FM13p.40 — Spectrophotometry of pulsating stars at Oukaimeden Observatory in Morocco

Date & Time

Aug 4th at 6:00 PM until 6:00 PM




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Author(s): Abdelmjid Benhida2, Fouad sefyani2, Thibault de France4, Sana Elashab2, fatim Zohra Belharcha2, Denis Gillet1, phillipe Mathias3, Ahmed Daassou2, Mohamed Lazrek2, Zouhair Benkhaldoun2

Institution(s): 1. CNRS-Oservatoire De Haute Provence, 2. High Energy Physics and Astrophysics Laboratory (LPHEA), Université Cadi Ayyad, 3. Institut de Recherche en Astrophysique et Planetologie (IRAP) Tarbes, 4.

Location of modern observatories requires high sky quality: good weather, isolated site to avoid any pollution, high altitude for a better transparency and to reduce temperature gradients, the main source of atmospheric turbulence. With an altitude of 2750m, the region of Oukaimeden in Morocco (longitude: 7°52'052" West, latitude: 3°112032" North) meets most of these criteria
With its 10'' and 14'' dedicated telescopes operating in remote control modes that combines high precision photometry and high resolution spectroscopy (spectrograph Eshell of R~12000 resolution over a wide spectral range), the universitary observatory of Oukaimeden (code J43) aims to develop new thematics in addition to present science. In particular, through this instrumentation, we aim to develop the field of pulsating stars, especially the atmospheric dynamics of high amplitude pulsators such as RR Lyrae and RV Tauri star, in order to establish new models of the mechanical and thermal behaviour of their atmospheres (shock waves, relaxation time, energy loss...).
In this work we will first describe our measuring instruments, and then analyze spectra and photometric curves of RR Lyrae star obtained during the maximum of the Blazhko effect.