J/AJ/157/141 Radial velocity and light curves of WASP-190 (Temple+, 2019)
WASP-190b: tomographic discovery of a transiting hot Jupiter.
Temple L.Y., Hellier C., Almleaky Y., Anderson D.R., Bouchy F.,
Brown D.J.A., Burdanov A., Cameron A.C., Delrez L., Gillon M., Jehin E.,
Lendl M., Maxted P.F.L., Murray C., Nielsen L.D., Pepe F., Pollacco D.,
Queloz D., Segransan D., Smalley B., Thompson S., Triaud A.H.M.J.,
Turner O.D., Udry S., West R.G.
<Astron. J., 157, 141-141 (2019)>
=2019AJ....157..141T 2019AJ....157..141T (SIMBAD/NED BibCode)
ADC_Keywords: Stars, F-type ; Radial velocities ; Photometry ; Exoplanets
Keywords: planets and satellites: detection -
planets and satellites: individual (WASP-190b) -
stars: individual (WASP-190)
Abstract:
We report the discovery of WASP-190b, an exoplanet on a 5.37 day orbit
around a mildly evolved F6 IV-V star with V=11.7, Teff=6400±100 K,
M*=1.35±0.05 M☉, and R*=1.6±0.1 R☉. The planet has
a radius of RP=1.15±0.09 RJup and a mass of MP=1.0±0.1 MJup,
making it a mildly inflated hot Jupiter. It is the first hot Jupiter
confirmed via Doppler tomography with an orbital period of >5 days. The
orbit is also marginally misaligned with respect to the stellar rotation,
with λ=21°±6° measured using Doppler tomography.
Description:
We observed WASP-190 using the WASP-South telescope (Hellier et al.
2011EPJWC..1101004H 2011EPJWC..1101004H) at the South African Astronomical Observatory (SAAO)
from 2006 to 2011. After the detection of a planet-like transit dip in
the WASP light curve we confirmed the transit with a follow-up light
curve obtained using the TRAPPIST-South telescope (Jehin et al.
2011Msngr.145....2J 2011Msngr.145....2J), and proceeded to obtain reconnaissance spectroscopy
with the Euler/CORALIE spectrograph (Queloz et al. 2001Msngr.105....1Q 2001Msngr.105....1Q).
These were sufficient to rule out a stellar-mass binary, but, with
relatively large errors, were consistent with no motion at the level
of 250 m/s, and were inconclusive in finding whether or not the transiting
body was a planet. We thus attempted tomography of a transit, obtaining
a series of 28 spectra through transit on the night of 2017 October 13
using the European Southern Observatory (ESO) 3.6 m/HARPS spectrograph
(Pepe et al. 2002Msngr.110....9P 2002Msngr.110....9P), accompanied by simultaneous photometry
using the SPECULOOS-Europa telescope (Burdanov et al. 2018haex.bookE.130B 2018haex.bookE.130B;
Delrez et al. 2018SPIE10700E..1ID; Gillon 2018NatAs...2..344G 2018NatAs...2..344G). After
tomographic detection of a planet-like signal, we obtained five further
orbital RVs with HARPS to constrain the planetary mass.
Objects:
------------------------------------------------------
RA (ICRS) DE Designation(s)
------------------------------------------------------
00 30 50.24 -40 34 24.3 WASP-190 = TYC 7528-890-1
------------------------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table2.dat 35 39 RV measurements of WASP-190
fig1a.dat 36 743 2014 TRAPPIST-South light curve
fig1b.dat 36 1382 2017 SPECULOOS-Europa light curve
--------------------------------------------------------------------------------
See also:
J/MNRAS/426/739 : Velocities for seven transiting hot Jupiters (Hellier+, 2012)
J/A+A/591/A55 : Five transiting hot Jupiters discovered using WASP
(Maxted+, 2016)
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 A2 --- Subset Subset (1)
4- 14 F11.6 d BJD [6871.794771/8399.54235] Barycentric Julian Date
at TDB (BJD-2450000)
16- 19 F4.2 km/s RV [0.73/0.95] Radial velocity
21- 24 F4.2 km/s e_RV [0.01/0.07] Uncertainty in RV
26- 30 F5.2 km/s BS [-0.24/0.15] Bisector span
32- 35 F4.2 km/s e_BS [0.02/0.14] Uncertainty in BS
--------------------------------------------------------------------------------
Note (1): RV subset as follows:
C = CORALIE (out of transit);
H1 = HARPS (including a transit);
H2 = HARPS (out of transit).
--------------------------------------------------------------------------------
Byte-by-byte Description of file: fig1a.dat fig1b.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 F11.6 d BJD [6988.55/8040.82] Barycentric Julian Date at TDB
(BJD-2450000)
13- 24 F12.9 mag omag [-0.0163608/0.0187498] Magnitude
26- 36 F11.9 mag e_omag [0.00173053/0.00510657] Uncertainty in omag
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) Prepared by [AAS], Tiphaine Pouvreau [CDS] 08-Jul-2019