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CSI 2264: Simultaneous Optical and Infrared Light Curves of Young Disk-bearing Stars in NGC 2264 with CoRoT and Spitzer—Evidence for Multiple Origins of Variability
Hora, Joseph; Holtzman, Jon; Aigrain, Suzanne +42 more
We present the Coordinated Synoptic Investigation of NGC 2264, a continuous 30 day multi-wavelength photometric monitoring campaign on more than 1000 young cluster members using 16 telescopes. The unprecedented combination of multi-wavelength, high-precision, high-cadence, and long-duration data opens a new window into the time domain behavior of …
From Binaries to Multiples. I. Data on F and G Dwarfs within 67 pc of the Sun
Tokovinin, Andrei
Data on the multiplicity of F- and G-type dwarf stars within 67 pc of the Sun are presented. This distance-limited sample based on the Hipparcos catalog contains 4847 primary stars (targets) with 0.5 < V - IC < 0.8 and is >90% complete. There are 2196 known stellar pairs; some of them belong to 361 hierarchical systems from tri…
Probing for Exoplanets Hiding in Dusty Debris Disks: Disk Imaging, Characterization, and Exploration with HST/STIS Multi-roll Coronagraphy
Henning, Thomas; Stark, Christopher C.; Weinberger, Alycia J. +16 more
Spatially resolved scattered-light images of circumstellar debris in exoplanetary systems constrain the physical properties and orbits of the dust particles in these systems. They also inform on co-orbiting (but unseen) planets, the systemic architectures, and forces perturbing the starlight-scattering circumstellar material. Using Hubble Space Te…
Type Ia Supernova Rate Measurements to Redshift 2.5 from CANDELS: Searching for Prompt Explosions in the Early Universe
Ferguson, Henry C.; Grogin, Norman A.; Koekemoer, Anton M. +35 more
The Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CANDELS) was a multi-cycle treasury program on the Hubble Space Telescope (HST) that surveyed a total area of ~0.25 deg2 with ~900 HST orbits spread across five fields over three years. Within these survey images we discovered 65 supernovae (SNe) of all types, out to z …
Transmission Spectroscopy of the Hot Jupiter WASP-12b from 0.7 to 5 µm
Madhusudhan, Nikku; Stevenson, Kevin B.; Désert, Jean-Michel +5 more
Since the first report of a potentially non-solar carbon-to-oxygen ratio (C/O) in its dayside atmosphere, the highly irradiated exoplanet WASP-12b has been under intense scrutiny and the subject of many follow-up observations. Additionally, the recent discovery of stellar binary companions ~1'' from WASP-12 has obfuscated interpretation of the obs…
How the Geysers, Tidal Stresses, and Thermal Emission across the South Polar Terrain of Enceladus are Related
Nimmo, Francis; Porco, Carolyn; DiNino, Daiana
We present the first comprehensive examination of the geysering, tidal stresses, and anomalous thermal emission across the south pole of Enceladus and discuss the implications for the moon's thermal history and interior structure. A 6.5 yr survey of the moon's south polar terrain (SPT) by the Cassini imaging experiment has located ~100 jets or gey…
The Solar Neighborhood. XXXIII. Parallax Results from the CTIOPI 0.9 m Program: Trigonometric Parallaxes of Nearby Low-mass Active and Young Systems
Gies, Douglas R.; Nelan, Edmund P.; Blunt, Sarah C. +14 more
We present basic observational data and association membership analysis for 45 young and active low-mass stellar systems from the ongoing Research Consortium On Nearby Stars photometry and astrometry program at the Cerro Tololo Inter-American Observatory. Most of these systems have saturated X-ray emission (log (LX /L bol) &g…
The Type IIb Supernova 2013df and its Cool Supergiant Progenitor
Van Dyk, Schuyler D.; Filippenko, Alexei V.; Foley, Ryan J. +10 more
We have obtained early-time photometry and spectroscopy of supernova (SN) 2013df in NGC 4414. The SN is clearly of Type IIb, with notable similarities to SN 1993J. From its luminosity at secondary maximum light, it appears that less 56Ni (lsim 0.06 M ⊙) was synthesized in the SN 2013df explosion than was the case for the SNe …
Hubble Space Telescope CALSPEC Flux Standards: Sirius (and Vega)
Bohlin, R. C.
The Space Telescope Imaging Spectrograph (STIS) has measured the flux for Sirius from 0.17 to 1.01 µm on the Hubble Space Telescope (HST) White Dwarf scale. Because of the cool debris disk around Vega, Sirius is commonly recommended as the primary IR flux standard. The measured STIS flux agrees well with predictions of a special Kurucz model…
Tidally Modulated Eruptions on Enceladus: Cassini ISS Observations and Models
Nimmo, Francis; Porco, Carolyn; Mitchell, Colin
We use images acquired by the Cassini Imaging Science Subsystem (ISS) to investigate the temporal variation of the brightness and height of the south polar plume of Enceladus. The plume's brightness peaks around the moon's apoapse, but with no systematic variation in scale height with either plume brightness or Enceladus' orbital position. We comp…