vanished yellow supergiant progenitor predicted in interacting binary models. We consider it unlikely that the SN is undergoing strong interaction and thus estimate that it makes a small contribution to the observed flux. The possibilities of having detected an unresolved light echo or an unrelated object are briefly discussed and judged unlikely. Adopting a possible range of extinction by dust, we constrain parameters of the proposed binary system. In particular, the efficiency of mass accretion onto the binary companion must be below 50%, if no significant extinction is produced by newly formed dust. Further multiband observations are required in order to confirm the identification of the object as the companion star. If confirmed, the companion star would already be dominant in the UV-optical regime, so it would readily provide a unique opportunity to perform a detailed study of its properties. |
| publishDate |
2014 |
| dc.date.none.fl_str_mv |
2014 |
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article |
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publishedVersion |
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http://sedici.unlp.edu.ar/handle/10915/84973 |
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eng |
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eng |
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