The First Post-Kepler Brightness Dips of KIC 8462852

  title={The First Post-Kepler Brightness Dips of KIC 8462852},
  author={Tabetha S. Boyajian and Roi Alonso and Alex Ammerman and David J Armstrong and Andr{\'e}s Asensio Ramos and Khalid Barkaoui and Thomas G. Beatty and Zouhair Benkhaldoun and Paul B Benni and Rory O. Bentley and Andrei V. Berdyugin and Svetlana V. Berdyugina and Serge Bergeron and Allyson Bieryla and Michaela G. Blain and A. Capetillo Blanco and Eva H. L. Bodman and Anne Boucher and Markle Bradley and Stephen Brincat and Thomas G. Brink and John Briol and David J. A. Brown and J.Budaj and Artem Y. Burdanov and Bryson L. Cale and Miguel Aznar Carbo and R. Garc{\'i}a and W J Clark and Geoffrey C. Clayton and James Lewis Clem and Phillip H. Coker and Evan M. Cook and C. M. Copperwheat and Jason Lee Curtis and Roc M. Cutri and Borb'ala Cseh and C. Cynamon and Alex J. Daniels and James. R. A. Davenport and Hans J. Deeg and Roberto De Lorenzo and Thomas de Jaeger and J Desrosiers and John Dolan and D. J. Dowhos and Franky Dubois and Russell I. Durkee and Shawn Dvorak and L. T. Easley and Nick Edwards and Tyler G. Ellis and Emery Erdelyi and Steve Ertel and Rafael. G. Farf'an and Jay Farihi and Alexei V. Filippenko and Emma Foxell and Davide Gandolfi and Faustino Garcia and Frank Giddens and Micha{\"e}l Gillon and Juan-Luis Gonz'alez-Carballo and Carlos Gonz'alez-Fern'andez and J. I. Gonz'alez Hern'andez and Keith A. Graham and Kenton Greene and Joao Gregorio and Na’ama Hallakoun and Ott{\'o} Hanyecz and Gerry R. Harp and Gregory W. Henry and E. Herrero and Caleb F. Hildbold and David H. Hinzel and G. Holgado and Bernadett Ign'acz and Valentin D. Ivanov and Emmanuel Jehin and Helen E. Jermak and Steve Johnston and Stella Kafka and Cs. Kalup and Emmanuel Kardasis and Shai Kaspi and Grant M. Kennedy and Flavien Kiefer and Collin L Kielty and Dennis Kessler and Harri Kiiskinen and Thomas L. Killestein and R. Andrew King and Veronika Koll{\'a}r and Heidi Korhonen and Clifford Kotnik and R'eka Konyves-T'oth and Levente Kriskovics and Nathan Krumm and Vadim Krushinsky and Emil Kundra and François-Ren{\'e} Lachapelle and Daryll M. LaCourse and P. B. Lake and Kristine W. F. Lam and Gavin P. Lamb and D Lane and Marie Wingyee Lau and Pablo Lewin and Chris J. Lintott and Carey M. Lisse and Ludwig Logie and Nicolas Longeard and M. Lopez Villanueva and Elwyn Whit Ludington and Amanda Kathryn Mainzer and Lison Malo and Chris Maloney and Andrew W. Mann and Alfonso Mantero and Massimo Marengo and J. M. Marchant and M. J. Mart'inez Gonz'alez and Joseph R. Masiero and Jon C. Mauerhan and J. McCormac and Aaron Mcneely and Huan Y. A. Meng and Mike Miller and Lawrence Alan Molnar and Juan Carlos Morales and Brett M. Morris and Matthew W. Muterspaugh and David Nespral and Carrie R. Nugent and Katherine M. Nugent and A. Odasso and Derek T. O’Keeffe and Arto Oksanen and John M. O’Meara and Andr'as Ordasi and H. P. Osborn and John J. Ott and J. Robert Parks and D. Rodriguez Perez and Vance Petriew and Roger D. Pickard and Andr'as P'al and Peter P. Plavchan and C. Westendorp Plaza and Don Pollacco and F. Pozo Nu{\~n}ez and Francisco J. Pozuelos and Steve Rau and Seth Redfield and Howard M. Relles and Ignasi Ribas and Jon Richards and Joonas Saario and Emily Safron and J{\'a}nos Sallai and Kriszti'an S'arneczky and Bradley E. Schaefer and Clea F. Schumer and Madison Schwartzendruber and Michael H. Siegel and Andrew P. V. Siemion and Brooke D. Simmons and Joshua D. Simon and Sergio Sim'on-Diaz and Michael L. Sitko and Hector Socas-Navarro and 'A. s'odor and D. A. Starkey and Iain A. Steele and Geoff Stone and Rachel A. Street and Tricia Sullivan and Jukka Suomela and Jonathan J. Swift and Gyula M. Szab'o and R'obert Szab'o and R'obert Szak'ats and Tam{\'a}s Szalai and Angelle M. Tanner and B. Toledo-Padr'on and Tam'as Tordai and Amaury H. M. J. Triaud and Jake D. Turner and Joseph H. Ulowetz and Mary Kay Urbanik and Siegfried Vanaverbeke and Andrew Vanderburg and Kriszti{\'a}n Vida and Brad P. Vietje and J'ozsef Vink'o and Kaspar von Braun and Elizabeth O. Waagen and Dan Walsh and Christopher A. Watson and Robin Weir and Klaus Wenzel and Michael W. Williamson and Jason T. Wright and Mark C. Wyatt and Wei Zheng and Gabriella Zsidi},
  journal={The Astrophysical Journal Letters},
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 started in 2015 October, and a sequence of dipping began in 2017 May continuing on through the end of 2017, when the star was no longer visible from Earth. We distinguish four main 1%–2.5% dips, named “Elsie,” “Celeste,” “Skara Brae,” and “Angkor,” which persist on timescales from several days to weeks… 

Non-gray, Month-long Brightening of KIC 8462852 in the Immediate Aftermath of a Deep Dip

We present an analysis of the results of long-term, multi-band photometric monitoring of the enigmatic star, KIC 8462852. Observations in the B, g′, V, r′, and IC passbands have been acquired at

A Large Ground-based Observing Campaign of the Disintegrating Planet K2-22b

We present 45 ground-based photometric observations of the K2-22 system collected between 2016 December and 2017 May, which we use to investigate the evolution of the transit of the disintegrating

High-resolution spectroscopy of Boyajian’s star during optical dimming events

Boyajian's star is an apparently normal main-sequence F-type star with a very unusual light curve. The dipping activity of the star, discovered during the Kepler mission, presents deep, asymmetric,

Boyajian’s Star B: The Co-moving Companion to KIC 8462852 A

The light curve of KIC 8462852, aka Boyajian’s Star, undergoes deep dips the origin of which remains unclear. A faint star ≈2″ to the east was discovered in Keck/NIRC2 imaging in Boyajian et al., but

Proper Motion of the Faint Star near KIC 8462852 (Boyajian's Star)—Not a Binary System

A faint star located 2 arcsec from KIC 8462852 was discovered in Keck 10 m adaptive optics imaging in the JHK near-infrared (NIR) in 2014 by Boyajian et al. (2016). The closeness of the star to KIC

A Search for Analogs of KIC 8462852 (Boyajian’s Star): A Second List of Candidates

  • E. Schmidt
  • Physics, Geology
    The Astronomical Journal
  • 2021
In data from the Kepler mission, the normal F3V star KIC 8462852 (Boyajian’s star) was observed to exhibit infrequent dips in brightness that have not been satisfactorily explained. A previous paper

The Visual Survey Group: A Decade of Hunting Exoplanets and Unusual Stellar Events with Space-based Telescopes

This article presents the history of the Visual Survey Group (VSG)—a Professional-Amateur (Pro-Am) collaboration within the field of astronomy working on data from several space missions (Kepler, K2

KIC 8462852: Maria Mitchell Observatory Photographic Photometry 1922 to 1991

A new study of the long-term photometric behavior of the the unusual star KIC 8462852 (Boyajian's Star) has been carried out using archival photographic plates from 1922-1991 taken at the Maria

The ominous fate of exomoons around hot Jupiters in the high-eccentricity migration scenario

All the giant planets in the solar system host a large number of natural satellites. Moons in extrasolar systems are difficult to detect, but a Neptune-sized exomoon candidate has been recently found

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We assess broadband color filters for the two fast cameras on the PLAnetary Transits and Oscillations of stars (PLATO) space mission with respect to exoplanetary atmospheric characterization. We



Optical polarimetry of KIC 8462852 in 2017 May–August

We present optical polarimetry in the period May-August 2017 of the enigmatic "dipping" star KIC 8462852. During that period three ~1% photometric dips were reported by other observers. We measured


We apply a principal component analysis (PCA)-based pre-whitening method to the entire collection of main Kepler mission long-cadence data for KIC 8462852 spanning four years. This technique removes


We have utilized the NASA/IRTF 3 m SpeX instrument’s high-resolution spectral mode to observe and characterize the near-infrared flux emanating from the unusual Kepler light curve system KIC 8462852.

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 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

Secular dimming of KIC 8462852 following its consumption of a planet

The Kepler-field star KIC 8462852, an otherwise apparently ordinary F3 main-sequence star, showed several highly unusual dimming events of variable depth and duration. Adding to the mystery was the

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


We investigate the plausibility of a cometary source of the unusual transits observed in the KIC 8462852 light curve. A single comet of similar size to those in our solar system produces a transit

No “Maunder Minimum” Candidates in M67: Mitigating Interstellar Contamination of Chromospheric Emission Lines

The solar analogs of M67 let us glimpse the probable behavior of the Sun on timescales surpassing the duration of human civilization. M67 can serve as a solar proxy because its stars share a similar