Results 1 to 10 of about 24,445,127 (303)
The influence of metallicity on helium and CO core masses in massive stars [PDF]
Serbian Astronomical Journal, 2023 We present the results of 58 detailed evolutionary models of massive single stars and close binary systems with the Solar and Small Magellanic Cloud (SMC) metallicity computed with the MESA (Modules for Experiments in Stellar Astrophysics ...
Petrović Jelena
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Two Warm Super-Earths Transiting the Nearby M Dwarf TOI-2095
The Astronomical Journal, 2023 We report the detection and validation of two planets orbiting TOI-2095 (TIC 235678745). The host star is a 3700 K M1V dwarf with a high proper motion. The star lies at a distance of 42 pc in a sparsely populated portion of the sky and is bright in the ...
Elisa V. Quintana +58 more
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HAZMAT. IX. An Analysis of the UV and X-Ray Evolution of Low-mass Stars in the Era of Gaia
The Astrophysical Journal, 2023 Low-mass stars (≤1 M _⊙ ) are some of the best candidates for hosting planets with detectable life because of these stars’ long lifetimes and relative ratios of planet to star mass and radius.
Tyler Richey-Yowell +8 more
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The Astronomical Journal, 2023 The high-energy X-ray and ultraviolet (UV) radiation fields of exoplanet host stars play a crucial role in controlling the atmospheric conditions and the potential habitability of exoplanets.
Alexander Brown +10 more
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Mass Distribution for Single-lined Hot Subdwarf Stars in LAMOST
The Astrophysical Journal, 2023 Masses for 664 single-lined hot subdwarf stars identified in LAMOST were calculated by comparing synthetic fluxes from spectral energy distribution with observed fluxes from a Virtual Observatory service.
Zhenxin Lei +6 more
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Spectroscopic Study of Ba and CEMP-s Stars: Mass Distribution of AGB Progenitors
The Astronomical Journal, 2023 We have performed detailed high-resolution spectroscopic analysis on seven metal-poor stars (BD+75 348, BD+09 3019, HD238020, HE0319–0215, HE0507–1653, HE0930–0018, HE1023–1504) and derived their atmospheric parameters T _eff , log g , [Fe/H], and ...
Partha Pratim Goswami, Aruna Goswami
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Stellar Properties of Observed Stars Stripped in Binaries in the Magellanic Clouds
The Astrophysical Journal, 2023 Massive stars (∼8–25 M _⊙ ) stripped of their hydrogen-rich envelopes via binary interaction are thought to be the main progenitors for merging neutron stars and stripped-envelope supernovae.
Y. Götberg +8 more
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The Astrophysical Journal, 2023 About 70%–80% of stars in our solar and Galactic neighborhood are M dwarfs. They span a range of low masses and temperatures relative to solar-type stars, facilitating molecule formation throughout their atmospheres.
Aishwarya R. Iyer +4 more
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Small Planets around Cool Dwarfs: Enhanced Formation Efficiency of Super-Earths around M Dwarfs
The Astrophysical Journal Letters, 2023 Current measurements of planet population as a function of stellar mass show three seemingly contradictory signatures: close-in super-Earths are more prevalent around M dwarfs than FGK dwarfs; inner super-Earths are correlated with outer giants; and ...
Yayaati Chachan, Eve J. Lee
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The Astronomical Journal, 2023 Since identifying the gap in the H-R Diagram (HRD) marking the transition between partially and fully-convective interiors, a unique type of slowly pulsating M dwarf has been proposed.
Wei-Chun Jao +6 more
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