Ana Glidden
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View article: JWST-TST DREAMS: The Nightside Emission and Chemistry of WASP-17b
JWST-TST DREAMS: The Nightside Emission and Chemistry of WASP-17b Open
Theoretical studies have suggested using planetary infrared excess (PIE) to detect and characterize the thermal emission of transiting and nontransiting exoplanets, although the PIE technique requires empirical validation. Here, we apply t…
View article: The Photochemical Plausibility of Warm Exo-Titans Orbiting M Dwarf Stars
The Photochemical Plausibility of Warm Exo-Titans Orbiting M Dwarf Stars Open
The James Webb Space Telescope (JWST) has begun to spectrally characterize small exoplanets orbiting M dwarf stars, but interpretation of these spectra is ambiguous, with stellar, instrumental, or atmospheric origins possible for apparent …
View article: JWST-TST DREAMS: Sulfur Dioxide in the Atmosphere of the Neptune-mass Planet HAT-P-26 b from NIRSpec G395H Transmission Spectroscopy
JWST-TST DREAMS: Sulfur Dioxide in the Atmosphere of the Neptune-mass Planet HAT-P-26 b from NIRSpec G395H Transmission Spectroscopy Open
We present the James Webb Space Telescope (JWST) transmission spectrum of the exoplanet HAT-P-26 b (18.6 M ⊕ , 6.33 R ⊕ ), based on a single transit observed with the JWST NIRSpec G395H grating. We detect water vapor ( = 4.1), carbon di…
View article: JWST-TST DREAMS: The Nightside Emission and Chemistry of WASP-17b
JWST-TST DREAMS: The Nightside Emission and Chemistry of WASP-17b Open
Theoretical studies have suggested using planetary infrared excess (PIE) to detect and characterize the thermal emission of transiting and non-transiting exoplanets, however the PIE technique requires empirical validation. Here we apply th…
View article: JWST-TST DREAMS: Sulfur dioxide in the atmosphere of the Neptune-mass planet HAT-P-26 b from NIRSpec G395H transmission spectroscopy
JWST-TST DREAMS: Sulfur dioxide in the atmosphere of the Neptune-mass planet HAT-P-26 b from NIRSpec G395H transmission spectroscopy Open
We present the James Webb Space Telescope (JWST) transmission spectrum of the exoplanet HAT-P-26 b (18.6 Earth masses, 6.33 Earth radii), based on a single transit observed with the JWST NIRSpec G395H grating. We detect water vapor (ln B =…
View article: The Photochemical Plausibility of Warm Exo-Titans Orbiting M-Dwarf Stars
The Photochemical Plausibility of Warm Exo-Titans Orbiting M-Dwarf Stars Open
The James Webb Space Telescope (JWST) has begun to spectrally characterize small exoplanets orbiting M-dwarf stars, but interpretation of these spectra is ambiguous, with stellar, instrumental, or atmospheric origins possible for apparent …
View article: JWST-TST DREAMS: NIRSpec/PRISM Transmission Spectroscopy of the Habitable Zone Planet TRAPPIST-1 e
JWST-TST DREAMS: NIRSpec/PRISM Transmission Spectroscopy of the Habitable Zone Planet TRAPPIST-1 e Open
TRAPPIST-1 e is one of the very few rocky exoplanets that is both amenable to atmospheric characterization and resides in the habitable zone of its star—located at a distance from its star such that it might, with the right atmosphere, sus…
View article: JWST-TST DREAMS: Secondary Atmosphere Constraints for the Habitable Zone Planet TRAPPIST-1 e
JWST-TST DREAMS: Secondary Atmosphere Constraints for the Habitable Zone Planet TRAPPIST-1 e Open
The TRAPPIST-1 system offers one of the best opportunities to characterize temperate terrestrial planets beyond our own solar system. Within the TRAPPIST-1 system, planet e stands out as highly likely to sustain surface liquid water if it …
View article: Warm, water-depleted rocky exoplanets with surface ionic liquids: A proposed class for planetary habitability
Warm, water-depleted rocky exoplanets with surface ionic liquids: A proposed class for planetary habitability Open
The discovery of thousands of exoplanets and the emergence of telescopes capable of exoplanet atmospheric characterization have intensified the search for habitable worlds. Due to selection biases, many exoplanets under study are planets d…
View article: JWST-TST DREAMS: A Precise Water Abundance for Hot Jupiter WASP-17b from the NIRISS SOSS Transmission Spectrum
JWST-TST DREAMS: A Precise Water Abundance for Hot Jupiter WASP-17b from the NIRISS SOSS Transmission Spectrum Open
Water has proven to be ubiquitously detected in near-infrared (NIR) transmission spectroscopy observations of hot Jupiter atmospheres, including WASP-17b. However, previous analyses of WASP-17b’s atmosphere based upon Hubble Space Telescop…
View article: JWST-TST DREAMS: A Supersolar Metallicity in WASP-17 b’s Dayside Atmosphere from NIRISS SOSS Eclipse Spectroscopy
JWST-TST DREAMS: A Supersolar Metallicity in WASP-17 b’s Dayside Atmosphere from NIRISS SOSS Eclipse Spectroscopy Open
We present the first emission spectrum of the hot Jupiter WASP-17 b using one eclipse observation from the JWST Near Infrared Imager and Slitless Spectrograph (NIRISS) Single Object Slitless Spectroscopy (SOSS) mode. Covering a wavelength …
View article: JWST-TST DREAMS: A Precise Water Abundance for Hot Jupiter WASP-17b from the NIRISS SOSS Transmission Spectrum
JWST-TST DREAMS: A Precise Water Abundance for Hot Jupiter WASP-17b from the NIRISS SOSS Transmission Spectrum Open
Water has proven to be ubiquitously detected in near-infrared (NIR) transmission spectroscopy observations of hot Jupiter atmospheres, including WASP-17b. However, previous analyses of WASP-17b's atmosphere based upon Hubble Space Telescop…
View article: Reliable Transmission Spectrum Extraction with a Three-parameter Limb-darkening Law
Reliable Transmission Spectrum Extraction with a Three-parameter Limb-darkening Law Open
Stellar limb darkening must be properly accounted for to accurately determine the radii of exoplanets at various wavelengths. The standard approach to address limb darkening involves either using laws with coefficients from modeled stellar…
View article: Reliable Transmission Spectrum Extraction with a Three-Parameter Limb Darkening Law
Reliable Transmission Spectrum Extraction with a Three-Parameter Limb Darkening Law Open
Stellar limb darkening must be properly accounted for to accurately determine the radii of exoplanets at various wavelengths. The standard approach to address limb darkening involves either using laws with coefficients from modelled stella…
View article: JWST-TST DREAMS: A Super-Solar Metallicity in WASP-17 b Dayside Atmosphere from NIRISS SOSS Eclipse Spectroscopy
JWST-TST DREAMS: A Super-Solar Metallicity in WASP-17 b Dayside Atmosphere from NIRISS SOSS Eclipse Spectroscopy Open
We present the first emission spectrum of the hot Jupiter WASP-17 b using one eclipse observation from the JWST Near Infrared Imager and Slitless Spectrograph (NIRISS) Single Object Slitless Spectroscopy (SOSS) mode. Covering a wavelength …
View article: JWST-TST DREAMS: Nonuniform Dayside Emission for WASP-17b from MIRI/LRS
JWST-TST DREAMS: Nonuniform Dayside Emission for WASP-17b from MIRI/LRS Open
We present the first spectroscopic characterization of the dayside atmosphere of WASP-17b in the mid-infrared using a single JWST MIRI/LRS eclipse observation. From forward-model fits to the 5–12 μ m emission spectrum, we tightly constrain…
View article: JWST-TST High Contrast: Achieving Direct Spectroscopy of Faint Substellar Companions Next to Bright Stars with the NIRSpec Integral Field Unit
JWST-TST High Contrast: Achieving Direct Spectroscopy of Faint Substellar Companions Next to Bright Stars with the NIRSpec Integral Field Unit Open
The JWST NIRSpec integral field unit (IFU) presents a unique opportunity to observe directly imaged exoplanets from 3 to 5 μ m at moderate spectral resolution ( R ∼ 2700) and thereby better constrain the composition, disequilibrium chemist…
View article: Atmospheric carbon depletion as a tracer of water oceans and biomass on temperate terrestrial exoplanets
Atmospheric carbon depletion as a tracer of water oceans and biomass on temperate terrestrial exoplanets Open
View article: Can Isotopologues Be Used as Biosignature Gases in Exoplanet Atmospheres?
Can Isotopologues Be Used as Biosignature Gases in Exoplanet Atmospheres? Open
Isotopologue ratios are anticipated to be one of the most promising signs of life that can be observed remotely. On Earth, carbon isotopes have been used for decades as evidence of modern and early metabolic processes. In fact, carbon isot…
View article: Atmospheric carbon depletion as a tracer of water oceans and biomass on temperate terrestrial exoplanets
Atmospheric carbon depletion as a tracer of water oceans and biomass on temperate terrestrial exoplanets Open
The conventional observables to identify a habitable or inhabited environment in exoplanets, such as an ocean glint or abundant atmospheric O$_2$, will be challenging to detect with present or upcoming observatories. Here we suggest a new …
View article: JWST-TST High Contrast: Achieving direct spectroscopy of faint substellar companions next to bright stars with the NIRSpec IFU
JWST-TST High Contrast: Achieving direct spectroscopy of faint substellar companions next to bright stars with the NIRSpec IFU Open
The JWST NIRSpec integral field unit (IFU) presents a unique opportunity to observe directly imaged exoplanets from 3-5 um at moderate spectral resolution (R~2,700) and thereby better constrain the composition, disequilibrium chemistry, an…
View article: JWST-TST DREAMS: Quartz Clouds in the Atmosphere of WASP-17b
JWST-TST DREAMS: Quartz Clouds in the Atmosphere of WASP-17b Open
Clouds are prevalent in many of the exoplanet atmospheres that have been observed to date. For transiting exoplanets, we know if clouds are present because they mute spectral features and cause wavelength-dependent scattering. While the ex…
View article: JWST-TST DREAMS: Quartz Clouds in the Atmosphere of WASP-17b
JWST-TST DREAMS: Quartz Clouds in the Atmosphere of WASP-17b Open
Clouds are prevalent in many of the exoplanet atmospheres that have been observed to date. For transiting exoplanets, we know if clouds are present because they mute spectral features and cause wavelength-dependent scattering. While the ex…
View article: JWST-TST DREAMS: Quartz Clouds in the Atmosphere of WASP-17b
JWST-TST DREAMS: Quartz Clouds in the Atmosphere of WASP-17b Open
Data and models accompanying the publication "JWST-TST DREAMS: Quartz Clouds in the Atmosphere of WASP-17b". Here we include: Data, ExoTiC-MIRI reduction of JWST MIRI LRS transit observations Data, Eureka! reduction of JWST MIRI LRS transi…
View article: JWST-TST DREAMS: Quartz Clouds in the Atmosphere of WASP-17b
JWST-TST DREAMS: Quartz Clouds in the Atmosphere of WASP-17b Open
Data and models accompanying the publication "JWST-TST DREAMS: Quartz Clouds in the Atmosphere of WASP-17b". Here we include: Data, ExoTiC-MIRI reduction of JWST MIRI LRS transit observations Data, Eureka! reduction of JWST MIRI LRS transi…
View article: TESS hunt for young and maturing exoplanets (THYME). V. A sub-neptune transiting a young star in a newly discovered 250myr association
TESS hunt for young and maturing exoplanets (THYME). V. A sub-neptune transiting a young star in a newly discovered 250myr association Open
The detection and characterization of young planetary systems offer a direct path to study the processes that shape planet evolution. We report on the discovery of a sub-Neptune-sized planet orbiting the young star HD 110082 (TOI-1098). Tr…
View article: KELT-25 b and KELT-26 b: A Hot Jupiter and a Substellar Companion Transiting Young A Stars Observed by TESS
KELT-25 b and KELT-26 b: A Hot Jupiter and a Substellar Companion Transiting Young A Stars Observed by TESS Open
We present the discoveries of KELT-25 b (TIC 65412605, TOI-626.01) and KELT-26 b (TIC 160708862, TOI-1337.01), two transiting companions orbiting relatively bright, early A stars. The transit signals were initially detected by the KELT sur…
View article: A planetary system with two transiting mini-Neptunes near the radius valley transition around the bright M dwarf TOI-776
A planetary system with two transiting mini-Neptunes near the radius valley transition around the bright M dwarf TOI-776 Open
We report the discovery and characterization of two transiting planets around the bright M1 V star LP 961-53 (TOI-776, J = 8.5 mag, M = 0.54 ± 0.03 M⊙) detected during Sector 10 observations of the Transiting Exoplanet Survey Satellite (TE…
View article: TESS Hunt for Young and Maturing Exoplanets (THYME). III. A Two-planet System in the 400 Myr Ursa Major Group
TESS Hunt for Young and Maturing Exoplanets (THYME). III. A Two-planet System in the 400 Myr Ursa Major Group Open
Exoplanets can evolve significantly between birth and maturity, as their atmospheres, orbits, and structures are shaped by their environment. Young planets (<1 Gyr) offer an opportunity to probe the critical early stages of this evolution,…
View article: JWST-TST Proper Motions. I. High-precision NIRISS Calibration andLarge Magellanic Cloud Kinematics
JWST-TST Proper Motions. I. High-precision NIRISS Calibration andLarge Magellanic Cloud Kinematics Open
We develop and disseminate effective point-spread functions and geometric-distortion solutions for high-precision astrometry and photometry with the JWST NIRISS instrument. We correct field dependencies and detector effects, and assess the…