! Program 6297 ! 6297_v3.prop ! ! Revised by Zlatko Tsvetanov on 17 May, 1996 as per Tony Keyes' ! recommendations. ! ! From Zlatko: ! Attached is 6297 revised according to Tony's suggestions. I have ! replaced the FOS aperture - now only 0.25-PAIR-A is used - and ! adjusted the Peak-up after the side switch from 3x3 to 5x5. Note ! that RPS2 shortens slightly the G160L exposure in the 5-th orbit ! (the one just after the side switch) to make it fit into the orbit. ! The change is 10% (from 400s to 360s). Proposal_Information ! Section 4 Title: Probing the Black Hole Environment: The Nuclear Spectrum of M87 Proposal_Category: GTO Scientific_Category: AGN Cycle: 5 Investigators PI_name: Holland Ford PI_Institution: Johns Hopkins University CoI_Name: Zlatan Tsvetanov CoI_Institution: Johns Hopkins University Contact: Y ! Y or N (designate at most one contact) CoI_Name: Gerard Kriss CoI_Institution: Johns Hopkins University Contact: ! Y or N (designate at most one contact) CoI_Name: Richard Harms CoI_Institution: RCH Scientific Contact: ! Y or N (designate at most one contact) CoI_Name: Bruce Margon CoI_Institution: University of Washington Contact: ! Y or N (designate at most one contact) CoI_Name: Margaret Burbidge CoI_Institution: University of California San Diego Contact: ! Y or N (designate at most one contact) CoI_Name: Angel Roger CoI_Institution: University of Arozona Contact: ! Y or N (designate at most one contact) CoI_Name: Edward Beaver CoI_Institution: University of California San Diego Contact: ! Y or N (designate at most one contact) CoI_Name: Frank Bartko CoI_Institution: University of Colorado Contact: ! Y or N (designate at most one contact) CoI_Name: Ralph Bohlin CoI_Institution: Space Telescope Science Institute Contact: ! Y or N (designate at most one contact) CoI_Name: Arthur Davidsen CoI_Institution: Johns Hopkins University Contact: ! Y or N (designate at most one contact) Abstract: ! Free format text (please update) NGC5252 contains one of the most spectacular examples of ionization cones observed in Seyfert galaxies extending out to several tens of kpc from the nucleus with cone axis almost perfectly aligned with the linear radio source. Our narrow- band WFPC-2 images obtained in cycle 4 have revealed a complex circumnuclear morphology of the line emitting gas with an apparent nuclear disk-like structure seen egde-on and oriented roughly perpendicular to the radio axis plus several ``spiral'' arms, arcs and other signatures of distributed ISM around the nucleus. We propose to obtain FOS spectra at three positions along the apparent nuclear disk revealed by the WFPC -2 images and one centered on the brightest extranuclear position located within the opening angle, but close to the edge of the ionization cone. The main goals of this study are: (1) to measure the kinematics of the nuclear disk from the velocity displacements and profiles of the emission lines at the nucleus and at two opposite sides which may allow us to obtain an estimate of the mass encircled in a small volume at the nucleus; (2) based on line ratios from a wide wavelenght range (in combination with ground-based imaging, spectroscopy and F-P measurements) to study the physical conditions in the line emitting gas both in the nuclear disk and in the EELR within the ionization cone. Questions ! Free format text (please update) Observing_Description: Selected FOS aperture positions are shown in Fig.\ 1. For estimating the exposure times we have used two independently obtained ground-bages spectra to flux calibrate our WFPC-2 H- alpha+N II\ image. To our satisfaction the two callibrations were differing by only ~10\ fluxes at the proposed FOS positions were then measured from the callibrated image and other emission lines were scaled according to ratios suggested by the spectra. (1) To study the kinematics of the emission line gas in the immediate vicinity of the nucleus of NGC5252 we propose to take FOS spectra of the three peaks in the nuclear disk seen on our WFPC2 images (Fig.\ 1). We will use the 0\as3 aperture and the G570H grating which covers the brightest emission lines - O Iii\ and H-alpha+N II. To assure a common wavelength scale we will take one or more wavelength calibration spectra. Estimated exposure times are set up to secure ~1000 counts in the H-alpha+N II\ line complex and somewhat more in the O Iii\ line. Experience with the analysis of the M87 spectra shows that this will allow us accurate velocity measurements and some evaluation of the profile. Without the overhead these times are: 1000 s (POS1), 1200 s (POS2), and 1600 s (POS3). (2) Physical conditions in the nuclear gaseous disk. To study the physical conditions in the nuclear gaseous disk we propose to obtain G400H, G270H, and G160L FOS/RD spectra at the position of the central peak. The appropriate exposure times are: 1000 s (G400H), 2400 s (G270H) and 2400 s (G160L). Combined with the kinematics measurements in (1) these require a total of 5 orbits. (3) To study the dominant energy supply mechanism in the EELR we propose to obtain UV spectra at the brightest off-nucleus position - POS4 in Fig.\ 1. We will use the 1\as0 FOS aperture (0\as86 in fact) since spatial resolution is not critical in this case. This will also helps in combining the FOS spectra with ground-based data. We plan to use the G160L and G270H gratings in combination with the FOS/RD detector. Like in the case of the nuclear positions we have measured the H-alpha+N II\ flux from our WFPC-2 image. Suggested exposure times are based on the ability to detect the primary discriminant line, C IV, as weak as 50\ require ~90 min (2 orbits) for the G160L grating at the off-nucleus position. We note here that the C IV\ line is redshited just enough to make it possible to use the red detector instead of the blue one. And finally, we have tested the acquisition of the target using a scaled version of our WFPC-2 images and the current-to-date binary serch FOS simulator. These tests have assured us that we can use an initial BS with a subsequent two stage peak-up to acquire the brightest nuclear peak in one orbit. The grand total request is therefore 8 orbits. Real_Time_Justification: None. We would like to stress again that our HST observations are stronly supported by an extensive ground-based work. We have already obtained narrow-band imaging, long-slit spectra at several position angles, and a detailed Fabry-Perot set of data. To these we will add a deep long slit spectrum down to the atmospheric cut-off of which includes our off-nucleus position. This will be used in combination with the FOS UV spectra to study the relative importance of different ionizing/excitation processes in the outflowing gas. Calibration_Justification: ! Move appropriate text from Real_Time_Justification Additional_Comments: Fixed_Targets ! Section 5.1 Target_Number: 1 Target_Name: NGC4486 Alternate_Names: M87 Description: GALAXY Position: RA=12H 30M 49.4286S +/- 0.3", DEC=+12D 23' 27.985" +/- 0.3", PLATE-ID=00IY Equinox: 2000 RV_or_Z: V=1200 Flux: V=16.7, E(B-V)=0.01 ! Include at least V and B-V Comments: Visits ! Section 6 Visit_Number: 1 Visit_Requirements: ! Section 7.1 On_Hold_Comments: Visit_Comments: Exposure_Number: 1 ! Section 6.5 Target_Name: NGC4486 Config: FOS/RD Opmode: ACQ/BINARY Aperture: 4.3 Sp_Element: MIRROR Wavelength: Optional_Parameters: BRIGHT=660000, FAINT=1320 Number_of_Iterations: 1 Time_Per_Exposure: 11S Special_Requirements: ONBOARD ACQ FOR 2 ! Section 7.2 Exposure_Number: 2 ! Section 6.5 Target_Name: NGC4486 Config: FOS/RD Opmode: ACQ/PEAK Aperture: 0.25-PAIR-A Sp_Element: MIRROR Wavelength: Optional_Parameters: SEARCH-SIZE-X=5, SEARCH-SIZE-Y=5, SCAN-STEP-X=0.15, SCAN-STEP-Y=0.15 Number_of_Iterations: 1 Time_Per_Exposure: 12S Special_Requirements: ONBOARD ACQ FOR 3 ! Section 7.2 Comments: Using STEP-PATT=SINGLE which is the default for ACQ/PEAK with the paired apertures. Exposure_Number: 3 ! Section 6.5 Target_Name: NGC4486 Config: FOS/RD Opmode: ACQ/PEAK Aperture: 0.25-PAIR-A Sp_Element: MIRROR Wavelength: Optional_Parameters: SEARCH-SIZE-X=3, SEARCH-SIZE-Y=3, SCAN-STEP-X=0.05, SCAN-STEP-Y=0.05 Number_of_Iterations: 1 Time_Per_Exposure: 12S Special_Requirements: ONBOARD ACQ FOR 4-10 ! Section 7.2 Comments: Using STEP-PATT=SINGLE which is the default for ACQ/PEAK with the paired apertures. Exposure_Number: 4 ! Section 6.5 Target_Name: NGC4486 Config: FOS/RD Opmode: ACCUM Aperture: 0.25-PAIR-A Sp_Element: G570H Optional_Parameters: STEP-PATT=SINGLE Number_of_Iterations: 1 Time_Per_Exposure: 2300S Exposure_Number: 5 ! Section 6.5 Target_Name: WAVE Config: FOS/RD Opmode: ACCUM Aperture: 0.25-PAIR-A Sp_Element: G570H Optional_Parameters: STEP-PATT=SINGLE Number_of_Iterations: 1 Time_Per_Exposure: DEF Exposure_Number: 6 ! Section 6.5 Target_Name: NGC4486 Config: FOS/RD Opmode: ACCUM Aperture: 0.25-PAIR-A Sp_Element: G400H Optional_Parameters: STEP-PATT=SINGLE Number_of_Iterations: 1 Time_Per_Exposure: 2300S Exposure_Number: 7 ! Section 6.5 Target_Name: WAVE Config: FOS/RD Opmode: ACCUM Aperture: 0.25-PAIR-A Sp_Element: G400H Optional_Parameters: STEP-PATT=SINGLE Number_of_Iterations: 1 Time_Per_Exposure: DEF Exposure_Number: 8 ! Section 6.5 Target_Name: NGC4486 Config: FOS/RD Opmode: ACCUM Aperture: 0.25-PAIR-A Sp_Element: G270H Optional_Parameters: STEP-PATT=SINGLE Number_of_Iterations: 1 Time_Per_Exposure: 2300S Exposure_Number: 9 ! Section 6.5 Target_Name: WAVE Config: FOS/RD Opmode: ACCUM Aperture: 0.25-PAIR-A Sp_Element: G270H Optional_Parameters: STEP-PATT=SINGLE Number_of_Iterations: 1 Time_Per_Exposure: DEF Exposure_Number: 10 ! Section 6.5 Target_Name: NGC4486 Config: FOS/BL Opmode: ACQ/PEAK Aperture: 0.25-PAIR-A Sp_Element: MIRROR Wavelength: Optional_Parameters: SEARCH-SIZE-X=5, SEARCH-SIZE-Y=5, SCAN-STEP-X=0.05, SCAN-STEP-Y=0.05 Number_of_Iterations: 1 Time_Per_Exposure: 20S Special_Requirements: ONBOARD ACQ FOR 11-14 ! Section 7.2 Comments: Using STEP-PATT=SINGLE which is the default for ACQ/PEAK with the paired apertures. Exposure_Number: 11 ! Section 6.5 Target_Name: NGC4486 Config: FOS/BL Opmode: ACCUM Aperture: 0.25-PAIR-A Sp_Element: G160L Optional_Parameters: STEP-PATT=SINGLE Number_of_Iterations: 1 Time_Per_Exposure: 400S Exposure_Number: 12 ! Section 6.5 Target_Name: WAVE Config: FOS/BL Opmode: ACCUM Aperture: 0.25-PAIR-A Sp_Element: G160L Optional_Parameters: STEP-PATT=SINGLE Number_of_Iterations: 1 Time_Per_Exposure: DEF Exposure_Number: 13 ! Section 6.5 Target_Name: NGC4486 Config: FOS/BL Opmode: ACCUM Aperture: 0.25-PAIR-A Sp_Element: G160L Optional_Parameters: STEP-PATT=SINGLE Number_of_Iterations: 1 Time_Per_Exposure: 2300S Exposure_Number: 14 ! Section 6.5 Target_Name: WAVE Config: FOS/BL Opmode: ACCUM Aperture: 0.25-PAIR-A Sp_Element: G160L Optional_Parameters: STEP-PATT=SINGLE Number_of_Iterations: 1 Time_Per_Exposure: DEF ! Uncomment or copy exposure level special requirements needed ! INTeractive ACQuisition FOR ! ONBOARD ACQuisition FOR ! POSition TARGet , ! SAME POSition AS ! DO FOR TARGets ! FGS only ! PARallel WITH ! GROUP-FGS WITHIN