David's Astronomy - Notes 2006-05-12 (S00126) (original) (raw)

As part of an ongoing project examining the variability in RT Auriga, further image sets of the variable star RT Aur & the reference star SAO SAO 78571 were recorded. Image sets comprised 7 sequences of images (3 x 2s V & 3 x 5s B) alternated between RT Aur & reference star. These and previous image sets from previous session from Feb-May 2006 were analyzed using the methodology previously described under 2005-10-05 Notes. Results are shown in graphs below. Data is consistent with a regular variation with a period of 3.728115 days.
Quality control was less tight than ideal due to the faintness of the available check star (particularly in B). Data quality, particularly in B Band, suffered from increasing Airmass through May, which hampered ability to confirm B-V trends through the magnitude minima. Nevertheless the light curve for RT Auriga has been reasonably well constrained by the total dataset.

RT Aur (Auriga) RT Aug (mag ~ +5) with Struve 907 double star,+9.3 & +10.4, separation 12 arc secs
CCD Image (50% size) 60 sec exposure, 1x1 binning, C Filter 2006-02-10 22:11h UT (#114120) [ Full Size Image ]
V Band Magnitude estimates for RT Aug Reference Star SAO 78571 (mag +5.75) Check Star GSC 2422:1019 (mag +10.36)
B Band Magnitude estimates for RT Aug Reference Star SAO 78571 (mag +5.76) Check Star GSC 2422:1019 (mag +11.38)
V Band Light Curve for RT Aug Reference Star SAO 78571 (mag +5.75), Check Star GSC 2422:1019 (mag +10.36)
B Band Light Curve for RT Aug Reference Star SAO 78571 (mag +5.76) Check Star GSC 2422:1019 (mag +11.38)
B Band Light Curve for RT Aug Reference Star SAO 78571 (mag +5.76) Check Star GSC 2422:1019 (mag +11.38)
Light Curve for RT Aug Magnitude and colour variation in RT Auriga based on observations on 12 observing sessions between 2006-02-10 and 2006-05-12[ Reference Star SAO 78571 ]