We present new absolute trigonometric parallaxes and proper motions for seven Population II variable stars-five RR Lyr variables: RZ Cep, XZ Cyg, SU Dra, RR Lyr, and UV Oct; and two type 2 Cepheids: VY Pyx and kappa Pav. We obtained these results with astrometric data from Fine Guidance Sensors, white-light interferometers on Hubble Space Telescope. We find absolute parallaxes in milliseconds of arc: RZ Cep, 2.12 +/- 0.16 mas; XZ Cyg, 1.67 +/- 0.17 mas; SU Dra, 1.42 +/- 0.16 mas; RR Lyr, 3.77 +/- 0.13 mas; UV Oct, 1.71 +/- 0.10 mas; VY Pyx, 6.44 +/- 0.23 mas; and. Pav, 5.57 +/- 0.28 mas; an average sigma(pi)/pi = 5.4%. With these parallaxes, we compute absolute magnitudes in V and K bandpasses corrected for interstellar extinction and Lutz-...
We present results from an analysis of $\sim$ 29,000 RR Lyrae stars located in the Large Magellanic...
We present results from an analysis of ∼29 000 RR Lyrae stars located in the Large Magellanic Cloud ...
In this invited review I discuss the calibration and applications of the period-luminosity relation ...
We present new absolute trigonometric parallaxes and proper motions for seven Population II variable...
We present new absolute trigonometric parallaxes and proper motions for seven Population II variable...
We present new absolute trigonometric parallaxes and proper motions for seven Population II variable...
We present new absolute trigonometric parallaxes and proper motions for seven Population II variable...
(abridged) We present new absolute trigonometric parallaxes and relative proper motions for nine Gal...
We show that a straightforward application of the predicted relation connecting the absolute K magni...
The separation between RR Lyrae (RRLs) and Type II Cepheid (T2Cs) variables based on their period is...
By adopting the same approach outlined in De Santis & Cassisi (1999), we evaluate the absolute bolom...
International audienceContext. Parallaxes for 331 classical Cepheids, 31 Type II Cepheids, and 364 R...
Context: Parallaxes for 331 classical Cepheids, 31 Type II Cepheids, and 364 RR Lyrae stars in commo...
Context. Parallaxes for 331 classical Cepheids, 31 Type II Cepheids, and 364 RR Lyrae stars in commo...
We present results from an analysis of $\sim$ 29,000 RR Lyrae stars located in the Large Magellanic...
We present results from an analysis of ∼29 000 RR Lyrae stars located in the Large Magellanic Cloud ...
In this invited review I discuss the calibration and applications of the period-luminosity relation ...
We present new absolute trigonometric parallaxes and proper motions for seven Population II variable...
We present new absolute trigonometric parallaxes and proper motions for seven Population II variable...
We present new absolute trigonometric parallaxes and proper motions for seven Population II variable...
We present new absolute trigonometric parallaxes and proper motions for seven Population II variable...
(abridged) We present new absolute trigonometric parallaxes and relative proper motions for nine Gal...
We show that a straightforward application of the predicted relation connecting the absolute K magni...
The separation between RR Lyrae (RRLs) and Type II Cepheid (T2Cs) variables based on their period is...
By adopting the same approach outlined in De Santis & Cassisi (1999), we evaluate the absolute bolom...
International audienceContext. Parallaxes for 331 classical Cepheids, 31 Type II Cepheids, and 364 R...
Context: Parallaxes for 331 classical Cepheids, 31 Type II Cepheids, and 364 RR Lyrae stars in commo...
Context. Parallaxes for 331 classical Cepheids, 31 Type II Cepheids, and 364 RR Lyrae stars in commo...
We present results from an analysis of $\sim$ 29,000 RR Lyrae stars located in the Large Magellanic...
We present results from an analysis of ∼29 000 RR Lyrae stars located in the Large Magellanic Cloud ...
In this invited review I discuss the calibration and applications of the period-luminosity relation ...