Science

Exoplanet Bonanza: 172 New Planetary Candidates Found – Including Some Truly Bizarre Planetary Systems

Exoplanet Bonanza: 172 New Planetary Candidates Found – Including Some Truly Bizarre Planetary Systems

Exoplanet Bonanza

Credit: Caltech

Modern planetary candidates came upon by sifting by archival Kepler Telescope files.

A actually automated “There used to be a vary of unexplored territory in these NASA Kepler archival files, so we labored collectively to construct a novel intention pipeline that could perchance uniformly rate by the final four years of observations,” says Jessie Christiansen, lead scientist for the NASA Exoplanet Archive at Caltech’s IPAC astronomy middle and co-author of a novel take a look at reporting the findings in The Tall Journal. “These efforts incorporated increasing a novel instrument for gleaning the astrophysical signals from instrumental signals, which had plagued many outdated analyses.” The lead author of the take a look at is Jon Zink, a Sagan Postdoctoral Pupil Compare Partner in Astronomy at Caltech, who performed the examine while a graduate pupil at UCLA.

The Kepler Build Telescope, which used to be shut down in 2018 after running dry of gasoline, explored the galaxy for nine years and came upon hundreds of exoplanets. Extra than 2,800 had been confirmed, and extra than 3,250 candidate planets pause wide awake for confirmation, along side the latest batch of 172 candidates. A lot of of these candidates had been detected for the period of Kepler’s 2nd mission, is called K2, after mechanical failure ended the first mission and sharply restricted watching functionality for the 2nd.

The novel catalog, drawn from Kepler’s K2 observations, entails some with out a doubt weird planets and planetary programs. In one intention, known as EPIC 249559552, two “mini Neptunes” are locked in a gravitational dance, with the inner planet making 5 orbits for every two by the outer planet. In yet another intention, known as EPIC 249731291, two planets a minute bit smaller than The novel exoplanet catalog used to be compiled by a team of astronomers from several institutions. A quantity of Caltech-affiliated authors encompass Kevin Hardegree-Ullman, a light Caltech postdoc now on the College of Arizona, and volunteer researcher Sakhee Bhure.

“With a mountainous, uniformly generated catalog love this one, we can commence performing population examine into how standard varied forms of planets and planetary programs are,” says Christiansen.

Reference: “Scaling K2. IV. A Uniform Planet Pattern for Campaigns 1–8 and 10–18” by Jon K. Zink, Kevin K. Hardegree-Ullman, Jessie L. Christiansen, Sakhee Bhure, Britt Duffy Adkins, Erik A. Petigura, Courtney D. Dressing, Ian J. M. Crossfield and Joshua E. Schlieder, 23 November 2021, The Tall Journal.


DOI: 10.3847/1538-3881/ac2309