Search Results - "Catelan, M."

Horizontal branch stars: the interplay between observations and theory, and insights into the formation of the Galaxy by Catelan, M.

“…We review and discuss horizontal branch (HB) stars in a broad astrophysical context, including both variable and non-variable stars. A reassessment of the…”
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Neutrino and axion bounds from the globular cluster M5 (NGC 5904) by Viaux, N, Catelan, M, Stetson, P B, Raffelt, G G, Redondo, J, Valcarce, A A R, Weiss, A

“…The red-giant branch (RGB) in globular clusters is extended to larger brightness if the degenerate helium core loses too much energy in "dark channels." Based…”
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Scalable end-to-end recurrent neural network for variable star classification by Becker, I, Pichara, K, Catelan, M, Protopapas, P, Aguirre, C, Nikzat, F

“…ABSTRACT During the last decade, considerable effort has been made to perform automatic classification of variable stars using machine-learning techniques…”
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Semi-supervised classification and clustering analysis for variable stars by Pantoja, R, Catelan, M, Pichara, K, Protopapas, P

“…ABSTRACT The immense amount of time series data produced by astronomical surveys has called for the use of machine learning algorithms to discover and classify…”
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Discovery of ∼9000 new RR Lyrae in the southern Catalina surveys by Torrealba, G., Catelan, M., Drake, A. J., Djorgovski, S. G., McNaught, R. H., Belokurov, V., Koposov, S., Graham, M. J., Mahabal, A., Larson, S., Christensen, E.

“…We present the results of a deep, wide-area variability survey in the Southern hemisphere, the first of its kind. As part of the Catalina Sky Surveys, the…”
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First Results from the Catalina Real-Time Transient Survey by Drake, A. J, Djorgovski, S. G, Mahabal, A, Beshore, E, Larson, S, Graham, M. J, Williams, R, Christensen, E, Catelan, M, Boattini, A, Gibbs, A, Hill, R, Kowalski, R

“…We report on the results from the first six months of the Catalina Real-Time Transient Survey (CRTS). In order to search for optical transients (OTs) with…”
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Updated Electron-Conduction Opacities: The Impact on Low-Mass Stellar Models by Cassisi, S, Potekhin, A. Y, Pietrinferni, A, Catelan, M, Salaris, M

“…We review the theory of electron-conduction opacity, a fundamental ingredient in the computation of low-mass stellar models; shortcomings and limitations of…”
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On the Oosterhoff dichotomy in the Galactic bulge: I. Spatial distribution by Prudil, Z, Dékány, I, Catelan, M, Smolec, R, Grebel, E K, Skarka, M

“…Abstract We present a study of the Oosterhoff (Oo) dichotomy in the Galactic bulge using 8141 fundamental-mode RR Lyrae stars. We used public photometric data…”
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Cataclysmic variables from the Catalina Real-time Transient Survey by Drake, A. J., Gänsicke, B. T., Djorgovski, S. G., Wils, P., Mahabal, A. A., Graham, M. J., Yang, T.-C., Williams, R., Catelan, M., Prieto, J. L., Donalek, C., Larson, S., Christensen, E.

“…We present 855 cataclysmic variable candidates detected by the Catalina Real-time Transient Survey (CRTS) of which at least 137 have been spectroscopically…”
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PROBING THE OUTER GALACTIC HALO WITH RR LYRAE FROM THE CATALINA SURVEYS by Drake, A J, Catelan, M, Djorgovski, S G, Torrealba, G, Graham, M J, Belokurov, V, Koposov, S E, Mahabal, A, Prieto, J L, Donalek, C, Williams, R, Larson, S, Christensen, E, BESHORE, E

“…We present analysis of 12,227 type-ab RR Lyraes (RRLs) found among the 200 million public light curves in Catalina Surveys Data Release 1. These stars span the…”
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Blazhko modulation in the infrared by Jurcsik, J, Hajdu, G, Dékány, I, Nuspl, J, Catelan, M, Grebel, E K

“…Abstract We present first direct evidence of modulation in the K band of Blazhko-type RR Lyrae stars that are identified by their secular modulations in the…”
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Alert Classification for the ALeRCE Broker System: The Anomaly Detector by Perez-Carrasco, Manuel, Cabrera-Vives, Guillermo, Hernandez-García, Lorena, Förster, F., Sanchez-Saez, Paula, Muñoz Arancibia, Alejandra M., Arredondo, Javier, Astorga, Nicolás, Bauer, Franz E., Bayo, Amelia, Catelan, M., Dastidar, Raya, Estévez, P. A., Lira, Paulina, Pignata, Giuliano

“…Abstract Astronomical broker systems, such as Automatic Learning for the Rapid Classification of Events (ALeRCE), are currently analyzing hundreds of thousands…”
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A Segmented Period–Luminosity Relation for Nearby Extragalactic Delta Scuti Stars by Martínez-Vázquez, C. E., Salinas, R., Vivas, A. K., Catelan, M.

“…Abstract The period–luminosity relations (PLRs) of Milky Way δ Scuti ( δ Sct) stars have been described to the present day by a linear relation. However, when…”
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Large-amplitude periodic outbursts and long-period variables in the VVV VIRAC2-β data base by Guo, Zhen, Lucas, P W, Smith, L C, Clarke, C, Contreras Peña, C, Bayo, A, Briceño, C, Elias, J, Kurtev, R G, Borissova, J, Alonso-García, J, Minniti, D, Catelan, M, Nikzat, F, Morris, C, Miller, N

“…ABSTRACT The VISTA Variables in the Via Lactea (VVV) survey obtained near-infrared photometry towards the Galactic bulge and the southern disc plane for a…”
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EVIDENCE FOR A MILKY WAY TIDAL STREAM REACHING BEYOND 100 kpc by Drake, A J, Catelan, M, Djorgovski, S G, Torrealba, G, Graham, M J, Mahabal, A, Prieto, J L, Donalek, C, Williams, R, Larson, S, Christensen, E, BESHORE, E

“…We present the analysis of 1207 RR Lyrae found in photometry taken by the Catalina Survey's Mount Lemmon telescope. By combining accurate distances for these…”
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Unmixing the Galactic halo with RR Lyrae tagging by Belokurov, V, Deason, A J, Koposov, S E, Catelan, M, Erkal, D, Drake, A J, Evans, N W

“…Abstract We show that tagging RR Lyrae stars according to their location in the period–amplitude diagram can be used to shed light on the genesis of the…”
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Informative Bayesian model selection for RR Lyrae star classifiers by Pérez-Galarce, F, Pichara, K, Huijse, P, Catelan, M, Mery, D

“…ABSTRACT Machine learning has achieved an important role in the automatic classification of variable stars, and several classifiers have been proposed over the…”
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Results of a systematic search for outburst events in 1.4 million galaxies by Drake, A J, Djorgovski, S G, Graham, M J, Stern, D, Mahabal, A A, Catelan, M, Christensen, E, Larson, S

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Discovery of similar to 9000 new RR Lyrae in the southern Catalina surveys by Torrealba, G, Catelan, M, Drake, A J, Djorgovski, S G, McNaught, R H, Belokurov, V, Koposov, S, Graham, M J, Mahabal, A, Larson, S, Christensen, E

“…We present the results of a deep, wide-area variability survey in the Southern hemisphere, the first of its kind. As part of the Catalina Sky Surveys, the…”
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On the Oosterhoff dichotomy in the Galactic bulge – II. Kinematical distribution by Prudil, Z, Dékány, I, Grebel, E K, Catelan, M, Skarka, M, Smolec, R

“…ABSTRACT We present a kinematical study of RR Lyrae stars associated with two Oosterhoff groups in the Galactic bulge. We used data published in the first…”
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