WDS 18002+8000 BAG 6 Aa,Ab : NOTES
 
 
discov_num notes refcode
STF2308 AB: LDS1882. HJL 257. Statistically the same parallax within the HJL1986
errors would indicate the components are physical.
Linear elements fit nicely at present, but this is a physical pair and
an orbit can be computed at some future date.
AB: H 4 67. MEv2010
AB: A,B are 2.6 mag above MS, both evolved, both SB systems. Orbital
parallax 23.0+-2.2mas. Masses 1.39,1.30,1.32,1.20. Tok2014d
BAG 6 A: 41 Dra. Spectroscopic binary, P = 1247.2d, with the highest known
eccentricity to date, e = 0.975.
Elements P, T, and e for the Balega et al. (1997) orbit were adopted Bag1997a
from the spectroscopic orbit of Tokovinin (1995). Tok1995b
Combined spectroscopic/speckle solution by Tokovinin et al. (2003), Tok2003
deriving masses (1.28 +/- 0.15, 1.20 +/- 0.14 Msun) and orbital
parallax (23.0 +/- 2.2 mas). Authors note earlier elements and discuss
possibility of orbital evolution.
Effective temperatures for the two components are 6370+/-20 and
6410+/-20K, log g 4.05+/-0.10 and 4.20+/-0.10. Abundances for both
components are very near solar. Bag2005b
Aa,Ab: Malkov et al. (2012) derive dynamical, photometric, and
spectroscopic masses 7.75 +/- 5.22, 3.34, and 2.24 Msun, respectively. Mlk2012
B: 40 Dra = BD+79@570. B is also a spectroscopic binary, P = 10.53d.
 
 
REFERENCES
 
 
refcode metd author reference
Bag1997a S j Balega, I.I., Balega, Yu.Yu., Falcke, H., Osterbart, R., Reinheimer, T., Scholler, 1997SvAL...23..172B
Bag1997a +orb M., & Weigelt, G.
Bag1997a SvAL 23, 172, 1997
Bag2005b orb j Balega, Yu.Yu., Leushin, V.V., & Weigelt, G. 2005ARep...49..217B
Bag2005b +S Astron. Reports 49, 217, 2005
HJL1986 Pa - Halbwachs, J.L. 1986A&AS...66..131H
HJL1986 A&AS 66, 131, 1986
HJL1986 (Possible CPM pairs from AGK2/3. Coarse astrometry, incl. mean 1950 dates, added
HJL1986 only for previously unknown pairs. Table 1: HJL 1 - 326, Table 2: HJL1001 - 1113)
MEv2010 - MacEvoy, B. ...................
MEv2010 private communication, 2010 (see http://www.handprint.com/ASTRO/index.html)
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
Tok1995b orb - Tokovinin, A.A. 1995PAZh...21..286T
Tok1995b Pisma Astron. Zhur. 21, 286, 1995
Tok2003 S j Tokovinin, A.A., Balega, Y.Y., Pluzhnik, E.A., Shatsky, N.I., Gorynya, N.A., & 2003A&A...409..245T
Tok2003 +orb Weigelt, G.
Tok2003 A&A 409, 245, 2003
Tok2014d E2 - Tokovinin, A. 2014AJ....147...86T
Tok2014d AJ 147, 86, 2014
 
 
DISCOVERER
 
 
idgroup discov author
1 STF Struve, F.G.W.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18002+8000 BAG 6 Aa,Ab 2001 29 307 0.1 6.22 6.69 F7V F7V NOD 180009.07+800013.7
18002+8000 BAG 6 Aa,Ab 2007 30 331 0.1 6.22 6.69 F7V F7V NOD 180009.07+800013.7
18002+8000 BAG 6 Aa,Ab 2010 31 325 0.1 6.22 6.69 F7V F7V NOD 180009.07+800013.7
18002+8000 BAG 6 Aa,Ab 2012 31 317 0.1 6.22 6.69 F7V F7V NOD 180009.07+800013.7

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