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National Radio Astronomy Observatory Quarterly NATIONAL RADIO ASTRONOMY OBSERVATORY QUARTERLY REPORT April 1 - June 30, 1998 TABLE OF CONTENTS A. TELESCOPE USAGE ................................................................. 1 B. 140 FOOT OBSERVING PROGRAMS ................................................... 1 C. 12 METER TELESCOPE OBSERVING PROGRAMS ......................................... 3 D. VERY LARGE ARRAY OBSERVING PROGRAMS .................... ..................... 7 E. VERY LONG BASELINE ARRAY OBSERVING PROGRAMS ................................. 19 F. SCIENCE HIGHLIGHTS ............................................................ 28 G. PUBLICATIONS................................................................... 28 H. CHARLOTTESVILLE ELECTRONICS ................................................. 28 I. GREEN BANK ELECTRONICS ....................................................... 30 J. TUCSON ELECTRONICS ........................................................... 31 K. SOCORRO ELECTRONICS ................... ........................................ 33 L. COMPUTING AND AIPS ............................................................. 36 M. AIPS++ PROJECT ................................................................ 39 N. GREEN BANK TELESCOPE ......................................................... 41 0. MILLIMETER ARRAY PROJECT ....................................................... 44 P. PERSONNEL..................................................................... 44 APPENDIX A. PREPRINTS A. TELESCOPE USAGE The following telescopes have been scheduled for research and maintenance in the following manner during the second quarter of 1998. 140 Foot 12 Meter VLA VLBA Scheduled Observing (hrs) 1853.75 1912.25 1720.20 1333.00 Scheduled Maintenance and Equipment Changes 152.00 108.25 217.40 311.00 Scheduled Tests and Calibration 74.25 159.25 251.50 273.00 Time Lost 41.00 115.25 63.65 40.00 Actual Observing 1812.75 1797.00 1656.55 1293.00 B. 140 FOOT OBSERVING PROGRAMS The following line programs were conducted during this quarter. No. Observer(s) Program B654 Barnbaum, C. (STScI) Monitoring OH associated with the extraordinary star, U Equ. Morris, M. (UCLA) Omont, A. (IAP, Paris) B662 Balser, D. (Boston) Measurements of ionized carbon in the Milky Way. Bania, T. (Boston) Huang, M. (Boston) Shah, R. (Virginia) Rood, R. (Virginia) Jackson, J. (Boston) B677 Balser, D. S-band observations of diffuse low surface brightness HII Lockman, F. J. regions. B680 Bourke, T. (CfA) OH Zeeman observations of northern molecular clouds. Myers, P. (CfA) Robinson, G. (New South Wales) Hyland, H. (Southern Cross University) Lockman, F. J. 21 cm HI mapping of the galactic plane. L319 Murphy, E. (Johns Hopkins) L332 Langston, G. Search for H20, HCN, and CO high redshift absorption lines. Brown, R. No. Observer(s) Program M411 Murphy, E. (Johns Hopkins) A 21 cm deep map of high velocity cloud complex M. Sembach, K. (Johns Hopkins) Benjamin, R. (Minnesota) M416 Mauersberger, R. (Arizona) A search for a new, strong A-type methanol maser. Rollig, M. (Frankfurt) Kegel, W. (Frankfurt) SETI Tarter, J. (SETI) Project Phoenix. T370 Turner, B. A search for OH in the Polaris flare. W398 Wootten, H. A. Water maser monitoring of low-luminosity young stellar objects. Claussen, M. Wilking, B. (Missouri) Y021 Young, L. (New Mexico State) A search for HI in and around four dwarf spheroidal galaxies. Gallagher, J. (Wisconsin) Bomans, D. (Illinois) Smecker-Hane, T. (UC, Irvine) Homeir, N. (Wisconsin) The following pulsar programs were conducted during this quarter. No. Observer(s) Program Al118 Arzoumanian, Z. (Cornell) Bimonthly timing of 63 pulsars at 500 and 800 MHz. Taylor, J. (Princeton) Nice, D. (Princeton) A132 Arzoumanian, Z. (Cornell) Monitoring at 575 MHz of the evolution of the PSR B 1957+20 Nice, D. (Princeton) eclipsing binary system. A133 Arzoumanian, Z. (Cornell) Measuring relativistic effects in binary pulsar systems. B687 Backer, D. (UC, Berkeley) A pulsar timing array. Somer, A. (UC, Berkeley) Sallmen, S. (UC, Berkeley) Foster, R. (NRL) N018 Nice, D. (Princeton) Monitoring the irregularities in the rotation and orbital motion Thorsett, S. (Princeton) of an eclipsing binary pulsar, B1744-24A. N019 Nice, D. (Princeton) Mass and proper motion measurements of three binary pulsars at 350-370 MHz. The following very long baseline programs were conducted this quarter. No. Observer(s) Program BC066 Claussen, M., et al. Water maser:s in elliptical galaxy NGC 1052. BS061 Satoh, S., et al. HI and OH at)sorption toward the nucleus region of NGC 3079. V030 Preston, R. (JPL), et al. The Pearson- Readhead survey from space. V090 Kus, A. (Copernicus/Torun) CSS source 3C 309.1.6 cm V123 Kameno, S. (NAO, Japan) Cygnus A. V327 Werhle, A. (Caltech) VSOP observ ations of J1602+33. VS04 Hirabayshi, H. (ISAS, Japan) VSOP surveyr. VS06 C. 12 METER TELESCOPE OBSERVING PROGRAMS The following line programs were conducted during this quarter. No. Observer(s) Program B688 Butner, H. (Arizona) Study of deuterium chemistry in Class O sources. Charnley, S. (NASA/Ames) C316 Clancy, R. T. (SSI, Boulder) Mars climate studies and spacecraft support. Sandor, B. (JPL) C318 Crosthwaite, L. (UCLA) Large scale CO mapping of M83. Turner, J. (UCLA) Martin, R. (Arizona) Ho, P. (CfA) C319 Carey, S. (Hanscom/AFGL) Study of physical properties of MSX dark clouds. Egan, M. (Hanscom/AFGL) Shipman, R. (Hanscom/AFGL) Clark, F. (Hanscom/AFGL) CB11 Bower, G. (MPIR, Bonn) Continued monitoring and polarimetric imaging of NRAO 530: Backer, D. (UC, Berkeley) a decelerating, subluminal gamma ray blazar. Wright, M. (UC, Berkeley) CB12 Bower, G. (MPIR, Bonn) Do EGRET blazars differ from other flat-spectrum radio Krichbaum, T. (MPIR, Bonn) sources? Zenzus, J. A. CB13 Boboltz, D. (Haystack) Observations of the 86 GHz SiO maser emission in the Diamond, P. circumstellar envelopes of two symbiotic Miras. No. Observer(s) Program CDO7 Doeleman, S. (Haystack) 86 GHz imaging of the SiO masers in VX Sgr. Lonsdale, C. (Haystack) Greenhill, L. (CfA) Kemball, A. Diamond, P. CJO3 Junor, W. (New Mexico) Close to the edge: within 30rg of the supermassive core of M87. Biretta, J. (STScI) CK05 Krichbaum, T. (MPIR, Bonn) Polarization imaging of 3C454.3 and 3C279 at 86 GHz. Graham, D. (MPIR, Bonn) Alef, W. (MPIR, Bonn) Witzel, A. (MPIR, Bonn) Greve, A. (IRAM) Grewing, M. (IRAM) Wardle, J. (Brandeis) Roberts, D. (Brandeis) Brown, L. (Connecticut) Holdaway, M. Zenzus, J. A. CKO6 Krichbaum, T. (MPIR, Bonn) 86 GHz VLBI monitoring of BL Lac after a major optical Graham, D. (MPIR, Bonn) outburst. Kraus, A. (MPIR, Bonn) Witzel, A. (MPIR, Bonn) Greve, A. (IRAM) Ungerechts, H. (IRAM) Grewing, M. (IRAM) Phillips, R. (Haystack) CKO7 Krichbaum, T. (MPIR, Bonn) Broad-band variability and jet-bending in PK 0528+134. Britzen, S. (MPIR, Bonn) Bower, G. (MPIR, Bonn) Witzel, A. (MPIR, Bonn) Zenzus, J. A. CR05 Rantakyro, F. (Bologna) Investigation of the rapid structural variability in CTA 102. BfAth, L. (Halmstad U.) CR06 Rantakyro, F. (Bologna) Continuing millimeter VLBI plus VSOP monitoring of 3C273 Conway, J. (Chalmers, Onsala) and 3C279. Bath, L. (Halmstad U.) Booth, R. (Chalmers, Onsala) CW2 Wiik, J. (ESTEC) Target of opportunity 0235+164. No. Observer(s) Program D196 Dickens, J. (Massachusetts) The c-C 2H40/CH3CHO abundance ratio in molecular cloud Irvine, W. (Massachusetts) cores. Ohishi, M. (Nobeyama Obs.) Ikeda, M. (Tokyo U.) Hjalmarson, A. (Chalmers, Onsala) Nummelin, A. (Chalmers, Onsala) G366 Gensheimer, P. (MPIR, Bonn) Search for SiC 2 in Sgr B2. Ziurys, L. (Arizona) Wilson, T. (MPIR, Bonn) G369 Gruendl, R. (Illinois) Full synthesis imaging of CO (1-0) emission in ARP 244. Gao, Y. (Illinois) Lo, K.Y. (Illinois) Hwang, C-Y. (SA/IAA, Taiwan) G371 Gruendl, R. (Illinois) Study of CO (1-0) in NGC 2359. H326 Hunter, T. (CfA) Search for outflows from high-mass protostellar candidates. Sridharan, T. (CfA) Cesaroni, R. (Arcetri) Palla, F. (Arcetri) Zhang, Q. (CfA) Brand, J. (Bologna) Molinari, S. (Bologna) H327 Hunter, D. (Lowell Obs.) Study to determine the extent of molecular gas around the Walker, C. E. (Arizona) irregular galaxy NGC 4449. H329 Helfer, T. Zero-spacing data for BIMA observations of nearby galaxies. Thornley, M. (MPIfEP, Garching) Regan, M. (DTM/Carnegie) Sheth, K. (Maryland) Vogel, S. (Maryland) Wong, T. (UC, Berkeley) Blitz, L. (UC, Berkeley) 120 Ikeda, M. (Tokyo U.) Study of variation of isotope abundances in local cloud Hiroto, T. (Tokyo U.) complexes. Yamamoto, S. (Tokyo U.) K359 Kuan, Y.J. (SAIIAA, Taiwan) Gas-grain and alcohol chemistry (II): search for interstellar Wilson, T. (MPIR, Bonn) complex organic molecules. Charnley, S. (NASA/Ames) Ohishi, M. (Nobeyama Obs.) Snyder, L. (Illinois) No. Observer(s) Program K360 Krichbaum, T. (MPIR, Bonn) 1.3 mm and 2 mm VLBI: Sgr A* and bright AGN. Graham, D. (MPIR, Bonn) Doeleman, S. (Haystack) Marvel, K. (Caltech) Wright, M. (UC, Berkeley) Greve, A. (IRAM) Grewing, M. (IRAM) Emerson, D. Freund, R. L333 Lee, C. (CfA) An unbiased survey for infall motions in starless cores. Myers, P. (CfA) L334 Larsen, F. (Stockholm Obs.) The circumstellar envelopes of carbon stars: mass-loss rates and Olofsson, H. (Stockholm Obs.) molecular abundances. Eriksson, K. (Uppsala Obs.) Gustafsson, B. (Uppsala Obs.) M415 Mangum, J. A survey of outflows in protostars. Bontemps, (Stockholm Obs.) Andr6, P. (CEA/DSM, France) M418 Mauersberger, R. (Arizona) Study of interstellar 36S:. a probe of the s-process in C-stars. Henkel, C. (MPIR, Bonn) Langer, N. (MPIfEP, Garching) Chin, Y. (SAIIAA, Taiwan) M419 Minter, A. Detecting the Jean's
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