WDS 19490+1909 AGC 11 AB : NOTES
 
 
discov_num notes refcode
AGC 11 zet Sge = 8 Sge. A is a suspected spectroscopic binary.
Probably quadruple. The fast RV variation found at three
spectrographs, and not explained by the visual motion, suggests a
spectroscopic companion.
AB. A measure on 1980.7256 was incorrectly attributed to ADS 12973 by
McAlister et al. (1983); it actually belongs to HR 7486. McA1983
This is part of a triple system. Finsen's (1937) observations covered Fin1937b
two periods and yield a separation close to this one. BLM1978
Calculated mass sum is 2.23 +/- 0.35 Msun; this is lower than would be
expected for early A stars, perhaps due to parallax error. Mut2010b
AB: Malkov et al. (2012) derive dynamical, photometric, and
spectroscopic masses 2.23 +/- 0.35, 4.39, and 2.19 Msun, respectively. Mlk2012
STF2585 AB,C: H 2 30. MEv2010
 
 
REFERENCES
 
 
refcode metd author reference
BLM1978 S j Morgan, B.L., Beddoes, D.R., Scaddan, R.J. & Dainty, J.C. 1978MNRAS.183..701M
BLM1978 MNRAS 183, 701, 1978
Fin1937b - Finsen, W.S. 1937CiUO...98..359F
Fin1937b Union Obs. Johannesburg Circ. 98, 359, 1937
McA1983 Sc j McAlister, H.A., Hendry, E.M., Hartkopf, W.I., Campbell, B.G., & Fekel, F.C. 1983ApJS...51..309M
McA1983 ApJS 51, 309, 1983
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
Mut2010b Kp - Muterspaugh, M.W., Hartkopf, W.I., Lane. B.F., O'Connell, J., Williamson, M., 2010AJ....140.1623M
Mut2010b Kulkarni, S.R., Konacki, M., Burke, B.F., Colavita, M.M., Shao, M., &
Mut2010b Wiktorowicz, S.J.
Mut2010b AJ 140, 1623, 2010
 
 
DISCOVERER
 
 
idgroup discov author
1 AGC Clark, A.G.
2 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
19490+1909 AGC 11 AB 2001 243 117 0.1 5.64 6.04 A1V NOD 194858.65+190831.1
19490+1909 AGC 11 AB 2004 246 28 0.1 5.64 6.04 A1V NOD 194858.65+190831.1
19490+1909 AGC 11 AB 2007 248 184 0.2 5.64 6.04 A1V NOD 194858.65+190831.1
19490+1909 AGC 11 AB 2010 261 174 0.2 5.64 6.04 A1V NO 194858.65+190831.1

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