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radial velocity

This tag is associated with 25 posts

A Crippled Kepler Discovers a New Planet

The Kepler Space Telescope was the workhorse of exoplanet discovery until its second reaction wheel failed, rendering it incapable of continuing its original mission. Now, Kepler is back in the game of planet hunting.

Trending Exoplanets

Are more massive stars more likely to have planets? Read on to find out…

MINERVA: MINiature Exoplanet Radial Velocity Array

MINERVA: Detecting Super-Earths from the ground in a modular, cost-effective manner.

Hide and Seek Planets

Is CoRoT-7d real, or is it stellar activity masquerading as a planet? Haywood et al. build a noise model to analyze CoRoT-7’s activity to find out.

Kepler-10c: A Huge Rocky Exoplanet

According to planet formation theory, gas giants are more massive than rocky, terrestrial planets. But Kepler-10c is the size of Neptune, and denser than the Earth! Read on to find out more about the discovery of a new class of planets.

A Planet for Every M Dwarf Star?

A recent result on the commonality of exoplanets has made headlines, but has it for the right reasons?

More hypervelocity stars are jetting out of the galaxy

Palladino et al. find 13 new hypervelocity star candidates in the galaxy and find they probably do not originate from the center of the galaxy.

Finding Serenity: Three Habitable Planets around GJ667C?

This paper reports that the M-dwarf star GJ667C is orbited by a system of six, maybe seven super-Earths, of which three are in the habitable zone. This is an extraordinarily closely packed system of planets, straight from science fiction!

Voyages through the Final Frontier: The Case of HD97658b.

This paper describes the detection of transits for a planet previously identified via radial velocities (RVs). Measuring the properties of the planet with both the transit and RV method allows the authors to determine the density, which suggests it should have a lot of volatiles (e.g. H2O, CO2, etc). This discovery is particularly exciting because the planet orbits a bright, nearby star: ideal for follow-up observations to characterize its atmosphere!

Transit Probabilities: Not As Simple As They Seem

Our simple formula for predicting the probability that an exoplanet will transit might miss something important.

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