UGC 4879

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UGC 4879
UGC 4879.jpg
UGC 4879, taken using the Hubble Space Telescope's Advanced Camera for Surveys
Observation data (J2000 epoch)
Constellation Ursa Major
Right ascension 09h 16m 02.023s [1]
Declination +52° 50′ 42.05″ [1]
Redshift −0.000233 [2]
Heliocentric radial velocity −70 [2]
Distance 4.18 ± 0.41  Mly (1.283 ± 0.126  Mpc) [2]
Group or cluster Local Group
Apparent magnitude  (V)13.2 [3]
Apparent magnitude  (B)14.0 [3]
Characteristics
Type IAm [2]
Size3,000  ly (930  pc) [2]
Apparent size  (V)2.5′ × 1.5′ [2]
Notable featuresIsolated dwarf galaxy in the Local Group
Other designations
VV 124, MGC+09-15-113, PGC 26142 [3]

UGC 4879, which is also known as VV 124, is the most isolated dwarf galaxy in the periphery of the Local Group. It is an irregular galaxy at a distance of 1.38 Mpc. Low-resolution spectroscopy yielded inconsistent radial velocities for different components of the galaxy, hinting at the presence of a stellar disk. There is also evidence of this galaxy containing dark matter.

Contents

Appearance

UGC 4879 is a transition type galaxy, meaning it has no rings (Denoted rs). It is also a spheroidal (dSph) galaxy, meaning it has a low luminosity. It has little to no gas or dust, and little recent star formation. It is also irregular, meaning it has no specific form. [4]

References

  1. 1 2 Adelman-McCarthy, J. K.; et al. (2009). "VizieR Online Data Catalog: The SDSS Photometric Catalog, Release 7". VizieR On-line Data Catalog. Bibcode:2009yCat.2294....0A.
  2. 1 2 3 4 5 6 "NED results for object UGC 4879". National Aeronautics and Space Administration / Infrared Processing and Analysis Center . Retrieved 19 February 2017.
  3. 1 2 3 "UGC 4879". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 19 February 2017.
  4. ↑ Kopylov, A. I.; Tikhonov, N. A.; Fabrika, S.; Drozdovsky, I.; Valeev, A. F. (2008). "VV124 (UGC4879): A new transitional dwarf galaxy in the periphery of the Local Group". Monthly Notices of the Royal Astronomical Society: Letters. 387 (1): L45 –L49. arXiv: 0803.1107 . Bibcode:2008MNRAS.387L..45K. doi: 10.1111/j.1745-3933.2008.00482.x . S2CID   17166212.
  5. ↑ "A mysterious hermit" . Retrieved 8 June 2016.
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