Boötes I (dwarf galaxy)
Boötes I (dwarf galaxy)
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| Boötes Dwarf Galaxy | |
|---|---|
| Observation data (J2000 epoch) | |
| Constellation | Boötes |
| Right ascension | 14h 00m 06s[1] |
| Declination | +14° 30′ 00″ ± 15″[1] |
| Distance | 197 ± 18 kly (60 ± 6 kpc)[1] |
Apparent magnitude (V) | 13.1[a] |
| Characteristics | |
| Type | dSph[1] |
Apparent size (V) | 26′.0 ± 1′.4[1] |
| Other designations | |
| Boo dSph, Boötes Satellite, Boötes Dwarf Spheroidal Galaxy, Boötes dSph galaxy,[2] PGC 4713553 | |
The Boötes Dwarf Galaxy (Boo I dSph) is a galaxy, which appears faint, with a luminosity of 100,000 L☉ and an absolute magnitude of –5.8. It lies about 197 thousand light-years (60.4 kiloparsecs) away in the constellation Boötes. This dwarf spheroidal galaxy appears to be tidally disrupted[1] by the Milky Way Galaxy, which it orbits, and has two stellar tails that cross over to form a cross.[citation needed] Tidally disrupted galaxies usually only form one tail.[citation needed]
Like many of the ultrafaint dwarf spheroidals, the entire galaxy appears fainter than the Rigel system (absolute magnitude –7.84).[3]
Notes[edit]
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^ Apparent magnitude = Absolute magnitude + Distance modulus = –5.8[1] + 18.9[1] = 13.1
References[edit]
^ abcdefgh Belokurov, V.; Zucker, D. B.; Evans, N. W.; Wilkinson, M. I.; et al. (2006). "A Faint New Milky Way Satellite in Bootes". The Astrophysical Journal. 647 (2): L111–L114. arXiv:astro-ph/0604355. Bibcode:2006ApJ...647L.111B. doi:10.1086/507324..mw-parser-output cite.citation{font-style:inherit}.mw-parser-output q{quotes:"""""""'""'"}.mw-parser-output code.cs1-code{color:inherit;background:inherit;border:inherit;padding:inherit}.mw-parser-output .cs1-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-lock-limited a,.mw-parser-output .cs1-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration{color:#555}.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration span{border-bottom:1px dotted;cursor:help}.mw-parser-output .cs1-hidden-error{display:none;font-size:100%}.mw-parser-output .cs1-visible-error{font-size:100%}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-right{padding-right:0.2em}
^ "NAME Bootes Dwarf Spheroidal Galaxy". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2006-12-20.
^ Shultz, M.; Wade, G. A.; Petit, V.; Grunhut, J.; Neiner, C.; Hanes, D.; MiMeS Collaboration (2014). "An observational evaluation of magnetic confinement in the winds of BA supergiants". Monthly Notices of the Royal Astronomical Society. 438 (2): 1114. arXiv:1311.5116. Bibcode:2014MNRAS.438.1114S. doi:10.1093/mnras/stt2260.
External links[edit]
The Universe within 500,000 light-years The Satellite Galaxies (Atlas of the Universe)
Two New Galaxies Orbiting the Milky Way (Ken Croswell) April 19, 2006
Strange satellite galaxies revealed around Milky Way Kimm Groshong (New Scientist) 17:00 24 April 2006
New Milky Way companions found: SDSS-II first to view two dim dwarf galaxies (SDSS) May 8, 2006
Astronomers Find Two New Milky Way Companions (SpaceDaily) May 10, 2006- Boötes Dwarf Galaxy at Constellation Guide
The Milky Way | |||||||||
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| Location | Milky Way → Milky Way subgroup → Local Group → Local Sheet → Virgo Supercluster → Laniakea Supercluster → Observable universe → Universe Each arrow (→) may be read as "within" or "part of". |  | |||||||
| Galactic core |
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| Spiral arms |
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| Satellite galaxies |
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| Related |
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 Astronomy portal | |||||||||
Coordinates: 
14h 00m 06s, +14° 30′ 00″
Categories:
- Dwarf spheroidal galaxies
- Local Group
- Milky Way Subgroup
- Boötes
- Principal Galaxies Catalogue objects
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