Leo A
Leo A ( also known as Leo III ) is an irregular galaxy that is part of the Local Group. It lies 2.6 million light-years from Earth. This galaxy was discovered by Fritz Zwicky in 1942. The estimated mass of this galaxy is (8.0 ± 2.7) × 107 solar masses, with at least 80% consisting of an unknown dark matter. It is one of the most isolated galaxies in the local group and shows no indications of an interaction or merger for several billion years. However, Leo A is nearly unique among irregular galaxies in that more than 90% of its stars formed more recently than 8 billion years ago, suggesting a rather unusual evolutionary history. The presence of RR Lyrae variables shows that the galaxy has an old stellar population that is up to 10 billion years in age.
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Leo A
Leo A ( also known as Leo III ) is an irregular galaxy that is part of the Local Group. It lies 2.6 million light-years from Earth. This galaxy was discovered by Fritz Zwicky in 1942. The estimated mass of this galaxy is (8.0 ± 2.7) × 107 solar masses, with at least 80% consisting of an unknown dark matter. It is one of the most isolated galaxies in the local group and shows no indications of an interaction or merger for several billion years. However, Leo A is nearly unique among irregular galaxies in that more than 90% of its stars formed more recently than 8 billion years ago, suggesting a rather unusual evolutionary history. The presence of RR Lyrae variables shows that the galaxy has an old stellar population that is up to 10 billion years in age.
has abstract
Pour les articles homonymes, ...... logiques des galaxies spirale.
@fr
La Galassia Leo A (o Leo III) ...... sse O con ciclo di vita breve.
@it
Leo A ( also known as Leo III ...... by short-lived, O-class stars.
@en
Leo A (auch als Leo III bekann ...... 42 von Fritz Zwicky entdeckt .
@de
Leo A (również Leo III) – karł ...... eo A należy do Grupy Lokalnej.
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Leo A (también conocida como L ...... erta por Fritz Zwicky en 1942.
@es
Leo A (também conhecida como L ...... milhões de anos-luz da Terra.
@pt
Лев А (также называемый Лев II ...... ёздами спектрального класса O.
@ru
しし座Aまたはしし座III (Leo A or Leo II ...... 不規則銀河として、ハロー構造が初めて発見された銀河でもある。
@ja
獅子座A(也稱為獅子座 III) 是一個屬於本星系群的不規則星系,距離地球225萬光年遠。
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726,972,842
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Leo A by Hubble Space Telescope
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Pour les articles homonymes, ...... logiques des galaxies spirale.
@fr
La Galassia Leo A (o Leo III) ...... stituito dalla materia oscura.
@it
Leo A ( also known as Leo III ...... up to 10 billion years in age.
@en
Leo A (auch als Leo III bekann ...... 42 von Fritz Zwicky entdeckt .
@de
Leo A (również Leo III) – karł ...... eo A należy do Grupy Lokalnej.
@pl
Leo A (también conocida como L ...... erta por Fritz Zwicky en 1942.
@es
Leo A (também conhecida como L ...... milhões de anos-luz da Terra.
@pt
Лев А (также называемый Лев II ...... и достигает 10 миллиардов лет.
@ru
しし座Aまたはしし座III (Leo A or Leo II ...... 不規則銀河として、ハロー構造が初めて発見された銀河でもある。
@ja
獅子座A(也稱為獅子座 III) 是一個屬於本星系群的不規則星系,距離地球225萬光年遠。
@zh
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Galassia Leo A
@it
Leo A
@de
Leo A
@en
Leo A
@es
Leo A
@fr
Leo A
@pl
Leo A
@pt
Лев A
@ru
しし座A
@ja
獅子座A
@zh
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name
Leo A
@en
Leo III,UGC5364,DDO69,PGC28868
@en