ESO 69-6

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ESO 69-6
Hubble Interacting Galaxy ESO 69-6 (2008-04-24).jpg
Hubble Space Telescope image of ESO 69-6
Observation data (J2000 epoch)
Constellation Triangulum Australe
Right ascension 16h 38m 13.1s
Declination −68° 26′ 42.8″
Redshift 0.046439
Heliocentric radial velocity 14,082 km/s
Distance 654 Mly (200.6 Mpc)
Apparent magnitude  (V)16.16
Characteristics
Type LIRG
Notable features Interacting 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, [1] is a pair of interacting galaxies located 654 million light-years away in the constellation of Triangulum Australe. [1] They are made of two galaxies: ESO 069-IG 006N known as IRAS 16330-6820, [2] and ESO 069-IG 006S known as LEDA 285730. [3]

Characteristics

Both galaxies are in stages of merging with each other. [4] They resemble musical notes on a stave. [5] Long tidal tails are formed, which stars and gas are stripped and torn away from their outer regions. [5] [6] These tails are proven signs of their interactions. [5] Additionally numerical simulations that reproduces interaction-induced inflow of gas and resulting nuclear starbursts can, might trigger strong starbursts in both galaxies. [7]

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. [8] This can be explained in terms of indirect processes or direct processes that create kinetic spreading of baryonic matter. [8] Possibly, they will eventually merge with each other and form a much bigger galaxy, in this case an elliptical galaxy, in the future. [9] [10]

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". www.cfa.harvard.edu. Retrieved 2024-04-29.
  5. 1 2 3 information@eso.org. "ESO 69-6". www.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.
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