Origin and Evolution of the Cometary Reservoirs

Dones, L.; Brasser, R.; Kaib, Nathan A.; Rickman, H.

doi:10.1007/s11214-015-0223-2

Cited by 187 publications

(156 citation statements)

References 479 publications

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“…• ) is not necessarily a problem for this hypothsis, as the Oort cloud should be nearly isotropic (Dones et al 2015, and references therein). The primary difficulty with this picture is that the orbital timescale of any Oort cloud dust concentrations is 10 5 to 10 7 yr. Over the 8-year-long time line from the beginning of Kepler to our latest observations, the astrometric movement of such a structure should be dominated by the Earth's parallactic motion, and thus most of the observed light curve features should be recurrent relatively accurately on a yearly basis (Wright & Sigurdsson 2016).…”

Section: Discussionmentioning

confidence: 99%

Extinction and the Dimming of KIC 8462852

Meng

Rieke

Dubois³

et al. 2017

ApJ

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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 October 2015 through December 2016, using Swift, Spitzer and at AstroLAB IRIS. The star faded in a manner similar to the longterm fading seen in Kepler data about 1400 days previously. The dimming rate for the entire period reported is 22.1 ± 9.7 milli-mag yr −1 in the Swift wavebands, with amounts of 21.0 ± 4.5 mmag in the groundbased B measurements, 14.0 ± 4.5 mmag in V , and 13.0 ± 4.5 in R, and a rate of 5.0 ± 1.2 mmag yr −1 averaged over the two warm Spitzer bands. Although the dimming is small, it is seen at 3 σ by three different observatories operating from the UV to the IR. The presence of long-term secular dimming means that previous SED models of the star based on photometric measurements taken years apart may not be accurate. We find that stellar models with T ef f = 7000 -7100 K and A V ∼ 0.73 best fit the Swift data from UV to optical. These models also show no excess in the near-simultaneous Spitzer photometry at 3.6 and 4.5 µm, although a longer wavelength excess from a substantial debris disk is still possible (e.g., as around Fomalhaut). The wavelength dependence of the fading favors a relatively neutral color (i.e., R V 5, but not flat across all the bands) compared with the extinction law for the general ISM (R V = 3.1), suggesting that the dimming arises from circumstellar material.

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Section: Discussionmentioning

confidence: 99%

Extinction and the Dimming of KIC 8462852

Meng

Rieke

Dubois³

et al. 2017

ApJ

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“…The topic of water in small bodies, and in the Solar System more generally, is also the subject of earlier reviews by Jewitt et al (2007) and Encrenaz (2008), while Hartmann et al (2017) consider the topic of water in extrasolar protoplanetary discs. Dones et al (2015) give a recent review of the various cometary reservoirs in our Solar System from a dynamical point of view.…”

Section: Introductionmentioning

confidence: 99%

The Main Belt Comets and ice in the Solar System

Snodgrass

Agarwal

Combi

et al. 2017

Astron Astrophys Rev

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We review the evidence for buried ice in the asteroid belt; specifically the questions around the so-called Main Belt Comets (MBCs). We summarise the evidence for water throughout the Solar System, and describe the various methods for detecting it, including remote sensing from ultraviolet to radio wavelengths. We review progress in the first decade of study of MBCs, including observations, modelling of ice survival, and discussion on their origins. We then look at which methods will likely be most effective for further progress, including the key challenge of direct detection of (escaping) water in these bodies.

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“…With an accurate model and a well-constrained estimate of q (the power law index for the distribution of small KBOs) one could obtain insight into the material strength of these objects (Pan & Sari, 2005), as well as constrain the initial planetesimal population of the Kuiper belt (Schlichting et al, 2013) and determine whether the kilometer-sized KBO population is enough to supply the Jupiter-family comets (Dones et al, 2015). However, without knowledge of the number of small Kuiper belt objects, q cannot be well-constrained.…”

Section: Motivationmentioning

confidence: 99%

Pipeline for the Detection of Serendipitous Stellar Occultations by Kuiper Belt Objects with the Colibri Fast-photometry Array

Pass

Metchev

Brown

et al. 2017

PASP

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We report results from the preliminary trials of Colibri, a dedicated fast-photometry array for the detection of small Kuiper belt objects through serendipitous stellar occultations. Colibri's novel data processing pipeline analyzed 4000 star hours with two overlapping-field EMCCD cameras, detecting no Kuiper belt objects and one false positive occultation event in a high ecliptic latitude field. No occultations would be expected at these latitudes, allowing these results to provide a control sample for the upcoming main Colibri campaign. The empirical false positive rate found by the processing pipeline is consistent with the 0.002% simulationdetermined false positive rate. We also describe Colibri's software design, kernel sets for modeling stellar occultations, and method for retrieving occultation parameters from noisy diffraction curves. Colibri's main campaign will begin in mid-2018, operating at a 40 Hz sampling rate.

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Origin and Evolution of the Cometary Reservoirs

Cited by 187 publications

References 479 publications

Extinction and the Dimming of KIC 8462852

Extinction and the Dimming of KIC 8462852

The Main Belt Comets and ice in the Solar System

Pipeline for the Detection of Serendipitous Stellar Occultations by Kuiper Belt Objects with the Colibri Fast-photometry Array

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