discov_num |
notes |
refcode |
STF1523 |
xi UMa = 53 UMa = Alula Australis. A is known to have an unseen |
|
|
companion, P = 1.83y. B is a spectroscopic binary. The first binary |
|
|
star orbit was computed by Savary, a "librarian-observer" at Paris |
Sav1830 |
|
Observatory giving courses in "social arithmetic," i.e., statistics. |
|
|
Spectral types and masses of components assigned by ten Brummelaar et |
|
|
al., based on adaptive optics observations. |
TtB2000 |
|
Preliminary Keplerian AB 2-orbit model by Soderhjelm (1999) gives |
Sod1999 |
|
good solution (failure in HIP). |
|
|
Many-body perturbations observable but not yet studied. Cf. Aa,Bb |
|
|
analysis in Mason et al. (1995) |
Msn1995 |
|
Both orbits are visual and spectroscopic. The orbit of the visible |
|
|
AB pair includes the secular perturbations in inclination, node, |
|
|
longitude of periastron, and K. Star B is also SB1, P = 3.98 d. |
|
|
The short-period pair has been resolved by infrared speckle |
|
|
interferometry |
Mcy1983 |
|
See Baize & Petit (1989) catalog of doubles with variable component. |
Baz1989d |
|
HR 4375 (A component of STF1523) was misidentified as HR 4374 (B |
|
|
component) in McAlister (1978). |
McA1978c |
|
An orbital analysis of xi UMa, including the AB pair, the astrometric |
|
|
companion, and the newly-discovered Bc companion, has been published |
|
|
by Mason et al. (1995). |
Msn1995 |
|
AB: H 1 2. |
MEv2010 |
CHR 178 |
Bb. Abt & Biggs (1972) note variable RV. |
AbH1972 |
|
Given the typical lack of accuracy associated with astrometric orbits |
Tok2010b |
|
it is possible that in the doubling of peaks CHR 178 is actually the |
|
|
known Aa,Ab observing when the faint Ab was flaring. In this |
|
|
interpretation, the second elongated observation of CHR 178 is assumed |
|
|
to be false. |
|
WTE 1 |
AD: Faint T8.5 brown dwarf companion at separation ~4000au exhibits |
|
|
common proper motion. IR luminosity and color suggest that mass of |
|
|
companion 14 and 38 Mjup for system ages 2 and 8 Gyr, respectively. |
WtE2013H |
refcode |
metd |
author |
reference |
AbH1972 |
- |
Abt. H.A. & Biggs, E.S. |
1972bsrv.book.....A |
AbH1972 |
|
Bibliography of Stellar Radial Velocities |
|
Baz1989d |
- |
Baize, P. & Petit, M. |
1989A&AS...77..497B |
Baz1989d |
|
A&AS 77, 497, 1989 |
|
McA1978c |
Sc j |
McAlister, H.A. |
1978PASP...90..288M |
McA1978c |
|
PASP 90, 288, 1978 |
|
Mcy1983 |
Si - |
McCarthy, D.W. |
1983nssl.conf..107M |
Mcy1983 |
+C |
IAU Colloq 76, 107, 1983 |
|
MEv2010 |
- |
MacEvoy, B. |
................... |
MEv2010 |
|
private communication, 2010 (see http://www.handprint.com/ASTRO/index.html) |
|
Msn1995 |
Sc j |
Mason, B.D., McAlister, H.A., Hartkopf, W.I., & Shara, M.M. |
1995AJ....109..332M |
Msn1995 |
+orb |
AJ 109, 332, 1995 |
|
Sav1830 |
orb - |
Savary |
. |
Sav1830 |
|
Conn. des Temps, 1830 |
|
Sod1999 |
orb - |
Soderhjelm, S. |
1999A&A...341..121S |
Sod1999 |
|
A&A 341, 121, 1999 |
|
Tok2010b |
S - |
Tokovinin, A. |
................... |
Tok2010b |
|
private communication |
|
TtB2000 |
Ac j |
ten Brummelaar, T.A., Mason, B.D., McAlister, H.A., Roberts, L.C., Jr., |
2000AJ....119.2403T |
TtB2000 |
|
Turner, N.H., Hartkopf, W.I., & Bagnuolo, W.G., Jr. |
|
TtB2000 |
|
AJ 119, 2403, 2000 (magnitude differences from Mt. Wilson AO) |
|
idgroup |
discov |
author |
1 |
CHR |
Center for High Ang. Res. Astronomy (speckle interferometry systems) |
3 |
POP |
Popovic, G.M. |
132 |
POP |
Popovic, G.M. (Cvetkovic, Z., Pavlovic, R., Strigachev, A., Novakovic, B., & |
132 |
POP |
Popovic, G.M.) |
133 |
STF |
Struve, F.G.W. |
166 |
WTE |
Wright, E.L., Skrutskie, M.F., Kirkpatrick, J.D., Gelino, C.R., Griffith, R.L., |
166 |
WTE |
Marsh, K.A., Jarrett, T., Nelson, M.J., Borish, H.J., Mace, G., Mainzer, A.K., |
166 |
WTE |
Eisenhardt, P.R., et al. |