J/A+A/684/A201 Photometric data of NGTS-26 and NGTS-27 (Bouchy+, 2024)
NGTS discovery of a highly inflated Saturn-mass planet and a highly irradiated
hot Jupiter. NGTS-26 b & 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., Eigmueller P.,
Erikson A., Guenther 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.,
Wheatley P.J.
<Astron. Astrophys. 684, A201 (2024)>
=2024A&A...684A.201B 2024A&A...684A.201B (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Exoplanets ; Photometry ;
Optical
Keywords: techniques: photometric - planets and satellites: detection -
planets and satellites: individual: NGTS-26 b -
planets and satellites: individual: NGTS-27 b - planetary systems
Abstract:
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+0.07-0.06Mjup and a radius of 1.33+0.06-0.05Rjup
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+0.10-0.07Mjup and a radius of 1.40±0.04Rjup,
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.
Description:
Renormalised photometric data of NGTS-26 and NGTS-27 obtained with
NGTS, TESS, Euler and SAAO.
Objects:
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RA (2000) DE Designation(s)
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14 30 43.99 -31 43 56.83 NGTS-26 = 2MASS J14304401-3143566
13 44 06.37 -32 31 22.71 NGTS-27 = 2MASS J13440638-3231227
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 42 249658 Renormalised photometric data of NGTS-26
and NGTS-27 from NGTS
table3.dat 54 10325 Renormalised photometric data of NGTS-26
and NGTS-27 from EulerCam, SAAO, and TESS
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 18 F18.13 d Date Julian date (TDB) (JD-2450000)
20- 26 F7.5 --- Flux Renormalised flux
28- 34 F7.5 --- e_Flux Flux error
36- 42 A7 --- Object Object Name
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 17 F17.12 d Date Julian date (TDB) (JD-2450000)
19- 26 F8.6 --- Flux Renormalised flux
28- 35 F8.6 --- e_Flux Flux error
37- 41 A5 --- Inst Instrument name
43- 46 A4 --- Filter Filter used
48- 54 A7 --- Object Object name
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Acknowledgements:
Francois Bouchy, francois.bouchy(at)unige.ch
(End) Patricia Vannier [CDS] 06-Feb-2024