A STATISTICAL ANALYSIS OF THE ACCURACY OF THE DIGITIZED MAGNITUDES OF PHOTOMETRIC PLATES ON THE TIMESCALE OF DECADES WITH AN APPLICATION TO THE CENTURY-LONG LIGHT CURVE OF KIC 8462852

@article{Hippke2016ASA,
  title={A STATISTICAL ANALYSIS OF THE ACCURACY OF THE DIGITIZED MAGNITUDES OF PHOTOMETRIC PLATES ON THE TIMESCALE OF DECADES WITH AN APPLICATION TO THE CENTURY-LONG LIGHT CURVE OF KIC 8462852},
  author={Michael Hippke and Daniel Angerhausen and Michael B. Lund and Joshua A. Pepper and Keivan G. Stassun},
  journal={The Astrophysical Journal},
  year={2016},
  volume={825}
}
We present a statistical analysis of the accuracy of the digitized magnitudes of photometric plates on the timescale of decades. In our examination of archival Johnson B photometry from the Harvard DASCH archive, we find a median rms scatter of light curves of the order of 0.15 mag over the range B ∼ 9–17 for all calibrations. Slight underlying systematics (trends or flux discontinuities) are on a level of ≲0.2 mag per century (1889–1990) for the majority of constant stars. These historic data… 

KIC 8462852 Faded at an Average Rate of 0.164 ± 0.013 Magnitudes per Century from 1890 to 1989

KIC 8462852 is a completely ordinary F3 main-sequence star, except that the light curve from Kepler shows episodes of unique and inexplicable day-long dips with up to 20% dimming. Here, I provide a

Detection of a repeated transit signature in the light curve of the enigma star KIC 8462852: A possible 928-day period

As revealed by its peculiar Kepler light curve, the enigmatic star KIC 8462852 undergoes short and deep flux dimmings at a priori unrelated epochs. This star presents nonetheless all other

Analysis of a Century’s Worth of AR Scorpii Photometry from DASCH and ASAS-SN

AR Scorpii (AR Sco) is a binary star system containing the only known white dwarf (WD) pulsar. Previously reported photometric data sets only provide coverage back to 2005, but we extend the

The First Post-Kepler Brightness Dips of KIC 8462852

We present a photometric detection of the first brightness dips of the unique variable star KIC 8462852 since the end of the Kepler space mission in 2013 May. Our regular photometric surveillance

Extinction and the Dimming of KIC 8462852

To test alternative hypotheses for the behavior of KIC 8462852, we obtained measurements of the star over a wide wavelength range from the UV to the mid-infrared from 2015 October through 2016

KIC 8462852—Physical Modelling of its Occulting Objects and the Growing Mystery Surrounding its Cyclic Fluctuations: A New Assessment

The Kepler data for KIC 8462852 is re-examined to better understand the 0.88-day, 24.2-day and 48.4-day periodicities noted in connection with the star’s light dimming events, revealing cyclic patterns that seem almost mechanical in nature, as well as recurring number sequences that warrant further investigation.

Where Is the Flux Going? The Long-term Photometric Variability of Boyajian’s Star

We present ∼800 days of photometric monitoring of Boyajian’s Star (KIC 8462852) from the All-Sky Automated Survey for Supernovae (ASAS-SN) and ∼4000 days of monitoring from the All Sky Automated

KIC 8462852 FADED THROUGHOUT THE KEPLER MISSION

KIC 8462852 is a superficially ordinary main sequence F star for which Kepler detected an unusual series of brief dimming events. We obtain accurate relative photometry of KIC 8462852 from the Kepler

Modelling the KIC8462852 light curves: compatibility of the dips and secular dimming with an exocomet interpretation

This paper shows how the dips and secular dimming in the KIC8462852 light curve can originate in circumstellar material distributed around a single elliptical orbit (e.g. exocomets). The expected

The GALEX View of “Boyajian’s Star” (KIC 8462852)

The enigmatic star KIC 8462852, informally known as “Boyajian’s Star,” has exhibited unexplained variability from both short timescale (days) dimming events, and years-long fading in the Kepler

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