NGC 4395 is a nearby low surface brightness spiral galaxy located about 14 million light-years (or 4.3 Mpc) from Earth in the constellation Canes Venatici. [1] . The nucleus of NGC 4395 is active and the galaxy is classified as a Seyfert Type I known for …

NGC 4395最受到注目的是它擁有迄今所發現最小的 黑洞，在核心的黑洞只有360,000 太陽質量。 而这个星系的哈勃形态学分类是一个非常晚型的盘状星系，没有bulge成分。 这是第一个没有bulge成分却发现有超大质量黑洞的星系。 這個黑洞是在1989年發現的，並且曾經被斷言質量在55,000至65,000太陽質量之間。 最新的估計雖然五倍於當初估計的大小，但仍遠低於同類天體 (星系) 中的黑洞。 它之所以如此小，可能是環繞在他周圍的空間只有少量的物質能加入它的體積 …

2019年7月29日 · NGC 4395はりょうけん座の南部、かみのけ座境界に近い位置にある淡い銀河です。 見かけの視直径13.2′ x 11.0’と大型の銀河ですが低表面輝度銀河と呼ばれているように非常に淡い銀河で全体を確認するには長い露出が必要です。銀河の中の明るいHII領域、星形成領域は、それぞれ東からNGC4399, 4400, 4401と別のNGC番号が与えられています。 この銀河は、活動銀河核を持つセイファートタイプの銀河で中心にはブラックホールが存在することが確 …

2023年6月13日 · We present a detailed multiwavelength study of star formation in the dwarf galaxy NGC 4395, which hosts an active galactic nucleus (AGN). From our observations with the Ultra-Violet Imaging Telescope, we have compiled a catalog of 284 star-forming (SF) regions, out of which we could detect 120 SF regions in H α observations.

atics ion-ization structure and gas morphology must be carried out in dwarfs hosting AGNs. In this context, NGC 4395 is a dwarf spiral galaxy located at a distance d ≈ 4.4 Mpc (1′′ ≈20 pc) (Den Brok et al. 2015), whose broad optical emission lines, X-ray variability and r. dio jet unambiguously reveal the prese. ce of an accre.

2023年4月18日 · We present a detailed multi-wavelength study of star formation in the dwarf galaxy NGC 4395 which hosts an active galactic nucleus (AGN). From our observations with the Ultra-Violet Imaging Telescope, we have compiled a catalogue of 284 star forming (SF) regions, out of which we could detect 120 SF regions in H α observations.

NGC 4395 is a spiral galaxy with a very low surface brightness. Unlike most galaxies the center of the galaxy is small and faint. Nearly all galaxies are known to contain a supermassive black hole in the center. NGC 4395 has one of the smallest known such black holes. It is six times smaller than the one at the center of our galaxy, the Milky Way.

NGC 4395 is a Seyfert 2 Galaxy located in the constellation of Canes Venatici in the northern hemisphere. NGC 4395's distance from Earth is 13,897,523.25 light years. NGC 4395 is called NGC 4395 in the New General Catalogue (NGC).

撮影メモ： りょうけん座とかみのけ座の境界付近に位置する大型ながら大変淡い渦巻銀河・NGC4395です。 コルカロリから南西に7.7度ほど離れています。 大きさは13分×10分ほど …

NGC 4395 is a galaxy of the morphological type SAB, an intermediate form from a spiral to a barred spiral. It is a Seyfert 2 galaxy with a bright core but low surface brightness. The brightest of the active star-forming regions have their own NGC numbers. Distances range from 3.9 Mpc to 4.7 Mpc (about 12 to 15 million light years). [145]