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。

2018年5月17日 · 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 …

2014年7月6日 · 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.

2022年8月12日 · 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,...

2019年8月15日 · 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 ...

2024年10月9日 · M106, also designated NGC 4258, is a relatively close 23.5 million light years away, spans 60 thousand light years across, and can be seen with a small telescope towards the constellation of the Hunting Dogs (Canes Venatici).

2024年11月12日 · A quantitative spectroscopic study of blue supergiant stars in the Hubble constant anchor galaxy NGC 4258 is presented. The non-LTE analysis of Keck I telescope LRIS spectra yields a central...

2019年12月31日 · Rather than paper, powder and fire, this galactic light show involves a giant black hole, shock waves and vast reservoirs of gas. This galactic fireworks display is taking place in NGC 4258, also known as M106, a spiral galaxy like our own Milky Way.

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.