Questions tagged [starspot]
The starspot tag has no usage guidance.
6
questions
7
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answer
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Do brown dwarfs have starspots?
Do lithium-burning brown dwarfs (65+ Jupiter masses) have starspots too or do they occur only on hydrogen-burning stars?
2
votes
1
answer
147
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How would one estimate the rotation period of a star from its spectrum?
The figure is shown; the measurements were taken on two consecutive observing nights. The Ordinate is the flux normalized to continuum and the abscissa is the wavelength scale. You can see the "...
10
votes
1
answer
389
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Can New Horizons be used to measure the distance to Betelgeuse (despite its fickle photocenter)?
The New Horizons spacecraft is almost 50 AU from Earth and near-simultaneous images taken by its telescope and one on Earth have demonstrated parallax without relying on the movement of Earth in it's ...
6
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3
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Can we see evidence of sunspots on other stars? (starspots)
Searching for exoplanets by measuring the change of a stars brightness when an exoplanet transits the star's disk also has the potential to detect exo-sunspots (starspots). Have they ever been ...
6
votes
1
answer
102
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Activity of M dwarf stars
Why are M dwarf stars the most active (in terms of starspots and faculae) of all stars?
6
votes
1
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Why can't the surfaces of stars be observed?
If I'm correctly informed, only three stars: Sol, Betelgeuse and Altair have surfaces which have been resolved by telescopes. All other stars are only point sources of light, even in the greatest of ...