discov_num |
notes |
refcode |
STF2272 |
70 Oph = p Oph. A complicated multiple system with high proper motion, |
|
|
which has led to some confusion in component identification. A 1924 |
|
|
measure by Burton supposedly of AW was not to the same W component as |
Btn1929b |
|
measured in earlier VW observations. The Burton secondary is now named |
|
|
Y. Similarly, See supposedly measured the BR pair; this pair is now |
See1911 |
|
labelled BZ. |
|
|
A component is 70 Oph. |
|
|
CHARA Array Limb-darkened diameter of A,B: |
CIA2012f |
|
R = 0.8310 +/- 0.0044, 0.6697 +/- 0.0089 \rsun, |
|
|
L = 0.53 +/- 0.02, 0.15 +/- 0.02 \lsun, |
|
|
Teff = 5407 +/- 52, 4393 +/- 149 K, M = 0.846, 0.698 \msun. |
|
|
Spectral types K0V,K4V. Proper motions of A and B are (+276,-1092) and |
|
|
(+442,-1253), respectively. Proper motion of other components follow: |
|
|
C : -019-012 D : -002+002 R : -007-007 |
|
|
S : +005-004 T : +001-006 U : -013-010 |
|
|
V : +002-014 Y : -023-028 Z : -022+007 |
|
|
The existence of a third body, for which orbits have been computed, is |
|
|
now generally discounted as the strong photographic coverage fails to |
|
|
show any such variation. Batten & van Dessel (1976) discuss the radial |
Bte1976 |
|
velocities. |
|
|
Pourbaix gives combined solution for this resolved SB2, yielding |
|
|
orbital parallaxes and component masses. |
Pbx2000b |
|
1995.559: Absolute quadrant determined by triple-correlation technique |
Pru2002b |
|
AB: H 2 4. |
MEv2010 |
|
AB: Additional notes may be found in Simonov (1937) and |
Smw1937 |
|
Fatou (1941). |
Fat1941 |
|
AB: Malkov et al. (2012) derive dynamical, photometric, and |
|
|
spectroscopic masses 1.60 +/- 0.22, 1.61, and 1.56 Msun, respectively. |
Mlk2012 |
|
AC, AD, AR, AS, AT, AU, AV: Optical pairs, based on study of relative |
|
|
motion of components using the method of apparent motion parameters. |
Kiy2008 |
|
From their combined speckle/spectroscopic solution, Eggenberger et al. |
Egn2008 |
|
(2008) derive masses 0.89 +/- 0.02 and 0.73 +/- 0.01 Msun and a |
|
|
parallax of 194.2 +/- 1.2 mas. Adopting both asteroseismic and |
|
|
non-asteroseismic observational constraints with several models, they |
|
|
derive an age of 6.2 +/- 1.0 Gyr, an initial helium mass fraction Y = |
|
|
0.266 +/- 0.015, and an initial metallicity (Z/X) = 0.0300 +/- 0.0025. |
|
|
AS: Additional notes may be found in Burnham (1894). |
Bu_1894 |
|
AR, AT, AU, AV, BR: Rectilinear solutions by Hurowitz et al. (2014). |
USN2014b |
refcode |
metd |
author |
reference |
Bte1976 |
- |
Batten, A.H., & van Dessel |
1976PDAO...14..345B |
Bte1976 |
|
Pub. DAO 14, 345, 1976 |
|
Btn1929b |
Ma j |
Burton, H.E. |
1929PUSNO..12..235. |
Btn1929b |
|
Pub. USNO 12, 235, 1929 |
|
Bu_1894 |
Ma j |
Burnham, S.W. |
1894PLicO...2....3B |
Bu_1894 |
|
Pub. Lick Obs. 2, 3, 1894 (includes most data from Bu_1893a) |
1893AN....131..329B |
CIA2012f |
not j |
Boyajian, T.S., von Braun, K., van Belle, G., McAlister, H.A., ten Brummelaar, |
2012ApJ...757..112B |
CIA2012f |
|
T.A., Kane, S.R., Muirhead, P.S., Jones, J., White, R., Schaefer, G., Ciardi, D., |
. |
CIA2012f |
|
Henry, T., Lopez-Morales, M., Ridgway, S., Gies, D., Jao, W.-C., Rojas-Ayala, B., |
. |
CIA2012f |
|
Parks, J.R., Sturmann, L., Sturmann, J., Turner, N.H., Farrington, C., Goldfinger, |
. |
CIA2012f |
|
P.J. & Berger, D.H. |
|
CIA2012f |
|
ApJ 757, 112, 2012 |
. |
Egn2008 |
orb - |
Eggenberger, P., Miglio, A., Carrier, F., Fernandes, J., & Santos, N.C. |
2008A&A...482..631E |
Egn2008 |
|
A&A 482, 631, 2008 |
|
Fat1941 |
Ma - |
Fatou, P. |
1941JO.....24...29F |
Fat1941 |
|
J. Obs. 24, 29, 1941 |
|
Kiy2008 |
- |
Kiyaeva, O.V., Kiselev, A.A. & Izmailov, I.S. |
2008SvAL...32..405K |
Kiy2008 |
|
SvAL 34, 405, 2008 |
|
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 |
|
Pbx2000b |
orb - |
Pourbaix, D. |
2000A&AS..145..215P |
Pbx2000b |
|
A&AS 145, 215, 2000 |
|
Pru2002b |
S j |
Prieur, J.-L., Koechlin, L., Ginestet, N., Carquillat, J.-M., Aristidi, E., |
2002ApJS..142...95P |
Pru2002b |
|
Scardia, M., Arnold, L., Avila, R., et al. |
|
Pru2002b |
|
ApJS 142, 95, 2002 |
|
See1911 |
Ma j |
See, T.J.J. |
. |
See1911 |
|
Pub. USNO 6, A117, 1911 |
|
Smw1937 |
Ma - |
Simonov, G.V. |
1938VeBB....5.....S |
Smw1937 |
|
Pub. Berlin Babelsberg Obs. 11, Pt.5, 1937 |
|
USN2014b |
lin - |
Hurowitz, J.L., Hartkopf, W.I., & Mason, B.D. |
2014IAUDS.183....1H |
USN2014b |
|
Inf. Circ. 183, 1, 2014 |
|