Donatiello I (original) (raw)
Donatiello I, also known as Mirach's Goblin, is a dwarf spheroidal galaxy in the constellation Andromeda, located between 8.1 and 11.4 million light-years from Earth. It is a possible satellite galaxy of the dwarf lenticular galaxy NGC 404, "Mirach's Ghost", which is situated 60 arcminutes away. It is otherwise one of the most isolated dwarf spheroidal galaxies known, being separated from NGC 404 by around 211,000 light-years. The galaxy is named after its discoverer, amateur astrophotographer Giuseppe Donatiello, who sighted the galaxy in a 2016 review of his archival long exposures from 2010 and 2013. Follow-up observations with the Roque de los Muchachos Observatory led to a scientific paper on its discovery being published in December 2018.
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| dbo:abstract | Donatiello I, also known as Mirach's Goblin, is a dwarf spheroidal galaxy in the constellation Andromeda, located between 8.1 and 11.4 million light-years from Earth. It is a possible satellite galaxy of the dwarf lenticular galaxy NGC 404, "Mirach's Ghost", which is situated 60 arcminutes away. It is otherwise one of the most isolated dwarf spheroidal galaxies known, being separated from NGC 404 by around 211,000 light-years. The galaxy is named after its discoverer, amateur astrophotographer Giuseppe Donatiello, who sighted the galaxy in a 2016 review of his archival long exposures from 2010 and 2013. Follow-up observations with the Roque de los Muchachos Observatory led to a scientific paper on its discovery being published in December 2018. (en) Donatiello I es una galaxia enana esferoidal, ubicada a 9,78 millones años luz de la tierra, en la constelación de Andrómeda. La galaxia fue descubierta por el astrónomo italiano aficionado mientras analizaba imágenes de la constelación Andrómeda tomadas entre los años 2010 y 2013 desde el parque Nacional del Pollino, al sur de Italia. La galaxia fue confirmada posteriormente con imágenes tomadas por el Telescopio Nazionale Galileo (TNG) en 2016. Otros estudios realizados por un equipo de astrónomos que utilizaron imágenes tomadas por el Gran Telescopio Canarias (GTC) confirmaron que se encuentra fuera del grupo local de galaxias. Estos datos, junto a los recogidos por el TNG, indican que la galaxia enana está compuesta principalmente por estrellas muy antiguas y que su contenido estelar es similar al de galaxias compañeras de la Vía Láctea, como Draco o Ursa Minor. (es) Donatiello I (Do I dSph), surnommée le Gobelin de Mirach, est une galaxie naine sphéroïdale située à 3,3 Mpc de la Terre dans la constellation d'Andromède à environ 1° de l'étoile Mirach (Beta Andromedae). La galaxie a été découverte le 23 septembre 2016 par l'astronome amateur italien au cours d'une auto-recherche dans la zone du ciel entourant la galaxie d'Andromède (Messier 31). Les observations effectuées avec le Telescopio Nazionale Galileo (3,58 m) et avec le Gran Telescopio Canarias (10,4 m) ont permis d’établir que l’objet se situe à 10,7 millions d’années-lumière. (fr) Donatiello I, nota anche con la sigla Do I, è una galassia nana sferoidale sita nella costellazione di Andromeda a circa 1 grado dalla stella Mirach. La galassia è stata scoperta dall'astrofilo italiano Giuseppe Donatiello nel corso di ricerche autonome. (it) |
| dbo:thumbnail | wiki-commons:Special:FilePath/Donatiello_I_TNG_official_(cropped).jpg?width=300 |
| dbo:type | dbr:Dwarf_spheroidal_galaxy |
| dbo:wikiPageExternalLink | https://astrobites.org/2018/11/22/ghosts_and_goblins/%7Cwebsite= http://www.iac.es/divulgacion.php%3Fop1=16&id=1486&lang=en%7Cwebsite= https://web.archive.org/web/20190221115511/https:/arxiv.org/abs/1810.04741 https://web.archive.org/web/20190221130811/http:/www.iac.es/divulgacion.php%3Fop1=16&id=1486&lang=en%7Carchive-date=21 https://web.archive.org/web/20190221131751/https:/astrobites.org/2018/11/22/ghosts_and_goblins/%7Carchive-date=21 https://www.skyandtelescope.com/astronomy-news/dwarf-galaxy-found-by-amateur/%7Cwebsite= https://archive.today/20190222183532/https:/www.skyandtelescope.com/astronomy-news/dwarf-galaxy-found-by-amateur/%7Carchive-date=22 https://arxiv.org/abs/1810.04741 |
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| dbp:alt | Map of the constellation Andromeda (en) Photograph of a small, faint galaxy appearing as a smudge in the centre of a starfield (en) |
| dbp:caption | 0001-11-27 (xsd:gMonthDay) Location of Donatiello I in the constellation Andromeda (en) |
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| dbp:id | Donatiello+I+Dwarf+Galaxy (en) |
| dbp:label | Donatiello I (en) |
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| dbp:markWidth | 12 (xsd:integer) |
| dbp:name | Donatiello I (en) |
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| rdfs:comment | Donatiello I, also known as Mirach's Goblin, is a dwarf spheroidal galaxy in the constellation Andromeda, located between 8.1 and 11.4 million light-years from Earth. It is a possible satellite galaxy of the dwarf lenticular galaxy NGC 404, "Mirach's Ghost", which is situated 60 arcminutes away. It is otherwise one of the most isolated dwarf spheroidal galaxies known, being separated from NGC 404 by around 211,000 light-years. The galaxy is named after its discoverer, amateur astrophotographer Giuseppe Donatiello, who sighted the galaxy in a 2016 review of his archival long exposures from 2010 and 2013. Follow-up observations with the Roque de los Muchachos Observatory led to a scientific paper on its discovery being published in December 2018. (en) Donatiello I (Do I dSph), surnommée le Gobelin de Mirach, est une galaxie naine sphéroïdale située à 3,3 Mpc de la Terre dans la constellation d'Andromède à environ 1° de l'étoile Mirach (Beta Andromedae). La galaxie a été découverte le 23 septembre 2016 par l'astronome amateur italien au cours d'une auto-recherche dans la zone du ciel entourant la galaxie d'Andromède (Messier 31). Les observations effectuées avec le Telescopio Nazionale Galileo (3,58 m) et avec le Gran Telescopio Canarias (10,4 m) ont permis d’établir que l’objet se situe à 10,7 millions d’années-lumière. (fr) Donatiello I, nota anche con la sigla Do I, è una galassia nana sferoidale sita nella costellazione di Andromeda a circa 1 grado dalla stella Mirach. La galassia è stata scoperta dall'astrofilo italiano Giuseppe Donatiello nel corso di ricerche autonome. (it) Donatiello I es una galaxia enana esferoidal, ubicada a 9,78 millones años luz de la tierra, en la constelación de Andrómeda. La galaxia fue descubierta por el astrónomo italiano aficionado mientras analizaba imágenes de la constelación Andrómeda tomadas entre los años 2010 y 2013 desde el parque Nacional del Pollino, al sur de Italia. La galaxia fue confirmada posteriormente con imágenes tomadas por el Telescopio Nazionale Galileo (TNG) en 2016. Otros estudios realizados por un equipo de astrónomos que utilizaron imágenes tomadas por el Gran Telescopio Canarias (GTC) confirmaron que se encuentra fuera del grupo local de galaxias. Estos datos, junto a los recogidos por el TNG, indican que la galaxia enana está compuesta principalmente por estrellas muy antiguas y que su contenido estel (es) |
| rdfs:label | Donatiello I (en) Donatiello I (es) Donatiello I (fr) Donatiello I (it) |
| owl:sameAs | wikidata:Donatiello I dbpedia-es:Donatiello I dbpedia-fr:Donatiello I dbpedia-it:Donatiello I https://global.dbpedia.org/id/9GQc8 |
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| foaf:name | Donatiello I (en) |
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