2001ApJ...549L..59L


Query : 2001ApJ...549L..59L

2001ApJ...549L..59L - Astrophys. J., 549, L59-L62 (2001/March-1)

Infrared line emission in the interacting region of Arp 244 (the Antennae): colliding molecular cloud complexes?

LIANG M.-C., GEBALLE T.R., LO K.Y. and KIM D.-C.

Abstract (from CDS):

We report velocity-resolved spectroscopy of infrared hydrogen recombination lines in the interacting region of the Antennae galaxies (NGC 4038/4039). It generally has been assumed that the active star formation found there is due to the interaction of the disks of the two galaxies and indeed two molecular cloud complexes, separated in velocity by ∼100 km.s–1, have been observed in the southern part of this region. Our measurements imply that the two cloud complexes are moving away from each other. This result poses interesting questions about the physical mechanisms leading to starbursts in Arp 244 and other interacting galaxies.

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Journal keyword(s): Galaxies: Interactions - Galaxies: Kinematics and Dynamics - Galaxies: Starburst - Infrared: Galaxies

Simbad objects: 3

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Number of rows : 3
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026
#notes
1 NGC 4038 EmG 12 01 53.002 -18 52 03.32   10.91   9.74 11.0 ~ 1364 1
2 NAME Antennae IG 12 01 53.170 -18 52 37.92           ~ 1749 0
3 NGC 4039 GiP 12 01 53.51 -18 53 10.3   11.08   9.77   ~ 1173 1

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