Non-grey dimming events of KIC 8462852 from GTC spectrophotometry

  title={Non-grey dimming events of KIC 8462852 from GTC spectrophotometry},
  author={H. Deeg and R. Alonso and D. Nespral and T. K. I. D. A. D. Canarias and U. L. Laguna and Louisiana State University},
  journal={arXiv: Solar and Stellar Astrophysics},
We report ground-based spectrophotometry of KIC 8462852, during its first dimming events since the end of the Kepler mission. The dimmings show a clear colour-signature, and are deeper in visual blue wavelengths than in red ones. The flux loss' wavelength dependency can be described with an \AA ngstr\"om absorption coefficient of $2.19\pm0.45$, which is compatible with absorption by optically thin dust with particle sizes on the order of 0.0015 to 0.15 $\mu$m. These particles would be smaller… Expand

Figures and Tables from this paper

The KIC 8462852 light curve from 2015.75 to 2018.18 shows a variable secular decline
A Large Ground-based Observing Campaign of the Disintegrating Planet K2-22b
A Reassessment of Families of Solutions to the Puzzle of Boyajian's Star


Extinction and the Dimming of KIC 8462852
Gray transits of WD 1145+017 over the visible band
KIC 8462852 Faded Throughout the Kepler Mission
KIC 8462852: Transit of a Large Comet Family