SIMBAD references

2024A&A...684A.201B - Astronomy and Astrophysics, volume 684A201 (2024/4-1)

NGTS discovery of a highly inflated Saturn-mass planet and a highly irradiated hot Jupiter NGTS-26 b and NGTS-27 b.

BOUCHY F., GILLEN E., TURNER O., GILL S., NIELSEN L.D., LENDL M., VINES J.I., ALVES D.R., ANDERSON D.R., ARMSTRONG D.J., BAYLISS D., JENKINS J.S., ACTON J.S., BELARDI C., BRYANT E.M., BURLEIGH M.R., CASEWELL S.L., COSTES J.C., CHAUSHEV A., COOKE B.F., EIGMULLER P., ERIKSON A., GUNTHER M.N., GOAD M.R., GRIEVES N., McCORMAC J., MOYANO M., RAYNARD L., SMITH A.M.S., TILBROOK R.H., UDRY S., WATSON C.A., WEST R.G. and WHEATLEY P.J.

Abstract (from CDS):

We report the discovery of two new transiting giant exoplanets NGTS-26 b and NGTS-27 b by the Next Generation Transit Survey (NGTS). NGTS-26 b orbits around a G6-type main sequence star every 4.52 days. It has a mass of $0.29_{ - 0.06}^{ + 0.07}$MJup and a radius of $1.33_{ - 0.05}^{ + 0.06}$RJup making it a Saturn-mass planet with a highly inflated radius. NGTS-27 b orbits around a slightly evolved G3-type star every 3.37 days. It has a mass of $0.59_{ - 0.07}^{ + 0.10}$MJup and a radius of 1.40±0.04 RJup, making it a relatively standard hot Jupiter. The transits of these two planetary systems were re-observed and confirmed in photometry by the SAAO 1.0-m telescope, 1.2-m Euler Swiss telescope as well as the TESS spacecraft, and their masses were derived spectroscopically by the CORALIE, FEROS and HARPS spectrographs. Both giant exoplanets are highly irradiated by their host stars and present an anomalously inflated radius, especially NGTS-26 b which is one of the largest objects among peers of similar mass.

Abstract Copyright: © The Authors 2024

Journal keyword(s): techniques: photometric - planets and satellites: detection - planets and satellites: individual: NGTS-26 b - planets and satellites: individual: NGTS-27 b - planetary systems

VizieR on-line data: <Available at CDS (J/A+A/684/A201): table1.dat table3.dat>

Simbad objects: 19

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