14242( 3) - 08-Jul-2015 14:02:04 - [ 1] HUBBLE SPACE TELESCOPE OBSERVING PROGRAM 14242 Version: 3 Check-in Time: 08-Jul-2015 14:02:04 STScI Edit Number: 0 Title Deep Multiwavelength Campaign on an AGN Outflow: Absolute Abundances and the Warm Absorber Connection ------------------------------------------------------------------------------------ Type Cycle GO 23 ------------------------------------------------------------------------------------ Investigators Contact? PI: Dr. Nahum Arav Virginia Polytechnic Institute and State Y University CoI: Dr. Gerard A. Kriss Space Telescope Science Institute N CoI: Dr. Ehud Behar Technion-Israel Institute of Technology N CoI: Dr. Jelle Kaastra Space Research Organization Netherlands N CoI: Carter Chamberlain Virginia Polytechnic Institute and State N University CoI: Dr. Katrien Christine Steenbrugge University of Oxford N CoI: Dr. Stefano Bianchi Universita' degli Studi Roma Tre N CoI: Dr. Massimo Cappi INAF - IASF Bologna N CoI: Dr. Elisa Costantini Space Research Organization Netherlands N CoI: Dr. Jacobo Ebrero ESA-European Space Astronomy Centre N CoI: Dr. Shai Kaspi Tel Aviv University - Wise Observatory N CoI: Missagh Mehdipour Space Research Organization Netherlands N CoI: Dr. Stephane Paltani Observatoire de Geneve N CoI: Dr. Pierre-Olivier Petrucci Institut de Planetologie et N d'Astrophysique de Grenoble CoI: Dr. Gabriele Ponti Max-Planck-Institut fur extraterrestrische N Physik CoI: Dr. Barbara De Marco Max-Planck-Institut fur extraterrestrische N Physik CoI: Dr. Graziella Branduardi-Raymont University College London N CoI: Dr. Ciro Pinto University of Cambridge N CoI: Dr. Guilin Liu Virginia Polytechnic Institute and State N University ------------------------------------------------------------------------------------ Abstract Our team was recently awarded a deep multiwavelength campaign on the AGN outflow seen in the Seyfert 1 galaxy NGC 7469: 560 ks on XMM, 140 ks NuSTAR observations, 80 ks Swift, 14 HST/COS orbits (covering 1135A - 1700A), and optical ground-based monitoring. The missing piece in our campaign is the ability to measure absolute abundances, which are crucial for determining the ionization equilibrium and kinetic luminosity of the outflow. Here we propose to obtain near-simultaneous HST/COS spectra of the 940A-1100A range covering the Lyman beta, gamma and delta lines, which are needed for abundance determination. This will reduce the uncertainties on the ionization equilibrium and kinetic luminosity by an order of magnitude. These observations also cover the O VI doublet that allows us to connect the X-ray warm absorber with the UV outflow. AGN Outflows play a crucial role in feedback processes that control galaxy evolution, the growth of central black holes in galaxies, and the enrichment of the ICM and the IGM. Our research collaboration achieved unprecedented scientific 14242( 3) - 08-Jul-2015 14:02:04 - [ 2] results from two similarly large campaigns on Mrk 509 and NGC 5548. Besides the deep coverage of many spectral regions, we also cover the time domain, which is crucial for determining the distance of the bulk of the outflow from the central source. ------------------------------------------------------------------------------------ Observations Description ------------------------ We will obtain medium-resolution far-UV spectra of NGC 7469 using COS. We will use grating G130M/1096 primarily to measure absorption in the high-ionization O VI 1032, 1038 resonance doublet, and the Ly beta, Ly gamma, and Ly delta lines. The R~12, 000 resolving power of the G130M/1096 grating setting fully resolves the 100 km/s widths of the UV absorption components in NGC 7469 (Scott et al. 2004). This resolution enables detailed measurements of trough profiles, optical depths, and covering factors in Lybeta, Ly gamma, Lydelta, and O VI. The far-UV flux of NGC 7469 has historically ranged from a low of 1.5e-14 erg cm^{-2} s^{-1} A^{-1} at 1360 A to a high of 6.2e-14 erg cm^{-2} s^{-1} A^{-1} (based on data from the HST archive), with a mean flux of 3.2e-14 erg cm^{-2} s^{-1} A^{-1}. A S/N of 10 per resolution element in the continuum at 1040 A is necessary to measure the mildly saturated O VI troughs seen in the FUSE spectrum. Using the COS ETC (v23.2.1), a S/N of 10 per resolution element in the continuum at 1040 A requires 22, 200 seconds of exposure time. This calculation is optimized for O VI, but we will achieve comparable S/N in Lybeta, Ly gamma and Lydelta. For the longer-wavelength lines S/N will exceed 50, in principle. With multiple exposures at different FP-POS positions, this is possible. We note that the high resolution afforded by COS makes our proposed observations robust to flux variations to fainter levels. The ~100 km/s troughs are spanned by 4 COS resolution elements. In the extreme case where NGC 7469 will be in the lowest historic observed flux state, we could bin our spectrum up by a factor of two and still oversample the absorption troughs at the same S/N. These observations pose no bright object concerns. All historical flux levels for NGC 7469 lie below the bright object limits for COS. Since NGC 7469 has been observed successfully before (see HST PIDs 12212 and 14054), there are also no surrounding field objects that are too bright. Our ETC calculations use the ETC FOS quasar spectrum redshifted to z=0.016317 with foreground extinction of E(B-V)=0.061 and normalized to the historical minimum and maximum flux at 1360 A (flam_min=1.5e-14, flam_max=6.2e-14, Dunn et al. 2006) in order to get our limiting cases: - ACQUISITION - Configuration Flux EXP time Max cts/s/pix Total rate Buffer Time COS ETC ID G130M/1291 1.5e-14 25 s 0.10 1059 2227 COS.sa.715054 G130M/1291 6.2e-14 25 s 0.11 2979 791 COS.sa.715055 - EXPOSURES - Configuration Flux EXP time Max cts/s/pix Total rate Buffer Time COS ETC ID G130M/1096 6.2e-14 1000 0.08 970 2431 COS.sp.715060 Coordination with XMM-Newton Our HST observations will be coordinated with an on-going XMM-Newton program which is currently scheduled to observe NGC 7469 simultaneously with HST program 14054 in the following plan windows: 14242( 3) - 08-Jul-2015 14:02:04 - [ 3] Visit 02 NGC-7469 Nov 24, 2015 - Nov 25, 2015 Visit 03 NGC-7469 Dec 14, 2015 - Dec 16, 2015 Visit 04 NGC-7469 Dec 22, 2015 - Dec 22, 2015 Visit 05 NGC-7469 Dec 24, 2015 - Dec 26, 2015 Visit 06 NGC-7469 Dec 26, 2015 - Dec 28, 2015 Visit 07 NGC-7469 Dec 28, 2015 - Dec 30, 2015 Each of the two visits from this program should be scheduled adjacent to one of the visits from program 14054 above, within 1 day. ------------------------------------------------------------------------------------ 14242( 3) - 08-Jul-2015 14:02:04 - [ 4] TARGET LIST Fixed Targets ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial | Flux data No | Name | Description | Position |Eqnx | Vel. | ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC-7469 GALAXY, ACCRETION DISK, RA=23H03M15.6740S +/- 0.1", J2000 Z = V = 12.34 +/- 0.5 3.2e-14 at 1360 A BLR, NLR, NUCLEUS, DEC=+08D52'25.28" +/- 0.1" 0.016317 SEYFERT Reference Frame: ICRS Extended: NO Comments: This object was generated by the targetselector and retrieved from the SIMBAD database. ------------------------------------------------------------------------------------------------------------------------------------ 14242( 3) - 08-Jul-2015 14:02:04 - [ 5] Visit: 01 Visit Requirements: SCHED 100% On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC-7469 COS/FUV ACQ/PEA PSA G130M 1291 1 25 S (25 KXD S) ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC-7469 COS/FUV ACQ/PEA PSA G130M 1291 NUM-POS=5, STEP-SIZE=0.9, 1 25 S (25 KD CENTER=FLUX-WT-FLR S) ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC-7469 COS/FUV TIME-TA PSA G130M 1096 BUFFER-TIME=700, FP-POS=3 1 2075 S G (2075 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 NGC-7469 COS/FUV TIME-TA PSA G130M 1096 BUFFER-TIME=330, FP-POS=4 1 2705 S G (2705 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 NGC-7469 COS/FUV TIME-TA PSA G130M 1096 BUFFER-TIME=330, FP-POS=1 1 2705 S G (2705 S) ------------------------------------------------------------------------------------------------------------------------------------ 6 NGC-7469 COS/FUV TIME-TA PSA G130M 1096 BUFFER-TIME=330, FP-POS=2 1 2705 S G (2705 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ NGC-7469 1 COS/FUV ACQ/PEA PSA G130M 1291 none none none none 1 N/A KXD NGC-7469 2 COS/FUV ACQ/PEA PSA G130M 1291 none none none none 1 N/A KD NGC-7469 3 COS/FUV TIME-TA PSA G130M 1096 none none none none 1 N/A G NGC-7469 4 COS/FUV TIME-TA PSA G130M 1096 none none none none 2 N/A G NGC-7469 5 COS/FUV TIME-TA PSA G130M 1096 none none none none 3 N/A G NGC-7469 6 COS/FUV TIME-TA PSA G130M 1096 none none none none 4 N/A G 14242( 3) - 08-Jul-2015 14:02:04 - [ 6] Visit: 02 Visit Requirements: SCHED 100% On Hold Comments: Additional Comments: Exposures ------------------------------------------------------------------------------------------------------------------------------------ Exp | Target | Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special Num | Name | Config | Mode | or FOV |Element |Waveln.| Parameters |Exp| (Total) | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC-7469 COS/FUV ACQ/PEA PSA G130M 1291 1 25 S (25 KXD S) ------------------------------------------------------------------------------------------------------------------------------------ 2 NGC-7469 COS/FUV ACQ/PEA PSA G130M 1291 NUM-POS=5, STEP-SIZE=0.9, 1 25 S (25 KD CENTER=FLUX-WT-FLR S) ------------------------------------------------------------------------------------------------------------------------------------ 3 NGC-7469 COS/FUV TIME-TA PSA G130M 1096 BUFFER-TIME=700, FP-POS=3 1 2075 S G (2075 S) ------------------------------------------------------------------------------------------------------------------------------------ 4 NGC-7469 COS/FUV TIME-TA PSA G130M 1096 BUFFER-TIME=330, FP-POS=1 1 2705 S G (2705 S) ------------------------------------------------------------------------------------------------------------------------------------ 5 NGC-7469 COS/FUV TIME-TA PSA G130M 1096 BUFFER-TIME=330, FP-POS=2 1 2705 S G (2705 S) ------------------------------------------------------------------------------------------------------------------------------------ 6 NGC-7469 COS/FUV TIME-TA PSA G130M 1096 BUFFER-TIME=330, FP-POS=3 1 2705 S G (2705 S) ------------------------------------------------------------------------------------------------------------------------------------ 7 NGC-7469 COS/FUV TIME-TA PSA G130M 1096 BUFFER-TIME=330, FP-POS=4 1 2705 S G (2705 S) ------------------------------------------------------------------------------------------------------------------------------------ Sub Exposures ------------------------------------------------------------------------------------------------------------------------------------ Target | Exp |Instr | Oper. | Aper |Spectral|Cent.|Primary |Secondary |Iteration |CR-SPLIT |Orbit |Duration Name | Num |Config | Mode | or FOV |Element |Wave.|Pattern Pos |Pattern Pos |Num |Num |Number | ------------------------------------------------------------------------------------------------------------------------------------ NGC-7469 1 COS/FUV ACQ/PEA PSA G130M 1291 none none none none 1 N/A KXD NGC-7469 2 COS/FUV ACQ/PEA PSA G130M 1291 none none none none 1 N/A KD NGC-7469 3 COS/FUV TIME-TA PSA G130M 1096 none none none none 1 N/A G NGC-7469 4 COS/FUV TIME-TA PSA G130M 1096 none none none none 2 N/A G NGC-7469 5 COS/FUV TIME-TA PSA G130M 1096 none none none none 3 N/A G NGC-7469 6 COS/FUV TIME-TA PSA G130M 1096 none none none none 4 N/A G NGC-7469 7 COS/FUV TIME-TA PSA G130M 1096 none none none none 5 N/A G 14242( 3) - 08-Jul-2015 14:02:04 - [ 7] Summary Form for Proposal 14242 Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Apertures PSA ------------------------------------------------------------------------------------------------------------------------------------ Configurations COS/FUV ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACQ/PEAKD, ACQ/PEAKXD, TIME-TAG ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters BUFFER-TIME=330, BUFFER-TIME=700, CENTER=FLUX-WT-FLR, FP-POS=1, FP-POS=2, FP-POS=3, FP-POS=4, NUM-POS=5, STEP-SIZE=0.9 ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements SCHED 100% ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements G130M ------------------------------------------------------------------------------------------------------------------------------------ Target Names NGC-7469 ------------------------------------------------------------------------------------------------------------------------------------