LEDA 074886
| LEDA 074886 | |
|---|---|
 | |
| Observation data (J2000 epoch) | |
| Constellation | Eridanus |
| Right ascension | 03h 40m 43.233s [1] |
| Declination | −18° 38′ 43.10″ [1] |
| Distance |
70,000 kly (21,000 kpc) h−1 0.73 |
| Group or cluster | NGC 1407[2] |
| Type | S0 [3] |
| Mass | 1×109 M☉ |
| Other designations | |
| PGC 74886 | |
LEDA 074886, also known as PGC 74886, is a dwarf galaxy with a rare rectangular shape, located at a distance of about 70,000,000 light-years (21,000,000 pc) in the Eridanus constellation.[4] The galaxy was detected in a wide field of view image taken by Subaru Telescope[5] using the Subaru Prime Focus Camera (Suprime-Cam).[6] The Keck Telescope discovered a rapidly spinning, thin disc with a side on orientation lurking at the center of LEDA 074886.[5] It is believed that unless LEDA 074886 merges with a similarly aligned galaxy, it may lose its corners over the next billion years.[4] LEDA 074886 has a mass of around 109 M⊙ (Compared to the Milky Way's mass of about 1012 M⊙).[2]
Location
LEDA 074886 is located in the celestial sphere at an azimuth (
) of 03h 40m 43.2s, and a declination (
) of −18° 38′ 43″ (J2000). It is located within the Galactic corona of NGC 1407, a massive spherical galaxy which is located approximately 50 thousand parsecs to the northwest of LEDA 074886.[2]
See also
- SDSS J074018.17+282756.3 is a spiral galaxy with arms that have a somewhat squarish-looking interior, but is distinct from LEDA 074886 because LEDA 074886 has no apparent spiral structure and a boxy like exterior form.[2]
- Sextans A, a member of the local group, has a box like form due to its expanding shell of young blue stars, but it has a much lower mass and density, and includes a central disc which LEDA 074886 does not include.[2]
References
- ↑ 1.0 1.1 SIMBAD, LEDA 074886 (accessed 20 March 2012)
- ↑ 2.0 2.1 2.2 2.3 2.4 "LEDA 074886: A REMARKABLE RECTANGULAR-LOOKING GALAXY" (PDF). March 19, 2012. Retrieved March 23, 2012.
- ↑ NED, LEDA 074886 (accessed 20 March 2012)
- ↑ 4.0 4.1 Rachel Kaufman (March 20, 2012). "Rare "Emerald Cut" Galaxy Found". National Geographic News. Retrieved March 21, 2012.
- ↑ 5.0 5.1 "Astronomers Discover Galaxy That Resembles An Emerald-Cut Diamond". Asian Scientist. March 20, 2012. Retrieved March 21, 2012.
- ↑ "Surprising Discovery of a Rare "Emerald-Cut" Galaxy" (Press release). Subaru Telescope—National Astronomical Observatory of Japan. March 19, 2012. Retrieved March 23, 2012.