ZTF J0007+4804 is the first known hot subdwarf-white dwarf binary that exhibits SU UMa-type dwarf nova outbursts with a 108.72-minute orbital period.
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21 Pith papers cite this work. Polarity classification is still indexing.
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A ~1 solar-mass main-sequence star with supersolar metallicity has been traced back to the galactic center as a hypervelocity star ejected by the Hills mechanism.
MESA binary models demonstrate that Case C Roche-lobe overflow in 10-20 Msun donors with 1000-2700 Rsun separations produces CSM matching interacting SNe and accounts for ~13% of CCSN progenitors.
MWC 656 hosts a hot stripped star companion of 1.48 solar masses instead of a black hole.
MIST provides a new publicly available grid of solar-scaled stellar isochrones and evolutionary tracks computed self-consistently with MESA from pre-main sequence through advanced stages for masses 0.1-300 solar masses and metallicities -2 to 0.5.
Atmospheric Roche-lobe overflow extends stable mass transfer in WD-giant binaries to q ≲ 1.5 and symbiotic lifetimes of 10^4–10^6 yr, producing distributions consistent with Galactic S-type systems.
Direct inclusion of CMFGEN atmosphere grids in STAREVOL evolution calculations lowers effective temperature and radius in the Wolf-Rayet phase to better match observations while leaving internal structure and chemical evolution unchanged.
The iτSBD magnetic braking model attributes the boost K to irradiation-driven winds and the disruption η to a spike in convective turnover time at the fully convective boundary, yielding CV tracks consistent with observations.
3D MHD simulations of CCSN remnants from RSG and WR stars show faster shocks from photoionization and CSM expansion, plus coherent reflected shocks in WR cases, with weakly magnetized bubbles limiting PeV acceleration.
VLBA observations of Orion young stellar binaries yield Keplerian orbits and dynamical masses for four systems, with two showing agreement to SED-based estimates and one confirming an intermediate-mass star with nonthermal emission.
Accretion feedback caps stellar growth rates below 0.1 solar masses per year in AGN disks, eliminates runaway accretion, and produces higher equilibrium masses and luminosities when gap opening is included.
KIC 3868420 is a newly identified high-amplitude δ Scuti-γ Dor hybrid star in the Hertzsprung gap with best-fit mass 2.26-2.30 solar masses, radius 4.41-4.43 solar radii, and age about 540 million years from frequency matching.
Radiative-transfer models of SN2023ixf require prolonged CSM interaction and a cold dense shell to match its multi-wavelength photospheric evolution from 20 to 120 days.
Asteroseismic ages from TESS calibrate [Y/Mg] and [C/N] chemical clocks, revealing a radially dependent [Y/Mg]-age relation that is steeper in the outer Galactic disc and flatter inward, with NLTE corrections and evolutionary stage accounting required for accuracy.
654 WD-FGK binaries cataloged with mostly low-mass hot white dwarfs formed via binary interactions.
A joint convective coupling index shows moderate, age-dependent correlation with rotation periods of solar-mass stars, stronger in younger objects and weaker later.
Rotating stellar models initialized with observed velocity distributions yield modestly lower initial mass estimates for SN II progenitors than non-rotating models, with an upper limit of 20.4 solar masses.
A moderate factor of 2-3 reduction in magnetic braking efficiency at the fully convective boundary suffices to reproduce key features of cataclysmic variable evolution when using an updated saturated prescription.
Nemesis couples global and local astrophysical simulations to match direct N-body results while scaling efficiently when cores exceed the number of planetary systems.
Three new warm Jupiters (periods 11.3–44.4 days, masses 0.51–1.29 M_J, radii ~0.97–0.98 R_J) were confirmed via TESS photometry and follow-up radial velocities and light curves.
Six seismic solar analogs have masses 0.91-1.04 solar masses, radii 0.95-1.08 solar radii, and ages 1.8-9.1 Gyr, with one star matching the Sun closely enough to be called a solar twin.
citing papers explorer
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Discovery of the first outbursting hot subdwarf binary: ZTF J0007+4804
ZTF J0007+4804 is the first known hot subdwarf-white dwarf binary that exhibits SU UMa-type dwarf nova outbursts with a 108.72-minute orbital period.
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Discovery of Galactic center ejected star in DESI DR1
A ~1 solar-mass main-sequence star with supersolar metallicity has been traced back to the galactic center as a hypervelocity star ejected by the Hills mechanism.
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Interacting Binary Stars as Progenitors for Interacting Supernovae
MESA binary models demonstrate that Case C Roche-lobe overflow in 10-20 Msun donors with 1000-2700 Rsun separations produces CSM matching interacting SNe and accounts for ~13% of CCSN progenitors.
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Ultraviolet spectroscopy reveals a hot and luminous companion to the Be star+black hole candidate MWC 656
MWC 656 hosts a hot stripped star companion of 1.48 solar masses instead of a black hole.
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MESA Isochrones and Stellar Tracks (MIST). I: Solar-Scaled Models
MIST provides a new publicly available grid of solar-scaled stellar isochrones and evolutionary tracks computed self-consistently with MESA from pre-main sequence through advanced stages for masses 0.1-300 solar masses and metallicities -2 to 0.5.
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Revisiting atmospheric Roche lobe overflow in symbiotic binaries
Atmospheric Roche-lobe overflow extends stable mass transfer in WD-giant binaries to q ≲ 1.5 and symbiotic lifetimes of 10^4–10^6 yr, producing distributions consistent with Galactic S-type systems.
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Wolf-Rayet stellar evolution models with improved treatment of the atmosphere
Direct inclusion of CMFGEN atmosphere grids in STAREVOL evolution calculations lowers effective temperature and radius in the Wolf-Rayet phase to better match observations while leaving internal structure and chemical evolution unchanged.
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Mechanisms for magnetic braking boost and disruption: the role of irradiation-driven winds and convective turnover time spike in cataclysmic variables
The iτSBD magnetic braking model attributes the boost K to irradiation-driven winds and the disruption η to a spike in convective turnover time at the fully convective boundary, yielding CV tracks consistent with observations.
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Multi-Dimensional MHD simulations of young Core-Collapse Supernova Remnants
3D MHD simulations of CCSN remnants from RSG and WR stars show faster shocks from photoionization and CSM expansion, plus coherent reflected shocks in WR cases, with weakly magnetized bubbles limiting PeV acceleration.
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Dynamical masses of young stellar objects with the VLBA: DYNAMO-VLBA: Radio binary stars in Orion
VLBA observations of Orion young stellar binaries yield Keplerian orbits and dynamical masses for four systems, with two showing agreement to SED-based estimates and one confirming an intermediate-mass star with nonthermal emission.
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The Effects of Accretion Feedback on Stellar Evolution in AGN Disks
Accretion feedback caps stellar growth rates below 0.1 solar masses per year in AGN disks, eliminates runaway accretion, and produces higher equilibrium masses and luminosities when gap opening is included.
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KIC 3868420: A high-amplitude $\delta$ Scuti-$\gamma$ Dor hybrid star crossing the Hertzsprung gap
KIC 3868420 is a newly identified high-amplitude δ Scuti-γ Dor hybrid star in the Hertzsprung gap with best-fit mass 2.26-2.30 solar masses, radius 4.41-4.43 solar radii, and age about 540 million years from frequency matching.
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SN2023ixf: Radiative-transfer modeling of the photospheric phase evolution from the ultraviolet to the infrared
Radiative-transfer models of SN2023ixf require prolonged CSM interaction and a cold dense shell to match its multi-wavelength photospheric evolution from 20 to 120 days.
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Calibration of the [C/N] and [Y/Mg] chemical clocks with asteroseismic ages from the TESS space mission
Asteroseismic ages from TESS calibrate [Y/Mg] and [C/N] chemical clocks, revealing a radially dependent [Y/Mg]-age relation that is steeper in the outer Galactic disc and flatter inward, with NLTE corrections and evolutionary stage accounting required for accuracy.
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Discovery and Characterization of White Dwarf-FGK Main-Sequence Binaries within the Optical Main-Sequence Locus
654 WD-FGK binaries cataloged with mostly low-mass hot white dwarfs formed via binary interactions.
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How plasma coupling and convective-zone depth shape the rotation of solar-mass stars
A joint convective coupling index shows moderate, age-dependent correlation with rotation periods of solar-mass stars, stronger in younger objects and weaker later.
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Impact of stellar rotation on type II supernova progenitor masses from pre-explosion imaging
Rotating stellar models initialized with observed velocity distributions yield modestly lower initial mass estimates for SN II progenitors than non-rotating models, with an upper limit of 20.4 solar masses.
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A modest change in magnetic braking at the fully convective boundary explains cataclysmic variable evolution
A moderate factor of 2-3 reduction in magnetic braking efficiency at the fully convective boundary suffices to reproduce key features of cataclysmic variable evolution when using an updated saturated prescription.
-
Nemesis: A Multi-Scale, Multi-Physics Algorithm for Astrophysics
Nemesis couples global and local astrophysical simulations to match direct N-body results while scaling efficiently when cores exceed the number of planetary systems.
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PLATOSpec's first results: Three new transiting warm Jupiters from the WINE survey TIC 147027702, TIC 245076932 and TIC 87422071
Three new warm Jupiters (periods 11.3–44.4 days, masses 0.51–1.29 M_J, radii ~0.97–0.98 R_J) were confirmed via TESS photometry and follow-up radial velocities and light curves.
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Characterizing six seismic solar analogs observed by Kepler, K2, and HERMES
Six seismic solar analogs have masses 0.91-1.04 solar masses, radii 0.95-1.08 solar radii, and ages 1.8-9.1 Gyr, with one star matching the Sun closely enough to be called a solar twin.