A5022005879- Stellar, planetary, and galactic studies
- Astro and Planetary Science
- Astronomy and Astrophysical Research
- Astrophysics and Star Formation Studies
- Atmospheric Ozone and Climate
- Planetary Science and Exploration
- Astronomical Observations and Instrumentation
- Geomagnetism and Paleomagnetism Studies
- Adaptive optics and wavefront sensing
- Space Exploration and Technology
- History and Developments in Astronomy
- Solar and Space Plasma Dynamics
- Astrophysics and Cosmic Phenomena
- Spectroscopy and Laser Applications
- Scientific Research and Discoveries
The University of Texas at Austin
2021-2024
University of Redlands
2014
Abstract Atmospheric escape shapes the fate of exoplanets, with statistical evidence for transformative mass loss imprinted across mass–radius–insolation distribution. Here, we present transit spectroscopy highly irradiated, low-gravity, inflated hot Saturn HAT-P-67 b. The Habitable Zone Planet Finder spectra show a detection up to 10% absorption depth 10833 Å helium triplet. 13.8 hr on-sky integration time over 39 nights sample entire planet orbit, uncovering excess preceding by 130...
Capturing planets in the act of losing their atmospheres provides rare opportunities to probe evolution history. This analysis has been enabled by observations helium triplet at 10,833 angstrom, but past studies have focused on narrow time window right around planet’s optical transit. We monitored hot Jupiter HAT-P-32 b using high-resolution spectroscopy from Hobby-Eberly Telescope covering full orbit. detected escaping a 14σ significance,with extended leading and trailing tails spanning...
Most brown dwarfs have atmospheres with temperatures cold enough to form clouds. A variety of materials likely condense, including refractory metal oxides and silicates; the precise compositions crystal structures predicted cloud particles depend on modeling framework used not yet been empirically constrained. Spitzer has shown tentative evidence silicate feature in L dwarf spectra JWST can measure these features many dwarfs. Here, we present new models predict signatures strongest...
Modern astronomical échelle spectrographs produce information-rich 2D echellograms that undergo standard reduction procedures to extracted 1D spectra.The final postprocessing steps of these spectra are often left the end-user scientists, since order operations and algorithm choice may depend on scientific application.Implementing post-processing from scratch acts as a barrier entry newcomers, taxes innovation, erodes reproducibility.Here we assemble streamline collection spectroscopic data...
Application of the radial velocity (RV) technique in near infrared is valuable because diminished impact stellar activity at longer wavelengths, making it particularly advantageous for study late-type stars but also solar-type objects. In this paper, we present IGRINS RV open source python pipeline computing measurements from reduced spectra taken with IGRINS, a R ~ 45,000 spectrograph simultaneous coverage H band (1.49--1.80 $\mu$m) and K (1.96--2.46 $\mu$m). Using modified forward modeling...
Capturing planets in the act of losing their atmospheres provides rare opportunities to probe evolution history. Such analysis has been enabled by observations helium triplet at 10833 \AA, but past studies have focused on narrow time window right around planet's optical transit. We monitored hot Jupiter HAT-P-32 b using high-resolution spectroscopy from Hobby-Eberly Telescope covering full orbit. detected escaping a $14\sigma$ significance, with extended leading and trailing tails spanning...
Atmospheric escape shapes the fate of exoplanets, with statistical evidence for transformative mass loss imprinted across mass-radius-insolation distribution. Here we present transit spectroscopy highly irradiated, low-gravity, inflated hot Saturn HAT-P-67 b. The Habitable Zone Planet Finder (HPF) spectra show a detection up to 10% absorption depth 10833 Angstrom Helium triplet. 13.8 hours on-sky integration time over 39 nights sample entire planet orbit, uncovering excess preceding by 130...
Most brown dwarfs have atmospheres with temperatures cold enough to form clouds. A variety of materials likely condense, including refractory metal oxides and silicates; the precise compositions crystal structures predicted cloud particles depend on modeling framework used not yet been empirically constrained. Spitzer has shown tentative evidence silicate feature in L dwarf spectra JWST can measure these features many dwarfs. Here, we present new models predict signatures strongest...
Application of the radial velocity (RV) technique in near infrared is valuable because diminished impact stellar activity at longer wavelengths, making it particularly advantageous for study late-type stars but also solar-type objects. In this paper, we present IGRINS RV open source python pipeline computing measurements from reduced spectra taken with IGRINS, a R ~ 45,000 spectrograph simultaneous coverage H band (1.49--1.80 $\mu$m) and K (1.96--2.46 $\mu$m). Using modified forward modeling...