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The interacting system ARP 30
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DOI：10.1086/117770.png)
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摘要
En 中文
Arp 30 is a galaxy pair composed of a face-on spiral and an edge-on disk galaxy There have been very few observations of Arp 30, probably because of its great distance (160 Mpc for Ho of 50). We have obtained CCD images of Arp 30 in the B, V, R, and I bands and a narrow filter at the redshifted Ha wavelength, J, H, and K images from the KPNO's SQIID, and optical-red spectra of each galaxy. These results combined with IRAS data show that Arp 30 is a moderate starburst system of about twice the luminousity of M82 and a total star formation rate of about 18 M./yr. Star formation is occurring in both components of the pair and is most enhanced in the nucleus of the face-on galaxy. The galaxies appear to be connected by a bridge containing clumpy Her emission, a feature resembling young star clusters. The structure and star formation enhancement resemble simulations of disk galaxies in their first close pass. (C) 1996 American Astronomical Society.
Keyword:
STAR-FORMATION
GALAXIES
EMISSION
