2016年3月28日 · Known as UGC 4459, this dwarf galaxy is located approximately 11 million light-years away in the constellation of Ursa Major (The Great Bear), a constellation that is also home to the Pinwheel Galaxy (M101), the Owl Nebula (M97), Messier 81, Messier 82 and several other galaxies all part of the M81 group.

2016年4月1日 · UGC 4459’s diffused and disorganized appearance is characteristic of an irregular dwarf galaxy. Lacking a distinctive structure or shape, irregular dwarf galaxies are often chaotic in appearance, with neither a nuclear bulge — a huge, tightly packed central group of stars — nor any trace of spiral arms — regions of stars extending from ...

2023年9月11日 · Known as UGC 4459, this dwarf galaxy is located approximately 11 million light-years away in the constellation of Ursa Major (The Great Bear).

NGC 4459 is a lenticular galaxy located about 50 million light-years away [2] in the constellation of Coma Berenices. [3] NGC 4459 is also classified as a LINER galaxy. [2] NGC 4459 was discovered by astronomer William Herschel on January 14, 1787. [4] NGC 4459 is a member of the Virgo Cluster. [5]

2016年4月8日 · UGC 4459’s diffused and disorganised appearance is characteristic of an irregular dwarf galaxy. Lacking a distinctive structure or shape, irregular dwarf galaxies are often chaotic in appearance, with neither a nuclear bulge — a huge, tightly packed central group of stars — nor any trace of spiral arms — regions of stars extending from ...

2016年3月28日 · In this Hubble Space Telescope image we see an irregular dwarf galaxy known as UGC 4459, located in the constellation of Ursa Major (The Great Bear). While UGC 4459’s diffused and disorganised stellar population of several billion sounds impressive, this is small when compared to the 200 to 300 billion stars in the Milky Way.

UGC 4459 星系富含年輕的藍色恆星和較老的紅色恆星，其恆星數量達數十億顆。 雖然看起來令人印象深刻，但與銀河系中的 2,000 億至 4,000 億顆恆星相比，這個數字實在是太小了! 用哈伯進行的觀測表示，由於它們的質量很低，所以與較大的星系相比，恆星的形成率很低。 它們原來的氣體只有很少一部分被轉化為恆星。 因此，為了更好地了解原始環境和恆星的形成過程，對這些小星系進行研究是非常有意思的。 可縮放高畫質影像 （另開新分頁）。 20190219 InSight 最新的火 …

Data at NED - NASA/IPAC Extragalactic Database : UGC 4459. Link by name to the catalogue in VizieR:

2016年3月28日 · Known as UGC 4459, this dwarf galaxy is located approximately 11 million light-years away in the constellation of Ursa Major (The Great Bear), a constellation currently overhead at midnight as seen from the UK.

2016年3月28日 · This newly released Hubble image shows dwarf galaxy UGC 4459, which is located approximately 11 million light-years away. Despite being less famous than their elliptical and spiral galactic cousins, irregular dwarf galaxies, such as the one captured in this NASA/ESA Hubble Space Telescope image,