Be stars Recommended equipment : Lhires III, eShel, Lisa, Alpy Time : one evening to a life time ! Abstract Classical Be stars are non supergiant B-type stars that exhibit or have exhibit emission lines over the photospheric spectrum. This article review common...
Beta Aurigae spectroscopic binary Recommended equipment : Lhires III, eShel Time : several observing nights Summary Grâce à la haute résolution du Lhires III, il est possible de séparer de nombreuses étoiles binaires spectroscopiques. Ces étoiles, qui...
Measure star temperature Recommended equipment : Lhires III, eShel, Lisa, Alpy, Star Analyser Time : 4h French philosopher Auguste Compte (1798-1857) became very famous when he wrote in 1835 about stars: “… we will never know, by any mean, chemical...
Spectral classification (high resolution) Recommended equipment : Lhires III, eShel Durée : 1 night Introduction Low resolution spectroscopy allows to classify stars and measure their effective temperature. But this method is limited and hgih resolution spectroscopy...
Spectral classification (low resolution) Recommended equipment : Lhires III, Star Analyser, Alpy, LISA, eShel Time : 1 night Spectroscopy is a great tool to compare stars between themselves and determine their spectral class – thus their effective temperature....
