author={Eva H. L. Bodman and Alice C. Quillen},
  journal={The Astrophysical Journal Letters},
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 depth of the order of 10−3 lasting less than a day which is much smaller and shorter than the largest dip observed ( ∼ 20 % ?> for ∼3 days), but a large, closely traveling cluster of comets can fit the observed depths and durations. We find that a series of large comet swarms, with all except one on… 

Back to “Normal” for the Disintegrating Planet Candidate KIC 12557548 b

KIC 12557548 b is the first of a growing class of intriguing disintegrating planet candidates, which lose mass in the form of a metal-rich vapor that condenses into dust particles. Here, we follow up

Mysterious eclipses in the light-curve of KIC8462852: a possible explanation

Apart from thousands of `regular' exoplanet candidates, Kepler satellite has discovered a few stars exhibiting peculiar eclipse-like events. They are most probably caused by disintegrating bodies

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

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

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


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

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

The KIC 8462852 light curve from 2015.75 to 2018.18 shows a variable secular decline

The star KIC 8462852 (Boyajian's Star) displays both fast dips of up to 20% on time scales of days, plus long-term secular fading by up to 19% on time scales from a year to a century. We report on

Anomalous light curves of young tilted exorings

Despite the success of discovering transiting exoplanets, several recently observed objects (e.g. KIC-8462852, J1407 and PDS-110) exhibit unconventional transit signals, whose appropriate



Secular resonances and cometary orbits in the β Pictoris system

THE dusty disk around the star β Pictoris is believed to contain a large number of comet-like bodies1,2. Transient absorption events associated with β Pictoris have been observed at many

Comet showers and the steady-state infall of comets from the Oort cloud

The appearance of an inner edge to the Oort comet cloud at a semimajor axis of a = (1--2) x 10/sup 4/ AU is an observational artifact. Stellar perturbations are frequent enough and strong enough to

Two families of exocomets in the β Pictoris system

An analysis of more than 1,000 archival spectra gathered between 2003 and 2011 provides a sample of about 6,000 variable absorption signatures arising from exocomets transiting the disk of the parent star, showing that the evaporating bodies observed for decades in the β Pictoris system are analogous to the comets in the Solar System.

Dusty tails of evaporating exoplanets - I. Constraints on the dust composition

Context. Recently, two exoplanet candidates have been discovered, KIC 12557548b and KOI-2700b, whose transit profiles show evidence of a comet-like tail of dust trailing the planet, thought to be fed


We analyzed the warm Spitzer/IRAC data of KIC 8462852. We found no evidence of infrared excess at 3.6 μm and a small excess of 0.43 ± 0.18 mJy at 4.5 μm below the 3σ threshold necessary to claim a


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.

A library of stellar light variations due to extra-solar comets

We present an extensive study of stellar occultations by extra-solar cometary tails through a large number of numerical simulations. The output of the simulations are the star light extinction and

Asteroids falling into the Sun

THE orbits of comets and near-Earth asteroids evolve chaotically, mainly in response to the gravitational influence of the planets. For comets, it is known that such perturbations can result in

Sungrazing comets: Properties of nuclei and in-situ detectability of cometary ions at 1 AU

Abstract A one-dimensional sublimation model for cometary nuclei is used to derive size limits for the nuclei of sungrazing comets and to estimate oxygen ion fluxes at 1 AU from their evaporation.

Detection of Variable Gaseous Absorption Features in the Debris Disks Around Young A-type Stars

We present medium resolution (R = 60,000) absorption measurements of the interstellar Ca II K line observed towards five nearby A-type stars (49 Ceti, 5 Vul, ι Cyg, 2 And, and HD 223884) suspected of