NGC 1409

NGC 1409 is a quiescent[4] lenticular galaxy in the equatorial constellation of Taurus. It was discovered by the German-born astronomer William Herschel on January 6, 1785.[6] NGC 1409 is located in close proximity to the smaller Seyfert galaxy NGC 1410, and the two are strongly interacting. Their respective nuclei have a separation of just 23 kly, and they share a diffuse stellar envelope with a radius extending out to 49 kly.[4]

NGC 1409
Hubble Space Telescope image of NGC 1410 (left) and NGC 1409 (right)
Credit: HST/NASA/ESA
Observation data (J2000 epoch)
ConstellationTaurus[1]
Right ascension03h 41m 10.546s[2]
Declination−01° 18′ 10.12″[2]
Helio radial velocity7750±40 km/s[3]
Apparent magnitude (V)15.4[3]
Characteristics
TypeSB0[4] or SAB pec[3]
Apparent size (V)1′.0 × 0′.8[3]
Notable featuresInteracting with NGC 1410
Other designations
NGC 1409, UGC 2821, PGC 13553[5][3]

The morphological classification of this galaxy most closely matches type SB0, which indicates a barred lenticular galaxy. There is a conspicuous pipeline of dust and gas being funneled to NGC 1409 from NGC 1410. This lane has a typical width of 330 ly, passing to the north in front of NGC 1409 and then behind, becoming denser toward the galactic core. It has an estimated mass of 3×108 M☉ and is transferring mass at the estimated rate of 1.1–1.4 M☉ yr–1. However, there is no indications of recent star formation in NGC 1409 from this incoming material.[4]

References
  1. "HubbleSite - NewsCenter - Intergalactic 'Pipeline' Funnels Matter Between Colliding Galaxies". Retrieved 2007-04-05.
  2. Skrutskie, M. F.; et al. (February 2006). "The Two Micron All Sky Survey (2MASS)". The Astronomical Journal. 131 (2): 1163–1183. Bibcode:2006AJ....131.1163S. doi:10.1086/498708.
  3. "NASA/IPAC Extragalactic Database". Results for NGC 1409. Retrieved 2007-04-05.
  4. Keel, William C. (March 2004). "Ongoing Mass Transfer in the Interacting Galaxy Pair NGC 1409/1410". The Astronomical Journal. 127 (3): 1325–1335. arXiv:astro-ph/0311633. Bibcode:2004AJ....127.1325K. doi:10.1086/381927. S2CID 16772319.
  5. "NGC 1409". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2020-10-10.
  6. Seligman, Courtney. "NGC Objects: NGC 1400 - 1449". Retrieved 2020-10-09.
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