Physics
Scientific paper
Oct 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006xmm..prop...88r&link_type=abstract
XMM-Newton Proposal ID #05023601
Physics
Stars, White Dwarfs, Solar System, Hd 187642, Xmm-Newton Proposal 05023601
Scientific paper
We propose to observe the low activity star Altair (HD 187642) with XMM-Newton. With a spectral type of A7 it is the earliest, magnetically active, single late- type star detected by ROSAT and Einstein. At a distance of only 5 pc it is a unique target to study the X-ray properties of late A stars in detail. Altair is known to be a very fast rotator, however its X-ray luminosity of 2-3x10^27 erg/s is rather low and its L_X/L_bol ratio is the lowest measured in any nearby star. We want to obtain an RGS spectrum that allows to measure the Ne/O abundance in a low activity star, addressing the controversially debated solar and stellar neon abundance.The observation will enable us to investigate the properties of coronal plasma in a star with very shallow convection zone for the first time.
No associations
LandOfFree
The hottest cool star:Probing the X-ray emission of the low activity star Altair does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The hottest cool star:Probing the X-ray emission of the low activity star Altair, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The hottest cool star:Probing the X-ray emission of the low activity star Altair will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1022555