J/MNRAS/479/5491 Absolute parameters of 509 main-sequence stars (Eker+, 2018)
Interrelated main-sequence mass-luminosity, mass-radius, and mass-effective
temperature relations.
Eker Z., Bakis V., Bilir S., Soydugan F., Steer I., Soydugan E., Bakis H.,
Alicavus F., Aslan G., Alpsoy M.
<Mon. Not. R. Astron. Soc., 479, 5491-5511 (2018)>
=2018MNRAS.479.5491E 2018MNRAS.479.5491E (SIMBAD/NED BibCode)
ADC_Keywords: Binaries, eclipsing ; Stars, masses ; Effective temperatures ;
Stars, diameters
Keywords: binaries: eclipsing - binaries: spectroscopic - catalogs -
stars: fundamental parameters
Abstract:
Absolute parameters of 509 main-sequence stars selected from the
components of detached eclipsing spectroscopic binaries in the solar
neighbourhood are used to study mass-luminosity, mass-radius, and
mass-effective temperature relations (MLR, MRR, and MTR). The MLR
function is found better if expressed by a six-piece classical MLR
(L∝Mα) rather than a fifth or a sixth degree
polynomial within the mass range of 0.179≤M/M☉≤31. The break
points separating the mass ranges with classical MLR do not appear to
us to be arbitrary. Instead, the data indicate abrupt changes along
the mass axis in the mean energy generation per unit of stellar mass.
Unlike the MLR function, the MRR and MTR functions cannot be
determined over the full range of masses. A single-piece MRR function
is calibrated from the radii of stars with M≤1.5M☉, while a
second single-piece MTR function is found for stars with
M>1.5M☉. The missing part of the MRR is computed from the MLR
and MTR, while the missing part of the MTR is computed from the MLR
and MRR.
As a result, we have interrelated the MLR, MRR, and MTR, which are
useful in determining the typical absolute physical parameters of
main-sequence stars of given masses. These functions are also useful
to estimate typical absolute physical parameters from typical
Teff values. Thus, we were able to estimate the typical absolute
physical parameters of main-sequence stars observed in the Sejong Open
cluster Survey, based on that survey's published values for Teff.
Since typical absolute physical parameters of main-sequence stars
cannot normally be determined in such photometric surveys, the
interrelated functions are shown to be useful to compute such missing
parameters from similar surveys.
Description:
The primary data source of this study is the updated "Catalog of
Stellar Parameters from the Detached Double-Lined Eclipsing Binaries
in the Milky Way" by Eker et al. (2014, Cat. J/other/PASA/31.24). The
older version, which provided parameters published up to 2013 January
2, was updated to include parameters published up to 2017 January 2.
The number of detached double-lined eclipsing binaries increased from
257 to 319, even after removing the three systems (GZ Leo, DH Cep,
NSVS 01031772), since they were found not fitting to the criteria of
Eker et al. (2014, Cat. J/other/PASA/31.24). In all, therefore, 65 new
systems were included, while masses (M), radii (R), and effective
temperatures (Teff) for 33 systems in the older version were renewed
with the new values published after 2013 January and up to 2017
January.
The total number of stars is now 639, when the components of the
binaries are counted separately. The number is not even because one of
the new systems (TYC 6212-1273-1) is an eclipsing detached
spectroscopic triple (SB3). With 125 new stars added to the old
version, the number of stars is increased by 24 per cent.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 196 586 The basic stellar parameters and relative errors
of the stars selected for the calibration sample
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See also:
J/other/PASA/31.24 : Milky Way detached double-lined EB catalog (Eker+, 2014)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Seq [1/586] Running sequence number
5- 28 A24 --- Name Star name
31 A1 --- m_Name [ps] Binary component (primary or secondary)
34- 35 I2 h RAh Right Ascension (J2000)
37- 38 I2 min RAm Right Ascension (J2000)
40- 44 F5.2 s RAs Right Ascension (J2000)
47 A1 --- DE- Declination sign (J2000)
48- 49 I2 deg DEd Declination (J2000)
51- 52 I2 arcmin DEm Declination (J2000)
54- 58 F5.2 arcsec DEs Declination (J2000)
61- 72 A12 --- Sp Spectral type
73- 91 A19 --- r_Sp Reference BibCode for published quantities
94-100 F7.4 Msun Mass Stellar Mass
102-107 F6.4 --- e_Mass Relative uncertainty in Mass
109-115 F7.4 Rsun Rad Stellar radius R/R☉
117-122 F6.4 --- e_Rad Relative uncertainty in Rad
124-128 F5.3 [cm/s2] logg Surface gravity of the component
131-135 F5.3 [cm/s2] e_logg rms uncertainty on surface gravity of the star
138-156 A19 --- r_Rad Reference BibCode for published quantities
radius, and surface gravity data for the star
160-164 I5 K Teff Published effective temperature
166-169 I4 K e_Teff ? Uncertainty in Teff
173-191 A19 --- r_Teff Reference BibCode for published quantities
194-196 A3 --- Remark Remarks (1)
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Note (1): Remarks as follows:
* = very accurate (M and R errors ≤3%)
** = accurate (M and R errors 3-6%)
*** = less accurate (M and R errors 6-15%)
1 = Discarded because M or R error(s) >15%
2 = Discarded according to the position on M-R diagram (outside the limit
defined by PARSEC models (Bressan12) with 0.008≤Z≤0.004)
3 = Discarded since oversized and hotter than normal main-sequence stars
(Iglesias-Marzoa17) GLB Discarded because of member of a globular cluster
GLB = Discarded because member of a globular cluster
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Acknowledgements:
Selcuk Bilir, sbilir(at)istanbul.edu.tr
(End) Patricia Vannier [CDS] 05-Jun-2019