2020A&A...637A..36B

Query : 2020A&A...637A..36B

2020A&A...637A..36B - Astronomy and Astrophysics, volume 637A36-36 (2020/5-1)

Optical phase curve of the ultra-hot Jupiter WASP-121b.

BOURRIER V., KITZMANN D., KUNTZER T., NASCIMBENI V., LENDL M., LAVIE B., HOEIJMAKERS H.J., PINO L., EHRENREICH D., HENG K., ALLART R., CEGLA H.M., DUMUSQUE X., MELO C., ASTUDILLO-DEFRU N., CALDWELL D.A., CRETIGNIER M., GILES H., HENZE C.E., JENKINS J., LOVIS C., MURGAS F., PEPE F., RICKER G.R., ROSE M.E., SEAGER S., SEGRANSAN D., SUAREZ-MASCARENO A., UDRY S., VANDERSPEK R. and WYTTENBACH A.

Abstract (from CDS):

We present the analysis of TESS optical photometry of WASP-121b, which reveals the phase curve of this transiting ultra-hot Jupiter. Its hotspot is located at the sub-stellar point, showing inefficient heat transport from the dayside (2870±50K) to the nightside (<2500K at 3σ) at the altitudes probed by TESS. The TESS eclipse depth, measured at the shortest wavelength to date for WASP-121b, confirms the strong deviation from blackbody planetary emission. Our atmospheric retrieval on the complete emission spectrum supports the presence of a temperature inversion, which can be explained by the presence of VO and possibly TiO and FeH. The strong planetary emission at short wavelengths could arise from an H– continuum.

Abstract Copyright: © ESO 2020

Journal keyword(s): planetary systems - planets and satellites: individual: WASP-121b - planets and satellites: atmospheres - techniques: photometric

VizieR on-line data: <Available at CDS (J/A+A/637/A36): lccurve.dat>

Simbad objects: 6

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Number of rows : 6
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 WASP-12b Pl 06 30 32.7966092352 +29 40 20.263502460           ~ 847 1
2 CD-38 3220 * 07 10 24.0604565856 -39 05 50.571250476   11.00 10.51     F6V 145 0
3 CD-38 3220b Pl 07 10 24.0604565856 -39 05 50.571250476           ~ 421 0
4 TOI-495.02 Pl? 07 10 24.0604565856 -39 05 50.571250476           ~ 1 0
5 * tau Boo b Pl 13 47 15.7381720026 +17 27 24.809555600           ~ 312 1
6 Kepler-7b Pl 19 14 19.5623105760 +41 05 23.367379128           ~ 222 1

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