IV/38 TESS Input Catalog - v8.0 (TIC-8) (Stassun+, 2019)
Transiting Exoplanet Survey Satellite (TESS) Input Catalog - v8.0 (TIC-8)
Stassun K.G., , Oelkers R.J., Paegert M., Torres G., Pepper J., De Lee N.,
Collins K., Latham D.W., Muirhead P.S., Chittidi J., Rojas-Ayala B.,
Fleming S.W., Rose M.E., Tenenbaum P., Ting E.B., Kane S.R., Barclay T.,
Bean J.L., Brassuer C.E., Charbonneau D., Ge J., Lissauer J.J., Mann A.,
McLean B., Mullally S., Narita N., Plavchan P., Ricker G.R., Sasselov D.,
Seager S., Sharma S., Shiao B., Sozzetti A., Stello D., Vanderspek R.,
Wallace G., Winn J.N.
<Astron. J., 158, 138-138 (2019)>
=2019AJ....158..138S 2019AJ....158..138S
=2019yCat.4038....0S 2019yCat.4038....0S
ADC_Keywords: Stars, nearby; Stars, bright; Cross identifications;
Stars, diameters; Stars, masses; Photometry, infrared;
Photometry, SDSS; Proper motions; Parallaxes, trigonometric;
Stars, distances; Exoplanets
Mission_Name: TESS
Keywords: stars: fundamental parameter
Description:
The TIC is used to help identify two-minute cadence target selection
for the Transiting Exoplanet Survey Satellite (TESS) mission, and to
calculate physical and observational properties of planet candidates.
It is for use by both the TESS science team and the public, and it is
periodically updated - the current version is TIC-8. TIC-8 uses the
GAIA DR2 catalog as a base and merges a large number of other
photometric catalogs, including 2MASS, UCAC4, APASS, SDSS, WISE, etc.
There are roughly 1.5 billion stellar and extended sources in TIC-8,
containing compiled magnitudes including B, V, u, g, r, i, z, J, H, K,
W1-W4, and G. This version was released in May 2019, and is expected
to be the last official version of the TIC produced by the TESS
mission, although future, independent development of the TIC is
possible.
The TIC is the responsibility of the SAO Arm of the TESS Science
Office under the leadership of David Latham. The TESS Target Selection
Working Group (TSWG) is co-chaired by Keivan Stassun (Vanderbilt) &
Joshua Pepper (Lehigh).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tic.sam 1190 1000 Transiting Exoplanet Survey Satellite (TESS)
Input Catalog - v8.0 (TIC-8), sample outpout
(on a total of 1,727,987,580 sources)
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See also:
B/pastel : The PASTEL catalogue (Soubiran+, 2016-)
I/239 : The Hipparcos and Tycho Catalogues (ESA 1997)
I/259 : The Tycho-2 Catalogue (Hog+ 2000)
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
I/311 : Hipparcos, the New Reduction (van Leeuwen, 2007)
V/130 : Geneva-Copenhagen Survey of Solar neighbourhood III (Holmberg+, 2009)
V/133 : Kepler Input Catalog (Kepler Mission Team, 2009)
I/322 : UCAC4 Catalogue (Zacharias+, 2012)
V/139 : The SDSS Photometric Catalog, Release 9 (Adelman-McCarthy+, 2012)
II/328 : AllWISE Data Release (Cutri+ 2013)
V/146 : LAMOST DR1 catalogs (Luo+, 2015)
V/147 : The SDSS Photometric Catalogue, Release 12 (Alam+, 2015)
II/336 : AAVSO Photometric All Sky Survey (APASS) DR9 (Henden+, 2016)
II/349 : The Pan-STARRS release 1 (PS1) Survey - DR1 (Chambers+, 2016)
III/279 : RAVE 5th data release (Kunder+, 2017)
I/339 : Hot Stuff for One Year (HSOY) (Altmann+, 2017)
IV/34 : K2 Ecliptic Plane Input Catalog (EPIC) (Huber+, 2017)
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
I/347 : Distances to 1.33 billion stars in Gaia DR2 (Bailer-Jones+, 2018)
J/other/A+ARV/18.67 : Accurate masses and radii of normal stars (Torres+, 2010)
J/AJ/142/112 : KIC photometric calibration (Brown+, 2011)
J/ApJ/779/188 : Spectra of nearby late K and M Kepler stars (Mann+, 2013)
J/MNRAS/444/392 : Synthetic Stellar Photometry. I. (Casagrande+, 2014)
J/ApJ/804/64 : Empirical and model parameters of 183 M dwarfs (Mann+, 2015)
J/ApJ/809/77 : Transiting Exoplanet Survey Satellite (TESS) (Sullivan+, 2015)
J/ApJS/224/2 : K2 EPIC stellar properties for 138600 targets (Huber+, 2016)
J/ApJS/225/32 : Extended abundance analysis of cool stars (Brewer+, 2016)
J/A+A/600/A30 : Limb-darkening for TESS satellite (Claret, 2017)
J/ApJ/844/102 : KIC star plx from asteroseismology vs Gaia (Huber+, 2017)
J/ApJ/866/99 : Revised radii of KIC stars+pl. using Gaia DR2 (Berger+, 2018)
J/A+A/618/A20 : Limb-darkening for TESS, Kepler, Corot, MOST (Claret, 2018)
J/A+A/619/A180 : Gaia DR2 photom. sensitivity curves (Maiz Apellaniz+, 2018)
J/AJ/155/39 : Variability data of TIC sources with KELT (Oelkers+, 2018)
J/AJ/155/180 : A catalog of cool dwarf targets for the TESS (Muirhead+, 2018)
J/AJ/156/82 : RVel characterization of TESS planets (Cloutier+, 2018)
J/AJ/156/102 : TESS Input Catalog & Candidate Target List (Stassun+, 2018)
J/AJ/156/234 : KELT transit false positive catalog for TESS (Collins+, 2018)
J/ApJS/239/2 : Simulated exoplanets from TESS targets (Barclay+, 2018)
J/MNRAS/478/2676 : New white dwarf pulsators for TESS (Bognar+, 2018)
J/MNRAS/478/4513 : GALAH Survey DR2 (Buder+, 2018)
J/AJ/157/113 : TESS M-dwarf exoplanetary systems (Ballard, 2019)
J/AJ/157/235 : Observations of the Kepler field with TESS (Christ+, 2019)
J/AJ/158/25 : Automated triage and vetting of TESS candidates (Yu+, 2019)
J/AJ/158/81 : Low-mass stars from the first TESS sectors (Cloutier, 2019)
J/AJ/158/177 : Near-resonance in a sub-Neptune syst. from TESS (Quinn+, 2019)
J/ApJS/241/12 : Asteroseismic Target List (ATL) for TESS (Schofield+, 2019)
J/PASP/131/C4401 : TESS predicted yield of transits (Dalba+, 2019)
J/A+A/623/A110 : Gaia DR2. Variable stars in CMD (Gaia Collaboration+, 2019)
J/A+A/630/A114 : TESS light curves detection limits (Tregloan-Reed+, 2019)
J/A+A/633/A53 : TESS planet candidates classification (Osborn+, 2020)
http://tess.mit.edu/science/tess-input-catalogue/ : TESS Input Catalog home
http://archive.stsci.edu/tess/tic_search.html : TIC search on MAST
http://outerspace.stsci.edu/display/TESS/
TIC+v8+and+CTL+v8.xx+Data+Release+Notes : TIC v8 Data Release Notes
Byte-by-byte Description of file: tic.sam
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Bytes Format Units Label Explanations
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1- 11 I11 --- TIC [1/10005000540] TESS Input Catalog identifier
13- 27 F15.11 deg RAdeg Right Ascension (J2000) (RA) (1)
29- 43 F15.11 deg DEdeg Declination (J2000) (Dec) (1)
45- 50 I6 --- HIP ? Hipparcos Identifier
52- 63 A12 --- TYC ? Tycho2 Identifier
65- 74 A10 --- UCAC4 ? UCAC4 Identifier (UCAC)
76- 92 A17 --- 2MASS ? 2MASS Identifier (HHMMSSss+DDMMSSs, J2000)
(TWOMASS)
94- 112 I19 --- objID ? SDSS DR9 objID Identifier (SDSS)
114- 132 A19 --- WISEA ? ALLWISE Identifier (JHHMMSS.ss+DDMMSS.s)
(ALLWISE)
134- 152 I19 --- GAIA ? GAIA DR2 Identifier
154- 161 I8 --- APASS ? APASS DR9 Identifier (2)
163- 170 I8 --- KIC ? KIC Identifier
172- 179 A8 --- S/G Object Type ("STAR" or "EXTENDED") (ObjType)
181- 191 A11 --- Ref ? The source of the object in the TIC
(Typesrc) (3)
193- 203 A11 --- r_Pos Source of the position (Posflag) (3)
205- 213 F9.3 mas/yr pmRA [-4411/6766]? Proper Motion in Right Ascension
215- 221 F7.3 mas/yr e_pmRA [0.01/200]? Uncertainty in pmRA
223- 231 F9.3 mas/yr pmDE [-5818/10363]? Proper Motion in Declination
(pmDec)
233- 238 F6.3 mas/yr e_pmDE [0.01/99]? Uncertainty in pmDE (e_pmDEC)
240- 245 A6 --- r_pm ? Source of the Proper Motion (PMflag) (3)
247- 256 F10.4 mas Plx [-1857/1852]? Parallax
258- 264 F7.4 mas e_Plx [0.009/94]? Error in the parallax
266- 270 A5 --- r_Plx ? Source of the parallax (PARflag) (3)
272- 286 F15.11 deg GLON Galactic Longitude (gallong)
288- 302 F15.11 deg GLAT Galactic Latitude (gallat)
304- 318 F15.11 deg ELON Ecliptic longitude (eclong)
320- 334 F15.11 deg ELAT Ecliptic latitude (eclat)
336- 341 F6.3 mag Bmag [-6.7/50]? Johnson B magnitude (4)
343- 348 F6.3 mag e_Bmag [0.001/27]? Uncertainty in Bmag
350 I1 --- ueBmag [0/1]? Uncertainty flag on e_Bmag (16)
352- 357 F6.3 mag Vmag [-0.2/23.1]? Johnson V magnitude (5)
359- 363 F5.3 mag e_Vmag [0.001/7]? Uncertainty in Vmag
365 I1 --- ueVmag [0/1]? Uncertainty flag on e_Vmag (16)
367- 372 F6.3 mag umag [5.3/30]? SDSS u-band (AB) magnitude
374- 382 F9.3 mag e_umag [0/50260]? Uncertainty in umag
384- 389 F6.3 mag gmag [5.4/30]? SDSS g-band (AB) magnitude
391- 399 F9.3 mag e_gmag [0/27628]? Uncertainty in gmag
401- 406 F6.3 mag rmag [4/30]? SDSS r-band (AB) magnitude
408- 416 F9.3 mag e_rmag [0/27628]? Uncertainty in rmag
418- 423 F6.3 mag imag [3.9/30]? SDSS i-band (AB) magnitude
425- 433 F9.3 mag e_imag [0/63182]? Uncertainty in imag
435- 440 F6.3 mag zmag [4.3/30]? SDSS z-band (AB) magnitude
442- 450 F9.3 mag e_zmag [0/63182]? Uncertainty in zmag
452- 457 F6.3 mag Jmag [-3/26]? 2MASS Johnson J-band magnitude
459- 463 F5.3 mag e_Jmag [0/10]? Uncertainty in Jmag
465- 470 F6.3 mag Hmag [-4.1/25]? 2MASS Johnson H-band magnitude
472- 476 F5.3 mag e_Hmag [0.01/10]? Uncertainty in Hmag
478- 483 F6.3 mag Kmag [-4.4/25]? 2MASS Johnson Ks-band magnitude
485- 489 F5.3 mag e_Kmag [0.01/10]? Uncertainty in Kmag
491- 509 A19 --- q_2MASS ? Quality Flags for 2MASS (TWOMflag) (6)
511- 516 F6.3 mag W1mag [-2.4/20]? AllWise W1 (3.4um) magnitude
518- 522 F5.3 mag e_W1mag [0.001/0.6]? Uncertainty in W1mag
524- 529 F6.3 mag W2mag [-3/24]? AllWISE W2 (4.6um) magnitude
531- 535 F5.3 mag e_W2mag [0.001/0.6]? Uncertainty in W2mag
537- 542 F6.3 mag W3mag [-9/23]? AllWISE W3 12um magnitude
544- 548 F5.3 mag e_W3mag [0.001/0.6]? Uncertainty in W3mag
550- 555 F6.3 mag W4mag [-8.3/23]? AllWISE W4 22um magnitude
557- 561 F5.3 mag e_W4mag [0.001/0.6]? Uncertainty in W4mag
563- 571 F9.6 mag Gmag [1.7/24]? GAIA DR2 G magnitude
573- 580 F8.6 mag e_Gmag [0.00006/2.4]? Uncertainty in Gmag
582- 587 F6.3 mag Tmag [-1.8/27.4] TESS magnitude (7)
589- 594 F6.3 mag e_Tmag [0.006/50]? Uncertainty in TESS Magnitude
596- 600 A5 --- f_Tmag ? TESS Magnitude Flag (TESSFlag) (8)
602- 606 A5 --- Flag ? Stellar Properties Flag (SPFlag) (3)
608- 614 F7.1 K Teff [2717/79742]? Effective Temperature (18)
616- 622 F7.1 K s_Teff [1/27791]? Uncertainty in Teff (13)
624- 629 F6.4 [cm/s2] logg [3/6.6]? log of the Surface Gravity (19)
631- 636 F6.4 [cm/s2] s_logg [0.0004/5]? Uncertainty in logg (13)
638- 644 F7.4 [Sun] [M/H] [-4.7/1.4]? Metallicity (M/H) (17)
646- 651 F6.4 [Sun] e_[M/H] [0.001/0.5]? Uncertainty in [M/H] (e_M/H)
653- 660 F8.3 Rsun Rad [0.05/2753]? Radius (21)
662- 667 F6.3 Rsun s_Rad [0.001/13]? Uncertainty in Rad (13)
669- 673 F5.3 Msun Mass [0.08/3.3]? Mass (20)
675- 679 F5.3 Msun s_Mass [0.01/4.6]? Uncertainty in Mass (13)
681- 689 F9.4 Sun rho [0.008/2538]? Stellar Density in solar units
(Mass/Rad3)
691- 699 F9.4 Sun s_rho [0.001/2538]? Uncertainty in rho (13)
701- 705 A5 --- LClass ? Luminosity Class (LumClass) (9)
707- 716 F10.5 Lsun Lum [0.0005/5917]? Stellar Luminosity;
Rad2*(Teff/5772)4
718- 727 F10.5 Lsun s_Lum [0.00006/5764]? Uncertainty in Lum (13)
729- 740 F12.4 pc Dist [1/1567769]? Distance (d)
742- 753 F12.4 pc s_Dist [0.0003/1565730]? Uncertainty
in Dist (e_d) (13)
755- 761 F7.4 mag E(B-V) [0/48]? Applied Color Excess
763- 769 F7.4 mag s_E(B-V) [0/20]? Uncertainty in E(B-V) (13)
771- 775 I5 --- Ncont [6/15080]?=0 Number of contaminants found
within 10" of the star, used in the
calculation of the contamination ratio
(numcont)
777- 786 F10.4 --- Rcont [0/40556]? Contamination Ratio
(contratio) (10)
788- 796 A9 --- Disp ? Disposition type (disposition) (11)
798- 806 I9 --- m_TIC [104/471016469]?=0 TIC ID of the 'other'
object in DUPLICATE, or SPLIT set of stars
(dup_id)
808- 815 F8.6 --- Prior [0/1]? Priority (1= highest priority)
(priority) (12)
817- 823 F7.4 mag e_E(B-V) [0/22]? Negative error for E(B-V) (eneg_EBV)
825- 831 F7.4 mag E_E(B-V) [0/35]? Positive error for E(B-V) (epos_EBV)
833- 841 A9 --- f_E(B-V) ? Source of E(B-V) (EBVflag) (14)
843- 847 F5.3 Msun e_Mass [0.01/2]? Negative error for Mass (eneg_Mass)
849- 853 F5.3 Msun E_Mass [0.03/2]? Positive error for Mass (epos_Mass)
855- 859 F5.3 Rsun e_Rad [0.008/3.1]? Negative error for Rad (eneg_Rad)
861- 866 F6.3 Rsun E_Rad [0.01/24]? Positive error for Rad (epos_Rad)
868- 875 F8.4 Sun e_rho [0.0004/226.5]? Negative error for Density
(eneg_rho)
877- 884 F8.4 Sun E_rho [0.001/226.5]? Positive error for Density
(epos_rho)
886- 891 F6.4 [cm/s2] e_logg [0.02/1.7]? Negative error for Surface Gravity
(eneg_logg)
893- 898 F6.4 [cm/s2] E_logg [0.01/0.7]? Positive error for Surface Gravity
(epos_logg)
900- 909 F10.5 Lsun e_Lum [0.001/1424]? Negative error for Luminosity
(eneg_lum)
911- 920 F10.5 Lsun E_Lum [0.001/2352]? Positive error for Luminosity
(epos_lum)
922- 931 F10.4 pc e_Dist [0.0003/19098]? Negative Error for Dist
(eneg_dist) (22)
933- 946 F14.4 pc E_Dist [0.0003/155560992]? Positive Error for
Dist (epos_dist) (22)
948- 953 A6 --- r_Dist ? Source of distance (distflag) (3)
955- 960 F6.1 K e_Teff [23/6390]? Negative error for Teff (eneg_Teff)
962- 967 F6.1 K E_Teff [29/4809]? Positive error for Teff (epos_Teff)
969- 974 A6 --- r_Teff ? Source of Teff (Tefflag) (3)
976- 984 F9.6 mag BPmag [2.5/25.4]? Gaia Bp magnitude (gaiabp)
986- 993 F8.6 mag e_BPmag [0.000001/9]? Error in Gaia Bp magnitude
(e_gaiabp)
995-1003 F9.6 mag RPmag [0.001/29]? Gaia Rp magnitude (gaiarp)
1005-1013 F9.6 mag e_RPmag [0.000001/50]? Error in Gaia Rp magnitude
(e_gaiarp)
1015-1016 I2 --- q_Gaia [-1/1] Quality of Gaia information (gaiaqflag)
(15)
1018-1028 A11 --- r_Vmag ? Source of V magnitude (VmagFlag) (3)
1030-1037 A8 --- r_Bmag ? Source of B magnitude (BmagFlag) (3)
1039-1053 A15 --- Clist ? Identifies if star is in a specially curated
list ("cooldwarfs_v8":cool dwarf star version
TICv8 or "hotsubdwarfs_v8") (splists)
1055-1075 F21.11 mas e_RAdeg [0/101165816] Error in RAdeg (e_RA)
1077-1097 F21.11 mas e_DEdeg [0/101165816] Error in DEdeg (e_Dec)
1099-1113 F15.11 deg RAOdeg RA from original catalog (RA_orig)
1115-1129 F15.11 deg DEOdeg Dec from original catalog (Dec_orig)
1131-1151 F21.11 mas e_RAOdeg [0/101165816] RA error as given in
original catalog (eRAorig)
1153-1173 F21.11 mas e_DEOdeg [0/101165816] DEC error as given in
original catalog (eDecorig)
1175-1176 I2 --- RadFl [-1/1] 1: dwarf by radius, 0: giant by radius;
-1: insufficient information (raddflag)
1178-1179 I2 --- WDFl [-1/1] 1: star in Gaia's photometric White
Dwarf region (wdflag)
1181-1190 I10 --- ID [382303/1728369882] Object internal identifier
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Note (1): The right ascension and declination are provided in epoch 2000 due to
mission requirements. Users are requested to use the original catalog
right ascension (column RAOdeg, DEOdeg) when propagating positions forward.
Note (2): APASS stars do not have identifiers, only coordinates. The primary
key of an internal TIC version of the APASS database table as a proxy
identifier. This match has not been updated in TICv8.
Note (3): References as follows:
gaia2 = from Gaia DR2
hip = from Hipparcos
cooldwarfs = stellar source is the cool dwarf list
(Muirhead+, 2018, J/AJ/155/180)
cdwarf = from the cool dwarf catalog (TICv6;
see Stassun+ 2018AJ....156..102S 2018AJ....156..102S)
cdwrf = from the cool dwarf catalog (TICv7;
see Stassun+ 2018AJ....156..102S 2018AJ....156..102S)
2mass = 2MASS
lepine = Lepine (2011, J/AJ/142/138) All-sky Catalog of Bright M Dwarfs
tmgaia = Gaia DR1 with unique 2MASS match
tmgaia2 = Gaia DR2 with unique 2MASS match
tmmgaia = Gaia without unique 2MASS match
hotsubdwarf = hot subdwarf list
hotsd = hot subdwarf list
gicycle1 = the GI cycle 1 program
gistars8 = the GI cycle 2 program
Astroseis = from the asteroseismology group
2MASSEXT = extended source from 2MASS extended source catalog
tgas = from Tycho2-Gaia Astrometric Solution
sblink = from SuperBlink
tycho2 = from Tycho 2
tycho2v3 = V magnitude calculated from Tycho2 Vt
tycho2b3 = B magnitude calculated from Tycho2 Bt
tycho2b = B magnitude calculated from Tycho2 Bt
tycho = B magnitude calculated from Tycho2 Bt
ucac5 = from UCAC5
ucac4 = from UCAC4
hsoy = from Hot Stuff for One Year (Altmann+, 2017, I/339)
tic7 = TICv7
spect = from a spectroscopic catalog
apassdr9 = magnitude adopted from APASS DR-9
apass = V magnitude adopted from APASS DR-7
sblink = V magnitude adopted from Super Blink
mermil = magnitude adopted from the Mermilliod catalog
sirful = V magnitude adopted from the Sirful catalog
hipvmag = V magnitude calculated from Hipparcos
gaiak = magnitude calculated from Gaia DR-1 G and 2MASS Ks
bpbj = B magnitude calculated from 2MASS photometric B
bj2018 = Bailer-Jones+ 2018AJ....156...58B 2018AJ....156...58B (Cat. I/347).
See the appendix of the full documentation for a more comprehensive
description of each source (Stassun+, 2019AJ....158..138S 2019AJ....158..138S).
Note (4): When an observed optical B magnitude is not provided, a B magnitude
is calculated following the relations implemented for TICv7 described
in Stassun+ (2018, J/AJ/156/102).
Note (5): Observed V magnitudes are preferred when they are converted from
Tycho Vt, Hipparcos or UCAC. Otherwise, a Johnson V magnitude is
calculated from the Gaia colors (G, Bp, Rp) for stars that do not have
a reliable observed Johnson V magnitude. If a star does not have a
reliable Gaia color, the V magnitude is calculated following the
relations implemented for TICv7 described in Stassun+ (2018, J/AJ/156/102).
Note (6): The quality flags from 2MASS are provided in a similar format to the
EPIC catalog: phqual-rdflag-blflg-ccflg-galcontam-mpflag.
Note (7): The Tmag values are typically based on relations that depend on
Gaia Bp and Rp magnitudes (see section 3.2.1 in the full documentation
for the relation). TESS magnitudes for objects without appropriate
Gaia Bp or Rp magnitude had their TESS magnitudes calculated using
relations implemented for TICv7 described in
Stassun+ (2018, J/AJ/156/102). Stars which were in the specially
curated hot subdwarfs, and cool dwarfs lists had their TESS magnitudes
directly adopted.
Note (8): The TESSflag denotes which relation, or catalog, provides the TIC TESS
magnitude. Full descriptions can be found in Section 2.3.1 of the full
documentation. Code as follows:
goffs = magnitude from offset from Gaia
gpbr = magnitude from cooldwarfs
gbprp = magnitude calculated from observed Gaia Bp-Rp
rered = magnitude calculated after de-reddening Gaia Bp-Rp and
re-reddening the result
hotsd = magnitude from the hot subdwarf list
cdwrf = magnitude from cool dwarf list (Muirhead+, 2018, J/AJ/155/180)
Flags described in TICv7 documentation
gaiav = magnitude calculated from G and V
(see Stassun+ 2018, J/AJ/156/102 and 2019AJ....158..138S 2019AJ....158..138S)
gaiaj = magnitude calculated from G and 2MASS J
(see Stassun+ 2018, J/AJ/156/102 and 2019AJ....158..138S 2019AJ....158..138S)
gaiah = magnitude calculated from Gaia and 2MASS H
(see Stassun+ 2018, J/AJ/156/102 and 2019AJ....158..138S 2019AJ....158..138S)
gaiak = magnitude calculated from G and 2MASS Ks
(see Stassun+ 2018, J/AJ/156/102 and 2019AJ....158..138S 2019AJ....158..138S)
voffset = magnitude calculated from V and offset
(see Stassun+ 2018, J/AJ/156/102 and 2019AJ....158..138S 2019AJ....158..138S)
gaiaoffset = magnitude calculated from G and an offset
(see Stassun+ 2018, J/AJ/156/102 and 2019AJ....158..138S 2019AJ....158..138S)
joffset = magnitude calculated from 2MASS J offset (+0.5 for J-Ks<-0.1)
(see Stassun+ 2018, J/AJ/156/102 and 2019AJ....158..138S 2019AJ....158..138S)
joffset2 = magnitude calculated from 2MASS J and an offset
(+1.75 for J-Ks>1) (see Stassun+ 2018, J/AJ/156/102
and 2019AJ....158..138S 2019AJ....158..138S)
hoffset = magnitude calculated from 2MASS H offset
(see Stassun+ 2018, J/AJ/156/102 and 2019AJ....158..138S 2019AJ....158..138S)
koffset = magnitude calculated from 2MASS Ks and offset
(see Stassun+ 2018, J/AJ/156/102 and 2019AJ....158..138S 2019AJ....158..138S)
vjh = magnitude calculated from V and 2MASS J-H
(see Stassun+ 2018, J/AJ/156/102 and 2019AJ....158..138S 2019AJ....158..138S)
jhk = magnitude calculated from 2MASS J-Ks
(see Stassun+ 2018, J/AJ/156/102 and 2019AJ....158..138S 2019AJ....158..138S)
vjk = magnitude calculated from V and 2MASS J-Ks
(see Stassun+ 2018, J/AJ/156/102 and 2019AJ....158..138S 2019AJ....158..138S)
jh = magnitude calculated from 2MASS J-H
(see Stassun+ 2018, J/AJ/156/102 and 2019AJ....158..138S 2019AJ....158..138S)
tmvk = magnitude calculated from V and 2MASS Ks (same as vk)
(see Stassun+ 2018, J/AJ/156/102 and 2019AJ....158..138S 2019AJ....158..138S)
bpjk = magnitude calculated from photographic B and 2MASS J-Ks
(see Stassun+ 2018, J/AJ/156/102 and 2019AJ....158..138S 2019AJ....158..138S)
fromapassi = magnitude from cool dwarf list (Muirhead+, 2018, J/AJ/155/180)
fromsdssik = magnitude from cool dwarf list (Muirhead+, 2018, J/AJ/155/180)
wmeanvkjhk = magnitude from cool dwarf list (Muirhead+, 2018, J/AJ/155/180)
Note (9): LClass flag denotes the luminosity class of the star. These flags are
defined as follows:
DWARF = the star has a radius smaller than the line in Figure 10 of
the full documentation
GIANT = the star has a radius larger than the line in Figure 10 of
the full documentation
rpmjdwarf = the star has unreliable Gaia information, but the reduced proper
motion calculated in TICv7 identifies the star as a dwarf.
rpmjgiant = the star has unreliable Gaia information, but the reduced proper
motion calculated in TICv7 identifies the star as a giant.
Stars with the flags of rpmjdwarf and rpmjgiant are assumed to be a
dwarf, or giant stars based on their reduced proper motion in
coordination with their 2MASS J magnitude (see Stassun+ 2018, J/AJ/156/102).
Users should be aware the rpmjdwarf flag effectively means that the
star is either a dwarf or a subgiant, based on reduced proper motion cuts.
Note (10): The contamination ratio is defined as the nominal flux from the
contaminants divided by the flux from the source. Flux contamination
is calculated for all stars in the CTL, and the procedure for TICv8 is
identical to the procedure for TICv7.
See section 3.3.3 of Stassun+ (2018, J/AJ/156/102) for a complete
description of the contamination ratio calculation.
Note (11): This column identifies objects that are included in the TIC, but are
likely spurious, or related to other TIC objects in a non-trivial,
non-astrophysical way. Currently, this column is populated as a NULL,
DUPLICATE (6), ARTIFACT (7), or SPLIT (8). When a single star in a
previous TIC is found to be two or more actual sources due to the
enhanced resolution of Gaia DR-2, the original TICID gets the
disposition SPLIT. New TICIDs are assigned to the objects and the
original TICID is in column DUP_ID (column 87). The original star
"SPLIT" star will have NULL in the dup_id. The DUPLICATE flag means
the star is listed twice (or more) in the TIC due to prior
cross-matching difficulties. In this case, DUP_ID contains the TICID
of the real star.
Note (12): This is a floating-point value ranging from 0 to 1, where 1 is
highest priority. The priority is based on the relative ability of
TESS to detect small planetary transits, and is calculated using the
radius of the star, the contamination ratio, and the total expected
photometric precision. Stars are given a boost factor to their
priority that scales with a probabilistic model of the expected number
of sectors any given star could fall in. Typically, the closer the
star is to the Ecliptic North or South pole, the larger the boost
factor. Stars close to the Galactic Plane (|b|<10 degrees) have been
de-boosted by a factor of 0.1 since we generally have a poor
understanding of their true reddening, unless they are in the
specially curated cool dwarf list (see Muirhead+, 2018, J/AJ/155/180)
or hot subdwarf list.
The formula is defined for CTLv8.01 is: (Ns)0.5/(Rad1.5*sigma)
where Ns is the expected number of TESS sectors to observe the star; Rad
is the radius of the star (column 71), and sigma is the expected
photometric precision of the star based on the TESS magnitude (column
61) using the formulation from Pepper et al. 2018 (in prep). The
priority is normalized by the priority for a star with R = 0.1 solar,
Ns = 12.654 sectors, no contamination and sigma = 61.75 ppm.
Some stars will have distinct priorities:
Stars with log(g) values that are greater than 5 have had their
priorities set to 0 to avoid biases from poor quality effective
temperature, extinction, or parallax measurements. Stars in the
specially curated lists are excluded from this scenario. Stars with
ecliptic latitudes (column 28) less than ∼6 degrees in absolute value
are not expected to be observed as part of the main mission due to a
gap in camera coverage between the Southern and Northern observations.
Therefore, their Ns values are 0 and thus the priority is 0.
Note (13): The error provided for the radius, mass, rho, Lum, Dist, E(B-V) are
symmetrized errors, calculated by arithmetic mean of the asymmetric
errors. It is possible these errors may be larger than their values.
Users are cautioned this means the reported value is of untrustworthy.
Note (14): This E(B-V) flag denotes the source of the adopted extinction
as follows:
0 = A color excess applied of 0 (star is closer than 100pc)
schlegel = Reddening applied from Schlegel dust maps (1998ApJ...500..525S 1998ApJ...500..525S)
panstarrs = Reddening applied from Pan-STARRS dust maps
(Green+ 2018MNRAS.478..651G 2018MNRAS.478..651G)
Note (15): Boolean flag that denotes the quality of the Gaia parallax and
magnitude information:
-1 = insufficient information
0 = star fails astrometric or photometric quality check
1 = star passes both checks
Note (16): Uncertainty flag as follows:
0 = Standard deviation of N observations
1 = Poissonian error (unique observation)
Note (17): The metallicity is only provided if it was reported in a
spectroscopic catalog (see Table 1 below) matched to TICv8, using the
order preference described in section 2 of the full documentation. If
a catalog provided more than one measurement of the metallicity for
the a single object, the metallicities were combined using a
weighted-mean. These metallicities were not used in any calculation,
are only provided for convenience, and may conflict with reported
masses and radii -- especially for very metal rich or very metal poor
stars. Users are cautioned against using the reported metallicities
with the calculated TICv8 stellar parameters, without additional
vetting.
-------------------------------------------------------------------------------
Table 1: spectroscopic catalogs in the TIC
-------------------------------------------------------------------------------
Name Data Approximate Priority References
Release No. of Stars
-------------------------------------------------------------------------------
SPOCS --- 1.6k 1 Brewer+ 2016, J/ApJS/225/32
PASTEL --- 93k 2 Soubiran+, 2016-, B/pastel
Gaia-ESO DR3 29k 3 Gilmore+ 2012Msngr.147...25G 2012Msngr.147...25G
TESS-HERMES DR1 25k 4 Sharma+ 2018MNRAS.473.2004S 2018MNRAS.473.2004S
GALAH DR2 340k 5 Buder+, 2018, J/MNRAS/478/4513
APOGEE-2 DR14 277k 6 Abolfathi+ 2018ApJS..235...42A 2018ApJS..235...42A
LAMOST DR4 2.9M 7 Luo+, 2015, V/146
RAVE DR5 484k 8 Kunder+ 2017, III/279
Geneva-Copenhagen DR3 16k 9 Holmberg+, 2009, V/130
-------------------------------------------------------------------------------
Note (18): The effective temperatures come from one of four sources, in the
following order of preference: (1) the Cool Dwarf list or the Hot
Subdwarf list; (2) spectroscopic catalogs (see Column "SPFlag");
(3) dereddended Bp-Rp color (column "gaiabp", "gaiarp"); and
(4) non-dereddened Bp-Rp color (column "gaiabp", "gaiarp").
Note (19): The surface gravity is calculated using the nominal formula:
log10(G*M*Msun/(R*Rsun)2). Where Msun is the mass of the Sun, G is
the gravitational constant, Rsun is the Radius of the Sun, M is the
mass of the star (column "Mass"), and R is the radius of the star
(column "Rad"). Some stars may have unphysical log(g) values for their
estimated temperature, such as log(g)>5, but these log(g) values
should be internally consistent with the provided mass and radii of
each star. The surface gravities provided are not the values reported
by spectroscopic catalogs; they are always calculated from the
reported masses and radii of a given object.
Note (20): The stellar masses were estimated using three techniques:
(1) masses provided in the specially curated cool dwarf list
(see Appendix A of Stassun+ 2019AJ....158..138S 2019AJ....158..138S);
(2) masses provided in the specially curated hot subdwarf list; or
(3) using a unified relation based on measured masses for eclipsing
binaries as well as simulations using Galactic structure models (see
also section 2.3.5 in Stassun+ 2019AJ....158..138S 2019AJ....158..138S).
Note (21): The vast majority of stellar radii in TICv8 were estimated using
three techniques, in the following order of preference:
(1) radii provided by the specially curated Cool Dwarf list
(see Appendix A of Stassun+ 2019AJ....158..138S 2019AJ....158..138S);
(2) radii provided in the Hot Subdwarf list; or
(3) using the Gaia distance, bolometric corrections, G magnitude, and
a preferred temperature.
(4) Some stars had their properties either imported directly from
TICv7, or calculated using TICv7 relationships, if their Gaia
parameters were deemed unreliable enough to determine stellar
characteristics (column "gaiaqflag" =0). Users are directed to
Stassun+ (2018AJ....156..102S 2018AJ....156..102S) for a detailed description of the
relations used to estimate these radii.
Note (22): In less than 6200 cases the distance error bars in TICv8 are
different from those published by Bailer-Jones+ (2018, I/347) because
they had been symmetrized in early versions of the code base for TICv8
and were never corrected. These differences are typically minor (<2%,
maximum = 17%), and should have no impact on the derived properties in
TICv8.
--------------------------------------------------------------------------------
History:
Downloaded from http://archive.stsci.edu/missions/tess/catalogs/tic_v8/
(version 2019/Apr/15).
10-Aug-2020: units of position errors corrected
Acknowledgements:
Martin Paegert [cfa.harvard.edu]
(End) F.-X. Pineau, E. Perret [CDS] 29-Nov-2019