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Program Observer Program B406 M. H. T. B408 W. R. C. B417 R. Brown 8.00 2.25 8.75 0.00 4.75 3.75 0.75

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Program Observer Program B406 M. H. T. B408 W. R. C. B417 R. Brown 8.00 2.25 8.75 0.00 4.75 3.75 0.75 NATIONAL RADIO ASTRONOMY OBSERVATORY Charlottesville, Virginia Quarterly Report April 1, 1984 - June 30, 1984 RESEARCH PROGRAMS 140-foot Telescope Ho urs Scheduled observing 168 8.00 Scheduled maintenance and equipment changes 37 2.25 Scheduled tests and calibration 11 8.75 Time lost due to: equipment failure 3 0.00 power 4.75 weather 23.75 interference 0.75 The following continuum program was conducted during this quarter. No. Observer Program UI15 J. Uson (Princeton) Measurements at 19.5 GHz of the dec- D. Wilkinson (Princeton) rements in the cosmic microwave back- ground toward several clusters of galaxies. The following line programs were conducted during this quarter. No Observer Program B405 R. Brown Observations at 10 GHz to study the electron density in 3C 245. B406 M. Bell (Herzberg) Observations at 8000 MHz in search H. Matthews (Herzberg) of C6 H in TMC1. T. Sears (Herzberg) B408 W. Batrla Observations at 2 cm of H2 densities R. Gusten (MPIR, Bonn) in condensations of the Taurus dark C. Henkel (MPIR, Bonn) dust clouds and a search for CH 3 C6 H and CH 3 C5 N. B417 R. Brown Observations of Sgr A recombination lines at 5935 and 5990 MHz. No 6 Observer Program C217 F. Clark (Kentucky) Observations of the 1.3 cm NH3 S. Fulkerson (Centre College) transition to study the dynamics of S. Miller (Kentucky) clouds. D137 L. DeNoyer (Colgate) Observations of the galactic plane J. Dodd (Colgate) between 0 < 1 < 900 at 90 cm to determine rotation measures. G270 R. Gusten (MPIR, Bonn) Observations at 13.7 and 14.5 GHz of W. Batrla the ratio of 1 2 C to 13 C and H2 densi- C. Henkel (MPIR, Bonn) ties in the galactic center region. H199 L. Higgs (DRAO, Canada) Recombination-line observations at W. Batrla 6 cm toward BG 2107+49. J. Vallee (Herzberg) L159 F. J. Lockman A deep, systematic recombination-line survey at 3 cm of continuum sources in the galaxy. L188 F. J. Lockman Observations at 21 cm of high- J. Dickey (Minnesota) latitude galactic HI. L. Hobbs (Chicago) K. Jahoda (Wisconsin) D. McCammon (Wisconsin) C. Albert (Naval Academy) M222 H. Matthews (Herzberg) Observations at 2.8 cm of CH 3 CHO and P. Feldman (Herzberg) HC 5 N in the direction of Cas A. M. Bell (Herzberg) P128 H. Payne Observations at 18 cm of OH in Y. Terzian (Cornell) planetary nebulae. R207 R. Rood (Virginia) Observations at 8700 MHz of the T. Bania (Boston) hyperfine transition of 3 He+ in T. Wilson (MPIR, Bonn) several galactic HII regions and planetary nebulae. T181 B. Turner Observations at 1772 MHz to search for atomic sodium in dense molecular clouds. W180 R. Willson (Tufts) Observations at 9 cm of CH in the B. Scheufele (Tufts) direction of diffuse clouds. S. Federman (JPL) The following very long baseline programs were conducted, and the stations used in the observations are coded as follows: A - Arecibo 1000 ft N NRL Maryland Point 85 ft B - Effelsberg MPIR 100 m 0 Owens Valley 130 ft F - Fort Davis 85 ft (HRAS) P Penticton, B.C. 85 ft G - Green Bank 140 ft Sn Onsala 20 m H - Hat Creek 85 ft So Onsala 25 m Hr - Hartebeesthoek 26 m, S. Africa Wn Westerbork n = 1 - 14 x 26 m I - Iowa 60 ft (North Liberty) Yn Socorro n = 1 - 27 x 25 m Jb - Jodrell Bank MK II X Torun 15 min, Poland Km - Haystack 120 ft No. Observer Program B46V J. Broderick (VPI & SU) Observations at 6 cm of the super- A. Marscher (Boston) luminal, low-frequency, variable cquasar NRAO 140, with telescopes B, F, G, H, Kin, O, and Yn. B52V J. Biretta (Caltech) Observations at 6 cm of the super- M. Cohen (Caltech) luminal radio sources 3C 273, 3C 279, S. Unwin (Caltech) and 3C 345, with telescopes A, B, F, G, H, I, Kin, O, Sn, and Yn. B54V D. Backer (Berkeley) Observations at 6 cm of compact R. Sramek sources near Sgr A, with telescopes F, G, H, and Yn. B56V N. Bartel (CFA) Observations at 18 cm of SN 1979c, with telescopes B, G, O, and Yn. D4V P. Diamond (Chalmers) Observations at 6 cm of the "flip- D. Robson (Manchester) flop" radio galaxy 3C 133, with telescopes B, G, Kin, O, Wn, and Yn. G41V M. Gorenstein (CFA) Observations at 18 cm of 2016+112A, C. Bennett (MIT) B, C, with telescopes A, B, F, G, Km, R. Bonometti (MIT) O, and Yn. B. Burke (MIT) J. Hewitt (MIT) C. Lawrence (Caltech) J. Marcaide (MPIR, Bonn) I. Shapiro (CFA) K15V H. Kuhr (Arizona) Observations at 6 cm of 0014+81--a A. Eckart (MPIR, Bonn) gravitations lens--with telesopes B, P. Strittmatter (Arizona) G, Jb, 0, Sn, Wn, and X. A. Witzel (MPIR, Bonn) M53V A. Marscher (Boston) Observations at 18 cm of the low- N. Bartel (CFA) frequency variable NRAO 140, with J. Broderick (VPI & SU) telescopes B, F, G, H, I, Kin, 0, and L. Padrielli (Bologna) Yn. J. Romney No. Observer Program P48V L. Padrielli (Bologna) Observations at 18 cm of the steep R. Fanti (Bologna) spectrum source 1524-136, with tele- A. Ficarra (Bologna) scopes B, F, G, Jb, Km, O, So, and Wn. F. Mantovani (Bologna) I. Browne (Manchester) J. Romney P54V R. Porcas (MPIR, Bonn) Observations at 6 and 18 cm of I. Pauliny-Toth (MPIR, Bonn) PKS 2134+004, with telescopes B, F, G, G. Nicolson (Hartebeesthoek, H, Hr, Kin, and 0. Africa) K. Kellermann P55V R. Porcas (MPIR, Bonn) F. Owen Observations at 6 cm of very weak quasar cores, with telescopes B, G, and Yn. P58V T. Pearson (Caltech) A. Readhead (Caltech) Second-epoch observations at 6 cm of a complete sample of 20 sources, with telescopes B, F, G, H, I, Kin, 0, and Yn. R29V R. Rusk (Toronto) E. Seaquist (Toronto) Observations at 2.8 and 18 cm of J. Yen (Toronto) highly polarized, compact radio sources, with telescopes B, F, G, H, I, Kin, 0, P, and Yn. S35V R. Schilizzi (NFRA) G. Miley (Leiden) Observations at 18 cm of 3C 236, with P. Barthel (Leiden) telescopes of the European Network, Merlin, A, F, G, H, I, Kin, 0, N, and Yn. S36V R. Spencer (Manchester) M. Reid (CFA) Observations at 18 cm of 3C 274, with telescopes of the European Network, Merlin, A, F, G, H, I, Kin, 0, and Yn. W23V R. C. Walker J. Benson Monitor 3C 120 at 6 cm, with tele- G. Seielstad scopes A, B, F, G, H, I, Kin, 0, Sn, S. Unwin (Caltech) and Yn. W26V P. Wilkinson A. Kus (Torun Obs., Poland) Detailed mapping at 6 cm of the inter- T. Pearson (Caltech) acting QSO system 3C 48, with tele- A. Readhead (Caltech) scopes A, B, F, G, I, Jb, Kmin,0, Sn, R. Simon (NRL) and Wn. M. Chown (Caltech) No. Observer Program W30V P. Wilkinson Observations at 18 cm of 3C 48, with A. Readhead (Caltech) telescopes of the European Network, R. Simon (NRL) Merlin, A, F, G, H, I, Kin, O, and Yn. M. Chown (Caltech) W31 R. C. Walker Observations at 18 cm of the 3C 120 S. Unwin (Caltech) jet with telescopes of the European J. Benson Network, Merlin, A, F, G, H, I, Kin, 0, G. Se ielstad and Yn. R. Booth (Chalmers) X24V N. Bartel (CFA) Observations at 6 cm of the supernova SN 1979c, with telescopes B, G, O, and Yn. 300-foot Telescope Hours Scheduled observing 1935.50 Scheduled maintenance and equipment changes 234.50 Scheduled tests and calibration 6.00 Time lost due to: equipment failure 26.50 power 3.75 weather 0.50 interference 0.00 The following continuum programs were conducted during this quarter. No. Observer Program A59 H. Aller (Michigan) Observations at 1400 MHz of low- M. Aller (Michigan) frequency variable sources selected R. Fanti (Bologna) from the Bologna-Michigan program. A. Ficarra (Bologna) F. Mantovani (Bologna) L. Padrielli (Bologna) B412 B. Burke (MIT) Observations at 6 cm to continue the J. Hewitt (MIT) MIT-Green Bank survey at 6 = 20 ° < G. Langston (MIT) < 450. J. Mahoney (MIT) 8415 J. Broderick (VPI & SU) Monitor of low-frequency variable D. Altschuler (Puerto Rico) sources at 611, 800 and 1400 MHz. B. Dennison (VPI & SU) K. Mitchell (VPI & SU) S. O'Dell (VPI & SU) J. Condon H. Payne No. Observer Program D138 G. Dulk (Colorado) Observations of the quiet sun at T. Bastian (Colorado) 1415 MHz in conjunction with the VLA and an EUV rocket. 032 C. O'Dea Polarization and flux-density measure- T. Balonek (Williams College) ments of variable sources at 2695 MHz. W. Dent (Massachusetts) W. Kinzel (Massachusetts) 033 S. Odenwald (NRL) Observations at 5000 MHz to study a sample of 40 sources that have been identified by the Far Infrared Sky Survey experiment. The following line programs were conducted during this quarter. No. Observer Program B409 W. Baan (Arecibo) Observations at 18 cm of OH absorption A. Haschick (Haystack) and anomalous emission in galaxies J. Schmelz (Penn State) with strong continuum sources. L188 F. J. Lockman Observations at 21 cm of high-latitude C. Albert (Naval Academy) galactic HI. J. Dickey (Minnesota) L. Hobbs (Chicago) K. Jahoda (Wisconsin) D. McCammon (Wisconsin) T180 B. Turner Search over the range 700-725 MHz for L. Ziurys (Berkeley) the w3/2, J = 3/2 multiplet of CH. T183 W. Tifft (Arizona) Observations at 21 cm of redshift W. Cocke (Arizona) periodicities in single and double galaxies. The following pulsar program was conducted during this quarter. No. Observer Program T178 J.
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