J/A+A/539/A139 BVIc light curves of SZ Cam (Tamajo+, 2012)
Asiago eclipsing binaries program.
IV. SZ Camelopardalis, a beta Cephei pulsator in a quadruple, eclipsing system.
Tamajo E., Munari U., Siviero A., Tomasella L., Dallaporta S.
<Astron. Astrophys. 539, A139 (2012)>
=2012A&A...539A.139T 2012A&A...539A.139T
ADC_Keywords: Binaries, eclipsing ; Photometry, UBVRI
Keywords: binaries: close - binaries: eclipsing - stars: fundamental parameters
Abstract:
We present a spectroscopic and photometric analysis of the multiple
system and early-type eclipsing binary SZ Cam (O9 IV + B0.5 V), which
consists of an eclipsing SB2 pair of orbital period P=2.7-days in a
long orbit (∼55yrs) around a non-eclipsing SB1 pair of orbital period
P=2.8-days. We have reconstructed the spectra of the individual
components of SZ Cam from the observed composite spectra using the
technique of spectral disentangling. We used them together with
extensive and accurate BV IC CCD photometry to obtain an orbital
solution. Our photometry revealed the presence of a beta Cep variable in
the SZ Cam hierarchical system, probably located within the
non-eclipsing SB1 pair. The pulsation period is
0.33265±0.00005-days and the observed total amplitude in the B band
is 0.0105±0.0005mag. NLTE analysis of the disentangled spectra
provided atmospheric parameters for all three components, consistent
with those derived from orbital solution.
Objects:
---------------------------------------------
RA (2000) DE Designation(s)
---------------------------------------------
04 07 49.3 +62 19 59 SZ Cam = V* SZ Cam
---------------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table3.dat 68 1517 B, V, Ic photometric data for SZ Cam
--------------------------------------------------------------------------------
See also:
J/A+A/480/465 : V505 Per BV light curves (Tomasella+, 2008)
J/A+A/483/263 : BV light curve of V570 Per (Tomasella+, 2008)
Byte-by-byte Description of file: table3.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 4 I4 yr Date.Y Observation date (Year)
6- 7 I2 --- Date.M Observation date (Month)
9- 16 F8.5 d Date.D Observation date (Day)
19- 31 F13.5 d HJD Heliocentric Julian Date
33- 37 F5.3 mag Vmag Johnson V-band measurement
39- 43 F5.3 mag e_Vmag Error in V-band
45- 49 F5.3 mag B-V Johnson B-V colour index
51- 55 F5.3 mag e_B-V Error of B-V
57- 62 F6.3 mag V-Ic Johnson-Cousins V-Ic colour index
64- 68 F5.3 mag e_V-Ic Error of V-Ic
--------------------------------------------------------------------------------
Acknowledgements:
Ettore Tamajo, etamajo(at)phy.hr
References:
Siveiro et al., Paper I (V432 Aur) 2004A&A...417.1083S 2004A&A...417.1083S
Tomasella et al., Paper II (V505 Per) 2008A&A...480..465T 2008A&A...480..465T, Cat. J/A+A/480/465
Tomasella et al., Paper III (V570 Per) 2008A&A...483..263T 2008A&A...483..263T, Cat. J/A+A/483/263
(End) Patricia Vannier [CDS] 20-Jan-2012