J/AJ/162/263 TESS nearby planetary companions to hot Jupiters (Hord+, 2021)
A uniform search for nearby planetary companions to hot Jupiters in TESS data
reveals hot Jupiters are still lonely.
Hord B.J., Colon K.D., Kostov V., Galgano B., Ricker G.R., Vanderspek R.,
Seager S., Winn J.N., Jenkins J.M., Barclay T., Caldwell D.A., Essack Z.,
Fausnaugh M., Guerrero N.M., Wohler B.
<Astron. J., 162, 263-263 (2021)>
=2021AJ....162..263H 2021AJ....162..263H (SIMBAD/NED BibCode)
ADC_Keywords: Exoplanets; Stars, dwarfs; Optical
Keywords: Hot Jupiters; Transit photometry; Astronomy data analysis
Exoplanet systems
Abstract:
We present the results of a uniform search for additional planets
around all stars with confirmed hot Jupiters observed by the
Transiting Exoplanet Survey Satellite (TESS) in its Cycle 1 survey of
the southern ecliptic hemisphere. Our search comprises 184 total
planetary systems with confirmed hot Jupiters with Rp>8R⊕ and
orbital period <10days. The Transit Least Squares algorithm was
utilized to search for periodic signals that may have been missed by
other planet search pipelines. While we recovered 169 of these
confirmed hot Jupiters, our search yielded no new statistically
validated planetary candidates in the parameter space searched
(P<14days). A lack of planet candidates nearby hot Jupiters in the
TESS data supports results from previous transit searches of each
individual system, now down to the photometric precision of TESS. This
is consistent with expectations from a high-eccentricity migration
formation scenario, but additional formation indicators are needed for
definitive confirmation. We injected transit signals into the light
curves of the hot Jupiter sample to probe the pipeline's sensitivity
to the target parameter space, finding a dependence proportional to
Rp2.32P-0.88 for planets within 0.3≲Rp≲4R⊕ and
1≲P≲14days. A statistical analysis accounting for this sensitivity
provides a median and 90% confidence interval of 7.3-7.3+15.2% for
the rate of hot Jupiters with nearby companions in this target
parameter space. This study demonstrates how TESS uniquely enables
comprehensive searches for nearby planetary companions to nearly all
the known hot Jupiters.
Description:
In this paper, we present the results of an independent, uniform
search for companions to Hot Jupiters (HJs) in Transiting Exoplanet
Survey Satellite (TESS) southern ecliptic hemisphere data (Sectors
1-13).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 142 169 Best fit parameters from exoplanet simulations
for all of the 169 detected HJs contained in
our dataset
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See also:
IV/34 : K2 Ecliptic Plane Input Catalog (EPIC) (Huber+, 2017)
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
IV/38 : TESS Input Catalog - v8.0 (TIC-8) (Stassun+, 2019)
J/AJ/147/119 : Catalog of sources in Kepler field of view (Coughlin+, 2014)
J/ApJ/785/126 : HIRES radial velocity measurements (Knutson+, 2014)
J/AJ/156/18 : APOGEE DR14:Binary comp. of evolved stars (Price-Whelan+, 2018)
J/AJ/157/124 : DAVE. I. Benchmarking K2 vetting tools (Kostov+, 2019)
J/ApJS/244/11 : Planet candidates and EBs in K2 campaigns 0-8 (Kruse+, 2019)
J/AcA/70/181 : Search for Planets in Hot Jupiter Systems (Maciejewski+, 2020)
J/ApJS/254/39 : Exoplanet candidates from TESS first 2yr obs (Guerrero+, 2021)
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 9 I9 --- TIC TESS Input Catalog identifier
11- 20 A10 --- Name Common name
22- 31 F10.5 d BJD [1325/1660] Mid-transit Barycentric Julian Date,
BJD-2457000
33- 40 E8.2 d e_BJD [0.00005/0.02] Uncertainty in t0
42- 48 F7.5 d Per [0.78/9.63] Period
50- 57 E8.2 d e_Per [0/1.02] Uncertainty in Per
59- 63 I5 ppm Depth [2232/56275] Transit depth (1)
65- 69 I5 ppm e_Depth [36/14502] Uncertainty in Depth
71- 77 F7.5 d Dur [0.02/0.3] Transit duration
79- 86 E8.2 d e_Dur [0.00009/0.04] Uncertainty in Duration
88- 92 F5.3 Rjup Rad [0.83/2.95] Radius (2)
94- 99 F6.3 Rjup e_Rad [0.04/0.7]? Uncertainty in Rad (3)
101-107 F7.5 --- RpRs [0.04/0.24] Planet to stellar radii ratio
109-115 F7.5 --- e_RpRs [0.0001/0.04] Uncertainty in RpRs
117-121 F5.3 --- b [0.07/0.94] Impact parameter
123-127 F5.3 --- e_b [0.01/0.4] Uncertainty in b
129-132 F4.2 --- e [0.15/0.73]? Eccentricity (4)
134-137 F4.2 --- E_e [0.1/0.4]? Upper uncertainty in e (3)
139-142 F4.2 --- e_e [0.1/0.4]? Lower uncertainty in e (3)
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Note (1): Transit depth values are calculated based off of the sampled Rp/R*.
Note (2): Planet radii are calculated based off the sampled Rp/R* and the
stellar radius and errors in the TIC.
Note (3): Values left blank were NaN due to missing or unconstrained values
in the TIC and ExoFOP.
Note (4): Eccentricity is calculated from stellar density based on the
method outlined in Dawson & Johnson, 2012ApJ...756..122D 2012ApJ...756..122D. Some values
for stellar radius and stellar density were taken from ExoFOP
user-uploaded values if they were not available in the TIC. ExoFOP
values were uploaded by Jason Eastman from global fits using EXOFAST
(Eastman+, 2013PASP..125...83E 2013PASP..125...83E).
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History:
From electronic version of the journal
(End) Prepared by [AAS], Coralie Fix [CDS], 22-Feb-2022