J/A+A/690/A306 YMDB catalog (Martin-Ravelo+, 2024)
The YMDB catalog: Young massive detached binaries for the determination of
high-precision absolute stellar parameters.
Martin-Ravelo P., Gamen R., Arias J.I., Chene A.-N., Barba H.
<Astron. Astrophys. 690, A306 (2024)>
=2024A&A...690A.306M 2024A&A...690A.306M (SIMBAD/NED BibCode)
ADC_Keywords: Binaries, eclipsing ; Binaries, spectroscopic ; Photometry ;
Optical
Keywords: catalogs - binaries: eclipsing - binaries: spectroscopic -
stars: early-type - stars: fundamental parameters - stars: massive
Abstract:
Massive stars play a crucial role in the cosmic dynamics and chemical
evolution of galaxies. Despite their significance, our understanding
of their evolution and properties remains limited. An accurate
determination of stellar parameters, such as the mass and radius, is
essential for advancing our knowledge. Detached eclipsing binaries
(DEBs) are particularly valuable for these determinations due to the
minimal interaction between their stellar components, allowing for
precise measurements.
This study aims to introduce the Young Massive Detached Binary (YMDB)
catalog, designed to address the gap in the highprecision absolute
parameter determination for young massive stars. By focusing on DEBs
within the spectral range O9-B1, this catalog seeks to provide a
reliable database for future astronomical studies and improve our
understanding of massive star evolution.
We conducted a photometric analysis of 87 young massive stars in
detached eclipsing systems using TESS light curves (LCs) that were
processed through a custom pipeline. This analysis involved
determining the amplitude of magnitude variations, orbital periods,
times of minima, eccentricities, and the presence of apsidal motion
and heartbeat phenomena. A thorough literature review was performed to
obtain MK spectral classifications. We performed our own spectral
classification of 19 systems to support the sample where a new
classification was lacking or inconclusive.
The analysis identified 20 previously unreported binary systems, with
13 newly recognized as variable stars. Among the 87 stars examined, 30
are confirmed as YMDB members, and 25 are candidates pending spectral
classification. The exclusion of the remaining 32 stars is attributed
to unsuitable spectral types or their nondetached binary nature.
Notable findings include the identification of new LC classifications,
eccentricities in 13 systems, and heartbeat phenomena in several
targets.
The YMDB catalog oers a resource of high-quality LCs and reliable
stellar classifications, serving as a valuable tool for the
astronomical community.
Description:
The primary results of this study are documented in Table 2,
which lists the 30 confirmed members of the YMDB. These systems
feature detached LCs and have at least one component with a spectral
classification within the specified range. For the 25 systems that
show potential yet require further spectroscopic verification, details
can be found in Table 3. The 32 systems that do not qualify for the
catalog due to nondetached configurations or incompatible spectral
types are included in Table 4
lc contains the light curve files.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 583 30 Confirmed systems in the YMDB catalog
table2.dat 592 25 Candidates systems in the YMDB catalog
table3.dat 582 32 Unqualified systems in the YMDB catalog
lc/* . 87 Individual light curves
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Byte-by-byte Description of file: table1.dat table2.dat table3.dat
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Bytes Format Units Label Explanations
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1- 23 A23 --- Name SIMBAD main ID for the star
25- 26 I2 h RAh Right ascension (J2000) from SIMBAD
27 A1 --- --- [:]
28- 29 I2 min RAm Right ascension (J2000) from SIMBAD
30 A1 --- --- [:]
31- 35 F5.2 s RAs Right ascension (J2000) from SIMBAD
37 A1 --- DE- Declination sign (J2000) from SIMBAD
38- 39 I2 deg DEd Declination (J2000) from SIMBAD
40 A1 --- --- [:]
41- 42 I2 arcmin DEm Declination (J2000) from SIMBAD
43 A1 --- --- [:]
44- 48 F5.2 arcsec DEs Declination (J2000) from SIMBAD
50- 54 F5.2 mag Vmag ? V magnitude from SIMBAD,
unless noted otherwise
56- 64 A9 --- n_Vmag Reference for Vmag if not Simbad
66- 70 F5.3 mag Deltamag Maximum variation in magnitude observed in
the light curve (1)
71 A1 --- u_Deltamag Uncertainty flag on Deltamag
72 A1 --- --- [/]
73- 77 F5.3 mag Deltamag2 ? Second value of Deltamag
78 A1 --- u_Deltamag2 Uncertainty flag on Deltamag2
81- 88 F8.5 d Per Orbital Period of the binary system
90- 96 F7.5 d e_Per Orbital Period error of the binary system
98-106 F9.4 d T0 Time (BTJD, TESS Barycentric Julian Day) of
minimum light for the primary eclipse
(BJD-245000)
108-114 F7.5 d e_T0 Time error (BTJD) for T0
116-117 A2 --- Apsidal [1: ] Flag indicating whether apsidal motion
appears present in the target's LC
119-123 A5 --- MultiP [01:/ ] Flag indicating whether non-orbital
variability appears present in the
target's LC
125-129 A5 --- HB [01:/ ] Flag indicating whether a Heartbeat
feature is present in the target's LC
131-135 A5 --- e [01:/- ] Flag indicating whether eccentricity
is evident in the target's LC
137-145 A9 --- ET Eclipsing type (2)
147-161 A15 --- SpType1 MK Spectral classifications for the primary
component
163-172 A10 --- SpType2 MK Spectral classifications for the secondary
component
174-216 A43 --- r_SpType1 Source for SpType1 (3)
218-260 A43 --- r_SpType2 Source for SpType2 (3)
262-564 A303 --- Comment Additional comments about the system and
values herein
566-592 A27 --- FileName Name of the file with light curve data in
subdirectory lc
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Note (1): calculated as the difference between the maximum and minimum
brightness levels.
Note (2): EA/EB/EW for Algol, Beta Lyrae, or W Ursa Majoris types, based on
GCVS descriptions. It is followed by 2/1, indicating whether both primary and
secondary eclipses are visible (2) or only one eclipse is visible (1).
A "/" between types indicates multiple discernible variations observed
from the TESS LC
Note (3): tw indicates classifications performed in this work
* indicates significant dispersion among various reliable sources,
without clear consensus
- represents an inability to classify the component
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Byte-by-byte Description of file: lc/*
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Bytes Format Units Label Explanations
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1- 18 F18.13 d Time TESS Barycentric Julian Day (BTJD) of
TESS data (BJD-2450000)
20- 32 F13.5 --- Flux Stellar flux of the TESS Target Pixel File
(TPF)
34- 45 F12.8 --- e_Flux Statistical uncertainty on the stellar flux
47- 48 I2 --- Sector TESS observing period for data.
50- 72 E23.17 mag mag Normalized magnitude derived from stellar flux
after background subtraction and
corrections for artifacts
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Acknowledgements:
Pablo Martin-Ravelo, pablo.martin.ravelo(at)gmail.com
(End) Patricia Vannier [CDS] 10-Oct-2024