J/MNRAS/433/1300 HD 165052 radial-velocity measurements (Ferrero+, 2013)
Apsidal motion in massive close binary systems.
I. HD 165052, an extreme case?
Ferrero G., Gamen R., Benvenuto O.G., Fernandez-Lajus E.
<Mon. Not. R. Astron. Soc. 433, 1300 (2013)>
=2013MNRAS.433.1300F 2013MNRAS.433.1300F
ADC_Keywords: Binaries, spectroscopic ; Radial velocities
Keywords: stars: early-type - stars: fundamental parameters - stars: massive -
stars: individual: HD 165052 - binaries: close -
binaries: spectroscopic
Abstract:
We present a new set of radial-velocity measurements of the
spectroscopic binary star HD 165052 obtained by disentangling of
high-resolution optical spectra. The longitude of the periastron
(ϖ=60±2°) shows a variation with respect to previous
studies. We have determined the apsidal motion rate of the system
{dotϖ}=12.1±0.3°/yr, which was used to calculate the
absolute masses of the binary components: M1=22.5±1.0M☉ and
M2=20.5±0.9M☉. Analysing the separated spectra we have
re-classified the components as O7Vz and O7.5Vz stars.
Description:
Radial velocity (RV) measurements of primary (A) and secondary (B)
components of HD 165052 obtained by disentangling method (Gonzalez &
Levato, 2006A&A...448..283G 2006A&A...448..283G). 37 high-resolution spectra were acquired
with: mainly with the REOSC-DC spectrograph at 2.15-m Sahade telescope
(CASLEO, Argentina) between 2008 August and 2010 August; and with the
echelle spectrograph at 2.5-m Du-Pont tel. (LCO, Chile) in May 2010;
and FEROS at 2.2-m tel. (ESO-La Silla, Chile) in 2009 May.
Cross-correlation was calculated over a disjoint sample region
composed of 17 wavelength intervals, each ∼1nm wide, taken around the
spectral lines indicated. RVs measured in this mode are listed as mean
RVs. Subsequently we have defined several sampling regions, each one
around a single spectral line, and computed cross-correlation
separately for each one. These are the RVs listed for each line.
Objects:
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RA (2000) DE Designation(s) (Period)
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18 05 10.55 -24 23 54.9 HD 165052 = HIP 88581 (P=2.95506)
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tableb1.dat 39 92 Radial velocities of HD 165052 previously reported
rv.dat 273 37 Radial velocity measurements of HD 165052 (table B2)
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Byte-by-byte Description of file: tableb1.dat
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Bytes Format Units Label Explanations
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1 A1 --- l_HJD [~] Limit flag on HJD
2- 11 F10.4 d HJD Heliocentric Julian date (HJD-2400000)
13- 18 F6.1 km/s v1 ? Primary velocity
20- 23 F4.1 km/s vs ? Systemic velocity
25- 27 F3.1 km/s e_vs ? rms uncertainty on vs
29- 34 F6.1 km/s v2 ? Secondary velocity
37- 39 A3 --- Ref Reference (1)
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Note (1): References as follows:
H32 = Hayford (1932LicOB..16...53H 1932LicOB..16...53H)
C77 = Conti, Leep & Lorre (1977ApJ...214..759C 1977ApJ...214..759C)
L07 = Linder et al. (2007A&A...474..193L 2007A&A...474..193L)
M78 = Morrison & Conti (1978ApJ...224..558M 1978ApJ...224..558M)
P24 = Plaskett (1924PDAO....2..285P 1924PDAO....2..285P)
S49 = Sanford (1949ApJ...110..117S 1949ApJ...110..117S)
S97 = Stickland et al. (1997Obs...117..295S 1997Obs...117..295S)
W53 = Wilson (1953GCRV..C......0W 1953GCRV..C......0W, Cat. III/21)
A02 = Arias et al. (2002MNRAS.333..202A 2002MNRAS.333..202A)
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Byte-by-byte Description of file: rv.dat
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Bytes Format Units Label Explanations
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1- 12 F12.4 d HJD Heliocentric Julian Date
13- 17 F5.2 --- Phase Orbital phase (1)
18- 24 F7.1 km/s RVA Mean Radial Velocity of primary component
25- 31 F7.1 km/s RVB Mean Radial Velocity of secondary component
32- 35 F4.1 --- W Weight of Mean Radial Velocities in orbital
solution fit
36- 42 F7.1 km/s RVA3819 ?=999.9 Primary HeI 381.9nm radial velocity
43- 49 F7.1 km/s RVB3819 ?=999.9 Secondary HeI 381.9nm radial velocity
50- 56 F7.1 km/s RVA4026 ?=999.9 Primary HeI 402.6nm radial velocity
57- 63 F7.1 km/s RVB4026 ?=999.9 Secondary HeI 402.6nm radial velocity
64- 70 F7.1 km/s RVA4088 ?=999.9 Primary SiIV 408.8nm radial velocity
71- 77 F7.1 km/s RVB4088 ?=999.9 Secondary SiIV 408.8nm radial velocity
78- 84 F7.1 km/s RVA4200 ?=999.9 Primary HeII 420.0nm radial velocity
85- 91 F7.1 km/s RVB4200 ?=999.9 Secondary HeII 420.0nm radial velocity
92- 98 F7.1 km/s RVA4387 ?=999.9 Primary HeI 438.7nm radial velocity
99-105 F7.1 km/s RVB4387 ?=999.9 Secondary HeI 438.7nm radial velocity
106-112 F7.1 km/s RVA4471 ?=999.9 Primary HeI 447.1nm radial velocity
113-119 F7.1 km/s RVB4471 ?=999.9 Secondary HeI 447.1nm radial velocity
120-126 F7.1 km/s RVA4481 ?=999.9 Primary MgII 448.1nm radial velocity
127-133 F7.1 km/s RVB4481 ?=999.9 Secondary MgII 448.1nm radial velocity
134-140 F7.1 km/s RVA4542 ?=999.9 Primary HeII 454.2nm radial velocity
141-147 F7.1 km/s RVB4542 ?=999.9 Secondary HeII 454.2nm radial velocity
148-154 F7.1 km/s RVA4686 ?=999.9 Primary HeII 468.6nm radial velocity
155-161 F7.1 km/s RVB4686 ?=999.9 Secondary HeII 468.6nm radial velocity
162-168 F7.1 km/s RVA4713 ?=999.9 Primary HeI 471.3nm radial velocity
169-175 F7.1 km/s RVB4713 ?=999.9 Secondary HeI 471.3nm radial velocity
176-182 F7.1 km/s RVA4921 ?=999.9 Primary HeI 492.1nm radial velocity
183-189 F7.1 km/s RVB4921 ?=999.9 Secondary HeI 492.1nm radial velocity
190-196 F7.1 km/s RVA5015 ?=999.9 Primary HeI 501.5nm radial velocity
197-203 F7.1 km/s RVB5015 ?=999.9 Secondary HeI 501.5nm radial velocity
204-210 F7.1 km/s RVA5411 ?=999.9 Primary HeII 541.1nm radial velocity
211-217 F7.1 km/s RVB5411 ?=999.9 Secondary HeII 541.1nm radial velocity
218-224 F7.1 km/s RVA5592 ?=999.9 Primary OIII 559.2nm radial velocity
225-231 F7.1 km/s RVB5592 ?=999.9 Secondary OIII 559.2nm radial velocity
232-238 F7.1 km/s RVA5801 ?=999.9 Primary CIV 580.1nm radial velocity
239-245 F7.1 km/s RVB5801 ?=999.9 Secondary CIV 580.1nm radial velocity
246-252 F7.1 km/s RVA5812 ?=999.9 Primary CIV 581.2nm radial velocity
253-259 F7.1 km/s RVB5812 ?=999.9 Secondary CIV 581.2nm radial velocity
260-266 F7.1 km/s RVA5875 ?=999.9 Primary HeI 587.5nm radial velocity
267-273 F7.1 km/s RVB5875 ?=999.9 Secondary HeI 587.5nm radial velocity
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Note (1): We calculate orbital phase using epoch T0=2455050.08 HJD and
period P=2.95506d.
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Acknowledgements:
Gabriel Ferrero, gferrero(at)fcaglp.unlp.edu.ar
History:
* 04-Jul-2013: on-line version of rv.dat (tableb2) file
* 17-Nov-2014: tableb1 added
(End) G. Ferrero [IALP; FCAGLP, UNLP, Argentina], P. Vannier [CDS] 29-May-2013