搜索结果: 1-15 共查到“天文学 extrasolar”相关记录17条 . 查询时间(0.054 秒)
Exploring a Frozen Extrasolar World
Frozen Extrasolar World
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2016/7/15
A video about the discovery and study of WISE 0855 (rendered using the American Museum of Natural History's Digital Universe) is available at:https://www.youtube.com/watch?v=qT3pvWleFoU.As the Juno mi...
Evidence for enhanced chromospheric Ca II H & K emission in stars with close-in extrasolar planets
Planets and satellites magnetic fields Planet star interactions chromospheres
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2012/2/23
The planet-star interaction is manifested in many ways. It was found out that a close-in exoplanet causes small but measurable variability in the cores of a few lines in the spectra of several stars w...
An aluminum/calcium-rich, iron-poor, white dwarf star: evidence for an extrasolar planetary lithosphere?
calcium-rich iron-poor evidence extrasolar planetary lithosphere
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2011/10/8
The presence of elements heavier than helium in white dwarf atmospheres is often a signpost for the existence of rocky objects that currently or previously orbited these stars. We have measured the ab...
A natural formation scenario for misaligned and short-period eccentric extrasolar planets
open clusters and associations: general — planets and satellites: for- mation — planetary systems: protoplanetary disks — planetary systems: planet-disc interactions — planetary systems: planet-star interactions — physical data: hydrodynamics
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2011/10/8
Recent discoveries of strongly misaligned transiting exoplanets pose a challenge to the established planet formation theory which assumes planetary systems to form and evolve in isolation. However, th...
The HARPS search for southern extrasolar planets. XXV. Four new planets in orbit around the moderatly active dwarfs HD 63765, HD 104067, HD 125595, and HIP 70849
Techniques: radial velocities – Methods: data analysis – genetic algorithm Stars: individual:HD 104067 HD 125595 HIP 70849
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2011/9/27
We report the detection of four new extrasolar planets in orbit around the moderately active stars HD 63765, HD 104067, HIP 70849, and HD 125595 with the HARPS Echelle spectrograph mounted on the ESO ...
The HARPS search for southern extrasolar planets XXV. Results from the metal-poor sample
planets and satellites formation – Stars abundances – planetary systems – Techniques spectroscopic – Techniques
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2010/11/12
Searching for extrasolar planets around stars of different metallicity may provide strong constraints to the models of planet formation and evolution. In this paper we present the overall results of a...
Ionisation in atmospheres of Brown Dwarfs and extrasolar planets I The role of electron avalanche
Brown Dwarfs extrasolar planets
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2011/1/10
Brown Dwarf and extrasolar planet atmospheres form clouds which strongly influence the local chemistry and physics. These clouds are globally neutral obeying dust-gas charge equilibrium which is, on s...
Extreme Climate Variations from Milankovitch-like Eccentricity Oscillations in Extrasolar Planetary Systems
Earth and Planetary Astrophysics (astro-ph.EP)
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2010/12/28
Although our solar system features predominantly circular orbits, the exoplanets discovered so far indicate that this is the exception rather than the rule.
Images of extrasolar planets win award for most outstanding papers in Science（图）
extrasolar planets Science
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2010/3/4
A picture is worth a thousand words, or so University of California, Berkeley, astronomer Paul Kalas found out when he published a Hubble Space Telescope image of a Jupiter-sized planet orbiting the s...
An All-Sky Extrasolar Planet Survey with Multiple Object, Dispersed Fixed-delay Interferometers
Planet Survey Multiple Object Fixed-delay Interferometers
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2009/7/1
An All-Sky Extrasolar Planet Survey with Multiple Object, Dispersed Fixed-delay Interferometers。
An All Sky Extrasolar Planet Survey with new generation multiple object Doppler instruments at Sloan telescope
Sky Extrasolar Planet Doppler instruments Sloan telescope
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2009/6/30
An All Sky Extrasolar Planet Survey with new generation multiple object Doppler instruments at Sloan telescope。
Prospects for brown dwarf and extrasolar planet research with the GTC and the LMT
extrasolar planet the GTC the LMT
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2009/6/25
Prospects for brown dwarf and extrasolar planet research with the GTC and the LMT。
The possible belts for extrasolar planetary systems
possible belts extrasolar planetary systems
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2009/6/17
The possible belts for extrasolar planetary systems。
Extrasolar planets：theory and observations
Extrasolar planets observations
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2009/6/10
Extrasolar planets：theory and observations。
Does Si Play a Role in the Formation of Extrasolar Planet Systems?
Planetary systems formation—stars abundances—stars late-type
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2009/5/12
With the high signal-to-noise ratio spectra, we obtained Si
abundances of 22 extrasolar planet host stars, and discussed some constraints
on the planet formation. Using our silicon abundance results...