discov_num |
notes |
refcode |
ANJ 1 |
Aa,Ab: 13 Aur = alp Aur = Capella. Composite spectrum; G5IIIe+G0III. |
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|
aka "The Interferometrist's Friend." |
|
|
Separations from Anderson (1920) have been modified as described in |
AnJ1920 |
|
Merrill (1922). |
Mrr1922 |
|
Measures of Kulagin made by a transit interferometer; quadrants were |
|
|
flipped for all his measures. |
Kul1970 |
|
See discussion in Labeyrie et al. (1974). |
Lab1974 |
|
Combined spectroscopic/interferometric orbit by Heintz (1974): |
Hei1974a |
|
P = 104.0237 d, a = 0.0547", eccentricity neligibly small. Ascending |
|
|
node revised according to Heintz's astrometry |
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|
1969.1348: This position angle was incorrectly published as 303.0 |
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|
degrees in Balega & Tikhonov (1977). |
Bag1977 |
|
1978.915, 1978.929, 1979.082: Observations on these three dates |
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|
overlap in two papers by Koechlin et al. (1979, 1983), with only |
Koe1979 |
|
slight changes. Values from the later paper are given in the catalog. |
Koe1983 |
|
1984.9309, 1985.1062, 1985.1994: Estimates of the position angle and |
|
|
angular separation are deduced from the elongation of the central |
|
|
speckle peak in the autocorrelation. |
Bnu1986 |
|
Colors and spectral types determined by speckle photometry are |
|
|
given by Bagnuolo & Sowell (1988). |
Bgn1988 |
|
See Baize & Petit (1989) catalog of doubles with variable component. |
Baz1989d |
|
Observations by Hummel et al. (1994) were made through narrow band |
MkT1994 |
|
filters centered at 800, 550, and 450 nm. Colors were derived from all |
|
|
1988-1992 data, so are listed at the mean epoch of 1991.9. This paper |
|
|
also includes a new orbit. Finally, errors are given as "error |
|
|
ellipses"; these values are tabulated below. Columns include date |
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|
(BY), major and minor axes of the ellipse (in mas), and ellipse |
|
|
orientation (in degrees). |
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|
1988.7973 0.95 0.11 96. |
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|
1988.8000 0.42 0.03 93.3 |
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|
1988.8028 0.22 0.03 85.7 |
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|
1988.8055 0.15 0.02 88.2 |
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|
1990.9411 0.09 0.02 86.6 |
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|
1990.9548 0.13 0.05 88.6 |
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|
1991.7159 0.73 0.08 124.1 |
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|
1991.7214 0.37 0.06 179.6 |
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|
1991.7241 0.23 0.05 156.5 |
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|
1991.7871 0.07 0.01 93.7 |
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|
1991.8364 0.07 0.02 91.6 |
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|
1991.8665 0.04 0.01 94.5 |
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|
1991.8857 0.06 0.02 88.4 |
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|
1991.8939 0.10 0.05 149.3 |
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|
1991.9021 0.16 0.05 77.9 |
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|
1991.9733 0.10 0.03 87.6 |
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|
1991.9870 0.09 0.02 77.5 |
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|
1992.0006 0.50 0.07 83.0 |
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|
1992.0417 0.24 0.05 73.4 |
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|
1992.0445 0.09 0.02 83.8 |
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|
1992.0691 0.25 0.05 74.6 |
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|
1992.0855 0.22 0.02 93.5 |
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|
1992.0965 0.10 0.02 78.5 |
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|
1992.7399 0.33 0.05 111.1 |
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|
1992.7426 0.42 0.04 118.5 |
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1992.7454 0.21 0.06 110.6 |
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|
1992.7481 0.40 0.09 121.2 |
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|
1992.7508 0.62 0.08 121.3 |
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|
1992.7536 0.71 0.16 103.9 |
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|
1992.7563 0.76 0.12 121.9 |
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|
1992.7755 0.05 0.01 105.9 |
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|
1992.8357 0.19 0.02 118.1 |
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|
1992.8658 0.09 0.04 78.1 |
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|
1992.8658 0.14 0.04 91.8 |
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|
1992.8686 0.09 0.02 69.5 |
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|
1992.8686 0.14 0.07 92.9 |
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|
1992.8823 0.07 0.02 88.8 |
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|
1992.8932 0.11 0.02 116.4 |
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|
1992.9206 0.43 0.07 98.8 |
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|
1992.9452 0.15 0.03 113.0 |
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|
Hipparcos astrometric solution adopted some elements from the orbit of |
HIP1997d |
|
Hummel et al. (1994). |
MkT1994 |
|
Pourbaix gives combined solution for this resolved SB2, yielding |
Pbx2000b |
|
orbital parallaxes and component masses. |
|
|
Branham (2008) derives combined interferometric/spectroscopic orbit, |
Bnh2008 |
|
using a semidefinite programming technique. The resulting masses are |
|
|
3.049 +/- 0.513 and 2.569 +/- 0.432 Msun; he also determines a value |
|
|
for the parallax of 74.85 +/- 1.53 mas. |
|
|
Aa,Ab: Following an extensive review of historical spectroscopic and |
|
|
astrometric measurements of Capella, Torres et al. (2009) derived a |
Trr2009 |
|
new combined-solution orbit, assuming a circular orbit. They determined |
|
|
an orbital parallax of 76.67 +/- 0.17 mas (distance 13.042 +/- |
|
|
0.028 pc), an age of 540-590 Myr, and the following physical |
|
|
parameters for the two components: |
|
|
Mass (Msun): 2.466 +/- 0.018 2.443 +/- 0.013 |
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|
Radius (Rsun): 11.87 0.56 8.75 0.32 |
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|
Teff (K): 4920 70 5680 70 |
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|
Luminosity (Lsun): 79.5 4.8 72.1 3.6 |
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|
Mv (mag): 0.315 0.017 0.186 0.016 |
|
|
Aa,Ab: Weber & Strassmeier (2011) derived new spectroscopic elements, |
WbS2011 |
|
assuming the period determined by Torres et al. (2009). The new |
Trr2009 |
|
solution yielded masses of 2.573 +/- 0.009 and 2.488 +/- 0.008 Msun. |
|
|
Aa,Ab: A combined solution by Torres et al (2015) yields the following |
Trr2015 |
|
physical parameters for Aa and Ab: |
|
|
mass (Msun): 2.5687 +/- 0.0074 2.4828 +/- 0.0067 |
|
|
Teff (K): 4970 50 5730 60 |
|
|
Radius (Rsun): 11.98 0.57 8.83 0.33 |
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|
log g (cgs): 2.691 0.041 2.941 0.032 |
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|
Luminosity (Lsun): 78.7 4.2 72.7 3.6 |
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|
a(AU): 0.74272 +/- 0.00069 |
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|
Distance (pc): 13.159 0.015 |
|
|
Age (Myr): 590-650 |
|
|
[Fe/H}: -0.04 0.06 |
|
HJ 2256 |
AF: H VI 30. |
|
|
AF: Optical pair, based on study of relative motion of the components |
|
|
using the method of apparent motion parameters. |
Kiy2008 |
SHY 23 |
AM: HIP 24608 + HIP 26779. |
|
SHY 23 |
AN: HIP 24608 + HIP 26801. |
|
|
MN is 05413+5329AB. |
Dam2017i |
ST 3 |
Capella HL, the distant (723") double companion to Capella with |
|
|
common proper motion. A premature orbit has been computed. |
|
|
Capella H is variable with a period of about 17.9d and an amplitude |
Skf2019g |
|
amplitude of about 0.03 magnitudes. |
|
HJ 2256 |
AF: H 6 30. |
MEv2010 |
refcode |
metd |
author |
reference |
AnJ1920 |
Jm j |
Anderson, J.A. |
1920ApJ....51..263A |
AnJ1920 |
|
ApJ 51, 263, 1920 |
|
Bag1977 |
S j |
Balega, Y.Y. & Tikhonov, N.A. |
1977SvAL....3..272B |
Bag1977 |
|
SvAL 3, 272, 1977 |
|
Baz1989d |
- |
Baize, P. & Petit, M. |
1989A&AS...77..497B |
Baz1989d |
|
A&AS 77, 497, 1989 |
|
Bgn1988 |
Sc j |
Bagnuolo, W.G. & Sowell, J.R. |
1988AJ.....96.1056B |
Bgn1988 |
|
AJ 96, 1056, 1988 |
|
Bnh2008 |
orb - |
Branham, R.L., Jr. |
2008AJ....136..963B |
Bnh2008 |
|
AJ 136, 963, 2008 |
|
Bnu1986 |
S j |
Bonneau, D., Balega, Y., Blazit, A, Foy, R., Vakili, F., & Vidal, J.L. |
1986A&AS...65...27B |
Bnu1986 |
|
A&AS 65, 27, 1986 |
|
Dam2017i |
H+ j |
Damm, F. |
................... |
Dam2017i |
+E+ |
private communication, email #185, 2017 |
|
Dam2017i |
+P+ |
|
|
Dam2017i |
+C |
|
|
Hei1974a |
orb - |
Heintz, W.D. |
1974ApJ...195..411H |
Hei1974a |
|
ApJ 195, 411, 1974 |
|
HIP1997d |
orb - |
Hipparcos |
1997yCat.1239....0E |
HIP1997d |
|
Hipparcos Catalog, ESA SP-1200, 1997 |
|
HIP1997d |
|
(DMSA/O Orbital Solutions) |
|
Kiy2008 |
- |
Kiyaeva, O.V., Kiselev, A.A. & Izmailov, I.S. |
2008SvAL...32..405K |
Kiy2008 |
|
SvAL 34, 405, 2008 |
|
Koe1979 |
K2 j |
Koechlin, L., Bonneau, D., & Valili, F. |
1979A&A....80L..13K |
Koe1979 |
|
A&A 80, L13, 1979 |
|
Koe1983 |
K2 j |
Koechlin, L., Vakili, F., & Bonneau, D. |
1983LowOB.167..156K |
Koe1983 |
|
IAU Colloq 62, Lowell Obs Bull 167, v 9, #1, 156, 1983 "Current Techniques in |
|
Koe1983 |
|
Double & Multiple Star Research", R.S. Harrington & O.G. Franz, eds. |
|
Kul1970 |
Ku j |
Kulagin, E.S. |
1970SvA....14..445K |
Kul1970 |
|
SvA 14, 445, 1970 (AZh 47, 557, 1970) |
|
Lab1974 |
S j |
Labeyrie, A., Bonneau, D., Stachnik, R.V., & Gezari, D.Y. |
1974ApJ...194L.147L |
Lab1974 |
+orb |
ApJ 194, L147, 1974 |
|
Lab1974 |
|
(data from Hale 5m, KPNO 3.8m, 2.1m. Aperture listed as mean value of 3.6m unless |
|
Lab1974 |
|
specifically given in paper) |
|
MEv2010 |
- |
MacEvoy, B. |
................... |
MEv2010 |
|
private communication, 2010 (see http://www.handprint.com/ASTRO/index.html) |
|
MkT1994 |
Km j |
Hummel, C.A., Armstrong, J.T., Quirrenbach, A., Buscher, D.F., Mozurkewich, D., |
1994AJ....107.1859H |
MkT1994 |
+orb |
Elias, N.M., & Wilson, R.E. |
|
MkT1994 |
|
AJ 107, 1859, 1994 |
|
Mrr1922 |
Jm j |
Merrill, P.W. |
1922ApJ....56...40M |
Mrr1922 |
+orb |
ApJ 56, 40, 1922 |
|
Pbx2000b |
orb - |
Pourbaix, D. |
2000A&AS..145..215P |
Pbx2000b |
|
A&AS 145, 215, 2000 |
|
Skf2019g |
Z j |
Skiff, B.A. |
................... |
Skf2019g |
|
private communication, 2019 (8 October email) |
|
Trr2009 |
orb - |
Torres, G., Claret. A., & Young, P.A. |
2009ApJ...700.1349T |
Trr2009 |
|
ApJ 700, 1349, 2009 |
|
Trr2015 |
orb - |
Torres, G., Claret. A., Pavlovski, K., & Dotter, A. |
2015ApJ...807...26T |
Trr2015 |
|
ApJ 807, 26, 2015 |
|
WbS2011 |
orb - |
Weber, M. & Strassmeier, K.G. |
2011A&A....531A.89W |
WbS2011 |
|
A&A 531, A89, 2011 |
|
idgroup |
discov |
author |
1 |
BAR |
Barnard, E.E. |
114 |
BU |
Burnham, S.W. (BU 1 - 81) |
292 |
FRH |
Furuhjelm, R. |
293 |
HEL |
Helminiak, K., Konacki, M., Kulkarni, S.R., & Eisner, J. |
296 |
HEL |
Helminiak, K.G., Konacki, M., Muterspaugh, M.W., Browne, S.E., Howard, A.W., & |
296 |
HEL |
Kulkarni, S.R. |
297 |
HEL |
Helminiak, K.G., Kuzuhara, M., Mede, K., Brandt, T.D., Kandori, R., Suenaga, T., |
297 |
HEL |
Kusakabe, N., Narita, N., Carson, J., Currie, T., Kudo, T., Hashimoto, J., et al. |
298 |
HJ |
Herschel, J.F.W. |
347 |
SHJ |
South, J. & Herschel, J. |
364 |
SHY |
Shaya, E.J. & Olling, R. |
366 |
SMR |
Schlimmer, J. |
421 |
ST |
Stearns, C.L. |