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HAT-P-13: a multi-site campaign to detect the transit of the second planet in the system
Gy. M. Szabó, L. L. Kiss, J. M. Benkő +10
A possible transit of HAT-P-13c has been predicted to occur on 2010 April 28. Here we report on the results of a multi-site campaign that has been organised to detect the event. CC…
The Mid-Infrared Period-Luminosity Relations for the Small Magellanic Cloud Cepheids Derived from Spitzer Archival Data
Chow-Choong Ngeow, Shashi M. Kanbur
In this paper we derive the Spitzer IRAC band period-luminosity (P-L) relations for the Small Magellanic Cloud (SMC) Cepheids, by matching the Spitzer archival SAGE-SMC data with t…
Period-Color and Amplitude-Color Relations in Classical Cepheid Variables - VI. New Challenges for Pulsation Models
S. Kanbur, M. Marconi, C. Ngeow +5
We present multiphase Period-Color/Amplitude-Color/Period-Luminosity relations using OGLE III and Galactic Cepheid data and compare with state of the art theoretical pulsation mode…
Cepheid Period-Luminosity Relation from the AKARI Observations
Chow-Choong Ngeow, Yoshifusa Ita, Shashi M. Kanbur +3
In this paper, we derive the period-luminosity (P-L) relation for Large Magellanic Cloud (LMC) Cepheids based on mid-infrared AKARI observations. AKARI's IRC sources were matched t…
Approximating RR Lyrae light curves using cubic polynomials
Steven Reyner, Shashi M. Kanbur, C. Ngeow +1
In this paper, we use cubic polynomials to approximate RR Lyrae light curves and apply the method to HST data of RR Lyraes in the halo of M31. We compare our method to the standard…
Testing Mass Loss in Large Magellanic Cloud Cepheids using Infrared and Optical Observations II. Predictions and Tests of the OGLE-III Fundamental-Mode Cepheids
Hilding R. Neilson, Chow-Choong Ngeow, Shashi Kanbur +1
In this article, we test the hypothesis that Cepheids have infrared excesses due to mass loss. We fit a model using the mass-loss rate and the stellar radius as free parameters to…