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Preliminary Target Selection for the DESI Bright Galaxy Survey (BGS)
Omar Ruiz-Macias, Pauline Zarrouk, Shaun Cole +28
The Dark Energy Spectroscopic Instrument (DESI) will execute a nearly magnitude-limited survey of low redshift galaxies (, median ). Clustering…
Superclusters from velocity divergence fields
J. D. Peñaranda-Rivera, D. L Paipa-León, S. D. Hernández-Charpak +1
Superclusters are a convenient way to partition and characterize the large scale structure of the Universe. In this Letter we explore the advantages of defining superclusters as wa…
MANTRA: A Machine Learning reference lightcurve dataset for astronomical transient event recognition
Mauricio Neira, Catalina Gómez, John F. Suárez-Pérez +5
We introduce MANTRA, an annotated dataset of 4869 transient and 71207 non-transient object lightcurves built from the Catalina Real Time Transient Survey. We provide public access…
Classifying Image Sequences of Astronomical Transients with Deep Neural Networks
Catalina Gómez, Mauricio Neira, Marcela Hernández Hoyos +2
Supervised classification of temporal sequences of astronomical images into meaningful transient astrophysical phenomena has been considered a hard problem because it requires the…