discov_num |
notes |
refcode |
A 1777 |
65 UMa. The primary is the eclipsing binary DN UMa, |
|
|
See Baize & Petit (1989) catalog of doubles with variable component. |
Baz1989d |
|
Discrepant 1995.3159 speckle measure found not due to a typographical |
Hrt1997 |
|
error in theta, following reexamination of original data by authors. |
|
|
Presumably there was an identification error while pointing telescope, |
|
|
although no probable match to known close pairs in the vicinity has |
|
|
been found. |
|
65 UMa |
After subtracting out the effects of the 118y AB pair, Zasche et al. |
|
|
(2012) find a 640d variation, which they attribute to a closer Aa,Ab |
|
|
pair. The 1.7d eclipsing pair DN UMa, then, is assumed to be Aa1,Aa2. |
|
|
Their analysis determines a distance 234 +/- 29 pc to the system |
|
|
(compared with 212 +/- 30 pc from the revised Hipparcos reduction of |
|
|
van Leeuwen 2007), a and total mass of 8.25 +/- 1.85 Msun. Derived |
vlF2007 |
|
spectral types, masses, and radii of the components are as follows: |
|
|
Aa1 A7 1.74 +/- 0.06 Msun 1.86 +/- 0.08 Rsun |
|
|
Aa2 A7 1.71 0.06 1.81 0.08 |
|
|
Ab A1 2.4 0.4 |
|
|
B 2.4 2.0 |
Zas2012b |
STF1579 |
STTA113 = STFA 20. |
|
|
AB,C: H 1 72. |
MEv2010 |
|
May be a physical septuple: the 1.7d eclipsing pair (2), the 640d |
|
|
spectroscopic component (+1), the 118y resolved pair A 1777 (+1) |
|
|
and the wider cpm pair (+1) STF1579AB,D. STF1579AB,C also has similar |
|
|
proper motion and may be physical and the D component has been split |
|
|
interferometrically (BAG 46Da,Db). |
|
idgroup |
discov |
author |
1 |
A |
Aitken, R.G. |
312 |
BAG |
Balega, Y.Y. & Tikhonov, N.A. |
335 |
BAG |
Balega, I.I., Balega, Y.Y., Belkin, I.N., Maximov, A.F., Orlov, V.G., Pluzhnik, |
335 |
BAG |
E.A., Shkhagosheva, Z.U., & Vasyuk, V.A. |
336 |
BAG |
Balega, I.I., Balega, Yu.Yu., Falcke, H., Osterbart, R., Reinheimer, T., Scholler, |
336 |
BAG |
M., & Weigelt, G. |
341 |
BAG |
Balega, I.I., Balega, Y.Y., Maksimov, A.F., Pluzhnik, E.A., Shkhagosheva, Z.U., & |
341 |
BAG |
Vasyuk, V.A. |
346 |
BAG |
Balega, I.I., Balega, Yu.Yu., Hofmann, K.-H., Maksimov, A.F., Pluzhnik, E.A., |
346 |
BAG |
Schertl, D., Shkhagosheva, Z.U., & Weigelt, G. |
349 |
BAG |
Balega, I.I., Balega, Y.Y., Maksimov, A.F., Pluzhnik, E.A., Schertl, D., |
349 |
BAG |
Shkhagosheva, Z.U., & Weigelt, G. |
352 |
BAG |
Balega, I.I., Balega, Y.Y., Hofmann, K.-H., Pluzhnik, E.A., Schertl, D., |
352 |
BAG |
Shkhagosheva, Z.U., & Weigelt, G. |
355 |
BAG |
Balega, I.I., Balega, Y.Y., Hoffmann, K.-H., Malogolovets, E., Schertl, D., |
355 |
BAG |
Shkhagosheva, Z.U., & Weigelt, G. |
357 |
BAG |
Balega, I.I., Balega, Yu.Yu., Maksimov, A.F., Malogolovets, E.V., Pluzhnik, E.A., |
357 |
BAG |
& Shkhagosheva, Z. |
358 |
BAG |
Balega, Y.Y., Beuzit, J.-L., Delfosse, X., Forveille, T., Perrier, C., Mayor, M., |
358 |
BAG |
Segransan, D., Udry, S., et al. |
359 |
BAG |
Balega, I.I., Balega, Yu.Yu., Maksimov, A.F., Malogolovets, E.V., Rastegaev, D.A., |
359 |
BAG |
Shkhagosheva, Z.U., & Weigelt, G. |
366 |
BAG |
Balega, Yu.Yu., Dyachenko, V.V., Maksimov, A.F., & Malogolovets, E.V., |
366 |
BAG |
Rastegaev, D.A., & Romanyuk, I.I. |
367 |
BAG |
Balega, Yu.Yu., Dyachenko, V.V., Maksimov, A.F., & Malogolovets, E.V., |
367 |
BAG |
Rastegaev, D.A., & Romanyuk, I.I. |
368 |
BAG |
Balega, I.I., Balega, Yu.Yu., Gasanova, L.T., Dyachenko, V.V., Maksimov, A.F., |
368 |
BAG |
Malogolovets, E.V., Rastegaev, D.A., & Shkhagosheva, Z.U. |
371 |
STF |
Struve, F.G.W. |