NGC 5053 is the New General Catalogue designation for a globular cluster in the northern constellation of Coma Berenices. It was discovered by German-British astronomer William Herschel on March 14, 1784 and cataloged as VI-7.

NGC 5053 位於 后髮座 的北部，是 星雲和星團新總表 （NGC天體表）中收錄的一個 球狀星團。 它是德裔英國天文學家 威廉·赫歇爾 在1873年4月14日發現的，並登錄為VI-7。 在他簡短的摘要中，它被形容為"一個非常微弱的星團，使用240倍毫無疑問地可以解析星雲的直徑為8'或10' [5]。 丹麥-愛爾蘭天文學家 約翰·路易·埃米爾·德雷耳 在1888年報告說, 星團出現了 非常微弱、相當大、不規則的圓形，在中間逐漸變亮[6]。 這是一個 金屬量 貧乏的星團，這意味著恆星除了氫和氦之 …

2024年4月30日 · M-53 and NGC-5053 - posted in Beginning Deep Sky Imaging: Before devoting attention to the comet C/2023 A3 Tsuchinshan-ATLAS, I revisited the globular clusters M-53 and NGC-5053 in the constellation Coma Berenices. This RGB image is a stack of ninety 2-minute sub-frames taken over a three-hour period.

NGC 5053是一个相对质量较低的星团，低的核心浓度因素为1.32。 它有一条长度为1,700 秒差距 的潮汐碎片星流朝向西方运动。 这条星流可能是经由潮汐激波引起的过程产生的。 这个星团与 M53 相距不到3° ，并且两者有几乎相同的 距离模数，对应于大约是2,000秒差距的空间分离。 有一条潮汐桥连接M53和NGC 5053，显示这一对在过去可能有过互动。 这个星团的轨道绕行银河， 近银心点 的距离大约是9,000秒差距， 轨道离心率 0.84。 它距离银心18,400秒差距， 径向速 …

2019年2月9日 · NGC 5053 contains only a few thousand stars, so lacks the dense central condensation of stars seen in most globular clusters, which can contain hundreds of thousands of stars. It belongs to Class 11 of the Shapley–Sawyer Concentration Class for describing globular clusters, where Class 12 is the most sparse.

NGC 5053 is of a much lesser stellar density than its prominent neighbor, and particularly lacks a concentrated bright nucleus. At a distance of about 53,500 light-years from us, NGC 5053's apparent diameter of 10.5 arc minutes corresponds to a linear extension of about 160 light-years.

2022年5月27日 · In this work, we study the stellar populations of a metal poor and a rather dispersed globular cluster, NGC 5053, using the UV instrument of AstroSat, namely the Ultra Violet Imaging Telescope in three far-UV (F154W, F169M, F172M) and three near-UV (N219M, N245M, N263M) filters.

2018年1月25日 · NGC 5053 is one of the most metal-poor GCs in the nearby Universe, and has been suggested to be associated with the Sagittarius (Sgr) dwarf galaxy, due to its similarity in location and radial velocity with one of the Sgr arms. In this work, we simulate the orbit of NGC 5053, and argue against a physical connection between Sgr and NGC 5053.

2024年5月11日 · NGC 5053 is a relatively low mass cluster with a low core concentration compared to M53 (also known as NGC 5024),[b] [/b]which is considerably brighter and denser. There is a subtle stellar tidal stream or bridge between and enveloping the two clusters formed by stars stripped off the clearly more disorganized NGC 5053 from the denser M53 ...

NGC 5053 is one of the most metal-poor GCs in the nearby universe and has been suggested to be associated with the Sagittarius (Sgr) dwarf galaxy, due to its similarity in location and radial velocity with one of the Sgr arms. In this work, we simulate the orbit of NGC 5053, and argue against a physical connection between Sgr and NGC 5053.