Messier 106 (also known as NGC 4258) is an intermediate spiral galaxy in the constellation Canes Venatici. It was discovered by Pierre Méchain in 1781. M106 is at a distance of about 22 to 25 million light-years away from Earth.

M106 （也称为 NGC 4258 ）是一个位于 猎犬座 的 螺旋星系 ，由法国天文学家 皮埃尔·梅香 （Pierre Méchain）于1781年所发现，它也是一个 赛弗特星系 （Seyfert galaxies），由于星系发射出 X射线 ，意谓著有一个 超大质量黑洞 位于星系的核心。

Jul 6, 2014 · Messier 106 (M106) is a spiral galaxy located in the northern constellation Canes Venatici. The galaxy lies at a distance of 22 to 25 million light years from Earth. It has the designation NGC 4258 in the New General Catalogue. M106 has a distinct S-shape, formed by its spiral arms and bright nucleus.

May 17, 2018 · These six images represent the variety of star-forming regions in nearby galaxies. The galaxies are part of the Hubble Space Telescope's Legacy ExtraGalactic UV Survey (LEGUS), the sharpest, most comprehensive ultraviolet-light survey of …

Aug 15, 2019 · Abstract: NGC 4258 is a critical galaxy for establishing the extragalactic distance scale and estimating the Hubble constant (Ho). Water masers in the nucleus of the galaxy orbit about its supermassive black hole, and very long baseline interferometric observations of their positions, velocities, and accelerations can be modeled to give a ...

Aug 12, 2022 · Writing in Nature Astronomy, Willem Baan and colleagues 1 present space-based observations of the megamasers in galaxy NGC 4258 taken with interferometric baselines that span from Earth to space,...

NGC 4258, also known as Messier 106, is located about 23 million light years from Earth. A galaxy about 23 million light years away is the site of impressive, ongoing, fireworks. Rather than paper, powder, and fire, this galactic light show involves a giant black hole, shock waves, and vast reservoirs of gas.

These images are a composite of separate exposures acquired by the WFC3 and ACS instruments on the Hubble Space Telescope. Several filters were used to sample narrow wavelength ranges. The color results from assigning different hues (colors) to each monochromatic (grayscale) image associated with an individual filter.

NGC 4258 is a Seyfert galaxy in the constellation Ursa major. It is generally agreed to have at its heart a supermassive black hole some 39 million times more massive than the Sun. Gas orbiting this black hole has formed a warped disk nearly two light years in diameter.

The galaxy NGC 4258 (M106) belongs to the Hubble class SAB (s)bc. Its disk is inclined by 67° with respect to the sky plane. This galaxy has a distance median value of 7.6 Mpc. Two bright jets (invisible in optical light) are emerging from the center towards the east and west.