196 citations · 2.8k across the 144 of their papers we have counts for
6 papers · 1 filter
Automatic Classification of Variable Stars in Catalogs with missing data
Karim Pichara, Pavlos Protopapas
We present an automatic classification method for astronomical catalogs with missing data. We use Bayesian networks, a probabilistic graphical model, that allows us to perform infe…
Planck and the local Universe: quantifying the tension
Licia Verde, Pavlos Protopapas, Raul Jimenez
We use the latest Planck constraints, and in particular constraints on the derived parameters (Hubble constant and age of the Universe) for the local universe and compare them with…
An improved quasar detection method in EROS-2 and MACHO LMC datasets
Karim Pichara, Pavlos Protopapas, Dae-Won Kim +2
We present a new classification method for quasar identification in the EROS-2 and MACHO datasets based on a boosted version of Random Forest classifier. We use a set of variabilit…
Statistical Properties of Galactic δ Scuti Stars: Revisited
Seo-Won Chang, Pavlos Protopapas, Dae-Won Kim +1
We present statistical characteristics of 1,578 δ Scuti stars including nearby field stars and cluster member stars within the Milky Way. We obtained 46% of these stars (718 stars)…
The TAOS Project: Results From Seven Years of Survey Data
Z. -W. Zhang, M. J. Lehner, J. -H. Wang +19
The Taiwanese-American Occultation Survey (TAOS) aims to detect serendipitous occultations of stars by small (about 1 km diameter) objects in the Kuiper Belt and beyond. Such event…
Semi-parametric Robust Event Detection for Massive Time-Domain Databases
Alexander W Blocker, Pavlos Protopapas
The detection and analysis of events within massive collections of time-series has become an extremely important task for time-domain astronomy. In particular, many scientific inve…