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Josh Lothringer

@jlothringer.bsky.social

Assistant Astronomer at @spacetelescope.bsky.social researching exoplanet and brown dwarf atmospheres. Opinions expressed are my own. https://jlothringer.github.io/

52 Posts238 Follower176 Folgt
Erin M. May, PhD@astronomay.bsky.social · 2mo ago

New Paper Day! JHU Grad Student @spschmidt.bsky.social 's paper on the ultra hot Jupiter KELT-7b includes a new method to mitigate charge migration in JWST NIR detectors, and finds a metal rich atmosphere for KELT-7b relative to its metal rich star 🪐⭐ arxiv.org/abs/2607.06708 #Exoplanets 🧪🔭

Mitigating Charge Migration in JWST NIRISS Reveals That KELT-7 b is a Metal-enriched Ultra-hot Jupiter Orbiting a Young Metal-rich Star

We present the first panchromatic JWST transmission spectrum of an ultra-hot Jupiter, combining NIRISS and NIRSpec observations to constrain KELT-7\,b's atmospheric properties. We show evidence for ch...

arxiv.org

Dr Ryan MacDonald@distantworlds.space · 2mo ago

🚨 New research alert 🚨 We have found an atmosphere on a planet orbiting a dead star 🔭✴️💀🪐 Our James Webb Space Telescope (JWST) observations of the white dwarf planet WD 1856b give us a preview into the fate of planets like Jupiter after the death of the Sun. 🧵⬇️ (1/10)

Artist concept of the white dwarf planet WD 1856b Caption: Exoplanet WD 1856 b, shown in this artist’s concept, is a gas giant that survived the death of its star. It now orbits a white dwarf at a distance 50 times closer than Earth orbits the Sun. Observations by NASA’s James Webb Space Telescope not only determined the planet’s temperature but also detected molecules in its atmosphere. The former measurement provides evidence that WD 1856 b migrated to its current location billions of years after its star became a white dwarf. Credits: NASA, ESA, CSA, Ralf Crawford (STScI)
Josh Lothringer@jlothringer.bsky.social · 3mo ago

ICYMI: We wrote a white paper on the transiting exoplanet science that the Hubble Space Telescope can help address in the years to come. There's still a lot that we need the telescope for, and synergy with JWST continues to open new doors. Check it out here: arxiv.org/abs/2606.04144 #exoplanets

Characterizing Transiting Exoplanet Atmospheres in the 2030s with the Hubble Space Telescope

The Hubble Space Telescope inaugurated the era of exoplanet atmospheric characterization. While the James Webb Space Telescope has largely taken up the mantle of infrared atmospheric characterization,...

arxiv.org

Lee Billings@leebillings.bsky.social · 3mo ago

Now on @sciam.bsky.social: NASA's JWST just delivered a fascinating weather report for the distant exoplanet WASP-94A b, finding the gas-giant world has partly cloudy skies. By @krcallaway.bsky.social. www.scientificamerican.com/article/jwst...

Today’s weather forecast is partially cloudy—on exoplanet WASP-94A b

An out-of-this-world weather report from NASA’s James Webb Space Telescope reveals how clouds move across a giant planet hundreds of light-years from Earth

scientificamerican.com

Josh Lothringer@jlothringer.bsky.social · 4mo ago

These are awesome positions where you'll play critical roles in STScI's missions (HST, JWST, Roman)! Definitely apply if interested! Feel free to reach out if you've any questions.

Brett Morris@brettmorr.is · 4mo ago

Graduating with a bachelors or masters in astronomy (or related field)? Want to keep your eyes on the skies without a PhD? Opening for YOU at @stsci.edu: Science Support Analyst on Hubble 🔭 recruiting2.ultipro.com/SPA1004AURA/...

Space Telescope Science Institute@stsci.edu · 4mo ago

Well, isn’t this a sight for sore eyes! 😍 Our beloved Hubble appears in this amazing image from one of Vantor's WorldView Legion satellites. It was 36 years ago today that Hubble was launched in the bay of the Space Shuttle Discovery from NASA’s Kennedy Space Center. Credit: Vantor.

A detailed image of the Hubble Space Telescope floating in space, showing its solar panels and cylindrical body in space.
A. Suárez Mascareño@asuarezmascareno.com · 7mo ago

Been checking the science topics of the proposals approved by the ESO OPC for ESPRESSO. 75% of the time went to one type of proposal. Statistics-focused follow up of transiting systems. There isn't a single proposal focused on discoveries, atmospheres, or anything low-mass planets 🔭#exoplanets

Distribution of the topics of approved proposals for ESPRESSO in Period 117. 74.6 Transit follow up, 3.5% studies of systems around binaries (unclear if its transiting systems), 0.3% for RM studies, 11% for stellar physics, 0.4% for milky way studies, and 10.2% for cosmology.
Josh Lothringer@jlothringer.bsky.social · 8mo ago

ICYMI: Over the winter holidays, my student's paper on KELT-9b was accepted: arxiv.org/abs/2512.19662! With the Hubble Space Telescope's STIS instrument, we find enormous escape of metal ions from the hottest hot Jupiter, KELT-9b! 🪐🔭💫

A High-Resolution NUV Transmission Spectrum of KELT-9b: Mg II and Fe II Escaping from the Hottest Known Giant Planet

We present high-resolution NUV observations from Hubble Space Telescope's (HST) Space Telescope Imaging Spectrograph (STIS) data for the hottest known gas planet, KELT-9b. Observations were collected ...

arxiv.org

Josh Lothringer@jlothringer.bsky.social · 10mo ago

We've collected 65 individual exoplanet atmosphere composition measurements to look for population-level trends 🔭 #exoplanets To do this, we had to create a toolkit to standardize between definitions of . We call it ExoComp. (Yes, that's a Star Trek reference 😀).

A logo with text "ExoComp" with a robot scanning the "O".
Alexandra Witze@alexwitze.bsky.social · 11mo ago

A leading Democrat in the Senate just released an important report documenting how NASA has been working to implement the president's proposed budget, not Congressionally approved funds, in slashing missions. Read more ⬇️

SSpacePolicyOnline@spacepolicyonline.bsky.social · 11mo ago

Sen. Maria Cantwell (D-WA), top Democrat on Senate Commerce Cmte, is out with a Democratic staff report: "The Destruction of NASA's Mission: Whistleblowers Reveal OMB's Unconstitutional Plot to Gut the Agency." www.commerce.senate.gov/services/fil...