5 papers · 1 filter
Spectroscopic Analysis of the 2025 Eclipse of the Symbiotic Binary V1413 Aquilae
David Boyd, James Foster, Forrest Sims +12
We report on a coordinated campaign by amateur astronomers using a combination of high and low resolution spectroscopy to observe the 2025 eclipse of the symbiotic binary V1413 Aql…
Spectroscopic study of five Mira stars
David Boyd
Mira stars are popular with amateur astronomers because they are generally bright and their pulsations produce large changes in brightness. This also means they are eminently suita…
HD 5501: A Rapidly Evolving Interacting Eclipsing Binary with a Variable Light Curve and H Emission
Richard O. Gray, Christopher. J. Corbally, Sean Curry +19
HD~5501, a hitherto little studied eclipsing binary with an early A-type primary, has been caught in a short-lived, astrophysically interesting phase of its binary evolution. Recen…
Photometry and Spectroscopy of the Symbiotic Binary V1413 Aquilae during the 2024 Eclipse
David Boyd, David Cejudo, James Foster +2
We report our photometric and spectroscopic observations and analysis of the 2024 eclipse of the symbiotic binary V1413 Aquilae. We found the system in a visually bright state and…
A Dragon's Flame of Many Colours: Multi-wavelength Observations of Flares from the Active M Binary CR Draconis
James A. G. Jackman, Evgenya L. Shkolnik, R. O. Parke Loyd +9
We present the results of a multi-wavelength Pro-Am campaign to study the behaviour of flares from the active M1.5V star binary CR Draconis. CR Dra was observed with TESS 20-s phot…