NGC 5765

NGC 5765, also designated as MCG+01-38-004 and MCG+01-38-005,[1] is a pair of interacting megamasers in the constellation Virgo,[2] roughly 400,000,000 light-years (120,000,000 pc) away from Earth.[3] NGC 5765B is active, and energy is released from the core, some of which is absorbed by a nearby cloud of water. The cloud then re-emits this energy as microwaves.[4] These emissions were used to help redefine the Hubble constant.[5]

NGC 5765
From microwaves to megamasers
NGC 5765, seen from the Hubble Space Telescope. NGC 5765A is the upper galaxy, while NGC 5765B is the lower.
Observation data (J2000 epoch)
ConstellationVirgo
Right ascension14h 50m 50.4s[1]
Declination+05° 06′ 57″[1]
Redshift0.027836[1]
Distance~400 million ly
Apparent magnitude (B)14.6[1]
Characteristics
TypeSy2
Other designations
MCG+01-38-004, MCG+01-38-005, IRAS 14483+0519, KPG 437, PSCz Q14483+0519, UGC 9554

References
  1. "NGC 5765". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 25 November 2017.
  2. Frommert, Hartmut. "NGC 5765". spider.seds.org. Retrieved 2017-11-25.
  3. "Hubble Image of the Week - MCG+01-38-004 and MCG+01-38-005". SciTech Daily. 2017-08-28. Retrieved 2017-11-25.
  4. Hille, Karl (2017-09-01). "Hubble's Megamaser Galaxy". NASA. Retrieved 2017-11-25.
  5. "From microwaves to megamasers". www.spacetelescope.org. Retrieved 2017-11-25.


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