NGC 7172 is a spiral galaxy located in the constellation Piscis Austrinus. It is located at a distance of about 110 million light years from Earth, which, given its apparent dimensions, means that NGC 7172 is about 100,000 light years across. [2] It was discovered by …

2022年4月1日 · This image from the NASA/ESA Hubble Space Telescope reveals tendrils of dark dust threading across the heart of the spiral galaxy NGC 7172. The galaxy lies approximately 110 million light-years from Earth in the constellation Piscis Austrinus.

2022年3月28日 · NGC 7172 is located approximately 110.5 million light-years away in the constellation of Piscis Austrinus. The galaxy was discovered on September 23, 1834 by the English astronomer John Herschel. Otherwise known as ESO 466-38, IRAS 21591-3206 or LEDA 67874, it has a diameter of 85,000 light-years.

2022年3月28日 · NGC 7172是一个塞弗特星系--一种具有强烈发光的活动星系核的星系，其动力来自于物质向超大质量黑洞的聚集。 这张图片结合了两组哈勃观测的数据，这两组观测都是为了研究附近的活动星系核。

NGC 7172 is a Spiral Galaxy in the Piscis Austrinus constellation. NGC 7172 is situated south of the celestial equator and, as such, it is more easily visible from the southern hemisphere. Given its visual magnitude of 13.61, NGC 7172 is visible with the help of a telescope having an aperture of 14 inches (350mm) or more.

1998年3月13日 · We present evidence of flux variability, on both short (hours) and long (months) time scales of the Seyfert 2 galaxy NGC 7172. These results are based on the ASCA observation of NGC 7172 performed on May 1996.

New optical and infrared observations of the obscured edge-on galaxy NGC 7172 have revealed hitherto unexpected signs of energetic nuclear activity. Deep optical photographs indicate that the galaxy is severely distorted by tidal effects, while the nuclear emission spectrum is found to be indicative of excitation by a power-law photoionization ...

2011年10月12日 · The nucleus of NGC 7172, which is optically classified as a Seyfert 2 nucleus without any trace of broad emission lines, is a Seyfert 1 nucleus either surrounded by a molecular dust torus or hidden behind the strong galactic extinction. Our observation provides support for the unified model scheme.

NGC 7172 is a Seyfert 2 Galaxy located in the constellation of Piscis Austrinus in the southern hemisphere. NGC 7172's distance from Earth is 110,567,012.04 light years. NGC 7172 is called NGC 7172 in the New General Catalogue (NGC).

NGC 7172 is an interesting edge-on spiral galaxy in Piscis Austrinus. Easily visible in an 8" telescope, it appears as a fairly small but bright patch of light, with a bright, star-like nucleus.