2003A&A...403..675O

Query : 2003A&A...403..675O

2003A&A...403..675O - Astronomy and Astrophysics, volume 403675-681 (2003/5-4)

Refinement of third body parameters and new photometric results for the early-type multiple system IU Aurigae.

OZDEMIR S., MAYER P., DRECHSEL H., DEMIRCAN O. and AK H.

Abstract (from CDS):

The massive eclipsing binary system IU Aurigae is re-analyzed in the context of new photometric observations and an improved treatment of its long-term period changes (O-C diagram) derived from new times of minima. The best-fit of the O-C curve reveals that the third component is orbiting around the system with a period of 293.3 days in a highly eccentric orbit (e=0.62). A solution of the most recent UBV light curves obtained during 1997/1998 showed a third light contribution of ≃23% and continuation of the orbital plane precession of IU Aurigae. Since the revised mass of the third component deduced from the analysis of the O-C curve of m3=14.2M☉ would imply a larger fraction of third light than suggested by the value of 23% derived from the light curve analysis, the third body is possibly composed of two components. A q-search test applied to the UBV light curves yields a minimum χ2 value at q=0.67±0.02, which confirms previous photometric and spectroscopic solutions.

Abstract Copyright: ∼

Journal keyword(s): binaries: eclipsing - stars: early-type - stars: individual: IU Aurigae

VizieR on-line data: <Available at CDS (J/A+A/403/675): umag.dat bmag.dat vmag.dat>

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 V* IU Aur SB* 05 27 52.3995663216 +34 46 58.262388600 7.91 8.55 8.37     O9.5V+B0.2V 192 0

Query : 2003A&A...403..675O

Basic data :
V* IU Aur -- Spectroscopic Binary
Other object types: otypes_help 		* (HD,AG,...), ** (1997A&AS,**,...), SB* (2019A&A,SBC7,...), UV (CEL,TD1), EB* (2022yCat), V* (V*), NIR (2MASS)
ICRS coord. (ep=J2000) : 		05 27 52.3995663216 +34 46 58.262388600 (Optical) [ 0.2577 0.2051 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		05 24 32.7937414307 +34 44 31.226999163 [ 0.2577 0.2051 90 ]
Gal coord. (ep=J2000) : 		173.0463115842351 -00.0305615938328 [ 0.2577 0.2051 90 ]
Proper motions mas/yr : 		0.502 -3.523 [0.330 0.244 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) 9.00 [5] / z(~) 0.000030 [0.000017] / cz 9.00 [5.00]
   C 2004A&A...424..727P
Parallaxes (mas): 		0.4786 [0.5765] A 2018yCat.1345....0G
Spectral type: 		O9.5V+B0.2V C 2016MNRAS.459..880M
Angular size (arcmin): 		0.0017 0.0 226 (Opt) D 2001AJ....122.3466M
Fluxes (7) :
U 7.91 [~] D 2003AJ....125.2531R
B 8.55 [0.02] D 2000A&A...355L..27H
V 8.37 [0.01] D 2000A&A...355L..27H
G 8.303410 [0.008831] C 2020yCat.1350....0G
J 7.628 [0.019] C 2003yCat.2246....0C
H 7.604 [0.018] C 2003yCat.2246....0C
K 7.590 [0.018] C 2003yCat.2246....0C
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Identifiers (32) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

HD 35652 Glazar Aur 23 PPM 70395 UCAC4 624-023315
** HDS 721 GSC 02411-01941 SAO 58059 uvby98 100035652
AG+34 573 HGAM 399 SBC7 227 V* IU Aur
ALS 8369 HIC 25565 SBC9 322 WDS J05279+3447AB
BD+34 1051 HIP 25565 TD1 4603 WEB 4962
CEL 711 LS V +34 25 TIC 2940839 [HFE83] 378
GCRV 56161 2MASS J05275239+3446581 TYC 2411-1941-1 Gaia DR2 182856896896621952
GEN# +1.00035652 PMSC 05212+3442 UBV M 10961 Gaia DR3 182856896896621952

References (192 between 1850 and 2026) (Total 192)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Collections of Measurements Description of Measurements

Velocities : 4    Var : 2    Rot : 1    Plx : 3    PM : 4    SpT : 7   

   

External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Link by name to the catalogue in VizieR :

HD 35652 AG+34 573 ALS 8369 BD+34 1051 CEL 711
GSC 02411-01941 HIC 25565 HIP 25565 LS V +34 25 2MASS J05275239+3446581
PPM 70395 SAO 58059 TD1 4603 TYC 2411-1941-1 UCAC4 624-023315
uvby98 100035652 V* IU Aur WDS J05279+3447AB Gaia DR2 182856896896621952 Gaia DR3 182856896896621952

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