ESO 69-6

ESO 69-6
Hubble Space Telescope image of ESO 69-6
Observation data (J2000 epoch)
ConstellationTriangulum Australe
Right ascension16h 38m 13.1s
Declination−68° 26′ 42.8″
Redshift0.046439
Heliocentric radial velocity14,082 km/s
Distance654 Mly (200.6 Mpc)
Apparent magnitude (V)16.16
Characteristics
TypeLIRG
Notable featuresInteracting galaxies
Other designations
ESO 069-IG 006, PGC 58663, AM 1633-682, 2MASX J16381190-6826080, IRAS 16330-6820, 2MASS J16381342-6827167, CXO J163813.4-682717

ESO 69-6 collectively known as AM 1633-682, is a pair of interacting galaxies located 654 million light-years away in the constellation of Triangulum Australe. They are made of two galaxies: ESO 069-IG 006N known as IRAS 16330-6820, and ESO 069-IG 006S known as LEDA 285730.

Characteristics

Both galaxies are in stages of merging with each other. They resemble musical notes on a stave. Long tidal tails are formed, which stars and gas are stripped and torn away from their outer regions. These tails are proven signs of their interactions. Additionally numerical simulations that reproduces interaction-induced inflow of gas and resulting nuclear starbursts can, might trigger strong starbursts in both galaxies.

It is proven from the gravitational interactions of ESO 69-6, the surrounding intergalactic medium can be enriched with metals very efficiently up to distances of several 100 kpc. This can be explained in terms of indirect processes or direct processes that create kinetic spreading of baryonic matter. Possibly, they will eventually merge with each other and form a much bigger galaxy, in this case an elliptical galaxy, in the future.

References

  1. 1 2 "Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2024-04-29.
  2. ↑ "NED Search Results for ESO 069-IG 006N". ned.ipac.caltech.edu. Retrieved 2024-04-29.
  3. ↑ "NED Search Results for ESO 069-IG 006S". ned.ipac.caltech.edu. Retrieved 2024-04-29.
  4. ↑ "Galaxies - Merging and Interacting | Center for Astrophysics | Harvard & Smithsonian". cfa.harvard.edu. Retrieved 2024-04-29.
  5. 1 2 3 "ESO 69-6". spacetelescope.org. Retrieved 2024-04-29.
  6. ↑ "1993MNRAS.263..349S Page 349". adsabs.harvard.edu. Bibcode:1993MNRAS.263..349S. Retrieved 2024-04-29.
  7. ↑ "Star formation in galaxy interactions and mergers - Frederic Bournaud". ned.ipac.caltech.edu. Retrieved 2024-04-29.
  8. 1 2 Kapferer, W.; Knapp, A.; Schindler, S.; Kimeswenger, S.; Kampen, E. van (2005-07-01). "Star formation rates and mass distributions in interacting galaxies". Astronomy & Astrophysics. 438 (1): 87–101. arXiv:astro-ph/0503559. Bibcode:2005A&A...438...87K. doi:10.1051/0004-6361:20052753. ISSN 0004-6361.
  9. ↑ Chatterjee, Tapan K. (1993-01-01). "Interacting galaxies and mergers". Astrophysics and Space Science. 199 (2): 189–197. Bibcode:1993Ap&SS.199..189C. doi:10.1007/BF00613194. ISSN 1572-946X.
  10. ↑ Chou, Richard C. (2012-01-01). "Observational Studies of Interacting Galaxies and the Development of a Wide Integral-field Infrared Spectrograph". American Astronomical Society, AAS Meeting #219, Id.411.04. 219: 411.04. Bibcode:2012AAS...21941104C.