NGC 6040

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NGC 6040
SDSS Arp 122 NGC 6040.jpeg
Sloan Digital Sky Survey image centered on NGC 6040. The lenticular galaxy PGC 56942 can be seen at the bottom of the image.
Observation data (J2000 epoch)
Right ascension16h 04m 26.7s[1]
Declination17° 45′ 01″[1]
Helio radial velocity12615 km/s[1]
Distance173 Mpc (564 Mly)[1]
Group or clusterHercules Cluster
Apparent magnitude (V)15.07[1]
Mass~2.1×1011[2] M
Size~356,300 ly (109.23 kpc)[1] (estimated)[1]
Apparent size (V)1.3 x 0.5[1]
Notable featuresForms an interacting pair with PGC 56942
Other designations
NGC 6040A, PGC 56932, UGC 10165, ARP 122 NED02, VV 212a[1]
See also: Galaxy, List of galaxies

NGC 6040 is a spiral galaxy located about 550 million light-years away[3] in the constellation Hercules.[4] NGC 6040 was discovered by astronomer Édouard Stephan on June 27, 1870.[5] NGC 6040 is interacting with the lenticular galaxy PGC 56942.[6][7] As a result of this interaction, NGC 6040’s southern spiral arm has been warped in the direction toward PGC 56942.[2] NGC 6040 and PGC 56942 are both members of the Hercules Cluster.[2][8]

Neutral hydrogen depletion[edit]

NGC 6040 and PGC 56942 are both depleted of their Neutral hydrogen content. This depletion may have been caused as both galaxies fell into the Hercules Cluster and interacted with the surrounding the intracluster medium (ICM). This interaction would have caused ram-pressure stripping and in effect removed the gas in the two galaxies.[2]

See also[edit]

External links[edit]


  1. ^ a b c d e f g h i j k "NASA/IPAC Extragalactic Database". Results for NGC 6040. Retrieved 2018-01-12.
  2. ^ a b c d Huang, Zhenping; Sarazin, Craig L. (April 1996). "A High-Resolution ROSAT X-Ray Study of the Hercules Cluster". The Astrophysical Journal. 461: 622. Bibcode:1996ApJ...461..622H. doi:10.1086/177090. ISSN 0004-637X.
  3. ^ "Your NED Search Results". Retrieved 2018-01-14.
  4. ^ "Revised NGC Data for NGC 6040". Retrieved 2018-01-14.
  5. ^ "New General Catalog Objects: NGC 6000 - 6049". Retrieved 2018-01-11.
  6. ^ "Your NED Search Results". Retrieved 2018-01-16.
  7. ^ "Detailed Object Classifications". Retrieved 2018-01-16.
  8. ^ Buta, Ronald J.; Corwin, Harold G.; Odewahn, Stephen C. (2007-03-08). Atlas of Galaxies. Cambridge University Press. ISBN 9780521820486.

Coordinates: Sky map 16h 04m 26.7s, 17° 45′ 01″