Search Results - "See, Victor"
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Photometric Variability as a Proxy for Magnetic Activity and Its Dependence on Metallicity
Published in The Astrophysical journal (01-05-2021)“…Abstract Understanding how the magnetic activity of low-mass stars depends on their fundamental parameters is an important goal of stellar astrophysics…”
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The Effect of Magnetic Variability on Stellar Angular Momentum Loss. I. The Solar Wind Torque during Sunspot Cycles 23 and 24
Published in The Astrophysical journal (10-09-2018)“…The rotational evolution of cool stars is governed by magnetized stellar winds that slow the stellar rotation during their main sequence lifetimes. Magnetic…”
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3
Prominence formation and ejection in cool stars
Published in Monthly notices of the Royal Astronomical Society. Letters (01-03-2018)“…Abstract The observational signatures of prominences have been detected in single and binary G and K type stars for many years now, but recently this has been…”
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4
Do Non-dipolar Magnetic Fields Contribute to Spin-down Torques?
Published in The Astrophysical journal (01-12-2019)“…Main-sequence low-mass stars are known to spin down as a consequence of their magnetized stellar winds. However, estimating the precise rate of this spin-down…”
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Alfvén-wave-driven Magnetic Rotator Winds from Low-mass Stars. I. Rotation Dependences of Magnetic Braking and Mass-loss Rate
Published in The Astrophysical journal (01-06-2020)“…Observations of stellar rotation show that low-mass stars lose angular momentum during the main sequence. We simulate the winds of sunlike stars with a range…”
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6
The Origin of Weakened Magnetic Braking in Old Solar Analogs
Published in Astrophysical journal. Letters (01-07-2022)“…Abstract The rotation rates of main-sequence stars slow over time as they gradually lose angular momentum to their magnetized stellar winds. The rate of…”
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How Much Do Underestimated Field Strengths from Zeeman-Doppler Imaging Affect Spin-down Torque Estimates?
Published in The Astrophysical journal (01-05-2020)“…Numerous attempts to estimate the rate at which low-mass stars lose angular momentum over their lifetimes fill the literature. One approach is to use magnetic…”
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Estimating Magnetic Filling Factors from Zeeman-Doppler Magnetograms
Published in The Astrophysical journal (10-05-2019)“…Low-mass stars are known to have magnetic fields that are believed to be of dynamo origin. Two complementary techniques are principally used to characterize…”
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Constraints on Magnetic Braking from the G8 Dwarf Stars 61 UMa and τ Cet
Published in Astrophysical journal. Letters (01-05-2023)“…Abstract During the first half of their main-sequence lifetimes, stars rapidly lose angular momentum to their magnetized winds, a process known as magnetic…”
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10
Weakened Magnetic Braking in the Exoplanet Host Star 51 Peg
Published in Astrophysical journal. Letters (01-01-2024)“…Abstract The consistently low activity level of the old solar analog 51 Peg not only facilitated the discovery of the first hot Jupiter, but also led to the…”
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11
Asteroseismology and Spectropolarimetry of the Exoplanet Host Star λ Serpentis
Published in The Astronomical journal (01-10-2023)“…Abstract The bright star λ Ser hosts a hot Neptune with a minimum mass of 13.6 M ⊕ and a 15.5 day orbit. It also appears to be a solar analog, with a mean…”
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12
Further evidence of the link between activity and metallicity using the flaring properties of stars in the Kepler field
Published in Monthly notices of the Royal Astronomical Society (01-10-2023)“…ABSTRACT The magnetic activity level of low-mass stars is known to vary as a function of the physical properties of the star. Many studies have shown that the…”
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The impact of stellar metallicity on rotation and activity evolution in the Kepler field using gyro-kinematic ages
Published in Monthly notices of the Royal Astronomical Society (01-09-2024)“…ABSTRACT In recent years, there has been a push to understand how chemical composition affects the magnetic activity levels of main sequence low-mass stars…”
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The Effect of Magnetic Variability on Stellar Angular Momentum Loss. II. The Sun, 61 Cygni A, ϵ Eridani, Bootis A, and τ Bootis A
Published in The Astrophysical journal (01-05-2019)“…The magnetic fields of low-mass stars are observed to be variable on decadal timescales, ranging in behavior from cyclic to stochastic. The changing strength…”
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15
The Effect of Magnetic Variability on Stellar Angular Momentum Loss. II. The Sun, 61 Cygni A, ϵ Eridani, ξ Bootis A, and τ Bootis A
Published in The Astrophysical journal (01-05-2019)“…Abstract The magnetic fields of low-mass stars are observed to be variable on decadal timescales, ranging in behavior from cyclic to stochastic. The changing…”
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16
Slingshot prominence evolution for a solar-like star
Published in Monthly notices of the Royal Astronomical Society (01-05-2019)Get full text
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17
Magnetic and Rotational Evolution of ρ CrB from Asteroseismology with TESS
Published in The Astrophysical journal (01-11-2021)“…Abstract During the first half of main-sequence lifetimes, the evolution of rotation and magnetic activity in solar-type stars appears to be strongly coupled…”
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An abrupt change in the stellar spin-down law at the fully convective boundary
Published in Nature astronomy (01-02-2024)“…Unlike partially convective stars such as the Sun, fully convective stars do not possess a radiative core. Whether a star needs this core to generate a…”
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Weakened magnetic braking supported by asteroseismic rotation rates of Kepler dwarfs
Published in Nature astronomy (01-07-2021)“…Studies using asteroseismic ages and rotation rates from star-spot rotation have indicated that standard age–rotation relations may break down roughly half way…”
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Slingshot prominences: coronal structure, mass loss and spin down
Published in Monthly notices of the Royal Astronomical Society (01-12-2019)Get full text
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