J/ApJS/239/2 Simulated exoplanets from TESS list of targets (Barclay+, 2018)
A revised exoplanet yield from the Transiting Exoplanet Survey Satellite (TESS).
Barclay T., Pepper J., Quintana E.V.
<Astrophys. J. Suppl. Ser., 239, 2 (2018)>
=2018ApJS..239....2B 2018ApJS..239....2B
ADC_Keywords: Stars, double and multiple; Models; Photometry, infrared;
Stars, diameters; Stars, masses; Stars, distances
Keywords: catalogs ; methods: statistical ; planetary systems ; surveys
Abstract:
The Transiting Exoplanet Survey Satellite (TESS) has a goal of
detecting small planets orbiting stars bright enough for mass
determination via ground-based radial velocity observations. Here, we
present estimates of how many exoplanets the TESS mission will detect,
the physical properties of the detected planets, and the properties of
the stars that those planets orbit. This work uses stars drawn from
the TESS Input Catalog (TIC) Candidate Target List and revises yields
from prior studies that were based on Galactic models. We modeled the
TESS observing strategy to select approximately 200000 stars at
2-minute cadence, while the remaining stars are observed at 30-minute
cadence in full-frame image data. We placed zero or more planets in
orbit around each star, with physical properties following measured
exoplanet occurrence rates, and used the TESS noise model to predict
the derived properties of the detected exoplanets. In the TESS
2-minute cadence mode we estimate that TESS will find 1250±70
exoplanets (90% confidence), including 250 smaller than 2R⊕.
Furthermore, we predict that an additional 3100 planets will be found
in full-frame image data orbiting bright dwarf stars and more than
10000 around fainter stars. We predict that TESS will find 500 planets
orbiting M dwarfs, but the majority of planets will orbit stars larger
than the Sun. Our simulated sample of planets contains hundreds of
small planets amenable to radial velocity follow-up, potentially more
than tripling the number of planets smaller than 4R⊕ with mass
measurements. This sample of simulated planets is available for use in
planning follow-up observations and analyses.
Description:
The first step for the star selection was made relatively
straightforward by the availability of the Candidate Target List (CTL)
--a prioritized list of target stars that the TESS Target Selection
Working Group has determined represent the stars most suitable for
detection of small planets by TESS. The properties of about 500
million stars were assembled in the TIC (Stassun+ 2018AJ....156..102S 2018AJ....156..102S),
and the CTL includes several million of those stars that are most
suitable for small transit detection. We used CTL version 6.1 (The TIC
and CTL are available from the MAST archive at
http://archive.stsci.edu/tess/), which includes 3.8 million stars with
properties such as stellar radii, masses, distances, and apparent
brightness in various bandpasses.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table2.dat 256 4373 Planet and host star properties for every detected
planet in our simulation
--------------------------------------------------------------------------------
See also:
J/other/Sci/330.653 : Detected planets in the Eta-Earth Survey (Howard+, 2010)
J/A+A/549/A109 : HARPS XXXI. The M-dwarf sample (Bonfils+, 2013)
J/ApJ/767/95 : Improved parameters of smallest KIC stars (Dressing+, 2013)
J/ApJS/208/9 : Intrinsic colors and temperatures of PMS stars (Pecaut+, 2013)
J/ApJ/770/69 : Kepler planet candidates radii (Petigura+, 2013)
J/ApJ/795/64 : A catalog of exoplanet physical param. (Foreman-Mackey+, 2014)
J/ApJS/211/2 : Revised properties of Q1-16 Kepler targets (Huber+, 2014)
J/ApJ/791/10 : Radii of planets around cool stars (Morton+, 2014)
J/ApJ/809/8 : Terrestrial planet occurrence rates for KOIs (Burke+, 2015)
J/ApJ/807/45 : Potentially habitable planets around M dwarfs (Dressing+, 2015)
J/ApJ/814/130 : Planet occurrence rates calculated for KOIs (Mulders+, 2015)
J/ApJ/809/77 : Transiting Exoplanet Survey Satellite (TESS) (Sullivan+, 2015)
J/ApJ/828/99 : Kepler transit signal recovery. III. (Christiansen+, 2016)
J/ApJS/226/7 : Planet cand. discovered using K2's 1st yr (Crossfield+, 2016)
J/ApJ/844/102 : KIC star plx from asteroseismology vs Gaia (Huber+, 2017)
J/ApJS/229/30 : Revised properties of Q1-17 Kepler targets (Mathur+, 2017)
J/ApJS/235/38 : Kepler planetary cand. VIII. DR25 reliability (Thompson+, 2018)
J/ApJS/236/42 : Asteroseismology of ∼16000 Kepler red giants (Yu+, 2018)
J/ApJS/239/5 : Variable stars and cand. planets from K2 (Crossfield+, 2018)
J/AJ/155/39 : Variability of TESS sources with KELT (Oelkers+, 2018)
http://archive.stsci.edu/tess/ : TESS MAST home page
http://tess.mit.edu/ : TESS home page
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 9 I9 --- TICID [144875/471012687] TESS Input Catalog ID
number of star
11- 22 F12.8 deg RAdeg Right ascension, decimal degrees (J2000)
24- 36 F13.9 deg DEdeg Declination, decimal degrees (J2000)
38- 49 F12.8 deg ELON Ecliptic longitude, decimal degrees
51- 60 F10.6 deg ELAT Ecliptic latitude, decimal degrees
62- 78 F17.15 --- Prior [0/1] Candidate Target List (CTL) v6.1 priority
80- 80 I1 --- 2min [0/1] Was this a 2-minute cadence target
in our model? 1=yes; 0=no
82- 82 I1 --- Cam [1/4] TESS camera number
84- 88 F5.1 d Obslen [27.4/356.2] Number of days that
target is observed
90- 91 I2 --- Nsec [1/13] Number of sectors the target
is observed for
93- 98 F6.3 mag Vmag [4/20] V-band magnitude
100-105 F6.3 mag Kmag [1.7/14.2] 2MASS Ks-band magnitude
107-112 F6.3 mag Jmag [2.3/15] 2MASS J-band magnitude
114-119 F6.3 mag Tmag [3.4/16.4] TESS bandpass magnitude
121-126 F6.3 Rsun R* [0.1/11.5] Stellar radius
128-132 F5.3 Msun Mass [0.06/2.5] Stellar mass
134-140 F7.1 K Teff [2763/11565] Stellar effective temperature
142-150 F9.3 pc Dist [2.5/15349]? Distance of the star
152-152 I1 --- sG [0/1] Was this star randomly selected to
be a subgiant? 1=yes; 0=no
154-154 I1 --- Det [1] Was this planet detected? 1=yes (always "1")
156-156 I1 --- DetC [0/1] Was this planet detected using the
conservative model? 1=yes; 0=no
158-166 F9.6 d Perp [0.5/99.4] Orbital period of the planet
168-173 F6.3 Rgeo Rp [0.6/22] Radius of the planet
175-177 I3 --- Nt [2/425] Number of transits the planet has
179-185 F7.3 --- Ars [1/243.5] Planet semimajor axis scaled
by the stellar radius
187-194 F8.6 --- Ecc [9e-06/0.5] Planet orbital eccentricity
196-203 F8.6 --- Rprs [0.005/0.4] Planet radius scaled
by the stellar radius
205-209 F5.3 --- Impact [0/1] Planet impact parameter
211-216 F6.3 h Dur [0.3/37.934] Planet transit duration
218-226 F9.3 10-6 Obsdepth [25.6/92074] The observed transit depth,
corrected for dilution in parts per million
228-237 F10.3 --- Insol [0.06/242177] Insolation flux the planet
receives relative to that received by
the Earth from the Sun
239-247 F9.3 10-6 Noise [60/18605] The one-hour integrated noise
level of the star in parts per million
249-256 F8.3 --- SNR [7/1542] Combined signal-to-noise ratio
of all transits
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 04-Dec-2018