Over the past 15 years, examples of exotic radio-quiet quasars with intrinsically weak or absent broad emission line regions (BELRs) have emerged from large-scale spectroscopic sky surveys. Such types of weak-lined quasars (hereafter WLQs) challenge both the standard orientation-based quasar unification paradigm, and also quasar models that explicitly include factors beyond orientation (e.g., "disk+wind'' BELR models). WLQs thus represent a new extreme of parameter space. Here, we propose STIS UV observations (7 orbits) for six WLQs to measure their (weak) Lyalpha line properties and their UV continuum slopes. Our targets cover 0.9<z<1.4, a carefully selected redshift range that allows HST to access the spectral regime near Lyalpha, and where our existing ground-based spectra also cover longer-wavelength emission line species through at least MgII[2800 Ang]. This unprecedented spectral coverage for WLQs, combined with existing Chandra X-ray data, will allow us to compare line properties over a broad range of ionization potentials with the underlying broadband ionizing continuum. We will determine if WLQ BELRs are in an exotic ionization state due to exceptionally soft ionizing continua, or if WLQs are instead unusually gas-deficient. Understanding the physical mechanisms that prevent strong emission lines from forming will present new clues into the extent that intrinsic differences among quasars can affect their their radiative and mechanical output, which has important implications for quasar unification and for black hole feedback. We will use the STIS/NUV-MAMA G230L grating to observe Ly alpha and the nearby continuum for six Weak Emission Line Quasars (0.9<z<1.4), in order to constrain the properties of their unusual broad emission line regions. One source will be observed for two orbits, the rest require only a single orbit per source. We include a target acquisition (with the STIS/CCD) at the beginning of each visit to center the target. Targets were selected from the SDSS and matched to GALEX catalogs in order to obtain UV fluxes. Exposure times were calculated using the STIS ETCs to achieve S/N>10 per resolution element at 1216 Angstroms rest-frame, based on their GALEX NUV magnitudes. Target acquisition exposure times (with STIS/CCD) were calculated to achieve S/N > 40 over a 3x3 pixel checkbox, based on their SDSS optical magnitudes. We will take two exposures per orbit dithered along the slit, in order to clean for cosmic-rays and hot pixels. N/A N/A N/A AGN/QUASARS Default false true false false false SUPPORTED GALAXY BLR QSO J2000 J2000 GALEX(NUV)= 19.1 mag GALAXY BLR QSO J2000 J2000 GALEX(NUV)= 19.1 mag GALAXY BLR QSO J2000 J2000 GALEX(NUV)= 18.8 mag GALAXY BLR QSO J2000 J2000 GALEX(NUV)= 19.1 mag GALAXY BLR QSO J2000 J2000 GALEX(NUV)= 18.8 mag GALAXY BLR QSO J2000 J2000 GALEX(NUV)= 18.8 mag STIS/NUV-MAMA Spectroscopic No No G230L 2376 STIS/NUV-MAMA Spectroscopic No No G230L 2376 STIS/NUV-MAMA Spectroscopic No No G230L 2376 STIS/NUV-MAMA Spectroscopic No No G230L 2376 STIS/NUV-MAMA Spectroscopic No No G230L 2376 STIS/NUV-MAMA Spectroscopic No No G230L 2376 POS-TARG DITHER 0.3 LINE false false 2 90.0 STIS-ALONG-SLIT 1 false The scheduling data was generated by CASM 21.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 13298 :visit-id "01" :proposal-version -1 :trans-version "20130502" :date "19-Jun-2013 15:36:05.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "24" :si-bright-earth-limb-angle 20.0 :data-volume 174416 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13298 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13298 :visit-id "01" :orbit-number 1 :pcs-time 333 :si-vis-utilization 3096 :al-overhead-at-end 85 :internal-dur-at-end 394 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3430 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 21.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 13298 :visit-id "02" :proposal-version -1 :trans-version "20130502" :date "19-Jun-2013 15:36:07.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "24" :si-bright-earth-limb-angle 20.0 :data-volume 157008 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13298 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13298 :visit-id "02" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2920 :al-overhead-at-end 0 :internal-dur-at-end 375 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3253 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 21.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 13298 :visit-id "03" :proposal-version -1 :trans-version "20130502" :date "19-Jun-2013 15:36:08.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "24" :si-bright-earth-limb-angle 20.0 :data-volume 157008 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13298 :visit-id "03" :obset-id "03" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13298 :visit-id "03" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2920 :al-overhead-at-end 0 :internal-dur-at-end 375 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3253 :pcs-gap 0 ) true 1 0 The scheduling data was generated by CASM 21.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 13298 :visit-id "04" :proposal-version -1 :trans-version "20130502" :date "19-Jun-2013 15:36:10.0" :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 313584 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13298 :visit-id "04" :obset-id "04" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13298 :visit-id "04" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2896 :al-overhead-at-end 0 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3229 :pcs-gap 0 ) (Tic-Orbit :proposal-id 13298 :visit-id "04" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3007 :al-overhead-at-end 0 :internal-dur-at-end 375 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3229 :pcs-gap 0 ) true 2 0 The scheduling data was generated by CASM 21.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 13298 :visit-id "05" :proposal-version -1 :trans-version "20130502" :date "19-Jun-2013 15:36:11.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "24" :si-bright-earth-limb-angle 20.0 :data-volume 157008 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13298 :visit-id "05" :obset-id "05" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13298 :visit-id "05" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2910 :al-overhead-at-end 0 :internal-dur-at-end 375 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3244 :pcs-gap 0 ) false 1 0 The scheduling data was generated by CASM 21.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 13298 :visit-id "06" :proposal-version -1 :trans-version "20130502" :date "19-Jun-2013 15:36:12.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "24" :si-bright-earth-limb-angle 20.0 :data-volume 157008 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 13298 :visit-id "06" :obset-id "06" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 13298 :visit-id "06" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2920 :al-overhead-at-end 0 :internal-dur-at-end 375 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3253 :pcs-gap 0 ) true 1 0