J/ApJS/259/66 Eclipsing quadruple star candidates from TESS (Kostov+, 2022)
Ninety-seven eclipsing quadruple star candidates discovered in TESS full-frame
images.
Kostov V.B., Powell B.P., Rappaport S.A., Borkovits T., Gagliano R.,
Jacobs T.L., Kristiansen M.H., LaCourse D.M., Omohundro M., Orosz J.,
Schmitt A.R., Schwengeler H.M., Terentev I.A., Torres G., Barclay T.,
Friedman A.H., Kruse E., Olmschenk G., Vanderburg A., Welsh W.
<Astrophys. J. Suppl. Ser., 259, 66 (2022)>
=2022ApJS..259...66K 2022ApJS..259...66K
ADC_Keywords: Stars, double and multiple; Binaries, eclipsing; Stars, distances;
Photometry; Optical
Keywords: Multiple stars ; Eclipsing binary stars
Abstract:
We present a catalog of 97 uniformly vetted candidates for quadruple
star systems. The candidates were identified in TESS full-frame image
data from sectors 1-42 through a combination of machine-learning
techniques and visual examination, with major contributions from a
dedicated group of citizen scientists. All targets exhibit two sets of
eclipses with two different periods, both of which pass photocenter
tests confirming that the eclipses are on target. This catalog
outlines the statistical properties of the sample, nearly doubles the
number of known multiply eclipsing quadruple systems, and provides the
basis for detailed future studies of individual systems. Several
important discoveries have already resulted from this effort,
including the first sextuply eclipsing sextuple stellar system and the
first transiting circumbinary planet detected from one sector of TESS
data.
Description:
To study multiple stellar systems, we have been performing a search
for eclipsing binary stars (EBs) utilizing the long-cadence TESS
lightcurves (Kruse et al. 2022, in preparation).
Due to the large pixel size of the TESS photometer (∼20"), false
positives due to nearby field stars are a common occurrence. To
account for this, we evaluate the motion of the measured center of
light during each set of eclipses detected in the lightcurve of each
target. We also take into account the presence of nearby field stars
and their respective magnitude differences with the target star,
contamination ratio according to the TIC where available, and
information from the Gaia EDR3 catalog. In addition, we pursue
follow-up photometry observations for a subset of targets as part of
the TESS Follow-up Observing Program, as well as dedicated
spectroscopy on the 1.5m telescope at the F. L. Whipple Observatory in
Arizona with the Tillinghast Reflector Echelle Spectrograph (TRES).
See Section 3.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 400 196 Paramaters of the quadruple candidates
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See also:
II/287 : Northern Sky Variability Survey (NSVS) (Wozniak+, 2004)
IV/38 : TESS Input Catalog - v8.0 (TIC-8) (Stassun+, 2019)
I/355 : Gaia DR3 Part 1. Main source (Gaia Collaboration, 2022)
I/358 : Gaia DR3 Part 4. Variability (Gaia Collaboration, 2022)
J/ApJS/190/1 : A survey of stellar families (Raghavan+, 2010)
J/MNRAS/428/1656 : Time of minima of HD 181068 (Borkovits+, 2013)
J/ApJ/788/48 : X-ray through NIR photometry of NGC 2617 (Shappee+, 2014)
J/MNRAS/455/4136 : Kepler triples (Borkovits+, 2016)
J/ApJS/235/6 : Updated Multiple Star Catalog (MSC) (Tokovinin, 2018)
J/AJ/157/124 : DAVE. I. Benchmarking K2 vetting tools (Kostov+, 2019)
J/MNRAS/490/3806 : Exoplanets & var. stars in 47 Tuc field (Nardiello+, 2019)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 10 I10 --- TIC [9493888/1337279468] TESS Input Catalog identifier
12- 21 F10.6 deg RAdeg [4/358] Right Ascension in decimal degrees (J2000)
23- 32 F10.6 deg DEdeg [-79.4/79] Declination in decimal degrees (J2000)
34- 39 A6 --- TGV TESS/Goddard/VSG quadruple candidate identifier (1)
41- 59 I19 --- Gaia Gaia EDR3 identifier
61- 65 F5.2 mag Tmag [6.46/14.29] TESS magnitude
67- 71 I5 K Teff [3959/13910]? Composite Effective temperature
73- 80 F8.2 pc Dist [-938.2/20074]? Distance
82 A1 --- m_TIC Binary component identifier
84- 92 F9.6 d Per [0.34/57.4] Orbital period
94-102 F9.4 d BJD [1325.48/2288.22] Barycentric Julian Date, T0;
BJD-2457000
104-109 F6.4 --- Phase [0.16/0.85]? Secondary phase
111-113 I3 10-3 DepP [5/400] Primary eclipse depth; parts-per-thousand
115-117 I3 10-3 DepS [4/325]? Secondary eclipse depth;
in parts per thousand units
119-122 F4.1 h DurP [1.4/12.9]? Primary eclipse duration
124-127 F4.1 h DurS [1.3/18.0]? Secondary eclipse duration
129-400 A272 --- Comm Additional comments for Comp (2)
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Note (1): For convenience, we label the targets as, for example, TGV-1
for "TESS/Goddard/VSG quadruple candidate-1". Hence, the column
contains "TGV-NN" with NN from 1 to 97.
Note (2): Abbreviations are:
ETV = Eclipse-Timing Variations;
LC = lightcurve;
SNR = Signal-to-Noise Ratio;
S32 = Sector 32.
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 18-Jul-2022