LPV
Alert Notice 645: Monitoring of LPVs for Maser Study
Note: This campaign has been extended to October 2020 and the list of targets has been revised. Please see AAVSO Alert Notice 687 for details. - Elizabeth O. Waagen, December 4, 2019
July 31, 2018: Michael Stroh (Ph.D. candidate, University of New Mexico) requests AAVSO assistance in monitoring 19 LPVs in support of a VLA campaign studying SiO masers. AAVSO monitoring begins now and goes through October 2019.
LPV of the Month July, 2018
SS Virginis
A Carbon Star
Summary
This month's Long Period Variable (LPV), SS Vir, should be a treat for visual observers. SS Vir is a bright but very dark red Carbon Star. It’s B-V index is 4.20, making it one of the reddest object around.
AAVSO Bulletin 81 for 2018 published
AAVSO Bulletin 81: Predicted Dates of Maxima and Minima of Long Period Variables for 2018 has been published. This annual publication covers the period January 2018 - February 2019 and gives predicted extrema dates for 381 Long Period Variables in the AAVSO's Legacy LPV program.
AAVSO Bulletin 81 for 2018 - Stars with Double Maxima
In AAVSO Bulletin 81 there are two stars that exhibit double maxima: R Cen and R Nor. These stars therefore have primary and secondary maxima and minima. They are not included in the main Bulletin table.
AAVSO Bulletin 81 for 2018 - How to Use the Bulletin
AAVSO Bulletin 81 - Predicted Dates of Maxima and Minima of Long Period Variables for 2018 - is published in the format that was introduced in 2011.
AAVSO Bulletin 81 for 2018 - Introduction
AAVSO Bulletin 81: Predicted Dates of Maxima and Minima of
381 Long Period Variables for 2018
AAVSO Bulletin 81 for 2018 - Letter to Observers
Letter to Users of 2018 Bulletin
AAVSO Bulletin 81 for 2018
Predicted Dates of Maxima and Minima of 381 Long Period Variables for 2018
