J/AJ/156/216 Differential photometry & RVs of HATS-59 (Sarkis+, 2018)
HATS-59b,c: a transiting hot Jupiter and a cold massive giant planet around
a Sun-like star.
Sarkis P., Henning T., Hartman J.D., Bakos G.A., Brahm R., Jordan A.,
Bayliss D., Mancini L., Espinoza N., Rabus M., Csubry Z., Bhatti W.,
Penev K., Zhou G., Bento J., Tan T.G., Arriagada P., Butler R.P.,
Crane J.D., Shectman S., Tinney C.G., Wright D.J., Addison B., Durkan S.,
Suc V., Buchhave L.A., de Val-Borro M., Lazar J., Papp I., Sari P.
<Astron. J., 156, 216 (2018)>
=2018AJ....156..216S 2018AJ....156..216S (SIMBAD/NED BibCode)
ADC_Keywords: Photometry, ugriz ; Spectroscopy ; Radial velocities ; Exoplanets
Keywords: photometric - planetary systems - stars: individual (HATS-59) -
techniques: spectroscopic
Abstract:
We report the first discovery of a multi-planetary system by the HATSouth
network, HATS-59b,c, a planetary system with an inner transiting hot
Jupiter and an outer cold massive giant planet, which was detected via
radial velocity. The inner transiting planet, HATS-59b, is on an eccentric
orbit with e=0.129±0.049, orbiting a V=13.951±0.030 mag solar-like star
(M*=1.038±0.039 M☉ and R*=1.036±0.067 R☉) with a period
of 5.416081±0.000016 days. The outer companion, HATS-59c is on a circular
orbit with msini=12.70±0.87 MJ and a period of 1422±14 days. The
inner planet has a mass of 0.806±0.069 MJ and a radius of
1.126±0.077 RJ, yielding a density of 0.70±0.16 g/cm3. Unlike most
planetary systems that include only a single hot Jupiter, HATS-59b,c
includes, in addition to the transiting hot Jupiter, a massive outer
companion. The architecture of this system is valuable for understanding
planet migration.
Description:
The HATS-59 system was identified by the HATSouth instruments as
potentially hosting a transiting planet. The star was observed between
UT 2010 January 19 and UT 2010 August 10 using the HS-1, HS-3, and HS-5
units at the Las Campanas Observatory (LCO) in Chile, the H.E.S.S. site
in Namibia, and the Siding Springs Observatory (SSO) in Australia,
respectively. A total of 3113, 4690 and 658 of useful images were obtained
with the HS-1, HS-3, and HS-5 telescopes, respectively, using the Sloan
r filter with an exposure time of 240 s. An ingress was observed with
the 0.3 m Perth Exoplanet Telescope (PEST) on 2013 March 3, using the
RC filter. The photometric precision of the light curve was 5.0 mmag
with a cadence of 130 s. Another ingress was observed on 2013 April 10
using the Faulkes Telescope South (FTS), which is a fully automated
telescope operated as part of the Las Cumbres Observatory Global Telescope
(LCOGT; Brown et al. 2013PASP..125.1031B 2013PASP..125.1031B). The transit was observed in the
i-band filter achieving a photometric precision of 1.6 mmag with a cadence
of 113 s. An egress was obtained on 2013 December 21 with the multiband
imager GROND (Greiner et al. 2008PASP..120..405G 2008PASP..120..405G), mounted on the 2.2 m
telescope in La Silla Observatory, using four different filters (g, r,
i, z). The light curve had a precision of 1.7 mmag in the g band, 1.0 mmag
in r, 1.1 mmag in i, and 1.1 mmag in z, with a cadence of 168 s.
HATS-59 was spectroscopically observed between 2011 April and 2016 March.
We obtained nine spectra with the CORALIE spectrograph (Queloz et al.
2001Msngr.105....1Q 2001Msngr.105....1Q) at the Euler 1.2 m telescope at La Silla. We also
obtained five spectra with the Planet Finder Spectrograph (PFS;
Crane et al. 2010SPIE.7735E..53C 2010SPIE.7735E..53C) on the Magellan Clay 6.5 m telescope
and seven spectra with CYCLOPS on the 3.9 m Anglo-Australian Telescope.
Most of the spectra used in this analysis, most importantly for the
discovery of the second outer companion, were obtained with FEROS on the
MPG 2.2 m (Kaufer & Pasquini 1998SPIE.3355..844K 1998SPIE.3355..844K) in La Silla Observatory.
Twenty-four spectra were acquired with FEROS, which is a high-resolution
echelle spectrograph (Kaufer & Pasquini 1998SPIE.3355..844K 1998SPIE.3355..844K).
Objects:
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RA (ICRS) DE Designation(s)
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11 21 17.87 -22 23 17.5 HATS-59 = GSC 06090-00133
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 50 8933 Differential photometry of HATS-59
table2.dat 52 43 Relative radial velocities and bisector span
measurements of HATS-59
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See also:
J/ApJ/757/18 : Radial velocities for 16 hot Jupiter host stars
(Albrecht+, 2012)
J/MNRAS/426/739 : Velocities for seven transiting hot Jupiters (Hellier+, 2012)
J/A+A/558/A55 : HATS-2b griz light curves (Mohler-Fischer+, 2013)
J/AJ/145/5 : Follow-up photometry of HATS-1 (Penev+, 2013)
J/AJ/146/113 : Differential griz photometry of HATS-3 (Bayliss+, 2013)
J/AJ/147/144 : Differential griz photometry of HATS-5 (Zhou+, 2014)
J/AJ/148/29 : Spectroscopy and differential photometry of HATS-4
(Jordan+, 2014)
J/A+A/580/A63 : HATS-13b and HATS-14b light and RV curves (Mancini+, 2015)
J/AJ/149/166 : Photometry and spectroscopy of HATS-6 (Hartman+, 2015)
J/AJ/150/33 : Photometry and spectroscopy of HATS-9 and HATS-10
(Brahm+, 2015)
J/AJ/150/49 : Photometry and spectroscopy of HATS-8 (Bayliss+, 2015)
J/ApJ/813/111 : Differential photometry of the K dwarf HATS-7 (Bakos+, 2015)
J/AJ/151/89 : Spectroscopy and photometry of HATS-17 (Brahm+, 2016)
J/AJ/152/88 : Spectroscopy and photometry of HATS-11 and HATS-12
(Rabus+, 2016)
J/AJ/152/108 : i filter photometry for HATS-25 through HATS-30
(Espinoza+, 2016)
J/AJ/152/127 : Sloan i follow-up light curves of HATS-18 (Penev+, 2016)
J/AJ/152/161 : Photometry for HATS-31 through HATS-35 (de Val-Borro+, 2016)
J/AJ/155/112 : Radial velocities + light curves for HATS-43-HATS-46
(Brahm+, 2018)
J/A+A/622/A81 : 15 hot Jupiter exoplanets light curves (Mallonn+, 2019)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 11 F11.5 d BJD [55216.1/56647.9] Barycentric Julian Date of
observation (BJD-2400000)
13- 20 F8.5 mag mag [-0.05664/0.04828] Magnitude in Filter (1)
22- 28 F7.5 mag e_mag [0.00095/0.02387] Uncertainty in mag
30- 37 F8.5 mag Omag [-0.0026/13.6988]? Raw magnitude in Filter (2)
39- 40 A2 --- Filter [griz Rc] Filter used in the observation
42- 50 A9 --- Inst Instrument used
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Note (1): The out-of-transit level has been subtracted. For the HATSouth light
curve (rows with "HS" in the "Inst" column), these magnitudes have been
detrended using the External Parameter Decorrelation (EPD) and Trend Filtering
Algorithm (TFA) procedures prior to fitting a transit model to the light
curve. The magnitudes of the follow-up light curves (rows with an Instrument
other than "HS") have been detrended with the EPD procedure, which was carried
out simultaneously with the transit fit.
Note (2): Raw magnitude values for the follow-up light curve without applying
the EPD procedure.
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 10 F10.5 d BJD [5722.48/7464.74] Barycentric Julian Date of
observation (BJD-2450000)
12- 18 F7.2 m/s RV [-296.25/318.14] Radial velocity (1)
20- 25 F6.2 m/s e_RV [4.86/177] Uncertainty in RV (2)
27- 32 F6.1 m/s BS [-177/237]? Bisector span
34- 38 F5.1 m/s e_BS [22/138]? Uncertainty in BS
40- 44 F5.3 --- Phase [0.063/0.999] Phase
46- 52 A7 --- Inst Instrument used
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Note (1): Relative RVs, with γRV subtracted.
Note (2): Internal errors not accounting for astrophysical/instrumental jitter.
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History:
From electronic version of the journal
(End) Prepared by [AAS], Tiphaine Pouvreau [CDS] 02-Apr-2019