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- Q2476549 subject Q7009873.
- Q2476549 subject Q7010045.
- Q2476549 subject Q7152546.
- Q2476549 subject Q7215991.
- Q2476549 subject Q8273466.
- Q2476549 subject Q8395321.
- Q2476549 abstract "Coma Berenices or Com is a dwarf spheroidal galaxy situated in the Coma Berenices constellation and discovered in 2006 in data obtained by the Sloan Digital Sky Survey. The galaxy is located at the distance of about 44 kpc from the Sun and moves away from the Sun with the velocity of about 98 km/s. It is classified as a dwarf spheroidal galaxy (dSph) meaning that it has an elliptical (ratio of axes ~ 5:3) shape with the half-light radius of about 70 pc.Com is one of the smallest and faintest satellites of the Milky Way—its integrated luminosity is about 7003370000000000000♠3700 times that of the Sun (absolute visible magnitude of about −4.1), which is much lower than the luminosity of the majority of globular clusters. However, its mass is about 1.2 million solar masses, which means that galaxy's mass to light ratio is around 450. A high mass to light ratio implies that Com is dominated by the dark matter.The stellar population of Com consists mainly of old stars formed more than 12 billion years ago. The metallicity of these old stars is also very low at [Fe/H] ≈ 2999747000000000000♠−2.53±0.45, which means that they contain 350 times less heavy elements than the Sun. The stars of Com were probably among the first stars to form in the Universe. Currently there is no star formation in Com. The measurements have so far failed to detect any neutral hydrogen in it—the upper limit is only 46 solar masses.Coma Dwarf is located near the Sagittarius Stream, which is made of stars stripped from the Sagittarius Dwarf Elliptical Galaxy. This association may indicate that Com is a former satellite of star cluster from that galaxy.".
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- Q2476549 wikiPageWikiLink Q7009873.
- Q2476549 wikiPageWikiLink Q7010045.
- Q2476549 wikiPageWikiLink Q7152546.
- Q2476549 wikiPageWikiLink Q7215991.
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- Q2476549 wikiPageWikiLink Q8273466.
- Q2476549 wikiPageWikiLink Q8395321.
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- Q2476549 name "Coma Berenices Dwarf Galaxy".
- Q2476549 names "Coma Dwarf, PGC 4713557".
- Q2476549 type Place.
- Q2476549 type CelestialBody.
- Q2476549 type Galaxy.
- Q2476549 type Location.
- Q2476549 type Place.
- Q2476549 type Thing.
- Q2476549 type Q318.
- Q2476549 comment "Coma Berenices or Com is a dwarf spheroidal galaxy situated in the Coma Berenices constellation and discovered in 2006 in data obtained by the Sloan Digital Sky Survey. The galaxy is located at the distance of about 44 kpc from the Sun and moves away from the Sun with the velocity of about 98 km/s.".
- Q2476549 label "Coma Berenices (dwarf galaxy)".
- Q2476549 name "Coma Berenices Dwarf Galaxy".
- Q2476549 name "Coma Dwarf, PGC 4713557".