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Erratum: XMM-Newton large program on SN1006 - I. Methods and initial results of spatially resolved spectroscopy
Vink, Jacco; Miceli, Marco; Bocchino, Fabrizio +2 more
A multiwavelength view of the open cluster NGC 2527: discovery of active stars
Singh, K. P.; Shah, Nevil; Subramaniam, Annapurni
Star clusters are ideal platforms for categorizing X-ray emitting stars and to study X-ray emission as a function of stellar age and activity. We present a comprehensive study of an open star cluster, NGC 2527, by combining data from XMM-UVOT-Gaia. Cluster membership of stars and their photometry are taken from Gaia and cross-matched with XMM and …
Pinnacles on the surface of the comet 67P/Churyumov-Gerasimenko: regional distribution and morphology
Keller, H. U.; Hviid, S. F.; Mall, U. +3 more
Pinnacles are local topographic promontories of different shapes considered to be formed due to uneven surface erosion. In the case of comets, areal changes in the degree of erosion could be related to inhomogeneities of the nucleus. However, the amount of the solar radiation and the thermal gradient is different across the orbit for geomorphologi…