This tag is associated with 73 posts

Can planets and stars spin in unison?

The orbits of some recently discovered exoplanets seem to be synchronised with the rotation of their host stars. Can this mystery be explained?

Linking stellar age, rotation, and magnetic activity

We have repeatedly seen how Kepler goes above and beyond its original mission of finding exoplanets. Today’s paper is no exception.

Hundreds of new planets announced

The number of confirmed planets existing outside our Solar System just doubled.

Kepler 2.0

The Kepler Space Telescope gets a promising second chance with a new mission called “K2″.

Pulsations and Evolution

Kepler finds a new binary system with a Delta Scuti pulsator.

Kepler-78b – An exoplanet with the density of Earth

The newly discovered exoplanet Kepler-78b has a size, mass, and density similar to Earth. This is the smallest exoplanet to have a measurement of both its radius and its mass.

Planet or comet?

KOI 2700b is a planet with an identity crisis: it thinks it is a comet.

The Little Star that Could (Teach us about Stellar Astrophysics)

Today we take a look back to 1916, when distances were measured in light years and uncertainties weren’t to be included in publications. The nearly 100-year old discovery of a small star has large implications for our understanding of stellar astrophysics, even today.

Something cataclysmic in the Kepler field

Cataclysmic variables are binary star systems where one of the stars—a white dwarf—devours its main sequence partner over time. Kepler proves yet again that it can find a lot more than just exoplanets by identifying a cataclysmic variable with a period of less than an hour.

Planet radius as a proxy for composition

Planetary radius is found to depend strongly on planet composition. The observed planet radius distribution can be recast as a composition distribution, with implications for the way planets form.

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