HR 6819 (Danish Wikipedia)

Analysis of information sources in references of the Wikipedia article "HR 6819" in Danish language version.

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aanda.org

eso.org: Location of the HR 6819 in the constellation of Telescopium Citat: "...This map shows most of the stars visible to the unaided eye under good conditions and the system itself is marked with a red circle...", backup
6 May 2020, eso.org: Eso Instrument Finds Closest Black Hole to Earth. Invisible object has two companion stars visible to the naked eye Citat: "...The team found evidence for the invisible object by tracking its two companion stars using the MPG/ESO 2.2-metre telescope at ESO’s La Silla Observatory in Chile. They say this system could just be the tip of the iceberg, as many more similar black holes could be found in the future...", backup

06 maj 2020, videnskab.dk: Astronomer finder usynligt sort hul, som er det tætteste på Jorden. Formentlig ligger der hundreder af millioner af sorte huller skjult i vores galakse, mener forskerne Citat: "...Astronomer fra Det Europæiske Sydobservatiorium (ESO) i Chile har spottet et sort hul 1.000 lysår fra Jorden, hvilket er det tætteste på Jorden, man hidtil kender til...Omkring det nyopdagede sorte hul kredser to stjerner, der er en del af stjernebilledet Kikkerten, der kan ses med det blotte øje på den sydlige halvkugle..."

eso.org: Location of the HR 6819 in the constellation of Telescopium Citat: "...This map shows most of the stars visible to the unaided eye under good conditions and the system itself is marked with a red circle...", backup
6 May 2020, eso.org: Eso Instrument Finds Closest Black Hole to Earth. Invisible object has two companion stars visible to the naked eye Citat: "...The team found evidence for the invisible object by tracking its two companion stars using the MPG/ESO 2.2-metre telescope at ESO’s La Silla Observatory in Chile. They say this system could just be the tip of the iceberg, as many more similar black holes could be found in the future...", backup