NLTE calculations indicate strontium is required to explain the onset of the 1μm feature at early times in AT2017gfo, while helium can dominate at later epochs with plausible masses.
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Multi-wavelength data on Aql X-1's 2024 outburst reveal an optical lead of up to 13 days over X-rays and a 12-hour hard-to-soft state transition.
First direct H2 measurements in two CO-rich exocometary belts yield CO/H2 lower limits of >1.35e-3 and >3.09e-5, showing the gas is H2-poor and supporting secondary exocometary origin.
Stellar mass functions in the peaks of the Hyperion protostructure at z~2.5 show a mass-dependent excess relative to the field, with ~10x enhancement at log(M*/M⊙)~11 versus ~3.5x at log(M*/M⊙)~9.5.
Horizontal quenching at wind speeds ≳500 m/s, plus carbon-sulfur chemistry, explains the MIRI non-detection of night-side methane on WASP-43 b without requiring high metallicity.
Tentative CO detection from WASP-33b eclipse data alone with SPIRou validates stacking ingresses/egresses and shows Doppler eclipse mapping can constrain rotation with additional observations.
Hybrid deep learning models recover large frequency separation, frequency of maximum power, and dipole period spacing from low-resolution Gaia XP spectra with accuracy comparable to moderate-resolution spectroscopy.
In the SUBWAYS sample, UFO-hosting AGN show larger radio extent and steep spectra consistent with wind-driven shocks, while ~80% of sources show outflow-like radio emission.
ALMA observations of 100 Ophiuchus discs show substructures linked to giant planet formation are common in discs above 10 Earth masses of dust and increase from Class I to Class II stages.
New F200W-dropout candidates in CEERS include three massive dusty dwarfs at 2<z<3 and five sources with bimodal redshift PDFs favoring either z>15 or z<1.5 extreme dust.
citing papers explorer
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Strontium and helium in the kilonova AT2017gfo: Origin of the 1{\mu}m feature constrained via NLTE calculations
NLTE calculations indicate strontium is required to explain the onset of the 1μm feature at early times in AT2017gfo, while helium can dominate at later epochs with plausible masses.
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Aql X-1 from dawn 'til dusk: the early rise, fast state transition and decay of its 2024 outburst
Multi-wavelength data on Aql X-1's 2024 outburst reveal an optical lead of up to 13 days over X-rays and a 12-hour hard-to-soft state transition.
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High CO/H2 ratios supports an exocometary origin for a CO-rich debris disk
First direct H2 measurements in two CO-rich exocometary belts yield CO/H2 lower limits of >1.35e-3 and >3.09e-5, showing the gas is H2-poor and supporting secondary exocometary origin.
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The HST-Hyperion Survey: Environmental Imprints on the Stellar-Mass Function at z~2.5
Stellar mass functions in the peaks of the Hyperion protostructure at z~2.5 show a mass-dependent excess relative to the field, with ~10x enhancement at log(M*/M⊙)~11 versus ~3.5x at log(M*/M⊙)~9.5.
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Phase-dependent chemistry of WASP-43 b revealed with a suite of one-, two-, and three-dimensional models
Horizontal quenching at wind speeds ≳500 m/s, plus carbon-sulfur chemistry, explains the MIRI non-detection of night-side methane on WASP-43 b without requiring high metallicity.
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Towards Doppler eclipse mapping of hot Jupiters. An observational perspective on WASP-33 b with SPIRou
Tentative CO detection from WASP-33b eclipse data alone with SPIRou validates stacking ingresses/egresses and shows Doppler eclipse mapping can constrain rotation with additional observations.
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Potential of Gaia XP Spectra in Red Giant Star Asteroseismology: A Deep-Learning Approach
Hybrid deep learning models recover large frequency separation, frequency of maximum power, and dipole period spacing from low-resolution Gaia XP spectra with accuracy comparable to moderate-resolution spectroscopy.
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Supermassive Black Hole Winds in X-rays: SUBWAYS IV. Tracing Radio Emission and Unveiling the Role of Winds
In the SUBWAYS sample, UFO-hosting AGN show larger radio extent and steep spectra consistent with wind-driven shocks, while ~80% of sources show outflow-like radio emission.
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The Ophiuchus DIsc Survey Employing ALMA (ODISEA). Substructures as a function of SED Class and disc mass in 100 systems
ALMA observations of 100 Ophiuchus discs show substructures linked to giant planet formation are common in discs above 10 Earth masses of dust and increase from Class I to Class II stages.
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Ultra High-Redshift or Closer-by, Dust-Obscured Galaxies? Deciphering the Nature of Faint, Previously Missed F200W-Dropouts in CEERS
New F200W-dropout candidates in CEERS include three massive dusty dwarfs at 2<z<3 and five sources with bimodal redshift PDFs favoring either z>15 or z<1.5 extreme dust.