SIMBAD references

2017AJ....154..226D - Astron. J., 154, 226-226 (2017/December-4)

The discovery and mass measurement of a new ultra-short-period planet: K2-131b.

DAI F., WINN J.N., GANDOLFI D., WANG S.X., TESKE J.K., BURT J., ALBRECHT S., BARRAGAN O., COCHRAN W.D., ENDL M., FRIDLUND M., HATZES A.P., HIRANO T., HIRSCH L.A., JOHNSON M.C., JUSTESEN A.B., LIVINGSTON J., PERSSON C.M., PRIETO-ARRANZ J., VANDERBURG A., ALONSO R., ANTONICIELLO G., ARRIAGADA P., BUTLER R.P., CABRERA J., CRANE J.D., CUSANO F., CSIZMADIA S., DEEG H., DIETERICH S.B., EIGMULLER P., ERIKSON A., EVERETT M.E., FUKUI A., GRZIWA S., GUENTHER E.W., HENRY G.W., HOWELL S.B., JOHNSON J.A., KORTH J., KUZUHARA M., NARITA N., NESPRAL D., NOWAK G., PALLE E., PATZOLD M., RAUER H., MONTANES RODRIGUEZ P., SHECTMAN S.A., SMITH A.M.S., THOMPSON I.B., VAN EYLEN V., WILLIAMSON M.W. and WITTENMYER R.A.

Abstract (from CDS):

We report the discovery of a new ultra-short-period planet and summarize the properties of all such planets for which the mass and radius have been measured. The new planet, K2-131b, was discovered in K2 Campaign 10. It has a radius of 1.81–0.12+0.16 R and orbits a G dwarf with a period of 8.9 hr. Radial velocities obtained with Magellan/PFS and TNG/HARPS-N show evidence for stellar activity along with orbital motion. We determined the planetary mass using two different methods: (1) the "floating chunk offset" method, based only on changes in velocity observed on the same night; and (2) a Gaussian process regression based on both the radial velocity and photometric time series. The results are consistent and lead to a mass measurement of 6.5±1.6 M and a mean density of 6.0–2.7+3.0 g cm–3.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): planetary systems - stars: individual: EPIC 228732031 - stars: individual: EPIC 228732031

VizieR on-line data: <Available at CDS (J/AJ/154/226): table1.dat table2.dat table3.dat table4.dat>

Simbad objects: 16

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2019.09.18-03:54:33

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