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OCT 2 U 1988 TABLE of CONTENTS

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OCT 2 U 1988 TABLE of CONTENTS NATIONAL RADIO ASTRONOMY OBSERVATORY Quarterly Report July 1, 1988- September 30, 1988 OCT 2 u 1988 TABLE OF CONTENTS A. TELESCOPE USAGE .. .. B. 140-FT OBSERVING PROGRAMS C. 300-FT OBSERVING PROGRAMS D. 12-M OBSERVING PROGRAMS .. E. VLA OBSERVING PROGRAMS . .. F. SCIENTIFIC HIGHLIGHTS . .. ........ .......... .. 19 G. PUBLICATIONS ........... ... .... ............. 20 H. CHARLOTTESVILLE ELECTRONICS ........ 21 I. GREEN BANK ELECTRONICS . ........ 23 J. 12-M ELECTRONICS ....... ........ 25 K. VLA ELECTRONICS . .. ... .. .. ............0.. 25 L. AIPS ............ ...................... 29 M. VLA COMPUTER . .... .. ............. .... 29 N. VERY LONG BASELINE ARRAY .. ...... ........ ...... 30 0. PERSONNEL .............. 33 APPENDIX A. PREPRINTS A. TELESCOPE USAGE The NRAO telescopes have been scheduled for research and maintenance in the following manner during the third quarter of 1988. 140-ft 300-ft 12-m VLA Scheduled observing (hrs) 2018.00 1990.50 479.75 1,672.9 Scheduled maintenance and equipment changes 144.50 217.50 14.75 277.0 Scheduled tests and calibrations 45.50 0.00 1,713.50 264.2 Time lost 75.00 74.25 28.75 163.3 Actual Observing 1943.00 1916.25 451.00 1,509.6 B. 140-FT OBSERVING PROGRAMS The following continuum programs were conducted during this quarter. No. Observer(s) Programs F-97 Fich, M. (Waterloo) Measurements at 10 cm of the Silkey, M. (Washington) temperatures of distant galactic HII regions. The following line programs were conducted during this quarter. No. Observer(s) Programs A-88 Anantharamaiah, K. Observations at 6 cm to confirm a Radhakrishnan, V. (Raman) possible detection of positronium. Shukre, C. (Raman) A-89 Anantharamaiah, K. Search at 3.5 cm for fine structure Vivekanard, M. (IRAM) lines of positronium. Morris, D. (IRAM) Downes, D. (IRAM) Radhakrishnan, V. (Raman) B-493 Bania, T. (Boston) Measurements at 8.666 GHz of 3He+ Rood, R. (Virginia) emission in HII regions and planetary Wilson, T. (MPIR, Bonn) nebulae. No. Observer(s) Programs C-248 Crutcher, R. (Illinois) Zeeman observations of OH at 1665 and Goodman, A. (CFA) 1667 MHz. Heiles, C. (Berkeley) Kazes, I. (Meudon) Myers, P. (CFA) Troland, T. (Kentucky) L-220 Lubowich, D. (Hofstra) Search at 803.5 MHz for 7 Li (lithium) in Turner, B. the Galactic Center. Hobbs, L. (Yerkes) M-281 Magnani, L. (Arecibo) CH observations at 9 cm of IRAS infrared clouds. M-282 Magnani, L. (Arecibo) Observations at 9 cm of CH emission Lada, E. (Texas) from the molecular outflows of pre-main Sandell, G. (Manchester) sequence stars. M-283 Likkel, L. (UCLA) Monitor at 1.3 cm unusual H20 emission Morris, M. (UCLA) from two IRAS sources. Maddalena, R. M-284 Brown, R. (Monash Univ.) Time variability study at 1.5 cm of Godfrey, P. (Monash Univ.) ammonia masers. Henkel, C. (MPIR, Bonn) Irvine, W. (Massachusetts) Madden, S. (Massachusetts) Wilson, T. (MPIR, Bonn) Maddalena, R. T-217 Kazes, I. (Meudon) Search at 9 cm for CH in OH megamaser Turner, B. galaxies. T-248 Turner, B. Search for hyperfine CH lines at 702 and 724 MHz. W-236 Loren, R. (Texas) Mapping at 14.4885 GHz of two newly Wootten, H. A. discovered regions of H2CO emission in Rho Oph cloud cores. W-258 Mangum, J. (Virginia) Search at 14.7 GHz for c-C 3H in the Wootten, H. A. interstellar medium. Y-3 Yusef-Zadeh, F. (NASA) Search at discrete frequencies between Anantharamaiah, K. 4.7 and 7.2 GHz for recombination lines from the Galactic Center region. Observer(s) Programs Y-7 Yusef-Zadeh, F. (NASA) Search at 22.235 GHz for water vapor Maddalena, R. masers in selected regions of the Galactic Center. Z70 Zuckerman, B. (UCLA) Search at 18 cm for OH maser emission Maddalena, R. toward carbon stars. The following pulsar program was conducted during this quarter. No. Observer(s) Programs B-484 Backer, D. (Berkeley) Timing observations at 1400 MHz of Clifton, T. (Smith Assoc., UK) PSR 1821-24 and other submillisecond Foster, R. (Berkeley) pulsars. Kulkarni, S. (Caltech) Taylor, J. (Princeton) The following very long baseline programs were conducted, and the stations used for the observations are coded as follows: B Effelsburg, MPIR 1000 m Mb Itapetinga 20 m F Fort Davis 85 ft N NRL Maryland Pt. 85 ft Fb Fairbanks, Alaska 25 m 0 Owens Valley 130 ft G Green Bank 140 ft Pt Pietown 25 m H Hat Creek 85 ft R Crimea USSR 30 m Jb Jodrell Bank MK II 25 m Sa Shanghai 25 m Km Haystack 120 ft Sn Onsala 20 m Lm Medicina 32 m Yn Socorro n-=l-27x25 m M Nobeyama 45 m Z Torun 15 m Only the name of the principal observer is shown. No. Observer(s) Programs A-22V Alef, W. (MPIR, Bonn) Monitor at 2.8 cm of 3C 48 with telescopes B, F, G, H, Km, Lm, M, O, Pt, R, and Sa. A-H39V Witzel, A. (MPIR, Bonn) Fringe tests at 1.3 cm for phase referencing with telescopes B, G, J, Kin, Lm, N, O, Sn, and Yn. AH-41V Hewitt, J. (Haystack) Attempt at 3.6 cm to detect a gravi- tational lens source with telescopes B, G, and K. B-91V Bartel, N. (CFA) Observations at 3.6 cm of a supernova image with telescopes B, G, Km, O, Sn, and Yn. 4 No. Observer(s) Programs C-48V Claussen, M. (NRL) Protostellar kinematics measurements at 1.3 cm with telescopes G, Km, O, and Yn. G-59V Greenhill, L. (CFA) Measurements at 1.3 cm of the distance of M33 with telescopes B, J, Kin, M, 0, and Yn. H-41V Hooimeyer, J. (Leiden) Monitor at 2.8 cm of 1721+343 with telescopes B, F, G, H, Kin, Lm, and 0. H-45V Hough, D. (JPL) Measurements at 2.8 cm of the core of 3C 334 with telescopes B, F, G, Km, and 0. L-55V Lawrence, C. (Caltech) Survey at 1.3 cm of selected sources with telescopes B, G, Km, Lm, 0, Pt, Sn, and Yn. M-93V Marr, J. (Berkeley) Studies at 1.3 cm of NGC 1275 with telescopes B, G, J, Kin, Lm, N, O, Sn, and Yn. M-97V Marcaide, J. (Astrofisica, Studies at 1.3 and 2.8 cm of 4C 39.2 Spain) 5with telescopes B, F, G, H, Km, Lm, 0, Pt, and Z. N-15V Neff, S. (NASA) Pilot survey at 1.3 cm of NGC 1068 with telescopes B, G, Kin, 0, and Yn. N-17V Niell, A. (Haystack) Observations at 3.6 cm of AE Aquari with telescopes B, G, Din, and Yn. P-82V Pauliny-Toth, I. (MPIR, Bonn) Monitor at 2.8 cm of 2134+004 with telescopes B, F, G, Hm, K, Lm, O, and S. P-83V Pauliny-Toth, I. (MPIR, Bonn) Monitor at 2.8 cm of 30 454.3 with telescopes B, F, G, H, Kin, Lm, Mb, and 0. P-87V Porcas, R. (MPIR, Bonn) Observations at 3.6 cm of 0831+557 with telescopes B, F, G, H, K, L, 0, Pt, Sn, and Yn. S-78V Shaffer, D. (Interferometrics) Astrometry at 3.6 cm of CTD93 with telescopes F, Fb, G, H, Km, N, O, and Pt. W-45V Witzel, A. (MPIR, Bonn) Monitoring at 1.3 cm of 1928+738 with telescopes B, G, J, Kin, Lm, N, O, Sn, and Yn. No. Observer(s) Pro grams Z-12V Zensus, A. (Caltech) Measurements at 2.8 cm of 0821+62 with telescopes B, G, Kin, and O. C. 300-FT OBSERVING PROGRAMS The following continuum programs were conducted during this quarter. No. Observer(s) Programs A-082 Aller, H. (Michigan) Observations at 880, 1400, and 2700 MHz Aller, M. (Michigan) of low frequency variable sources. Payne, H. (STScl) B-506 O'Dea, C. (NFRA) Polarization and flux density Balonek, T. (Colgate) measurements of variable sources at Dent, W. (Massachusetts) 2695 MHz. Kinzel, W. (Massachusetts) B-507 Burke, B. (MIT) Observations at 5 GHz to extend the Conner, S. (MIT) MIT-Green Bank Survey from 6 = +37* to Heflin, M. (MIT) +510. Lehar, J. (MIT) Griffith, R. (MIT) The following line programs were conducted during this quarter. No. Observer(s) Programs H-242 Haynes, M. (Cornell) Hydrogen observations of SO galaxies in Herter, T. (Cornell) the local supercluster. H-243 Haynes, M. (Cornell) Hydrogen observations of Sc galaxies to Giovanelli, R. (Arecibo) measure deviations from the Hubble da Costa, L. (CNPq, Brazil) expansion. Mathewson, D. (Mt. Stromlo) Ford, V. (Mt. Stromlo) Barton, A. (Princeton) Benensohn, J. (Cornell) Schuster, P. (Cornell) K-313 Kerr, F. (Maryland) Further search for galaxies in the Zone Henning, P. (Maryland) of Avoidance by the study of HI. 6 No. Observer(s) Programs L-231 Lockman, F. J. Observations of galactic HI toward Bregman, J. supershells; observations of HI in McNamara, B. (Virginia) other galaxies that are strong X-ray Roberts, M. sources. Blitz, L. (Maryland) Gir, B. (Maryland) Rho, J. (Maryland) P-143 Petuchowski, S. (NASA) Search for highly redshifted OH at Bennett, C. (NASA) discrete frequencies between 500 and 1000 MHz. T-224 Tifft, W. (Arizona) Observations at 21 cm of quantization Cocke, W. (Arizona) and time variability in galaxy redshifts. The following SETI search, commensalate with other programs, was conducted during this quarter. No. Observer(s) Programs B-454 Backer, D. (Berkeley) Commensal SETI at any available Bowyer, S. (Berkeley) frequency. D. 12-M OBSERVING PROGRAMS The following line programs were conducted during this quarter. No. Observer(s) Programs D-162 Dent, W. (Massachusetts) Study of the evolution of extragalactic Balonek, T. (Colgate) radio sources at millimeter wavelengths. G-297 Grabelsky, D. (Northwestern) Search For CO (J-2-1) emission from cD Ulmer, M.
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