J1047+0739: X-ray weak/obscured AGN or extreme starburst?

Unsupported characters were found in Abstract and replaced with |*| Science Keywords: Select from 2 to 5 items. Science Keywords is a required field. Small GO Proposals are not allowed in Cycle 26 unless they are Joint Programs. Please specify your scheduling constraints or 'No Constraints' on all Observation forms. 0 Assigned ID: 34 ----- Attempting Submission 1 (Thu Aug 02 13:14:44 GMT 2018) ----- Joint Chandra/HST POS TARG & PATTERN should be used carefully with ACS ramp filters as central wavelengths & transmission efficiencies vary within the apertures. POS TARG & PATTERN should be used carefully with ACS ramp filters as central wavelengths & transmission efficiencies vary within the apertures. POS TARG & PATTERN should be used carefully with ACS ramp filters as central wavelengths & transmission efficiencies vary within the apertures. POS TARG & PATTERN should be used carefully with ACS ramp filters as central wavelengths & transmission efficiencies vary within the apertures. Corrected exposures. Auto-adjusted last exposure. -1123587528 ----- Attempting Submission 1 (Wed Sep 19 21:02:58 GMT 2018) ----- ----- Attempting Submission 2 (Thu Dec 13 15:52:11 GMT 2018) ----- ----- Attempting Submission 3 (Thu Dec 13 19:42:06 GMT 2018) ----- Your proposal could not be saved. Submission aborted. ----- Attempting Submission 5 (Fri Dec 14 15:29:52 GMT 2018) ----- Based on Aladin, it appears that the source is centered in the FR782N ramp filter peak sensitivity region. The box dither is only a few pixels, and hence should not be problematic. J1047+0739: X-ray weak/obscured AGN or extreme starburst? We propose a 50ks Chandra exposure of the enigmatic dwarf galaxy, SDSS J1047+0739, which has exceptionally luminous broad H-alpha, yet lies a factor of ~100 below the mean X-ray to H-alpha and [OIII] relations for AGN in a previous Chandra snapshot. The new data will characterize the X-ray spectral and temporal nature far better, addressing how such an extreme object might still be explained under the AGN paradigm. We additionally request HST ACS imaging to characterize the H-alpha morphology and distribution (point-like, clumpy, extended) on >0.1" scales. Coupled with the X-ray constraints, this will help to discern the production mechanism of the constant broad component in J1047+0739 and ultimately address how trustworthy optical broad lines are as tracers of AGN activity. Observational aim is to constrain spatial extent of the broad H-alpha line through prudent placement of the variable central wavelength of the ACS/WFC FR782N ramp-filter. Relevant numbers for J1047+0739 are z=0.16828, i=18.4 ABmag, FWHM~0.5", full extent~2", F_Ha,narrow=2.0e14 (13Ang), F_Ha,broad=2.9e14 (42Ang), F_[NII],6583=6.9e16 erg/s/cm2 (13Ang). We will obtain images sampling the full narrow+broad H-alpha line, the blue and red broad wings, and the continuum with the following: Setup (1): Lambda_center=7669Ang will image 100% of F_Ha,na and 91% of F_Ha,br in the H-alpha complex Setup (2): Lambda_center=7755Ang will image 17% of F_Ha,na and red 40% of F_Ha,br in the H-alpha complex Setup (3): Lambda_center=7583Ang will image 17% of F_Ha,na and blue 40% of F_Ha,br in the H-alpha complex Setup (4): Lambda_center=7474Ang will provide a continuum-only image to generate line-only images from the other setups. We expect only marginal contamination from [NII] and [SII]. Subtraction of the scaled continuum will give line only images. Subtraction of scaled line-only images will give reasonable red and blue broad-line and narrow-line images. We use a small 4-pt box dither to better sample the PSF for each setup. Using the ACS Imaging Exposure Time Calculator (ETC) with standard values, for setups 2 and 3 we aim to detect 25% of the total F_Ha,br, distributed evenly over ~2.0" diameter circular region (i.e., the whole extent), at S/N=20. We conservatively estimate we need ~5000 s split over 4 dithers plus ~350s (~2 orbits) for each setup. Unfortunately, the ETC was not operable presently to attach ETC run. Massive Black Holes And Their Host Galaxies 6 false false false false false false false SUPPORTED GALAXY BLR DWARF COMPACT EMISSION LINE NEBULA SEYFERT STARBURST YES SDSS-J104755.92+073951.1 J2000 J2000 i=18.4 AB, F_Ha,narrow=2.0e14 (13Ang), F_Ha,broad=2.9e14 (42Ang), F_[NII],6583=6.9e16 erg/s/cm2 (13Ang). ACS/WFC RampFilter No No FR782N POS-TARG DITHER 0.262 LINE 0.192 false false 68.14 4 18.39 ACS-WFC-DITHER-BOX 1

false

1544801178664 /private/var/folders/35/spdt8sqd3nq6406_62fcysx80000gn/T/OPVisit18210504260369067291.xml The scheduling data was generated by CASM 26.2.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 15617 :visit-id "01" :proposal-version -1 :trans-version "20181130" :date "14-Dec-2018 12:26:18.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 4 :saa-model "27" :si-bright-earth-limb-angle 20.0 :data-volume 568608 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15617 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15617 :visit-id "01" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2812 :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 3145 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15617 :visit-id "01" :orbit-number 2 :pcs-time 302 :si-vis-utilization 2843 :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 3145 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15617 :visit-id "01" :orbit-number 3 :pcs-time 302 :si-vis-utilization 2842 :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 3145 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15617 :visit-id "01" :orbit-number 4 :pcs-time 302 :si-vis-utilization 2830 :al-overhead-at-end 0 :internal-dur-at-end 347 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3145 :pcs-gap 0 ) true 4 0 ACS-WFC Ramp-filter ETC would not work ACS-WFC Ramp-filter ETC would not work 1544801343563 The scheduling data was generated by CASM 26.2.2. CASM was run in Phase II mode. /private/var/folders/35/spdt8sqd3nq6406_62fcysx80000gn/T/OPVisit14791888880712290529.xml (Tic-Visit :proposal-id 15617 :visit-id "02" :proposal-version -1 :trans-version "20181130" :date "14-Dec-2018 12:29:03.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 4 :saa-model "27" :si-bright-earth-limb-angle 20.0 :data-volume 568608 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15617 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15617 :visit-id "02" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2812 :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 3145 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15617 :visit-id "02" :orbit-number 2 :pcs-time 302 :si-vis-utilization 2843 :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 3145 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15617 :visit-id "02" :orbit-number 3 :pcs-time 302 :si-vis-utilization 2842 :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 3145 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15617 :visit-id "02" :orbit-number 4 :pcs-time 302 :si-vis-utilization 2830 :al-overhead-at-end 0 :internal-dur-at-end 347 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3145 :pcs-gap 0 ) true 4 0 ACS-WFC Ramp-filter ETC would not work ACS-WFC Ramp-filter ETC would not work