[ascl:2602.018]
Tails: Identify and localize comets in image data
Duev, Dmitry A.;
Bolin, Bryce T.;
Graham, Matthew J.;
Kelley, Michael S. P.;
Mahabal, Ashish;
Bellm, Eric C.;
Coughlin, Michael W.;
Dekany, Richard;
Helou, George;
Kulkarni, Shrinivas R.;
Masci, Frank J.;
Prince, Thomas A.;
Riddle, Reed;
Soumagnac, Maayane T.;
van der Walt, Stéfan J.
Tails identifies and localizes comets in image data from the Zwicky Transient Facility (ZTF), a robotic optical sky survey, using deep-learning with a custom EfficientDet-based architecture. It detects comets in single images in near real time, rather than requiring multiple epochs as in traditional methods. In production, Tails achieves 99% recall, a false positive rate below 0.01%, and 1–2 pixel root mean square error in the predicted position.
[ascl:2112.009]
AsteroGaP: Asteroid Gaussian Processes
Willecke Lindberg, Christina;
Huppenkothen, Daniela;
Jones, R. Lynne;
Bolin, Bryce T.;
Juric, Mario;
Golkhou, V. Zach;
Bellm, Eric C.;
Drake, Andrew J.;
Graham, Matthew J.;
Laher, Russ R.;
Mahabal, Ashish A.;
Masci, Frank J.;
Riddle, Reed;
Shin, Kyung Min
The Bayesian-based Gaussian Process model AsteroGaP (Asteroid Gaussian Processes) fits sparsely-sampled asteroid light curves. By utilizing a more flexible Gaussian Process framework for modeling asteroid light curves, it is able to represent light curves in a periodic but non-sinusoidal manner.
[ascl:1907.017]
ZChecker: Zwicky Transient Facility moving target checker for short object lists
Kelley, Michael S.P.;
Bodewits, Dennis;
Ye, Qaunzhi;
Laher, Russ R.;
Masci, Frank J.;
Monkewitz, Serge;
Riddle, Reed;
Rusholme, Ben;
Shupe, David L;
Soumagnac, Maayane T.
ZChecker finds, measures, and visualizes known comets in the Zwicky Transient Facility time-domain survey. Images of targets are identified using on-line ephemeris generation and survey metadata. The photometry of the targets are measured and the images are processed with temporal filtering to highlight morphological variations in time.