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stars: solar-type

Zeeman doppler imaging of the surface activity and magnetic fields of young solar-type stars

Zeeman doppler imaging of the surface activity and magnetic fields of young solar-type stars

... young solar-type stars with the rapid rotation (normally v sini > 20 km/s) needed for spot mapping, and exhibiting definite magnetic field detections (see for example Waite et ...planet-hosting ...

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A BCool survey of the magnetic fields of planet-hosting solar-type stars

A BCool survey of the magnetic fields of planet-hosting solar-type stars

... Table 1. Planetary parameters of the sample of planet-hosting solar-type stars not previously observed by Marsden et al. (2014). The stellar component’s Hipparcos number, SPOCS catalogue number and ...

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A Bcool magnetic snapshot survey of solar-type stars

A Bcool magnetic snapshot survey of solar-type stars

... of solar- type stars: (1) a snapshot survey of a large number of solar-type stars, in order to determine the number of stars showing detectable magnetic fields and how the ...

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A BCool magnetic snapshot survey of solar type stars

A BCool magnetic snapshot survey of solar type stars

... 9.0) solar-type stars as possible to further our understanding of the magnetic activity of cool ...170 solar- type stars that we have observed starting in 2006 until 2013 as part ...

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A Bcool survey of the magnetic fields of planet hosting solar type stars

A Bcool survey of the magnetic fields of planet hosting solar type stars

... 170 solar-type ...host stars has an effect on the host star’s magnetic field, we show that such an effect is too subtle to detect in our ...planet-hosting solar-type stars may ...

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Observations of non-solar-type dynamo processes in stars with shallow convective zones

Observations of non-solar-type dynamo processes in stars with shallow convective zones

... late-type stars such as AB Dor (Donati et ...convective stars AD Leo, EV Lac, YZ Cmi and EQ Peg A (Morin et ...these stars, which is supported by theoretical models of dynamo action in rapidly ...

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The evolution of surface magnetic fields in young
solar-type stars I: the first 250 Myr

The evolution of surface magnetic fields in young solar-type stars I: the first 250 Myr

... 15 solar-type stars close the ZAMS, with ages ranging from 20 to 250 ...The stars have a range of complex magnetic ge- ometries, with global average strengths from 14 to 140 ...MS stars ...

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Doppler imaging of young solar-type stars using the ANU 2.3 m Siding Spring Telescope

Doppler imaging of young solar-type stars using the ANU 2.3 m Siding Spring Telescope

... young solar-type stars provides an opportu- nity to improve understanding of stellar dynamos and indirectly gain insight into early solar ...

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Statistical properties of superflares on solar type stars based on 1 min cadence data

Statistical properties of superflares on solar type stars based on 1 min cadence data

... largest solar flares, called the Carrington flare (Carrington 1859), caused the largest geomagnetic storm in the past 200 years (Tsurutani et ...the solar flares which release up to 10 32 erg of energy can ...

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Magnetic fields on young, solar-type stars

Magnetic fields on young, solar-type stars

... other solar-type stars, with the toroidal field being the dominant field of HD 171488 (Marsden et ...young, solar-type ...where stars with significant toroidal fields often have ...

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Magnetic fields on young, solar-type stars

Magnetic fields on young, solar-type stars

... young solar-type stars to improve the understanding of the early development of solar and stellar dynamos and activity ...young stars (and activity effects on any attendant emerging ...

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Planet occurrence within 0.25AU of solar-type stars from Kepler

Planet occurrence within 0.25AU of solar-type stars from Kepler

... Figure 2 shows that the early KOIs, 1–1050, had a wide range of SNR values spanning 7–1000, as the first transit signals had a variety of depths. KOIs 400–1000 correspond to pipeline detections of transit planet ...

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WASP 20b and WASP 28b : a hot Saturn and a hot Jupiter in near aligned orbits around solar type stars

WASP 20b and WASP 28b : a hot Saturn and a hot Jupiter in near aligned orbits around solar type stars

... We find both WASP-20b and WASP-28b to be in prograde orbits. The orbit of WASP-20b may be slightly misaligned with its star’s spin: λ = 12.7 ± 4.2 ◦ . Although our measurement for WASP-28b (λ = 8 ± 18 ◦ ) is consistent ...

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Doppler imaging of young solar-type stars using the ANU 2.3 m Siding Spring Telescope

Doppler imaging of young solar-type stars using the ANU 2.3 m Siding Spring Telescope

... young stars provides for a comparison with the predictions of stellar dynamo ...young stars show evidence of a polar spot as well as detectable lower latitude ...

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The effects of stellar winds on the magnetospheres and potential habitability of exoplanets

The effects of stellar winds on the magnetospheres and potential habitability of exoplanets

... mass stars remain magnetically active, it seems unlikely that an orbiting Earth- analogue could hold onto its ...around solar-type stars seem to be much more at- tractive targets for ...

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1-10 Myr-old Low Mass Stars and Brown Dwarfs in Nearby Star Forming Regions

1-10 Myr-old Low Mass Stars and Brown Dwarfs in Nearby Star Forming Regions

... to solar-type pre-main sequence stars may cause differences in the evolution of accretion, disk composition and grain ...mass stars to form planetary ...200 stars ranging from ∼ 20 to ...

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The effects of stellar winds on the magnetospheres and potential habitability of exoplanets

The effects of stellar winds on the magnetospheres and potential habitability of exoplanets

... 167 stars observed by the Bcool Collaboration (Marsden et ...any stars that did not have all the data required for our wind ...124 solar-type stars, mostly with masses be- tween ...

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Building Positive Future Orientations: The Role of Natural Mentors in the Lives of African American Girls

Building Positive Future Orientations: The Role of Natural Mentors in the Lives of African American Girls

... (roughly solar-mass and lower) in star forming regions (SFR) yielded significantly higher percentages, suggesting that pre-main-sequence (PMS) stars have a much higher fraction of binaries than nearby ...

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Rotation and stellar evolution

Rotation and stellar evolution

... of stars can bring valuable constraints to the modelling of angular momentum transport in stellar ...young solar-type stars in open clusters, observations of rotational periods indicate that ...

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The EBLM Project  V  Physical properties of ten fully convective, very low mass stars

The EBLM Project V Physical properties of ten fully convective, very low mass stars

... host stars. We use eclipse observations of the host stars, performed with the TRAPPIST, Leonhard Euler and SPECULOOS telescopes, and radial velocities of the host stars obtained with the CORALIE ...

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