WDS 04153-0739 STF 518 BE : NOTES
 
 
discov_num notes refcode
STF 518 A: omi 2 Eri = 40 Eri = Keid
LDS 114 = STFB 1. Proper motion of A -2224 -3423.
C is a flare star, DY Eri, and a strong X-ray source.
AE: Optical pair, based on study of relative motion of the components
using the method of apparent motion parameters. Kiy2008
BC: NLTT 12868/12869 Chm2004
BC at 83" is physical, and is a Delta Scuti star showing coronal X-ray
emission.
See Baize & Petit (1989) catalog of doubles with variable component. Baz1989d
HIP 19849. See Allen et al. (2000) for information on metallicity, AlC2000
age, galactic orbital parameters, etc.
BC: Additional notes may be found in Worley (1956). Wor1956b
B: M = 0.575 +/- 0.018 \msun, C: M = 0.2041 +/- 0.0064. Msn2017d
P = 230.09 +/- 0.68 y.
VLTI uniform disk diameter of A: 1.405 +/- 0.038 mas, LTI2009
VLTI limb-darkened disk diameter of A: 1.437 +/- 0.039 mas,
R = 0.770 +/- 0.021 \rsun, Teff = 5269 +/- 35 K,
M = 0.877 +/- 0.044 \msun.
CHARA Array Limb-darkened diameter of A : CIA2012f
R = 0.8061 +/- 0.0036 \rsun, L = 0.40782 +/-0.00319 \lsun,
Teff = 5143 +/- 14 K, M = 0.816 \msun.
B: Teff = 17,200 +/- 110 K, log g = 7.957 +/- 0.020, R = 0.01308 +/- BdH2017b
0.00020 \rsun, M = 0.565 +/- 0.031 \msun, l = 0.01349 +/- 0.00054
\lsun. Inferred cooling age 122 Myr. Assuming a pre-WD progenitor of
1.8 \msun with a lifetime of 1.7 Gyr gives a total system age of ~1.8
Gyr. It has a thin outer hydrogen layer.
AD, AE: Rectilinear solutions by Friedman et al. (2011). USN2011a
BD, BE: Rectilinear solutions by Mason & Hartkopf (2016). Msn2016a
 
 
REFERENCES
 
 
refcode metd author reference
AlC2000 Po - Allen, C., Poveda, A., & Herrera, M 2000A&A...356..529A
AlC2000 A&A 356, 529, 2000
Baz1989d - Baize, P. & Petit, M. 1989A&AS...77..497B
Baz1989d A&AS 77, 497, 1989
BdH2017b not - Bond, H.E., Bergeron, P. & Bedard, A. 2017ApJ...848...16B
BdH2017b ApJ 848, 16, 2017
Chm2004 E - Chaname, J. & Gould, A. 2004ApJ...601..289C
Chm2004 ApJ 601, 289, 2004
Chm2004 (Photometry, coordinates, and astrometry from rNLTT. Astrometry from early
Chm2004 versions of 2MASS and UCAC, with date given only as "circa 2000". Measures
Chm2004 identical to discovery observations - predominantly close pairs - were assumed
Chm2004 not new observations, so not included in WDS. Similar concerns when primary and
Chm2004 secondary magnitudes or proper motions were the same.)
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 .
Kiy2008 - Kiyaeva, O.V., Kiselev, A.A. & Izmailov, I.S. 2008SvAL...32..405K
Kiy2008 SvAL 34, 405, 2008
LTI2009 not j Demory, B.-O., Segransan, D., Forveille, T., Queloz, D., Beuzit, J.-L., Delfosse, 2009A&A...505..205D
LTI2009 X., Di Folco, E., Kervella, P., Le Bouquin, J.-B., Perrier, C., Benisty, M., .
LTI2009 Duvert, G., Hofmann, K.-H., Lopez, B. & Petrov, R. .
LTI2009 A&A 505, 205, 2009 .
Msn2016a lin - Mason, B.D. & Hartkopf, W.I. 2016IAUDS.189....1M
Msn2016a Inf. Circ. 189, 1, 2016
Msn2017d orb j Mason, B.D., Hartkopf, W.I. & Miles, K.N. 2017AJ....154..200M
Msn2017d +not AJ 154, 200, 2017
Msn2017d +Cu
USN2011a lin - Friedman, E.A., Mason, B.D., & Hartkopf, W.I. 2011IAUDS.175....1F
USN2011a Inf. Circ. 175, 1, 2011
Wor1956b Ma - Worley, C.E. 1956AJ.....61..162W
Wor1956b AJ 61, 162, 1956
 
 
DISCOVERER
 
 
idgroup discov author
1 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
04153-0739 STF 518 BE 1922 1 356 279.5 10.02 12.50 A N P 041521.50-073922.3
04153-0739 STF 518 BE 1998 2 16 559.5 10.02 12.50 A N DP 041521.97-073925.5
04153-0739 STF 518 BE 1999 3 16 563.7 10.02 12.99 DA NU P 041521.79-073929.1
04153-0739 STF 518 BE 2014 4 16 563.4 9.53 12.99 DA2.9 NL P 041521.79-073929.1

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