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Optical Polarimetry of KIC 8462852 in May-August 2017
I. A Steele, C. M. Copperwheat, H. E. Jermak +2
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 obser…
Extinction and the Dimming of KIC 8462852
Huan Y. A. Meng, George Rieke, Franky Dubois +11
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…
The First Scattered Light Image of the Debris Disk around the Sco-Cen target HD 129590
Elisabeth Matthews, Sasha Hinkley, Arthur Vigan +7
We present the first scattered light image of the debris disk around HD 129590, a ~1.3 M G1V member of the Scorpius Centaurus association with age ~10-16 Myr. The debris di…
The Northern Arc of Eridani's Debris Ring as Seen by ALMA
Mark Booth, William R. F. Dent, Andrés Jordán +10
We present the first ALMA observations of the closest known extrasolar debris disc. This disc orbits the star Eridani, a K-type star just 3.2pc away. Due to the proximity of th…
SONS: The JCMT legacy survey of debris discs in the submillimetre
Wayne S. Holland, Brenda C. Matthews, Grant M. Kennedy +32
Debris discs are evidence of the ongoing destructive collisions between planetesimals, and their presence around stars also suggests that planets exist in these systems. In this pa…
Periodic Eclipses of the Young Star PDS 110 Discovered with WASP and KELT Photometry
H. P. Osborn, J. E. Rodriguez, M. A. Kenworthy +28
We report the discovery of eclipses by circumstellar disc material associated with the young star PDS 110 in the Ori OB1a association using the SuperWASP and KELT surveys. PDS 110…
A Complete ALMA Map of the Fomalhaut Debris Disk
Meredith A. MacGregor, Luca Matra, Paul Kalas +14
We present ALMA mosaic observations at 1.3 mm (223 GHz) of the Fomalhaut system with a sensitivity of 14 Jy/beam. These observations provide the first millimeter map of the cont…
ALMA observations of the multiplanet system 61 Vir: What lies outside super-Earth systems?
S. Marino, M. C. Wyatt, G. M. Kennedy +4
A decade of surveys has hinted at a possible higher occurrence rate of debris discs in systems hosting low mass planets. This could be due to common favourable forming conditions f…
Predictions for the secondary CO, C and O gas content of debris discs from the destruction of volatile-rich planetesimals
Quentin Kral, Luca Matra, Mark Wyatt +1
This paper uses observations of dusty debris discs, including a growing number of gas detections in these systems, to test our understanding of the origin and evolution of this gas…
The transiting dust clumps in the evolved disk of the Sun-like UXor RZ Psc
Grant M. Kennedy, Matthew A. Kenworthy, Joshua Pepper +4
RZ Psc is a young Sun-like star, long associated with the UXor class of variable stars, which is partially or wholly dimmed by dust clumps several times each year. The system has a…