... Dra about the accretion physics in and the evolution of AM Her stars, because: {a} 4 Dra is the second brightest AM Her star in the ultraviolet, {b} 4 Dra is one of the very few cataclysmic variables with a good HIPPARCOS parallax {d~180 pc}, and, in ...
... to four more relatively nearby RR Lyraes (XZ Cyg, UV Oct, RZ Cep and SU Dra) and two Pop II Cepheids (Kappa Pav and VY Pyx ... sub-milliarcsecond trigonometric parallaxes for five M-dwarf binaries: YY Gem, GU Boo, CM Dra, NSVS0103 and TRES-HER0-R ...
... observed the normal, oxygen-rich giant stars Dra (K5 III hybrid), Tau (K5 III), Cru ... by the differences in the spectra of Dra and Tau around 1550? (see Figure 4 ... in two K5 III stars, the normal giant Tau and the hybrid-chromosphere star Dra ...
... to four more relatively nearby RR Lyraes (XZ Cyg, UV Oct, RZ Cep and SU Dra) and two Pop II Cepheids (Kappa Pav and VY Pyx ... sub-milliarcsecond trigonometric parallaxes for five M-dwarf binaries: YY Gem, GU Boo, CM Dra, NSVS0103 and TRES-HER0-R ...
... to four more relatively nearby RR Lyraes (XZ Cyg, UV Oct, RZ Cep and SU Dra) and two Pop II Cepheids (Kappa Pav and VY Pyx ... sub-milliarcsecond trigonometric parallaxes for five M-dwarf binaries: YY Gem, GU Boo, CM Dra, NSVS0103 and TRES-HER0-R ...
... RA, Dec, m r , mu, J, H, K, N HIP , dRA (sec), dDec("),V, (B-V), pi, sigma pi , mu ... RA, Dec, m r , mu, J, H, K, N CNS3 , dRA (sec), dDec("),TiO5, CaH2, V, (B-V), pi ...
... The present program aims to use the Fine Guidance Sensors on HST to determine sub-milliarcsecond trigonometric parallaxes for five M-dwarf binaries: YY Gem, GU Boo, CM Dra, NSVS0103 and TRES-HER0-R . ...