Pisces Overdensity | |
---|---|
Observation data ( J2000 epoch) | |
Constellation | Pisces |
Right ascension | 23h 19m 00s [1] |
Declination | +00° 00′ 00″ [1] |
Distance | 260 kly (80 kpc) [2] |
Absolute magnitude (V) | −10.35 [3] |
Characteristics | |
Type | dIrr/dSph [3] |
Apparent size (V) | ~1° [4] |
Other designations | |
Pisces Plume [1] |
The Pisces Overdensity is a clump of stars in the Milky Way's halo, which may be a disrupted dwarf spheroidal galaxy. [5] It is situated in the Pisces constellation and was discovered in 2009 by analysis of distribution of RR Lyrae stars in the data obtained by the Sloan Digital Sky Survey's data. [2] The galaxy is located at the distance of about 80 kpc from the Sun and moves towards it with a speed of about 75 km/s. [4]
The Pisces Overdensity is one of the faintest satellites of the Milky Way. [5] Its mass is estimated to be at least 105 Solar masses. [2] However it has a large size of about several degrees (around 1 kpc) and may be in a transitional phase between a gravitationally bound galaxy and completely unbound system. [4] The Pisces Overdensity is located near the plane, where the Magellanic Clouds lie. There may exist a connection between the Magellanic stream and this galaxy. [2]
Pisces Overdensity | |
---|---|
Observation data ( J2000 epoch) | |
Constellation | Pisces |
Right ascension | 23h 19m 00s [1] |
Declination | +00° 00′ 00″ [1] |
Distance | 260 kly (80 kpc) [2] |
Absolute magnitude (V) | −10.35 [3] |
Characteristics | |
Type | dIrr/dSph [3] |
Apparent size (V) | ~1° [4] |
Other designations | |
Pisces Plume [1] |
The Pisces Overdensity is a clump of stars in the Milky Way's halo, which may be a disrupted dwarf spheroidal galaxy. [5] It is situated in the Pisces constellation and was discovered in 2009 by analysis of distribution of RR Lyrae stars in the data obtained by the Sloan Digital Sky Survey's data. [2] The galaxy is located at the distance of about 80 kpc from the Sun and moves towards it with a speed of about 75 km/s. [4]
The Pisces Overdensity is one of the faintest satellites of the Milky Way. [5] Its mass is estimated to be at least 105 Solar masses. [2] However it has a large size of about several degrees (around 1 kpc) and may be in a transitional phase between a gravitationally bound galaxy and completely unbound system. [4] The Pisces Overdensity is located near the plane, where the Magellanic Clouds lie. There may exist a connection between the Magellanic stream and this galaxy. [2]