Boötes I (dwarf galaxy)

Boötes Dwarf Galaxy
Boötes Dwarf Galaxy
Observation data (J2000 epoch)
Constellation	Boötes
Right ascension	14h 00m 06s
Declination	+14° 30′ 00″ ± 15″
Distance	197 ± 18 kly (60 ± 6 kpc)
Apparent magnitude (V)	13.1
Characteristics
Type	dSph
Apparent size (V)	26′.0 ± 1′.4
Other designations
	Boo dSph, Boötes Satellite, Boötes Dwarf Spheroidal Galaxy, Boötes dSph galaxy, 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 197,000 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[]

^{^} Apparent magnitude = Absolute magnitude + Distance modulus = –5.8^[1] + 18.9^[1] = 13.1

References[]

^ Jump up to: ^a ^b ^c ^d ^e ^f ^g ^h 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. S2CID 15348323.
^ "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[]

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

Coordinates: 14^h 00^m 06^s, +14° 30′ 00″

[Belokurovetal2006-1] Jump up to: ^a ^b ^c ^d ^e ^f ^g ^h 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. S2CID 15348323.

[simbad-2] "NAME Bootes Dwarf Spheroidal Galaxy". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2006-12-20.

[schultz-3] 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.

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