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SOUSA: the Swift Optical/Ultraviolet Supernova Archive

Kuin, Paul; Brown, Peter J.; Holland, Stephen +2 more

The Ultra-Violet Optical Telescope on the Swift spacecraft has observed hundreds of supernovae, covering all major types and most subtypes. Here we introduce the Swift Optical/Ultraviolet Supernova Archive (SOUSA), which will contain all of the supernova images and photometry. We describe the observation and reduction procedures and how they impac…

Searching for a gas cloud surrounding the WASP-18 planetary system

Fossati, L.; Kochukhov, O.; Bohlender, D. +5 more

Near-UV (NUV) Hubble Space Telescope (HST) observations of the extreme hot-Jupiter WASP-12b revealed the presence of diffuse exospheric gas extending beyond the planet's Roche lobe. Furthermore the NUV observations showed a complete lack of the normally bright core emission of the Mg II h&k resonance lines, in agreement with the measured anomalous…

The ultraviolet radiation environment in the habitable zones around low-mass exoplanet host stars

Loyd, R. O. Parke; France, Kevin; Linsky, Jeffrey L.

The EUV (200–911 Å), FUV (912–1750 Å), and NUV (1750–3200 Å) spectral energy distribution of exoplanet host stars has a profound influence on the atmospheres of Earth-like planets in the habitable zone. The stellar EUV radiation drives atmospheric heating, while the FUV (in particular, Lyα) and NUV radiation fields regulate the atmospheric chemist…

The local ISM in three dimensions: kinematics, morphology and physical properties

Redfield, Seth; Linsky, Jeffrey L.

We summarize the results of our long-term program to study the kinematics, morphology, and physical properties of warm partially ionized interstellar gas located within 100 pc of the Sun. Using the Space Telescope Imaging Spectrograph (STIS) and other spectrographs on the Hubble Space Telescope (HST), we measure radial velocities of neutral and si…

Old stellar systems in UV: resolved and integrated properties

Dalessandro, E.

The UV properties of old stellar populations have been subject of intense scrutiny from the late sixties, when the UV-upturn in early type galaxies was first discovered. Because of their proximity and relative simplicity, Galactic globular clusters (GGCs) are ideal local templates to understand how the integrated UV light is driven by hot stellar …