Assigned ID: 144 ----- Attempting Submission 1 (Thu Feb 25 15:49:08 GMT 2010) ----- Updated binary ephemeris (important for Visit 1) and ACQ exp time (from suggestion from Charles Proffitt). FP-POS and central wavelength positions from a suggestion from Charles Proffitt. Thanks! ----- Attempting Submission 1 (Tue Jun 29 13:52:23 GMT 2010) ----- ----- Attempting Submission 2 (Fri Jun 10 15:11:35 GMT 2011) ----- Visit 4 already scheduled. The NASA Kepler Science Team recently announced the discovery of two transiting binaries that have "planets" hotter than their host stars. These systems probably represent the first known examples of white dwarfs formed through mass loss and transfer among intermediate mass, close binary stars. Here we propose to obtain COS FUV spectroscopy of one of these systems, KOI-81, in order to detect the hot companion in a part of the spectrum where it is relatively bright. The spectral flux and Doppler shift measurements will yield the temperatures, masses, radii, and compositions of both components. These observations will provide our first opportunity to explore this previously hidden stage of close binary evolution.

We propose to obtain FUV spectroscopy of KOI-81 at five points in the orbit: two near radial velocity maximum, two near radial velocity minimum, and one during hot companion eclipse. The ephemeris is from Jason Rowe (2010, priv. communication). Each visit will include a target acquisition, cross-dispersion peak up, dispersion peak up, and ten science observations at different FP-POS and central wavelength positions made with the COS/FUV and G130M. Exposure times were estimated using the COS ETC and a model spectrum for the FUV flux. We would like to optimize S/N. HOT STARS 0 false 0.0 0.0 false false false false SUPPORTED STAR A0-A3 V-IV This object was generated by the targetselector and retrieved from the GSC 2.3 database. N2K9001230 J2000 J2000 COS/FUV Spectroscopic No No G130M 1309 1307718495147 /tmp/OPVisit6944142280984231086.xml The scheduling data was generated by CASM 19.3. CASM was run in Phase II mode. Eclipse phase (Tic-Visit :proposal-id 12288 :visit-id "01" :proposal-version -1 :trans-version "20110509" :date "10-Jun-2011 11:08:13.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 1078736 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 12288 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 12288 :visit-id "01" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2999 :al-overhead-at-end 0 :internal-dur-at-end 69 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3391 :pcs-gap 0 ) (Tic-Orbit :proposal-id 12288 :visit-id "01" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3167 :al-overhead-at-end 0 :internal-dur-at-end 371 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3391 :pcs-gap 0 ) true 2 0 DIspersed light target acquistion for S/N=40 Cross dispersion peak up for S/N=70 Science exposure second science exposure third science exposure fourth science exposure third science exposure third science exposure fourth science exposure Science exposure second science exposure third science exposure 1307718503586 /tmp/OPVisit1853120417911951643.xml The scheduling data was generated by CASM 19.3. CASM was run in Phase II mode. first low velocity phase (Tic-Visit :proposal-id 12288 :visit-id "02" :proposal-version -1 :trans-version "20110509" :date "10-Jun-2011 11:08:22.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 1078736 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 12288 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 12288 :visit-id "02" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2999 :al-overhead-at-end 0 :internal-dur-at-end 69 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3391 :pcs-gap 0 ) (Tic-Orbit :proposal-id 12288 :visit-id "02" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3167 :al-overhead-at-end 0 :internal-dur-at-end 371 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3391 :pcs-gap 0 ) true 2 0 DIspersed light target acquistion for S/N=40 Cross dispersion peak up for S/N=70 Science exposure second science exposure third science exposure fourth science exposure third science exposure third science exposure fourth science exposure Science exposure second science exposure third science exposure 1307718514466 /tmp/OPVisit6550561073530622850.xml The scheduling data was generated by CASM 19.3. CASM was run in Phase II mode. second low velocity phase (Tic-Visit :proposal-id 12288 :visit-id "03" :proposal-version -1 :trans-version "20110509" :date "10-Jun-2011 11:08:33.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 1078736 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 12288 :visit-id "03" :obset-id "03" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 12288 :visit-id "03" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2999 :al-overhead-at-end 0 :internal-dur-at-end 69 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3391 :pcs-gap 0 ) (Tic-Orbit :proposal-id 12288 :visit-id "03" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3167 :al-overhead-at-end 0 :internal-dur-at-end 371 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3391 :pcs-gap 0 ) true 2 0 DIspersed light target acquistion for S/N=40 Cross dispersion peak up for S/N=70 Science exposure second science exposure third science exposure fourth science exposure third science exposure third science exposure fourth science exposure Science exposure second science exposure third science exposure 1277819096466 The scheduling data was generated by CASM 18.3.1. CASM was run in Phase II mode. first high velocity phase 1308678821000 203.0402373347397 (Tic-Visit :proposal-id 12288 :visit-id "04" :proposal-version -1 :trans-version "20100505" :date "29-Jun-2010 09:44:55.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 1078736 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 12288 :visit-id "04" :obset-id "04" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 12288 :visit-id "04" :orbit-number 1 :pcs-time 333 :si-vis-utilization 3055 :al-overhead-at-end 0 :internal-dur-at-end 69 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3391 :pcs-gap 0 ) (Tic-Orbit :proposal-id 12288 :visit-id "04" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3167 :al-overhead-at-end 0 :internal-dur-at-end 371 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3391 :pcs-gap 0 ) false 2 0 DIspersed light target acquistion for S/N=40 Cross dispersion peak up for S/N=70 Science exposure second science exposure third science exposure fourth science exposure third science exposure third science exposure fourth science exposure Science exposure second science exposure third science exposure 1307718472972 /tmp/OPVisit6163297443371455646.xml The scheduling data was generated by CASM 19.3. CASM was run in Phase II mode. second high velocity phase (Tic-Visit :proposal-id 12288 :visit-id "05" :proposal-version -1 :trans-version "20110509" :date "10-Jun-2011 11:07:51.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 1078736 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 12288 :visit-id "05" :obset-id "05" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 12288 :visit-id "05" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2999 :al-overhead-at-end 0 :internal-dur-at-end 69 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3391 :pcs-gap 0 ) (Tic-Orbit :proposal-id 12288 :visit-id "05" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3167 :al-overhead-at-end 0 :internal-dur-at-end 371 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3391 :pcs-gap 0 ) true 2 0 DIspersed light target acquistion for S/N=40 Cross dispersion peak up for S/N=70 Science exposure second science exposure third science exposure fourth science exposure third science exposure third science exposure fourth science exposure Science exposure second science exposure third science exposure