Calán/Tololo Survey (original) (raw)
The Calán/Tololo Supernova Survey was a supernova survey that ran from 1989 to 1995 at the University of Chile and the Cerro Tololo Inter-American Observatory to measure a Hubble diagram out to redshifts of 0.1. It was founded by Mario Hamuy, José Maza Sancho, Mark M. Phillips, and Nicholas B. Suntzeff in 1989 out of discussions at the UC Santa Cruz meeting on supernovae on how to improve the Hubble diagram using Type Ia supernovae. It was also motivated by the suggestion of Allan Sandage to restart a supernova survey after the Sandage and Tammann survey failed due to poor quality photographic plates in 1986. The Survey built on the original supernova survey of Maza done at the f/3 Maksutov Camera at the Cerro Roble Observatory of the University of Chile between 1979 and 1984. The Survey u
| Property | Value |
|---|---|
| dbo:abstract | The Calán/Tololo Supernova Survey was a supernova survey that ran from 1989 to 1995 at the University of Chile and the Cerro Tololo Inter-American Observatory to measure a Hubble diagram out to redshifts of 0.1. It was founded by Mario Hamuy, José Maza Sancho, Mark M. Phillips, and Nicholas B. Suntzeff in 1989 out of discussions at the UC Santa Cruz meeting on supernovae on how to improve the Hubble diagram using Type Ia supernovae. It was also motivated by the suggestion of Allan Sandage to restart a supernova survey after the Sandage and Tammann survey failed due to poor quality photographic plates in 1986. The Survey built on the original supernova survey of Maza done at the f/3 Maksutov Camera at the Cerro Roble Observatory of the University of Chile between 1979 and 1984. The Survey used the CTIO Curtis Schmidt telescope with IIa-O photographic plates, each plate covering a field of 25 sq-deg on the sky. The plates were developed and sent to Santiago Chile the next morning and searched for supernovae at the Department of Astronomy at the University of Chile. Any supernova candidates were then observed the next night using the 0.9m telescope at CTIO with a CCD camera. This was one of the first studies done in astronomy where the telescope time was scheduled to observe objects not yet discovered. The survey discovered 50 supernovae between 1990 and 1993, of which 32 were Type Ia supernovae. The survey provided a uniform photometric and spectroscopic dataset of all classes of supernovae, which led to the discovery of a method of using Type Ia supernovae as standard candles, the Phillips relationship, as well as providing data for a Hubble diagram of Type II supernovae using the Expanding Photosphere method. In 1994, the Calán/Tololo team formed a parallel project, the High-Z Supernova Search Team, organized by Nicholas Suntzeff and Brian Schmidt, which later discovered the accelerated expansion of the universe in 1998. The calibration of Type Ia supernovae as standard candles led to the precise measurements of the Hubble Constant H0 and the deceleration parameter q0, the latter indicating the presence of a dark energy or cosmological constant dominating the mass/energy of the Universe. The Calán/Tololo data of nearby Type Ia supernovae were used as the anchors for the Hubble flow measurements both by the High-Z Supernova Search Team and the Supernova Cosmology Project. Their pioneering work was cited in the award of the 2011 Nobel Prize in Physics (en) Miembros del equipo del Proyecto Calán Tololo en 2002. De izquierda a derecha: Mark Phillips, Nicholas Suntzeff (ambos estadounidenses), José Maza y Mario Hamuy (ambos chilenos). El Proyecto Calán Tololo (C&T) fue una investigación astronómica de estudio de supernovas realizada en Chile entre los años 1989 y 1996, desarrollada por el Departamento de Astronomía de la Facultad de Ciencias Físicas y Matemáticas de la Universidad de Chile, ubicado en Cerro Calán, Santiago; y el Observatorio Interamericano Cerro Tololo, ubicado en la Región de Coquimbo, administrado por la , AURA. El proyecto hizo aportes significativos a la medición de distancias en el Universo, contribuyendo a que en 1998 se descubriera la aceleración de la expansión del Universo. Este hallazgo fue realizado por dos equipos científicos internacionales: The High-Z SN Search Team y el Supernova Cosmology Project. Como consecuencia de este descubrimiento, el 4 de octubre de 2011 recibieron el premio Nobel de Física los astrónomos Saul Perlmutter, Brian P. Schmidt y Adam Riess. La Real Academia de Ciencias de Suecia (ente que entrega el Premio Nobel), hizo un reconocimiento explícito al proyecto Calán Tololo, en su «scientific background». (es) |
| dbo:thumbnail | wiki-commons:Special:FilePath/Calan_Tololo_Team_Members.jpg?width=300 |
| dbo:wikiPageID | 24551879 (xsd:integer) |
| dbo:wikiPageLength | 4654 (xsd:nonNegativeInteger) |
| dbo:wikiPageRevisionID | 1113308934 (xsd:integer) |
| dbo:wikiPageWikiLink | dbr:Brian_Schmidt dbr:Hubble_Constant dbr:Hubble_diagram dbr:José_Maza_Sancho dbr:Charge-coupled_device dbr:Universe dbr:University_of_Chile dbr:Deceleration_parameter dbc:University_of_Chile dbr:Cosmological_constant dbr:Phillips_relationship dbr:Cerro_El_Roble dbr:Type_II_supernova dbr:Allan_Sandage dbc:Observational_astronomy dbr:Dark_energy dbr:Accelerating_universe dbr:Nobel_Prize_in_Physics dbr:Mario_Hamuy dbc:Astronomical_surveys dbc:Supernovae dbr:Supernova dbr:High-Z_Supernova_Search_Team dbr:Mark_M._Phillips dbr:Nicholas_B._Suntzeff dbr:Cerro_Tololo_Inter-American_Observatory dbr:CTIO dbr:Maksutov_telescope dbr:Supernova_Cosmology_Project dbr:Type_Ia_supernovae dbr:Hubble_flow dbr:Nicholas_Suntzeff dbr:Gustav_Tammann dbr:Standard_candles dbr:File:Calan_Tololo_Team_Members.jpg |
| dbp:wikiPageUsesTemplate | dbt:Portal_bar dbt:Reflist dbt:Supernovae dbt:Infobox_astronomical_survey |
| dct:subject | dbc:University_of_Chile dbc:Observational_astronomy dbc:Astronomical_surveys dbc:Supernovae |
| gold:hypernym | dbr:Survey |
| rdf:type | yago:WikicatAstronomyProjects yago:Abstraction100002137 yago:Act100030358 yago:Activity100407535 yago:Event100029378 yago:PsychologicalFeature100023100 yago:Work100575741 yago:YagoPermanentlyLocatedEntity dbo:Organisation yago:Undertaking100795720 |
| rdfs:comment | The Calán/Tololo Supernova Survey was a supernova survey that ran from 1989 to 1995 at the University of Chile and the Cerro Tololo Inter-American Observatory to measure a Hubble diagram out to redshifts of 0.1. It was founded by Mario Hamuy, José Maza Sancho, Mark M. Phillips, and Nicholas B. Suntzeff in 1989 out of discussions at the UC Santa Cruz meeting on supernovae on how to improve the Hubble diagram using Type Ia supernovae. It was also motivated by the suggestion of Allan Sandage to restart a supernova survey after the Sandage and Tammann survey failed due to poor quality photographic plates in 1986. The Survey built on the original supernova survey of Maza done at the f/3 Maksutov Camera at the Cerro Roble Observatory of the University of Chile between 1979 and 1984. The Survey u (en) Miembros del equipo del Proyecto Calán Tololo en 2002. De izquierda a derecha: Mark Phillips, Nicholas Suntzeff (ambos estadounidenses), José Maza y Mario Hamuy (ambos chilenos). El Proyecto Calán Tololo (C&T) fue una investigación astronómica de estudio de supernovas realizada en Chile entre los años 1989 y 1996, desarrollada por el Departamento de Astronomía de la Facultad de Ciencias Físicas y Matemáticas de la Universidad de Chile, ubicado en Cerro Calán, Santiago; y el Observatorio Interamericano Cerro Tololo, ubicado en la Región de Coquimbo, administrado por la , AURA. (es) |
| rdfs:label | Calán/Tololo Survey (en) Proyecto Calán Tololo (es) |
| owl:sameAs | freebase:Calán/Tololo Survey wikidata:Calán/Tololo Survey dbpedia-es:Calán/Tololo Survey https://global.dbpedia.org/id/4fSMf |
| prov:wasDerivedFrom | wikipedia-en:Calán/Tololo_Survey?oldid=1113308934&ns=0 |
| foaf:depiction | wiki-commons:Special:FilePath/Calan_Tololo_Team_Members.jpg |
| foaf:isPrimaryTopicOf | wikipedia-en:Calán/Tololo_Survey |
| is dbo:wikiPageRedirects of | dbr:Calán/Tololo_Supernova_Survey |
| is dbo:wikiPageWikiLink of | dbr:Timothy_Schrabback dbr:Adam_Riess dbr:Cerro_Tololo_Inter-American_Observatory dbr:Calán/Tololo_Supernova_Survey |
| is foaf:primaryTopic of | wikipedia-en:Calán/Tololo_Survey |
