J/A+A/652/A120 TESS OBA-type eclipsing binaries (IJspeert+, 2021)
An all-sky sample of intermediate- to high-mass OBA-type eclipsing binaries
observed by TESS.
IJspeert L.W., Tkachenko A., Johnston C., Garcia S., De Ridder J.,
Van Reeth T., Aerts C.
<Astron. Astrophys. 652, A120 (2021)>
=2021A&A...652A.120I 2021A&A...652A.120I (SIMBAD/NED BibCode)
ADC_Keywords: Stars, early-type ; Binaries, eclipsing ; Magnitudes
Keywords: asteroseismology - binaries: eclipsing - catalogues - ephemerides -
stars: early-type - methods: data analysis
Abstract:
Intermediate- to high-mass stars are the least numerous types of stars
and they are less well understood than their more numerous low-mass
counterparts in terms of their internal physical processes. Modelling
the photometric variability of a large sample of main-sequence
intermediate- to high-mass stars in eclipsing binary systems will help
to improve the models for such stars.
Our goal is to compose a homogeneously compiled sample of
main-sequence intermediate- to high-mass OBA-type dwarfs in eclipsing
binary systems from TESS photometry. We search for binaries with and
without pulsations and determine their approximate ephemerides.
Our selection starts from a catalogue of dwarfs with colours
corresponding to those of OBA-type dwarfs in the TESS Input Catalog.
We develop a new automated method aimed at detecting eclipsing
binaries in the presence of strong pulsational and/or rotational
signal relative to the eclipse depths and apply it to publicly
available 30-min cadence TESS light curves.
Using targets with TESS magnitudes below 15 and cuts in the 2MASS
magnitude bands of J-H<0.045 and J-K<0.06 as most stringent
criteria, we arrive at a total of 189 981 intermediate- to high-mass
candidates, 91193 of which have light curves from at least one of two
data reduction pipelines. The eclipsing binary detection and
subsequent manual check for false positives resulted in 3155 unique
OBA-type eclipsing binary candidates.
Our sample of eclipsing binary stars in the intermediate- to high-mass
regime allows for future binary (and asteroseismic) modelling with the
aim to better understand the internal physical processes in this hot
part of the main sequence.
Description:
The file OBA_catalogue contains the 189981 stars selected through
colour cuts starting off from the TIC (TESS Input Catalog). This
entails an all-sky sample of OBA-type stars up to TESS magnitude 15,
used as an intermediate step towards the EB catalogue. The tabulated
data come directly from the TIC, with the exception of the two columns
containing Simbad information, labelled accordingly. The file
EB_catalogue contains 3425 candidate eclipsing binaries, found by
analysing the publicly available TESS light curves of the OBA sample
with the automated algorithm ECLIPSR (see
https://github.com/LucIJspeert/eclipsr). This also contains the same
TIC columns as the OBA_catalogue and the two Simbad columns. The
remaining columns contain output of the light curve analysis, both
from the ECLIPSR algorithm and the manual inspection.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
oba-cat.dat 503 189981 All-sky sample of OBA-type stars catalog
eb-cat.dat 777 3425 Eclipsing binaries catalog
(corrected version, 24-Jul-2024)
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See also:
IV/38 : TESS Input Catalog - v8.0 (TIC-8) (Stassun+, 2019)
Byte-by-byte Description of file: oba-cat.dat
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Bytes Format Units Label Explanations
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1- 9 I9 --- TIC TESS Input Catalog identification number
(TIC_ID)
11- 32 F22.18 deg RAdeg Right ascension (epoch J2000) (ra)
34- 56 F23.19 deg DEdeg Declination (epoch J2000) (dec)
58- 79 F22.18 deg GLON Galactic longitude (gallong)
81-102 E22.18 deg GLAT Galactic latitude (gallat)
104-125 F22.18 deg ELON Ecliptic longitude (eclong)
127-149 E23.18 deg ELAT Ecliptic latitude (eclat)
151-170 F20.17 mag Jmag J band magnitude (Jmag)
172-191 F20.18 mag e_Jmag ? J band magnitude error (e_Jmag)
193-212 F20.17 mag Hmag H band magnitude (Hmag)
214-233 F20.18 mag e_Hmag ? H band magnitude error (e_Hmag)
235-253 F19.16 mag Kmag K band magnitude (Kmag)
255-274 F20.18 mag e_Kmag ? K band magnitude error (e_Kmag)
276-294 F19.16 mag Gmag ? Gaia (G) magnitude (GAIAmag)
296-317 F22.20 mag e_Gmag ? Gaia (G) magnitude error (e_GAIAmag)
319-337 F19.16 mag Tmag TESS (T) magnitude (Tmag)
339-360 F22.19 mag e_Tmag ? TESS (T) magnitude error (e_Tmag)
362-366 A5 --- LumClass ? luminosity class (lumclass) (1)
368-386 F19.16 mag BPmag ? Gaia BP (blue) magnitude (gaiabp)
388-409 F22.20 mag e_BPmag ? Gaia BP (blue) magnitude error (e_gaiabp)
411-429 F19.16 mag RPmag ? Gaia RP (red) magnitude (gaiarp)
431-452 E22.18 mag e_RPmag ? Gaia RP (red) magnitude error (e_gaiarp)
454-455 I2 --- WDFlag [-1/0] white dwarf flag (wdflag) (2)
457-475 A19 --- SimbadOtype Simbad object type (simbad_otype)
477-503 A27 --- SimbadSptype Simbad spectral type (simbad_sptype)
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Note (1): LumClass is DWARF or unknown in this case, by design.
Note (2): WDFlag is either -1, 0 or unkown in this case, by design.
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Byte-by-byte Description of file: eb-cat.dat
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Bytes Format Units Label Explanations
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1- 9 I9 --- TIC TESS Input Catalog number (TIC_ID)
11- 30 F20.16 deg RAdeg right ascension (epoch J2000) (ra)
32- 53 F22.18 deg DEdeg Declination (epoch J2000) (dec)
55- 76 F22.18 deg GLON Galactic longitude (gallong)
78- 99 F22.18 deg GLAT Galactic latitude (gallat)
101-122 F22.18 deg ELON Ecliptic longitude (eclong)
124-143 F20.16 deg ELAT Ecliptic latitude (eclat)
145-163 F19.16 mag Jmag J band magnitude (Jmag)
165-184 F20.18 mag e_Jmag ? J band magnitude error (e_Jmag)
186-204 F19.16 mag Hmag H band magnitude (Hmag)
206-225 F20.18 mag e_Hmag ? H band magnitude error (e_Hmag)
227-245 F19.16 mag Kmag K band magnitude (Kmag)
247-266 F20.18 mag e_Kmag ? K band magnitude error (e_Kmag)
268-286 F19.16 mag Gmag ? Gaia (G) magnitude (GAIAmag)
288-309 F22.20 mag e_Gmag ? Gaia (G) magnitude error (e_GAIAmag)
311-329 F19.16 mag Tmag TESS (T) magnitude (Tmag)
331-351 F21.19 mag e_Tmag ? TESS (T) magnitude error (e_Tmag)
353-357 A5 --- LumClass ? luminosity class (lumclass) (1)
359-377 F19.16 mag BPmag ? Gaia BP (blue) magnitude (gaiabp)
379-400 F22.20 mag e_BPmag ? Gaia BP (blue) magnitude error (e_gaiabp)
402-420 F19.16 mag RPmag ? Gaia RP (red) magnitude (gaiarp)
422-443 F22.20 mag e_RPmag ? Gaia RP (red) magnitude error (e_gaiarp)
445-446 I2 --- WDFlag [-1/0] White dwarf flag (wdflag) (2)
448-460 A13 --- SimbadOtype Simbad object type (simbad_otype)
462-481 A20 --- SimbadSptype Simbad spectral type (simbad_sptype)
483-501 F19.13 --- tsupcon Time of superior conjunction (midpoint of
primary eclipse) (TESS BJD = BJD-2457000)
(t_supcon) (3)
503-523 F21.17 d eclPer Eclipse signal period (3) (eclipse_period)
525-543 F19.17 --- eclScore [0/1] Score value by ECLIPSR
(see documentation) (eclipse_score) (3)
545-566 F22.19 --- DepthP ?=-1 Average depth of the primary eclipses
(depthavgprim) (3)
568-589 E22.18 --- s_DepthP ?=-1 Standard deviation of the depths of
the primary eclipses (depthstdprim) (3)
591-613 F23.20 --- DepthS ?=-1 Average depth of the secondary
eclipses (3) (depthavgsec) (3)
615-636 E22.18 --- s_DepthS ?=-1 Standard deviation of the depths of
the secondary eclipses (depthstdsec) (3)
638-658 F21.18 d WidthP ?=-1 Average width of the primary eclipses
(widthavgprim) (3)
660-681 E22.18 d s_WidthP ?=-1 Standard deviation of the widths of
the primary eclipses (widthstdprim) (3)
683-703 F21.18 d WidthS ?=-1 Average width of the secondary
eclipses (widthavgsec) (3)
705-726 E22.18 d s_WidthS ?=-1 Standard deviation of the widths of
the secondary eclipses (widthstdsec) (3)
728-745 F18.13 --- tsupconT ?=0 if additional eclipse signal found,
this is t_supcon of that signal
(0 otherwise) (tsupcontriple) (3)
747-765 F19.16 d eclPerT ?=0 if additional eclipse signal found,
this is the eclipse_period of that signal
(0 otherwise) (eclperiodtriple) (3)
767 I1 --- FlagS [0/1] Boolean flag indicating the presence
of secondary eclipses (flag_secondary) (4)
769 I1 --- FlagVar [0/1] Boolean flag indicating possible
intrinsic variability
(flag_variability) (4)
771 I1 --- FlagCont [0/1] Boolean flag indicating possible
contact binary (flag_contact) (4)
773 I1 --- FlagHeart [0/1] Boolean flag indicating possible
heartbeat signal (flag_heartbeat) (4)
775-777 I3 --- dupl-group Number indicating to which group of
duplicate EB signals the entry belongs
(duplicate_group)
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Note (1): LumClass is DWARF or unknown in this case, by design.
Note (2): WDFlag is either -1 or 0 in this case, by design.
Note (3): In the 13 columns from t_supcon to eclperiodtriple, values of -1
indicate that the particular measurement was impossible due to
insufficient data, usually because only one eclipse was present.
Note (4): The boolean flag descriptions use the term 'possible' to indicate
that caution has to be taken when using these. It is discouraged
to use them at face value, and encouraged to independently validate
these markers.
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Acknowledgements:
Luc IJspeert, luc.ijspeert(at)kuleuven.be
History:
19-Aug-2021: on-line version
24-Jul-2024: corrected version fo eb-cat.dat
(End) Luc IJspeert [KU Leuven], Patricia Vannier [CDS] 28-Jul-2021