J/other/ARep/69.694 V1141 Cas UBVRI(RI)c light curves (Volkova+, 2025)
Reasons for the Slow Apsidal Rotation of the Massive Eclipsing Star V1141 Cas.
Volkova A.S., Volkov I.M., Naroenkov S.A.
<Astron. Reports, 69, 694-707 (2025)>
=2025ARep...69..694V 2025ARep...69..694V (SIMBAD/NED BibCode)
ADC_Keywords: Binaries, eclipsing ; Photometry, UBVRI
Keywords: eclipsing binary stars - fundamental parameters of stars -
individual stars (V1141 Cas) - photometric observations
Abstract:
High-precision photometric measurements of the unexplored eclipsing
star V1141 Cas (P=6.909d,
V=12.02mag, e=0.37, Sp=B1 V) have shown that the apsidal rotation
velocity, dw/dt=0.127 deg/yr is two times slower than the theoretical
value under the synchronism condition, dw/dt=0.235deg/yr. The physical
parameters of the component stars were obtained: T1=23500±400K,
M1=(8.4±0.5)M☉, R1=(4.24±0.08)R☉, T2=22000±400K,
M2=(7.0±0.5)M☉, R2=(3.38±0.08)R☉. The age of the
system is determined to be 7.5 mln years for a solar chemical
composition. The measured photometric parallax,
pi=0.00031"±0.00004", is very close to the Gaia value. The
interstellar extinction, Av=2.2mag, is 40 percent higher than the
survey's data.
Description:
U, B, V, Rc, R, Ic and I light curves of V501 Mon.
Objects:
---------------------------------------------------
RA (2000) DE Designation(s)
---------------------------------------------------
06 40 41.72 -01 06 39.9 V501 Mon = TIC 53489897
---------------------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
uband.dat 24 650 Johnson U band photometric observations
bband.dat 24 1013 Johnson B band photometric observations
vband.dat 24 1462 Johnson V band photometric observations
rband.dat 24 530 Johnson R band photometric observations
rcband.dat 25 609 Cousins R band photometric observations
iband.dat 24 343 Johnson I band photometric observations
icband.dat 25 616 Cousins I band photometric observations
--------------------------------------------------------------------------------
Byte-by-byte Description of file: *band.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 13 F13.5 d HJD Heliocentric Julian day
16- 22 F7.4 mag dmag Difference of magnitudes between the
observation and mean plateau brightness (1)
24- 25 A2 --- Band Observed band (2)
--------------------------------------------------------------------------------
Note (1): The plateau levels correspond to the magnitudes of the star which
are presented in Table 2 in the article.
Note (2): Bands are Johnson UBVRI and Cousins Rc and Ic.
--------------------------------------------------------------------------------
Acknowledgements:
A.S. Volkova, kravts(at)yandex.ru
Igor Volkov, hwp(at)yandex.ru
(End) Patricia Vannier [CDS] 26-Aug-2025