The Year-long Flux Variations in Boyajian's Star Are Asymmetric or Aperiodic

Hippke, Michael; Angerhausen, Daniel (2018). The Year-long Flux Variations in Boyajian's Star Are Asymmetric or Aperiodic. Astrophysical Journal Letters, 854(1), L11. Institute of Physics Publishing IOP 10.3847/2041-8213/aaab44

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We combine and calibrate publicly available data for Boyajian's star, including photometry from ASAS (SN, V, I), Kepler, Gaia, SuperWASP, and citizen scientist observations (AAVSO, HAO, and Burke-Gaffney). Precise (mmag) photometry covers the years 2006–2017. We show that the year-long flux variations with an amplitude of ≈4% cannot be explained with cyclical symmetric or asymmetric models with periods shorter than 10 years. If the dips are transits, their periods must exceed 10 years, or their structure must evolve significantly during each four-year-long cycle.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > Center for Space and Habitability (CSH)
08 Faculty of Science > Physics Institute > Space Research and Planetary Sciences
08 Faculty of Science > Physics Institute
08 Faculty of Science > Physics Institute > NCCR PlanetS

UniBE Contributor:

Angerhausen, Daniel

Subjects:

500 Science > 520 Astronomy
500 Science > 530 Physics

ISSN:

2041-8205

Publisher:

Institute of Physics Publishing IOP

Language:

English

Submitter:

Danielle Zemp

Date Deposited:

21 Apr 2020 08:20

Last Modified:

26 Apr 2020 02:32

Publisher DOI:

10.3847/2041-8213/aaab44

BORIS DOI:

10.7892/boris.126824

URI:

https://boris.unibe.ch/id/eprint/126824

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