0 Assigned ID: 1568 ----- Attempting Submission 1 (Sat Sep 30 20:51:47 GMT 2017) ----- 0 ----- Attempting Submission 1 (Mon Dec 04 18:09:46 GMT 2017) ----- ----- Attempting Submission 2 (Wed Jan 03 16:45:05 GMT 2018) ----- The Be star HD 6226 has shown quasi-regular photometric outbursts with peaks every ~630 d. These episodes have been shown to correspond to epochs where the star builds an equatorial decretion disk, the signature of classical Be stars. Although the outburst can be anticipated, the exact time of the onset and duration of the episode differ every cycle. During the current disk-building epoch, amateur spectroscopists caught the very beginning of the disk-building through time-resolved H-alpha spectroscopy during 2017 August. This has allowed us to probe the disk evolution both spectroscopically and polarimetrically. We will use the results of this variability campaign to constrain the process by which Be stars build their disks using the viscous decretion disk model, but this can only be accomplished with strong constraints on the stellar parameters and ultraviolet flux. Therefore, we request time with HST to observe HD 6226 with STIS in order to obtain accurate flux measurements and high-resolution spectroscopy in the near future so that the models can be appropriately developed. Our plan is to obtain a STIS echelle spectrum of the Be star HD6226. The first orbit will consist of acquisition of the star and the NUV setups with the E230M centered at 2707 and 1978A. The second orbit will consist of the FUV setup with the E140M grating. Stellar Physics 6 false true false false false false SUPPORTED STAR B3-B5 V-IV This object was generated by the targetselector and retrieved from the SIMBAD database. HD6226 J2000 J2000 STIS/FUV-MAMA Spectroscopic No No E140M 1425 STIS/NUV-MAMA Spectroscopic No No E230M 1978 STIS/NUV-MAMA Spectroscopic No No E230M 2707 1514997883323 /private/var/folders/zt/6xkyfcw50gbc72yw3jwjjjh80000gn/T/OPVisit2833120869808646278.xml The scheduling data was generated by CASM 25.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 15432 :visit-id "01" :proposal-version -1 :trans-version "20171009" :date "03-Jan-2018 11:44:43.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "24" :si-bright-earth-limb-angle 20.0 :data-volume 261552 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15432 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15432 :visit-id "01" :orbit-number 1 :pcs-time 333 :si-vis-utilization 3011 :al-overhead-at-end 227 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3345 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15432 :visit-id "01" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3123 :al-overhead-at-end 227 :internal-dur-at-end 319 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3345 :pcs-gap 0 ) true 2 0