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Is PZ MON a Red Dwarf or a Red Giant?
Sergeev, S. G.; Bondar', N. I.
Hipparcos data (ESA 1997) give for PZ Mon a parallax π = 0.71 +- 1.17 mas that is not in agreement with earlier estimations of distance to the star of 15-30 ps and with its status of K- dwarf. There are presented spectra of PZ Mon in the region 3750-6150 Α with resolution of 7 ≈ Α, which were carried out in the Nasmith focus of 2.6 m reflector in …
XMM-Newton: The next decade for cool star research
Schmitt, J. H. M. M.
In this article I will highlight selected results from XMM-Newton observations of stellar coronae, emphasizing the specific XMM-Newton capabilities in terms of high-resolution spectroscopy, its long-look capability and its optical monitor. I will focus on results on ``normal", cool stars and present science areas hitherto largely unexploired by XM…
The XMM-Newton view of magnetars
Tiengo, A.; Mereghetti, S.; Esposito, P.
Anomalous X-ray Pulsars and Soft Gamma-ray Repeaters are believed to be magnetars: isolated neutron stars powered by the decay of extremely high magnetic fields. We review some of the main results obtained with \xmm and discuss the prospects for future observations of this small but extremely interesting class of objects.
Chandrayaan-1 mission blasts off to the Moon
Banks, Michael
India has launched its first mission to the Moon in a bid to create the highest resolution 3D maps of the lunar surface and provide a complete chemical mapping of the Moon's soil. The unmanned Chandrayaan-1 spacecraft successfully launched from Sriharikota, an island off the coast of the southern state of Andhra Pradesh last month.
Local Galactic kinematics from revised Hipparcos catalogue
Zhu, Z.; Yuan, F. -T.; Kong, D. -L.
Local stellar kinematic properties are reinvestigated. A main-sequence sample of 12718 objects is picked out from a total of 117955 Hipparcos stars and some local kinematical parameters are re-determined by dividing 19 subsamples mainly according to color index. The results are reasonably consistent with those derived from the initial Hipparcos da…