RW Aur more intense monitoring needed now
AAVSO Special Notice #402April 13, 2015RW Aur more intense monitoring needed now
Further to AAVSO Alert Notice 514 (www.aavso.org/aavso-alert-notice-514),the Chandra observations of the classical T Tauri star RWAur (component A) have been scheduled and will take place
2015 April 16 6:30 - 17:37 UT
Your observations are extremely important to Dr. HansMoritz Guenther's study of the mass pulled by RW Aur B from the disk that maybe surrounding RW Aur A, the currently-believed cause of the dimming of thesystem by about 3 magnitudes. Because of the very long orbit of the binary, thisevent is likely a once-in-a-lifetime observational opportunity.
Multicolor nightly observations have been requested; morefrequent observations during the satellite observations would be valuable.Please observe RW Aur in as many bands as possible. Oncethe satellite observations are completed, please continue observing nightlythrough the end of the current observing season. Visual observations arewelcome.
RW Aur is currently visual magnitude 12.2 as of 2015April 13 (BRJ, J. Bortle, Stormville, NY).
Coordinates:R.A.05 07 49.57Dec. +30 24 05.2 (2000.0)
Charts for RW Aur may be plotted using the AAVSO VariableStar Plotter (VSP, http://www.aavso.org/vsp).
Please use WebObs to report your observations to theAAVSO International Database using the name RW AUR.
Thank you very much for the excellent multicolor andvisual observations that have been submitted to date on RW Aur. Keep up thegood work!
This AAVSO Special Notice was prepared by Elizabeth O.Waagen.
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