A detailed sample study of X-ray halos of spiral galaxies SSC_5

GT ROSATPSPC observations of normal edgeon spiral galaxies revealed theexistence of Xray halos in a number of cases. Questions that need to beanswered are: (i) is the detected emission caused by an exceptionallyhigh star formation rate due to nuclear activity or due to tidalinteraction (ii) are Xray halos a common phenomenon related to mass andenergy transfer between the disk and halo interface due to widespreadstar formation activity in the disk of normal spirals? We propose toaddress these issues with observations of a representative sample ofgalaxies, for which the available Xray data are insufficient. A largesample of objects can be used to obtain better morphological information. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]