52 citations · 98 across the 4 of their papers we have counts for
4 papers
Abrupt Pulsation Resumptions in Deneb: An Update
Joyce A. Guzik, Brian Kloppenborg, Noel Richardson +4
Deneb, the prototype Alpha Cygni variable, is a bright A2 Ia supergiant which shows irregular variability with a 12-day quasi-period, presumed to be caused by pulsations. At the 20…
The Great Dimming of Betelgeuse: a Surface Mass Ejection (SME) and its Consequences
Andrea K. Dupree, Klaus G. Strassmeier, Thomas Calderwood +7
The bright supergiant, Betelgeuse (Alpha Orionis, HD 39801), underwent a historic optical dimming during 2020 January 27 February 13. Many imaging and spectroscopic observation…
Daylight Photometry of Bright Stars -- Observations of Betelgeuse at Solar Conjunction
Otmar Nickel, Tom Calderwood
Betelgeuse is an important variable star with many observations in the AAVSO database, but there is an annual gap of about four months where Betelgeuse is close to the sun and not…
Spatially Resolved Ultraviolet Spectroscopy of the Great Dimming of Betelgeuse
Andrea K. Dupree, Klaus G. Strassmeier, Lynn D. Matthews +9
The bright supergiant, Betelgeuse (Alpha Orionis, HD 39801) experienced a visual dimming during 2019 December and the first quarter of 2020 reaching an historic minimum 2020 Februa…