Recycled galaxies in the colliding system ARP 105

Details Recycled galaxies in the colliding system ARP 105 Recycled galaxies in the colliding system ARP 105

Sep 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...289...83d&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 289, no. 1, p. 83-93

Astronomy and Astrophysics

Astrophysics

86

Dwarf Galaxies, Elliptical Galaxies, Galactic Evolution, Interacting Galaxies, Irregular Galaxies, Spiral Galaxies, Abundance, Image Analysis, Images, Infrared Spectra, Metallicity, Molecular Spectra, Spectrophotometry, Spectrum Analysis, Velocity Distribution, Visible Spectrum

Scientific paper

Arp 105 of an infrared luminous starburst spiral being torn apart by a massive elliptical close to the center of a cluster of galaxies. The elliptical has already accreted gasrich objects and may be the precursor of a giant cD galaxy. At the tip of colossal tidal tails that emanate from the spiral we find a blue compact dwarf galacy and an irregular of Magellanic type. We propose that these small galaxies are recycled objects being formed out of the tidal debris from the spiral. In Arp 105 we observe that the collision has caused a marked spatial separation of the cold interstellar gas: more than 90% of the CO emission comes from the central region of the spiral, whereas more than 90% of the observed atomic hydrogen is situated beyond 30 kpc from the center of the spiral.

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