J/AJ/170/356 Catalog of eccentric eclipsing binaries from TESS (Tang+, 2025)
A sample of eccentric eclipsing binaries in TESS.
Tang Y., Chen X., Gai N., Wang S., Li Z., Li Z., Li K., Wang Y.
<Astron. J., 170, 356 (2025)>
=2025AJ....170..356T 2025AJ....170..356T
ADC_Keywords: Binaries, eclipsing; Stars, distances; Photometry; Optical;
Colors; Reddening
Keywords: Binary stars
Abstract:
Eccentric eclipsing binaries (EEBs) are the ideal objects to constrain
the tidal theory. During the 2yr mission, TESS 2min cadence mode
obtained high-precision photometry of more than 200,000 objects
distributed over almost the entire sky. Among these objects, we
identify 368 EEBs, including 23 newly discovered systems, through a
detailed analysis of periods, light-curve shapes, and eclipses. We
have also adopted the two recent TESS-based eclipsing binary catalogs,
bringing our sample size to 514. The eccentricity, argument of
periastron, absolute magnitude, and intrinsic color are determined for
these EEBs. We find the absolute magnitude MG of EEBs has a span of at
least 20mag. Stars as low as 0.15M☉ and as high as 30M☉
can have an eccentric orbit. Based on the parameters of Gaia Radial
Velocity Spectrometer spectra, we find four EEBs contain evolved
components, namely, TIC146039664, TIC141809359, TIC428249301, and
TIC294261093. Overall, more luminous EEBs have a shorter circularization
period. There are peculiarities in the eccentricity distribution of
the brightest and faintest EEBs (MG<1 and MG>5). The former may
not have a strict cutoff circularization period, while the latter may
still have an eccentric orbit at periods shorter than 1day.
Description:
We analyzed a total of 231,947 objects in sectors 1-26 of the
Transiting Exoplanet Survey Satellite (TESS), covering 2yr of
observations from 2018 July to 2020 July. Each sector is observed for
27d, and photometry (600-1000nm) is obtained at a 2min cadence. There
are 128,258 objects in the southern hemisphere of the ecliptic, of
which the numbers of observed sectors are N=1 for 92,442 objects, N=2
for 20,621 objects, and 3≤N≤13 for 15,195 objects. There are 103,689
objects in the northern hemisphere of the ecliptic, of which N=1 for
61,197 objects, N=2 for 17,790 objects, and 3≤N≤13 for 24,702
objects. The longest observed regions are centered on the ecliptic
poles and are observed by 13 sectors. For objects with more than 2
sector observations, we combined the data from each sector for the
analysis. As a result, we are able to obtain some EEBs with periods
longer than 27d.
The TESS LCs can be downloaded through the Mikulski Archive for Space
Telescopes. We used the flux of presearch data conditioning simple
aperture photometry to perform LC analysis. We manually selected
eclipsing binaries by judging that the phase-folded LC has two
eclipses. These processes reduce the sample from 231,947 to about
5448, and further analysis gave us a final sample of 514 EEBs.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
t1pdf.dat 127 514 TESS catalog of eccentric eclipsing binaries (PDF)
t1mrt.dat 342 514 TESS catalog of eccentric eclipsing binaries (MRT)
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See also:
I/355 : Gaia DR3 Part 1. Main source (Gaia Collaboration, 2022)
II/366 : ASAS-SN catalog of variable stars (Jayasinghe+, 2018-2020)
IV/39 : TESS Input Catalog version 8.2 (TIC v8.2) (Paegert+, 2021)
J/AJ/134/1963 : MACHO r,b LCs of MC eclipsing binaries (Faccioli+, 2007)
J/AJ/135/850 : Properties of eclipsing binaries found in TrES (Devor+, 2008)
J/other/A+ARV/18.67 : Accurate masses and radii of normal stars (Torres+, 2010)
J/AcA/61/103 : VI light curves of LMC eclipsing binaries (Graczyk+, 2011)
J/AJ/141/83 : Kepler Mission. I. Eclipsing binaries in DR1 (Prsa+, 2011)
J/AcA/63/323 : OGLE-III SMC eclipsing binary stars (Pawlak+, 2013)
J/ApJS/213/9 : Catalina Surveys periodic variable stars (Drake+, 2014)
J/MNRAS/441/343 : Highly eccentric detached eclipsing binar. (Shivvers+, 2014)
J/AJ/150/1 : Eclipse timings of 27 eclipsing binar. in the SMC (Hong+, 2015)
J/MNRAS/460/650 : Apsidal motions of 90 SMC eccentric binaries (Hong+, 2016)
J/AJ/151/68 : Kepler Mission. VII. Eclipsing binaries in DR3 (Kirk+, 2016)
J/AcA/66/421 : Eclipsing binaries in the Magellanic System (Pawlak+, 2016)
J/AcA/66/405 : Gal. bulge eclipsing & ellipsoidal binaries (Soszynski+, 2016)
J/ApJ/824/15 : Orbit. circularization of Kepler eclips. bin. (Van Eylen+, 2016)
J/MNRAS/469/3688 : CSS Periodic Variable Star Catalogue (Drake+, 2017)
J/AJ/154/105 : Parameters of 529 Kepler eclipsing binaries (Kjurkchieva+, 2017)
J/ApJS/237/28 : WISE catalog of periodic variable stars (Chen+, 2018)
J/AJ/156/241 : 1st catalog of variable stars measured by ATLAS (Heinze+, 2018)
J/A+A/620/A172 : Solar neighbourhood young stars 3D mapping (Zari+, 2018)
J/A+A/619/A85 : 54 new eccentric galactic eclipsing binaries (Zasche+, 2018)
J/MNRAS/489/1644 : Modelling Kepler eclipsing binaries (Windemuth+, 2019)
J/ApJS/249/18 : The ZTF catalog of periodic variable stars (Chen+, 2020)
J/A+A/640/A33 : LMC 162 eccentric eclipsing binar. light curve (Zasche+, 2020)
J/A+A/647/A116 : YSO candidate catalog from ANN (Cornu+, 2021)
J/ApJ/912/123 : TESS EBs in the southern hemisphere (Justesen+, 2021)
J/AJ/162/127 : LC phases from 2nd year TESS primary mission (Wong+, 2021)
J/ApJS/258/16 : TESS Eclipsing Binary stars. I. Sectors 1-26 (Prsa+, 2022)
J/A+A/685/A62 : Eclipsing binary parameters (IJspeert+, 2024)
Byte-by-byte Description of file: t1pdf.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- [TIC] [TIC]
5- 13 I9 --- TIC [1190662/470208013] TESS Input Catalog
(IV/39) identifier
15- 23 F9.5 deg RAdeg Right ascension (J2000)
25- 33 F9.5 deg DEdeg Declination (J2000)
35- 43 F9.5 d Per [0.5/100.21] Period
45- 49 F5.3 --- e [1e-3/0.72] Eccentricity
51- 57 F7.2 deg w Argument of periastron
59- 66 F8.5 --- ecosw [-0.65/0.71] Eccentricity * cosine of
periastron argument, e.cos(w)
68- 74 F7.5 --- e_ecosw ecosw uncertainty
76- 82 F7.4 --- esinw [-0.63/0.4] Eccentricity * sine of periastron
argument, e.sin(w)
84- 89 F6.4 --- e_esinw [9e-4/0.33] esinw uncertainty
91- 96 F6.3 mag GMag [-5.4/13.68]? Absolute Gaia G-band magnitude
98- 103 F6.3 mag (BP-RP)0 [-0.65/3.99]? BP-RP intrinsic colour
105- 112 F8.5 kpc Dist [0.017/10.01]? Distance
114- 121 F8.5 kpc e_Dist [1e-5/17.92]? Dist uncertainty
123- 127 F5.3 mag E(B-V) [0/1.72]? Extinction E(B-V)
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Byte-by-byte Description of file: t1mrt.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- [TIC] [TIC]
5- 13 I9 --- TIC TESS Input Catalog (IV/39) identifier
15- 24 F10.8 --- e [0.01/0.79] Eccentricity
26- 35 F10.8 --- e_e [2.09e-6/0.63] Uncertainty in e
37- 47 F11.8 --- esinw [-0.45/0.79] Eccentricity * cosine of
periastron argument, e.sin(w)
49- 58 F10.8 --- e_esinw [1.6e-4/1.7] Uncertainty in esinw
60- 70 F11.8 --- ecosw [-0.57/0.71] Eccentricity * cosine of
periastron argument, e.cos(w)
72- 81 F10.8 --- e_ecosw [1.08e-6/1.71e-3] Uncertainty in ecosw
83 I1 --- alpha0 [1] Flux zero-point shift
85- 95 F11.8 --- Phase1 [-0.28/0.451] Time of minimum of primary
eclipse (T1)
97- 106 F10.8 --- e_Phase1 [4.5e-7/4.7e-4] Uncertainty in Phase1 (e_T1)
108- 117 F10.8 d d1 [4.1e-4/0.09] Eclipse width of primary eclipse
119- 128 F10.8 d e_d1 [1.01e-6/0.011] Uncertainty in d1
130- 140 F11.8 --- Gamma1 [0.19/10] Kurtosis of primary eclipse
142- 151 F10.8 --- e_Gamma1 [5.7e-4/0.63] Uncertainty in Gamma1
153- 163 F11.8 --- C1 [-1.42/0.72] Scaling parameter of primary
eclipse
165- 174 F10.8 --- e_C1 [4.8e-4/0.66] Uncertainty in C1
176- 186 F11.8 --- alphak1 [-1.1/-2.5e-4] Scaling coefficient for eclipse
depth of primary eclipse
188- 197 F10.8 --- e_alphak1 [3.83e-6/0.007] Uncertainty in alphak1
199- 209 F11.8 --- Phase2 [-0.49/0.49] Time of minimum of secondary
eclipse (T2)
211- 220 F10.8 --- e_Phase2 [4.3e-7/9.9e-4] Uncertainty in Phase2 (e_T2)
222- 231 F10.8 d d2 [3.4e-4/0.16] Eclipse width of secondary
eclipse
233- 242 F10.8 d e_d2 [8.3e-7/0.02] Uncertainty in d2
244- 254 F11.8 --- Gamma2 [0.16/10] Kurtosis of secondary eclipse
256- 266 F11.8 --- e_Gamma2 [0/13.84] Uncertainty in Gamma2
268- 278 F11.8 --- C2 [-1.42/1] Scaling parameter of secondary
eclipse
280- 289 F10.8 --- e_C2 [0/5.46] Uncertainty in C2
291- 301 F11.8 --- alphak2 [-1.08/2.3e-4] Scaling coefficient for eclipse
depth of secondary eclipse
303- 312 F10.8 --- e_alphak2 [2.18e-6/7.6e-3] Uncertainty in alphak2
314- 315 I2 --- amp-c [0/26] Parameter amp-c
317- 318 I2 --- e_amp-c [0/27] Uncertainty in amp-c
320- 321 I2 --- amp-p1 [0/28] Parameter amp-p1
323- 324 I2 --- e_amp-p1 [0/29] Uncertainty in amp-p1
326- 327 I2 --- amp-p2 [0/30] Parameter amp-p2
329- 330 I2 --- e_amp-p2 [0/31] Uncertainty in amp-p2
332- 333 I2 --- amp-p3 [0/32] Parameter amp-p3
335- 336 I2 --- e_amp-p3 [0/33] Uncertainty in amp-p3
338- 339 I2 --- amp-p4 [0/34] Parameter amp-p4
341- 342 I2 --- e_amp-p4 [0/35] Uncertainty in amp-p4
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History:
From electronic version of the journal
License: CC-BY-4.0
(End) Prepared by [AAS], Robin Leichtnam [CDS] 09-Sep-2026