An Improved Transit Measurement for a 2.4[subscript ⊕] Planet Orbiting A Bright Mid-M Dwarf K2–28

We present a new Spitzer transit observation of K2-28b, a sub-Neptune (R[subscript p] = 2.45 ± 0.28 R[subscript ⊕]) orbiting a relatively bright (V[subscript mag] = 16.06, K[subscript mag] = 10.75) metal-rich M4 dwarf (EPIC 206318379). This star is one of only seven with masses less than 0.2 known t...

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Bibliographic Details
Main Authors: Chen, Ge, Knutson, Heather A., Dressing, Courtney D., Morley, Caroline V., Werner, Michael, Gorjian, Varoujan, Beichman, Charles, Benneke, Björn, Christiansen, Jessie L., Ciardi, David, Crossfield, Ian, Howell, Steve B., Krick, Jessica E., Livingston, John, Morales, Farisa Y., Schlieder, Joshua E.
Other Authors: Massachusetts Institute of Technology. Department of Physics
Format: Article
Published: American Astronomical Society 2019
Online Access:https://hdl.handle.net/1721.1/121250