JWST-TST DREAMS: A Precise Water Abundance for Hot Jupiter WASP-17b from the NIRISS SOSS Transmission Spectrum

Posted by dbos MIT, This Week: Astrophysics

Kavli Affiliate: Sara Seager | First 5 Authors: Dana R. Louie, Elijah Mullens, Lili Alderson, Ana Glidden, Nikole K. Lewis | Summary: 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 Telescope (HST) and Spitzer […]


Continue.. JWST-TST DREAMS: A Precise Water Abundance for Hot Jupiter WASP-17b from the NIRISS SOSS Transmission Spectrum

A Lower Mass Estimate for PSR J0348+0432 Based on CHIME/Pulsar Precision Timing

Posted by dbos MIT, This Week: Astrophysics

Kavli Affiliate: Kiyoshi W. Masui | First 5 Authors: Alexander Saffer, Emmanuel Fonseca, Scott Ransom, Ingrid Stairs, Ryan Lynch | Summary: The binary pulsar J0348+0432 was previously shown to have a mass of approximately 2,${rm M_odot}$, based on the combination of radial-velocity and model-dependent mass parameters derived from high-resolution optical spectroscopy of its white-dwarf companion. […]


Continue.. A Lower Mass Estimate for PSR J0348+0432 Based on CHIME/Pulsar Precision Timing

Discovery and Characterization of an Eccentric, Warm Saturn Transiting the Solar Analog TOI-4994

Posted by dbos MIT, This Week: Astrophysics

Kavli Affiliate: Sara Seager | First 5 Authors: Romy Rodriguez Martinez, Jason D. Eastman, Karen Collins, Joseph Rodriguez, David Charbonneau | Summary: We present the detection and characterization of TOI-4994b (TIC 277128619b), a warm Saturn-sized planet discovered by the NASA Transiting Exoplanet Survey Satellite (TESS). TOI-4994b transits a G-type star (V = 12.6 mag) with […]


Continue.. Discovery and Characterization of an Eccentric, Warm Saturn Transiting the Solar Analog TOI-4994

Three Warm Jupiters orbiting TOI-6628, TOI-3837, TOI-5027 and one sub-Saturn orbiting TOI-2328

Posted by dbos MIT, This Week: Astrophysics

Kavli Affiliate: George Ricker | First 5 Authors: Marcelo Tala Pinto, Andrés Jordán, Lorena Acuña, Matías Jones, Rafael Brahm | Summary: We report the discovery and characterization of three new transiting giant planets orbiting TOI-6628, TOI-3837 and TOI-5027, and one new warm sub-Saturn orbiting TOI-2328, whose transits events were detected in the lightcurves of the […]


Continue.. Three Warm Jupiters orbiting TOI-6628, TOI-3837, TOI-5027 and one sub-Saturn orbiting TOI-2328

A gravitational wave detectable candidate Type Ia supernova progenitor

Posted by dbos MIT

Kavli Affiliate: Erin Kara | First 5 Authors: Emma T. Chickles, Kevin B. Burdge, Joheen Chakraborty, Vik S. Dhillon, Paul Draghis | Summary: Type Ia supernovae, critical for studying cosmic expansion, arise from thermonuclear explosions of white dwarfs, but their precise progenitor pathways remain unclear. Growing evidence supports the “double-degenerate” scenario, where two white dwarfs […]


Continue.. A gravitational wave detectable candidate Type Ia supernova progenitor

A gravitational wave detectable candidate Type Ia supernova progenitor

Posted by dbos MIT

Kavli Affiliate: Scott A. Hughes | First 5 Authors: Emma T. Chickles, Kevin B. Burdge, Joheen Chakraborty, Vik S. Dhillon, Paul Draghis | Summary: Type Ia supernovae, critical for studying cosmic expansion, arise from thermonuclear explosions of white dwarfs, but their precise progenitor pathways remain unclear. Growing evidence supports the “double-degenerate” scenario, where two white […]


Continue.. A gravitational wave detectable candidate Type Ia supernova progenitor

A gravitational wave detectable candidate Type Ia supernova progenitor

Posted by dbos MIT

Kavli Affiliate: Anna Frebel | First 5 Authors: Emma T. Chickles, Kevin B. Burdge, Joheen Chakraborty, Vik S. Dhillon, Paul Draghis | Summary: Type Ia supernovae, critical for studying cosmic expansion, arise from thermonuclear explosions of white dwarfs, but their precise progenitor pathways remain unclear. Growing evidence supports the “double-degenerate” scenario, where two white dwarfs […]


Continue.. A gravitational wave detectable candidate Type Ia supernova progenitor

A gravitational wave detectable candidate Type Ia supernova progenitor

Posted by dbos MIT

Kavli Affiliate: Deepto Chakrabarty | First 5 Authors: Emma T. Chickles, Kevin B. Burdge, Joheen Chakraborty, Vik S. Dhillon, Paul Draghis | Summary: Type Ia supernovae, critical for studying cosmic expansion, arise from thermonuclear explosions of white dwarfs, but their precise progenitor pathways remain unclear. Growing evidence supports the “double-degenerate” scenario, where two white dwarfs […]


Continue.. A gravitational wave detectable candidate Type Ia supernova progenitor

A gravitational wave detectable candidate Type Ia supernova progenitor

Posted by dbos MIT

Kavli Affiliate: Erin Kara | First 5 Authors: Emma T. Chickles, Kevin B. Burdge, Joheen Chakraborty, Vik S. Dhillon, Paul Draghis | Summary: Type Ia supernovae, critical for studying cosmic expansion, arise from thermonuclear explosions of white dwarfs, but their precise progenitor pathways remain unclear. Growing evidence supports the “double-degenerate” scenario, where two white dwarfs […]


Continue.. A gravitational wave detectable candidate Type Ia supernova progenitor

A gravitational wave detectable candidate Type Ia supernova progenitor

Posted by dbos MIT

Kavli Affiliate: Scott A. Hughes | First 5 Authors: Emma T. Chickles, Kevin B. Burdge, Joheen Chakraborty, Vik S. Dhillon, Paul Draghis | Summary: Type Ia supernovae, critical for studying cosmic expansion, arise from thermonuclear explosions of white dwarfs, but their precise progenitor pathways remain unclear. Growing evidence supports the “double-degenerate” scenario, where two white […]


Continue.. A gravitational wave detectable candidate Type Ia supernova progenitor