The Interacting Galaxy Pair
NGC 6872 / IC 4970
Cathy Horellou (Onsala) and
Bärbel Koribalski
(ATNF)
Papers:
- Stars and Gas in the Very Large Interacting Galaxy NGC 6872
Horellou C., & Koribalski B., 2007,
A&A 464, 155.
- Gas and Star Formation in the Interacting Galaxies NGC 6872/IC4970
Horellou C., & Koribalski B., 2004,
ASPC 320, 69.
- Stars and Gas in the Large Interacting Galaxy NGC 6872
Horellou C., & Koribalski B., 2004,
IAU 217, 422.
- The Gigantic Interacting Galaxy NGC 6872
Horellou C., & Koribalski B., 2003,
Ap&SS 284, 499.
-
The Gigantic Interacting Galaxy NGC 6872
Horellou C., Koribalski B., 2002, Proceedings of the Kiel conference "The
Evolution of Galaxies. III- From Simple Approaches to Self-Consistent
Models", eds G. Hensler, G. Stasinska, S. Harfst, P. Kroupa, C. Theis.
-
The Gigantic Barred Galaxy NGC 6872
Horellou C., Koribalski B., 2002, Proceedings of the meeting of the
Societe Francaise d'Astronomie et d'Astrophysique, p. 389, eds. F.
Combes and D. Barret.
Figure 1: Giant Interacting Galaxies NGC 6872/IC 4970. A three-colour
composite, reproduced from one blue (B), one green-yellow (V) and one red
(R) exposure, obtained with FORS1 at ANTU in the morning of March 29, 1999.
The field size is 6.8 arcmin x 6.8 arcmin. North is to the upper right and
East is to the upper left. For details see
ESO Press Photos.
Figures 2-4:
Neutral hydrogen distribution (top, middle) and mean velocity field (bottom)
of the galaxy NGC 6872 and its companion IC 4970 as obtained with four
configurations (see below) of the ATCA.
Summary of map parameters.
INVERT: cell=4; imsize=300; robust=0.5; offset=-180,180; options=systemp;
line=velocity,70,4050,20,20; select=-ant(6); slop=1,interpolate.
CLEAN: gain=0.1; niters=100; cutoff=0.003. MOMENT: clip=0.003.
The data needed lots of flagging.
The synthesised beam (42.4"x38.8") is displayed at the bottom left.
Figures 5 and 6 : ....
Observations (Project C979):
- ATCA 750B array - 3/4 Aug. 2002 - observer: E. Sadler & E. Muller
- ATCA 1.5B array - 7/8 Jul. 2002 - observer: E. de Blok
- ATCA EW352 array - 27 Dec. 2001 - observer: B. Koribalski
- ATCA 1.5D array - 18 Nov. 2001 - observer: B. Koribalski (bad data)
- ATCA 750D array - 25 Sep. 2001 - observer: B. Koribalski
Baerbel.Koribalski @ csiro.au