Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26as...94..299s&link_type=abstract
Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 94, no. 2, Aug. 1992, p. 299-326.
Astronomy and Astrophysics
Astronomy
6
Galactic Clusters, Radio Astronomy, Spiral Galaxies, Star Formation, Ubv Spectra, Charge Coupled Devices, Data Reduction, Far Infrared Radiation, Image Analysis, Infrared Astronomy Satellite, Telescopes
Scientific paper
New photometrical data (U,B,V and H bands) are presented for about 100 spiral galaxies in the A262 and Cancer clusters. The data are used to study the dependence of radio continuum to H band and FIR to H band ratios on the color index U - B, taken as an indicator of the star formation history in galaxy disks. Both parameters are found to increase in bluer galaxies, in agreement with the results obtained for other clusters or field galaxies. The radio continuum activity of spiral galaxies in the Cancer cluster is not enhanced like in other cluster spirals. A study of the reliability of CCD surface photometry is reported, based on the comparison of two sets of observations obtained with different telescopes.
Boselli Alessandro
Garilli Bianca
Gavazzi Giuseppe
Scodeggio Marco
Trinchieri Ginevra
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