The Giant Accreting Protoplanet Survey (GAPlanetS): Optimization Techniques for Robust Detections of Protoplanets

no code yet • 28 Nov 2022

We apply continuum-optimized KLIP reduction parameters to six H$\alpha$ direct detections of the low-mass stellar companion HD142527 B, and recover the companion at a range of separations.

Earth and Planetary Astrophysics Instrumentation and Methods for Astrophysics

TWEETS

Satellite Constellation Avoidance with the Rubin Observatory Legacy Survey of Space and Time

lsst-sims/satellite-dodging-apjl 29 Nov 2022

We investigate a novel satellite avoidance strategy to mitigate the impact of large commercial satellite constellations in low-Earth orbit on the Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST).

Instrumentation and Methods for Astrophysics

TWEETS

Three dimensional magnetorotational core-collapse supernova explosions of a 39 solar mass progenitor star

no code yet • 1 Dec 2022

We perform three-dimensional simulations of magnetorotational supernovae using a $39\, M_{\odot}$ progenitor star with two different initial magnetic field strengths of $10^{10}$ G and $10^{12}$ G in the core.

High Energy Astrophysical Phenomena Solar and Stellar Astrophysics

TWEETS

PHANGS-JWST First Results: Spurring on Star Formation: JWST Reveals Localised Star Formation in a Spiral Arm Spur of NGC 628

no code yet • 30 Nov 2022

The invariance of the star formation efficiency in the spurs versus the spiral arms indicates massive star formation is not only triggered in spiral arms, and cannot simply occur in the arms and then drift away from the wave pattern.

Astrophysics of Galaxies

TWEETS

EIGER III. JWST/NIRCam observations of the ultra-luminous high-redshift quasar J0100+2802

no code yet • 29 Nov 2022

To this end, we also present a newly reduced rest-frame UV spectrum of the quasar observed with X-Shooter/VLT and FIRE/Magellan for a total of 16. 8 hours.

Astrophysics of Galaxies Cosmology and Nongalactic Astrophysics

TWEETS

Signatures of a High Temperature QCD Transition in the Early Universe

no code yet • 30 Nov 2022

These models can also alter the order of the QCD phase transition.

Cosmology and Nongalactic Astrophysics High Energy Astrophysical Phenomena High Energy Physics - Phenomenology

TWEETS

The Solar Neighborhood in the Age of Gaia

no code yet • 30 Nov 2022

Most of what we know about the formation of stars, and essentially everything we know about the formation of planets, comes from observations of our solar neighborhood within 2 kpc of the Sun.

Astrophysics of Galaxies

TWEETS

Spectroscopic time series performance of the Mid-Infrared Instrument on the JWST

no code yet • 29 Nov 2022

We present here the first ever mid-infrared spectroscopic time series observation of the transiting exoplanet \object{L 168-9 b} with the Mid-Infrared Instrument (MIRI) on the James Webb Space Telescope.

Instrumentation and Methods for Astrophysics Earth and Planetary Astrophysics

TWEETS

Nitrogen as a Tracer of Giant Planet Formation. II.: Comprehensive Study of Nitrogen Photochemistry and Implications for Observing NH3 and HCN in Transmission and Emission Spectra

no code yet • 30 Nov 2022

Atmospheric nitrogen may provide important constraints on giant planet formation.

Earth and Planetary Astrophysics

TWEETS

Nitrogen as a Tracer of Giant Planet Formation. I.: A Universal Deep Adiabatic Profile and Semi-analytical Predictions of Disequilibrium Ammonia Abundances in Warm Exoplanetary Atmospheres

no code yet • 30 Nov 2022

We explain this behavior in terms of the classic "radiative zero solution" and then establish a semi-analytical T-P profile of the deep atmospheres of warm exoplanets.

Earth and Planetary Astrophysics

TWEETS