2005AJ....130.2847T

Query : 2005AJ....130.2847T

2005AJ....130.2847T - Astron. J., 130, 2847-2851 (2005/December-0)

Orbit, dynamical mass, and MK type of visual binary WOR 2.

TAMAZIAN V.S., DOCOBO J.A., MELIKIAN N.D., BALEGA Y.Y. and KARAPETIAN A.A.

Abstract (from CDS):

On the basis of new speckle measurements with the 6 m telescope of the Special Astrophysical Observatory (Russia) and Hipparcos astrometry, an improved orbital solution with a period of P=24.1 yr for the visual binary WOR 2 is obtained. The dynamical mass of the system is 1.40±0.25 M☉. Differential photometry (Δm=0.55 mag) allowed us to estimate the luminosity of individual components (M=+8.0 and +8.6 mag), which in turn led to individual masses of 0.65 and 0.61 M☉, in good agreement with the systemic mass. The slit spectra obtained with the 2.6 m telescope of the Byurakan Astrophysical Observatory (Armenia) show that in the combined light WOR 2 is a K6 dwarf, whereas individually the components according to their luminosities are likely to be K6-K7 and M0 dwarfs. The equivalent width of the Hα absorption line (0.9 Å) is concordant with previous data, indicating the overall stability of this system.

Abstract Copyright: ∼

Journal keyword(s): Astrometry - Stars: Binaries: Visual - stars: individual (WOR 2)

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 BD+31 434 ** 02 28 46.48880 +32 15 34.1555   10.860 9.557 9.230   M0Vp 61 0

Query : 2005AJ....130.2847T

Basic data :
BD+31 434 -- Double or Multiple Star
Other object types: otypes_help 		* (ASCC,BD,...), PM* (2016ApJ,G,...), ** (2002A&A,CCDM,...), NIR (2MASS), MIR (WISEA)
ICRS coord. (ep=J2000) : 		02 28 46.48880 +32 15 34.1555 (Optical) [ 12.57 9.66 90 ] A 2007A&A...474..653V
FK4 coord. (ep=B1950 eq=1950) : 		02 25 45.81954 +32 02 07.1135 [ 12.57 9.66 90 ]
Gal coord. (ep=J2000) : 		145.79534389 -26.25466830 [ 12.57 9.66 90 ]
Proper motions mas/yr : 		446.84 95.53 [1.43 1.10 0] A 2007A&A...474..653V
Radial velocity / Redshift / cz : 		V(km/s) -6.917 [0.0024] / z(spectroscopic) -0.000023 [0.000000] / cz -6.92 [0.00]
   (Opt) A 2018A&A...616A...7S
Parallaxes (mas): 		38.21 [1.61] A 2007A&A...474..653V
Spectral type: 		M0Vp C 1956AJ.....61..201V
Angular size (arcmin): 		0.0050 0.0 120 (Opt) D 2001AJ....122.3466M
Fluxes (10) :
B 10.860 [0.04] D 2012yCat.1322....0Z
V 9.557 [0.09] D 2012yCat.1322....0Z
R 9.230 [0.04] D 2012yCat.1322....0Z
G 9.122619 [0.017246] C 2022yCat.1355....0G
J 6.888 [0.032] C 2003yCat.2246....0C
H 6.238 [0.017] C 2003yCat.2246....0C
K 6.062 [0.018] C 2003yCat.2246....0C
g 10.359 [0.01] D 2012yCat.1322....0Z
r 9.353 [0.06] D 2012yCat.1322....0Z
i 8.416 [0.07] D 2012yCat.1322....0Z
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Identifiers (35) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

CCDM J02288+3216AB GEN# +0.03100434 MCC 393 VVO 3
** WOR 2 G 74-27 NLTT 8089 WDS J02288+3215AB
ASCC 556336 GJ 99 PM J02287+3215 WEB 2409
BD+31 434 HIC 11542 StKM 2-211 WISEA J022846.84+321535.2
CNS5 631 HIP 11542 TIC 286177540 [RHG95] 439
CSI+31 434 1 IDS 02228+3148 AB TYC 2327-400-1 [RHG95] 440
CSI+31 434 2 LSPM J0228+3215 UCAC2 43048141 Gaia DR2 134268790867375616
CSI+31 434 3 LTT 17374 UCAC4 612-006979 Gaia DR3 134268790867375616
GCRV 53064 2MASS J02284642+3215339 USNO-B1.0 1222-00039432

References (61 between 1850 and 2026) (Total 61)
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 : 6    Fe/H : 1    Plx : 2    PM : 6    SpT : 5   

   

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Link by name to the catalogue in VizieR :

CCDM J02288+3216AB BD+31 434 G 74-27 GJ 99 HIC 11542
HIP 11542 LSPM J0228+3215 2MASS J02284642+3215339 NLTT 8089 TYC 2327-400-1
UCAC2 43048141 UCAC4 612-006979 USNO-B1.0 1222-00039432 WDS J02288+3215AB WISEA J022846.84+321535.2
Gaia DR2 134268790867375616 Gaia DR3 134268790867375616

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