Dragomir, Diana; Matthews, Jaymie M.; Eastman, Jason D.; Cameron, Chris; Howard, Andrew W.; Guenther, David B.; Kuschnig, Rainer; Moffat, Anthony F. J.; Rowe, Jason F.; Rucinski, Slavek M.(IOP Publishing Limited, 2013-07-20)
Turner, David Gerald, 1945-; Kovtyukh, V. V.; Usenko, I. A.; Gorlova, N. I.(IOP Publishing Limited, 2013-01-01)
<p>A previously derived photometric parallax of 10.10 ± 0.20 mas, d = 99 ± 2 pc, is confirmed for Polaris by a spectroscopic parallax derived using line ratios in high dispersion spectra for the Cepheid. The resulting estimates for the mean luminosity of ⟨M<sub>V</sub>⟩ = −3.07 ± 0.01 s.e., average effective temperature of ⟨T<sub>eff</sub>⟩ = 6025 ± 1 K s.e., and intrinsic color of (⟨B⟩ − ⟨V⟩)<sub>0</sub> = +0.56 ± 0.01 s.e., which match values obtained previously from the photometric parallax for a space reddening of E<sub>B−V</sub> = 0.02 ± 0.01, are consistent with fundamental mode pulsation for Polaris and a first crossing of the instability strip, as also argued by its rapid rate of period increase. The systematically smaller Hipparcos parallax for Polaris appears discrepant by comparison.</p>...
Annand, J. R. M.; Arends, H. J.; Beck, R.; Borisov, N.; Braghieri, A.; Briscoe, W. J.; Cherepnya, S.; Collicott, Cristina; Costanza, S.; Downie, E. J.; Sarty, Adam James, 1965-(American Physical Society, 2015-05-26)
Gallo, Luigi C.; Wilkins, D. R.; Bonson, K.; Chiang, C.-Y.; Grupe, D.; Parker, M. L.; Zoghbi, A.; Fabian, A. C.; Komossa, S.; Longinotti, A. L.(Oxford University Press, 2015-01)
Adlarson, P.; Afzal, F.; Akondi, C. S.; Annand, J. R. M.; Arends, H. J.; Azimov, Ya. I.; Beck, R.; Borisov, N.; Braghieri, A.; Briscoe, W. J.; Collicott, Cristina; Sarty, Adam James, 1965-(American Physical Society, 2015-08-24)
Evans, N. R.; Szabo, R.; Derekas, A.; Szabados, L.; Cameron, C.; Matthews, J. M.; Sasselov, D.; Kuschnig, R.; Rowe, J. F.; Guenther, David B.(Oxford University Press, 2015-02)