Return to Home Page
> I looked back through my files > and discovered that I had found a quite believable period of 1.87213(5) > days in 1998. Using that ephemeris as a starting point I have incorporated > the photometry published in the recent postings to come up with this... > > HJD_minI = 2448725.728 + 1.872210xE Chris, I used your period and form the resulting graph I was suspicious from the lack of secondary eclipse. So doubling the period ended up with the best lightcurve. I applied heliocentric correction to my observations and finally found: I = HJD 2448725.720 + 3.744399 x E See my webpage at: http://ar.geocities.com/varsao/Curva_FU_Eridani.htm I smoothed AAX observations to fit them in the graphs as follows: JD2440000+ corrected V mag. visual AAX 12292.6014 9.28 9.0 12309.5146 9.26 8.9 12396.5778 9.26 8.9 12317.5396 9.25 8.8 12475.7785 9.60 9.3 No eclipse 12475.8257 9.28 9.0 12490.7375 9.40 9.2 Eclipse 12496.8507 9.33 9.1 12497.6674 9.28 9.0 12521.5917 9.26 8.9 12525.6799 9.28 9.0 12525.7785 9.33 9.1 12549.6389 9.26 8.9 12550.5458 9.33 9.1 12560.6910 9.26 8.9 See that Alexandre caught the secondary eclipse (also observed by Hipparcos) but the 9.3 observation (=9.60) is a mistake. Here are my observations to two decimal points, which makes them more useful: 20030213.016 12683.5144 9.61 20030213.036 12683.5346 9.67 20030213.050 12683.5485 9.72 20030213.063 12683.5610 9.74 20030213.069 12683.5679 9.74 20030213.097 12683.5957 9.67 20030213.133 12683.6318 9.54 So we have a new Hipparcos EA figured out! Congrats, Sebastian. --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://vsnet.grisoft.com). Version: 6.0.455 / Virus Database: 255 - Release Date: 13/02/03
Return to the Daisaku
vsnet-adm@kusastro.kyoto-u.ac.jp
