Pisces A

Coordinates: 00h 14m 46.000s, +10° 48′ 47.01″

Pisces A
Observation data (J2000.0[1] epoch)
Right ascension 00h 14m 46.000s[1]
Declination +10° 48′ 47.01″[1]
Distance 18.4 Mly (5.64 Mpc)[2]
Absolute magnitude (V) −11.57+0.06
−0.05[2]
Characteristics
Mass 1×107[2] M☉
Size 145+5
−6[2] pc
Other designations
Pisces A,[1] PSC A, GALFA-Dw1[1]

Pisces A (Psc A) is a void dwarf galaxy. It is located in the Local Void, near Pisces B; and is in the Pisces constellation. It is 18.4 million light-years (5.64 megaparsecs) away from Earth.[2] The galaxy was discovered with the WIYN Observatory. About 100 million years ago, the galaxy started moving out of the void and into the local filament zone and denser gaseous environment. This sparked off a doubling of the rate of star formation.[3]

References

  1. 1 2 3 4 5 "[SCB2015] GALFA-Dw1". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 21 February 2018.
  2. 1 2 3 4 5 Tollerud, Erik J; Geha, Marla C; Grcevich, Jana; Putman, Mary E; Weisz, Daniel R; Dolphin, Andrew E (2016). "Hstimaging of the Local Volume Dwarf Galaxies Pisces A and B: Prototypes for Local Group Dwarfs". The Astrophysical Journal. 827 (2): 89. arXiv:1607.03487. Bibcode:2016ApJ...827...89T. doi:10.3847/0004-637X/827/2/89.
  3. ↑ "Hubble uncovers a galaxy pair coming in from the wilderness". Science Daily. 11 August 2016.

Further reading

  • Carignan, C; Libert, Y; Lucero, D. M; Randriamampandry, T. H; Jarrett, T. H; Oosterloo, T. A; Tollerud, E. J (2016). "HI observations of two new dwarf galaxies: Pisces A and B with the SKA Pathfinder KAT-7". Astronomy & Astrophysics. 587: L3. arXiv:1601.00494. Bibcode:2016A&A...587L...3C. doi:10.1051/0004-6361/201527910.


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