Astrophysical: Exoplanet atmospheres

  • Publication
    A Multiwavelength Look at the GJ 9827 System: No Evidence of Extended Atmospheres in GJ 9827b and d from HST and CARMENES Data

    GJ 9827 is a bright star hosting a planetary system with three transiting planets. As a multiplanet system with planets that sprawl within the boundaries of the...

  • Publication
    A Near-infrared Chemical Inventory of the Atmosphere of 55 Cancri e

    We present high-resolution near-infrared spectra taken during eight transits of 55 Cancri e, a nearby low-density super-Earth with a short orbital period (<18...

  • News
    A super-Earth is discovered which can be used to test planetary atmosphere models

    During the past 25 years astronomers have discovered a wide variety of exoplanets, made of rock, ice and gas, thanks to the construction of astronomical...

  • Publication
    ARES. V. No Evidence For Molecular Absorption in the HST WFC3 Spectrum of GJ 1132 b

    We present a study on the spatially scanned spectroscopic observations of the transit of GJ 1132 b, a warm (∼500 K) super-Earth (1.13 R⊕) that was obtained with...

  • Publication
    Detection of Carbon Monoxide in the Atmosphere of WASP-39b Applying Standard Cross-correlation Techniques to JWST NIRSpec G395H Data

    Carbon monoxide was recently reported in the atmosphere of the hot Jupiter WASP-39b using the NIRSpec PRISM transit observation of this planet, collected as...

  • Publication
    Detection of Carbon Monoxide's 4.6 Micron Fundamental Band Structure in WASP-39b's Atmosphere with JWST NIRSpec G395H

    Carbon monoxide (CO) is predicted to be the dominant carbon-bearing molecule in giant planet atmospheres and, along with water, is important for discerning the...

  • Publication
    Detection of Ionized Calcium in the Atmosphere of the Ultra-hot Jupiter KELT-9b

    With a dayside temperature in excess of 4500 K, comparable to a mid-K-type star, KELT-9b is the hottest planet known. Its extreme temperature makes KELT-9b a...

  • Publication
    Detection of Na and K in the Atmosphere of the Hot Jupiter HAT-P-1b with P200/DBSP

    We present a new optical transmission spectrum of the hot Jupiter HAT-P-1b based on two transits observed with the Double Spectrograph (DBSP) on the Palomar 200...