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https://hdl.handle.net/2445/223596| Title: | Gaia's Cepheids and RR Lyrae stars and luminosity calibrations based on Tycho-Gaia Astrometric Solution |
| Author: | Clementini, Gisella Eyer, Laurent Muraveva, Tatiana Garofalo, A. Ripepi, Vincenzo Marconi, Marcella Sarro, Luis M. Palmer, Max Luri Carrascoso, Xavier Molinaro, Roberto Rimoldini, Lorenzo Szabados, Laszlo Anderson, Richard I. Musella, Ilaria |
| Keywords: | Fotometria astronòmica Investigació astronòmica Astrometria Astronomical photometry Astronomical research Astrometry |
| Issue Date: | 8-Sep-2017 |
| Publisher: | EDP Sciences |
| Abstract: | Gaia Data Release 1 contains parallaxes for more than 700 Galactic Cepheids and RR Lyrae stars, computed as part of the Tycho-Gaia Astrometric Solution (TGAS). We have used TGAS parallaxes, along with literature (V, I, J, Ks, W1) photometry and spectroscopy, to calibrate the zero point of the period-luminosity and period-Wesenheit relations of classical and type II Cepheids, and the near-infrared period-luminosity, period-luminosity-metallicity and optical luminosity-metallicity relations of RR Lyrae stars. In this contribution we briefly summarise results obtained by fitting these basic relations adopting different techniques that operate either in parallax or distance (absolute magnitude) space |
| Note: | Reproducció del document publicat a: https://doi.org/10.1051/epjconf/201715202003 |
| It is part of: | EPJ Web of Conferences, 2017, vol. 152 |
| URI: | https://hdl.handle.net/2445/223596 |
| Related resource: | https://doi.org/10.1051/epjconf/201715202003 |
| ISSN: | 2100-014X |
| Appears in Collections: | Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB)) |
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