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IUE observations of star formation in a cooling flow

Hansen, L.; JØrgensen, H. E.; NØrgaard-Nielsen, H. U.

Star formation in cooling flows is usually found to have an initial mass function deficient in massive stars, but the center of the cooling flow in Hydra A has been shown to contain a significant number of early type stars. Here we use UV-spectra obtained with the IUE satellite together with ground based data to constrain the nature of this young …

Giantic Roundchroms of Binary Systems SX CAS and 22 VUL

Gurzadyan, G. A.

The IUE observations do not favor the chromospheric origin of typical chromospheric emission lines, of the doublet 2800 MgII first of all, in close binary systems SX Cas and 22 Vul, both with a cool giant-supergiant as primary, and a hot B7–B8 star as secondary. Here, it is shown that the concept of common chromospheres – roundchroms can explain t…