Search Publications
The Hubble Space Telescope PanCET Program: An Optical to Infrared Transmission Spectrum of HAT-P-32Ab
Nikolov, Nikolay; Mikal-Evans, Thomas; Sing, David K. +14 more
We present a 0.3-5 µm transmission spectrum of the hot Jupiter HAT-P-32Ab observed with the Space Telescope Imaging Spectrograph and Wide Field Camera 3 instruments mounted on the Hubble Space Telescope, combined with Spitzer Infrared Array Camera photometry. The spectrum is composed of 51 spectrophotometric bins with widths ranging between …
Transmission Spectroscopy of WASP-79b from 0.6 to 5.0 µm
Jayaraman, Rahul; Nikolov, Nikolay; Sing, David K. +18 more
As part of the Panchromatic Exoplanet Treasury program, we have conducted a spectroscopic study of WASP-79b, an inflated hot Jupiter orbiting an F-type star in Eridanus with a period of 3.66 days. Building on the original WASP and TRAPPIST photometry of Smalley et al., we examine Hubble Space Telescope (HST)/Wide Field Camera 3 (WFC3) (1.125-1.650…
Exploratory Spectroscopy of Magnetic Cataclysmic Variables Candidates and Other Variable Objects. II
Oliveira, A. S.; Rodrigues, C. V.; Martins, M. +4 more
This is the second paper of a series presenting our search for magnetic cataclysmic variables (mCVs) among candidates selected mostly from the Catalina Real-Time Transient Survey. We present the identification spectra, obtained at the SOAR Telescope, as well as magnitudes and Gaia distances for 45 objects. Of these, 39 objects are identified as CV…
X-Ray Observations of the Peculiar Cepheid V473 Lyr Identify A Low-mass Companion
Drake, Jeremy J.; Evans, Nancy Remage; Marengo, Massimo +17 more
V473 Lyr is a classical Cepheid that is unique in having substantial amplitude variations with a period of approximately 3.3 yr, thought to be similar to the Blazhko variations in RR Lyrae stars. We obtained an XMM-Newton observation of this star to follow up a previous detection in X-rays. Rather than the X-ray burst and rapid decline near maximu…
Chandra Resolves the Double FU Orionis System RNO 1B/1C in X-Rays
Skinner, Stephen L.; Güdel, Manuel
We present new Chandra X-ray observations of the close pair of young stars RNO 1B and 1C (6″ separation) located in the L1287 cloud. RNO 1B erupted in 1978-1990 and is classified as an FU Orionis star (FUor). RNO 1C also shows most of the properties of an FUor but no eruption has been seen yet. Only a few dozen FUors are known and the presence of …