TY - JOUR
T1 - K2-138 g: Spitzer Spots a Sixth Planet for the Citizen Science System
AU - Hardegree-Ullman, Kevin K.
AU - Christiansen, Jessie L.
AU - Ciardi, David R.
AU - Crossfield, Ian J. M.
AU - Dressing, Courtney D.
AU - Livingston, John H.
AU - Volk, Kathryn
AU - Agol, Eric
AU - Barclay, Thomas
AU - Barentsen, Geert
AU - Benneke, Björn
AU - Gorjian, Varoujan
AU - Kristiansen, Martti H.
PY - 2021
Y1 - 2021
N2 - K2 greatly extended Kepler's ability to find new planets, but it was typically limited to identifying transiting planets with orbital periods below 40 days. While analyzing K2 data through the Exoplanet Explorers project, citizen scientists helped discover one super-Earth and four sub-Neptune sized planets in the relatively bright (V = 12.21, K = 10.3) K2-138 system, all which orbit near 3:2 mean-motion resonances.
AB - K2 greatly extended Kepler's ability to find new planets, but it was typically limited to identifying transiting planets with orbital periods below 40 days. While analyzing K2 data through the Exoplanet Explorers project, citizen scientists helped discover one super-Earth and four sub-Neptune sized planets in the relatively bright (V = 12.21, K = 10.3) K2-138 system, all which orbit near 3:2 mean-motion resonances.
U2 - 10.3847/1538-3881/abeab0
DO - 10.3847/1538-3881/abeab0
M3 - Journal article
SN - 0004-6256
VL - 161
JO - Astronomical Journal
JF - Astronomical Journal
IS - 5
M1 - 219
ER -