SIMBAD references

2003MNRAS.339.1203K - Mon. Not. R. Astron. Soc., 339, 1203-1222 (2003/March-2)

ATCA HI observations of the peculiar galaxy IC 2554.


Abstract (from CDS):

ATCA HI and radio continuum observations of the peculiar southern galaxy IC 2554 and its surroundings reveal typical signatures of an interacting galaxy group. We detected a large HI cloud between IC 2554 and the elliptical galaxy NGC 3136B. The gas dynamics in IC 2554 itself, which is sometimes described as a colliding pair, are surprisingly regular, whereas NGC 3136B was not detected. The HI cloud, which emerges from IC 2554 as a large arc-shaped plume, has a size of ∼30 kpc, larger than that of IC 2554. The total HI mass of the IC 2554 system is ∼2x109 M, one-third of which resides in the HI cloud. It is possible that tidal interaction between IC 2554 and NGC 3136B caused this spectacular HI cloud, but the possibility of IC 2554 being a merger remnant is also discussed. We also detected HI gas in the nearby galaxies ESO 092-G009 and RKK 1959 and an associated HI cloud, ATCA J1006-6710. Together they have an HI mass of ∼4.6x108 M. Another new HI source, ATCA J1007-6659, with an HI mass of only ∼2.2x107 M was detected roughly between IC 2554 and ESO 092-G009 and corresponds to a face-on low surface brightness dwarf galaxy. Star formation is evident only in the galaxy IC 2554 with a rate of ∼4 M.yr–1.

Abstract Copyright: RAS

Journal keyword(s): galaxies: individual: IC 2554 - galaxies: individual: NGC 3136B - galaxies: individual: ESO 092-G009 - galaxies: individual: RKK 1959 - galaxies: interactions

Nomenclature: Fig.2, Table 3: [KGJ2003] ATCA JHHMM+DDMM N=2.

Simbad objects: 28

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