Page 1 PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only ID 4971c Report Date: 09-May-96:20:13 Version: ********** Check-in Date: ********** 1.Proposal Title: ACTIVE GALACTIC NUCLEI - CYC3HIGH ------------------------------------------------------------------------------------ 2. Scientific Category 3. Proposal For 4. Proposal Type 5. Continuation ID QUASARS & AGN GTO/HSP 1099 Sub Category ------------------------------------------------------------------------------------ 6. Principal Investigator Institution Country Telephone Robert C. Bless WISCONSIN, UNIVERSITY OF USA (608)262-1715 ------------------------------------------------------------------------------------ 7. Abstract The discovery of QSO's and (other) active galactic nuclei have radically altered the classical view of galactic evolution as a slow process occuring over cosmological time-scales. From the growing body of observations there are many varied theories developing to explain these highly energetic phenomena. To be successful, a theory must explain the large amplitude, rapid variations in both flux and polarization that characterize these objects. Variability in all parts of the spectrum has been observed, in some cases on time scales as short as minutes, placing constraints on the volume over which the phenomenon occurs. Observations on even shorter time scales would significantly affect these constraints. This program will monitor the intensity of the radiation emitted by AGN's and relate the results to the structure of their nuclei and the nature of their central power source. Revision History: Split from 3248--MJN 3/19/92; Added NGC6814 to proposal--BJW 4/29/92; ------------------------------------------------------------------------------------ 8. Scientific Key Words: QUASARS; BL LAC OBJECTS; ACTIVE GALACTIC NUCLEI ------------------------------------------------------------------------------------ 9. Est obs time (hours) pri: 2.95 par: 0 10. Num targs pri: 33 par: 0 ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ ------------------------------------------------------------------------------------ Page 2 I. GENERAL FORM Proposal 4971c PI: Robert C. Bless Proposal Title: ACTIVE GALACTIC NUCLEI - CYC3HIGH ------------------------------------------------------------------------------------ 1. Proposers: Proposers Institution Country ESA ------------------------------------------------------------------------------------ G. W. Van Citters NATIONAL SCIENCE FOUNDATION USA Robert C. Bless WISCONSIN, UNIVERSITY OF USA Joseph F. Dolan NASA, GODDARD SPACE FLIGHT USA CENTER James L. Elliot MASSACHUSETTS INSTITUTE OF USA TECHNOLOGY Edward L. Robinson TEXAS, UNIVERSITY OF USA Richard L. White SPACE TELESCOPE SCIENCE USA INSTITUTE ------------------------------------------------------------------------------------ 3. Description of proposed observations. The intensity of the radiation emitted by a BL Lac object or QSO will be monitored in a braod bandpass in the UV over a timescale of one second to 5 hours. Three of the four targets will be selected based on their visiblity in the CVZ for three orbits. The fourth target is not in the CVZ and should be observed for the maximum length of time in each of three consecutive orbits. The shortest timescales over which photometric fluctuations are observed to occur can be related to the maximum scales size of the emitting region. Fine lock should be used for these observations. ------------------------------------------------------------------------------------ 4. Justification of need for HST observations. (1) UV observations, accessible only to ST, are expected to reveal more information about the objects than observations in the visual region. The energy source is presumed to involve high energy phenomena; hence, the higher the energy of the photons one observes, the fewer intermediate steps are required between the energy source and the emission of the observed photon. Fewer intermediate steps imply that more direct inferences can be made about the energy source itself. ------------------------------------------------------------------------------------ 11. Address Information Name: ROBERT C. BLESS Category: PI Institution: UNIVERSITY OF WISCONSIN Address: UNIVERSITY OF WISCONSIN SPACE ASTRONOMY LAB. City: MADISON State: WI Zip Code: 53706 Country: USA Telephone: Telex (or e-mail): ------------------------------------------------------------------------------------ Name: JOSEPH F. DOLAN Category: CON Institution: NASA, GODDARD SPACE FLIGHT CENTER Address: CODE 681 City: GREENBELT State: MD Zip Code: 20771 Country: USA Telephone: (301)286-5920 Telex (or e-mail): 89675 ------------------------------------------------------------------------------------ TARGET LIST a) Fixed Targets ID = 4971c [ 3] ------------------------------------------------------------------------------------------------------------------------------------ 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 ------------------------------------------------------------------------------------------------------------------------------------ Tar| Target | Target | Target |Coord | Radial |Acqui|FLX| Flux data No | Name | Description | Position |Eqnx | Vel. |Prblm|REF| | | | | | | | | ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC6814 AGN RA = 19H 40M 11.38S +/- 2000 1 V=12.5 0.012S, DEC = -10D 25' 24.5" +/- 0.018" Comments: POSREF = MNRAS 197, P. 829. ------------------------------------------------------------------------------------------------------------------------------------ EXPOSURE LOGSHEET ID = 4971c [ 4] ------------------------------------------------------------------------------------------------------------------------------------ 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |10 | 11 | 12 |13 |14| 15 ------------------------------------------------------------------------------------------------------------------------------------ Line | Seq | Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | S/N |Flx|Pr| Special Number | Name | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| |Rel. Time|Ref| | Requirements ------------------------------------------------------------------------------------------------------------------------------------ 1 NGC6814 HSP/ ACQ 1 60S 15 1 1 ONBOARD ACQ FOR UV2 0.05S 1.5-44.000 SEQ 1.0-44.0 NO GAP CYCLE 3 / 1.000- 44.000 ------------------------------------------------------------------------------------------------------------------------------------ 1.5 NGC6814 HSP/ IMAGE 10.0 F140LP X-SIZE=29 1 841S 1 UV2 Y-SIZE=29 SPACING=0.25 DATA- FORMAT=WORD ------------------------------------------------------------------------------------------------------------------------------------ 43 NGC6814 HSP/ SINGLE 10.0 F140LP DATA- 40M 1 PHASE 0.0 +/- 0.1 UV2 FORMAT=WORD PERIOD SAMPLE-TIME=1.0 0.140416667D +/- 0.00002D ZERO- PHASE JD2448921.770359 + /- 0.001D ------------------------------------------------------------------------------------------------------------------------------------ 44 NGC6814 HSP/ SINGLE 10.0 F140LP DATA- 80M 1 UV2 FORMAT=WORD SAMPLE-TIME=1.0 Comments: SCHEDULE AS MUCH OBSERVING TIME IN EACH OF THREE CONSECUTIVE ORBITS AS POSSIBLE FOR LINES 43 ,44. ------------------------------------------------------------------------------------------------------------------------------------ Summary Form for Proposal 4971c [ 5] Item Used in this proposal ------------------------------------------------------------------------------------------------------------------------------------ Configurations HSP/UV2 ------------------------------------------------------------------------------------------------------------------------------------ Opmodes ACQ IMAGE SINGLE ------------------------------------------------------------------------------------------------------------------------------------ Optional Parameters X-SIZE=29 Y-SIZE=29 SPACING=0.25 DATA-FORMAT=WORD SAMPLE-TIME=1.0 ------------------------------------------------------------------------------------------------------------------------------------ Proposal for GTO/HSP ------------------------------------------------------------------------------------------------------------------------------------ S/C Hours 2.95 ------------------------------------------------------------------------------------------------------------------------------------ Scientific Category QUASARS & AGN ------------------------------------------------------------------------------------------------------------------------------------ Scientific Sub-category ------------------------------------------------------------------------------------------------------------------------------------ Special Requirements ONBOARD ACQ FOR 1.5-44.000; SEQ 1.0-44.0 NO GAP; CYCLE 3 / 1.000-44.000; PHASE 0.0 +/- 0.1; PERIOD 0.140416667D +/- 0.00002D; ZERO-PHASE JD2448921.770359 +/- 0.001D; ------------------------------------------------------------------------------------------------------------------------------------ Spectral Elements F140LP ------------------------------------------------------------------------------------------------------------------------------------ Target Names NGC6814 ------------------------------------------------------------------------------------------------------------------------------------