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ATUC Meeting, 14 May 2009, Astro Issues Robert Braun

ATUC Meeting, 14 May 2009, Astro Issues Robert Braun. Recent Science Highlights. GASS: DRI δ ≤ +1, -400 < V LSR < +500 km/s 16 arcmin, 1 km/s, ΔT B ~ 57 mK ΔN HI (@ ΔV = 30 km/s) ~ 5 x 10 17 cm -2. Recent Science Highlights. Recent Science Highlights. GASS early science

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ATUC Meeting, 14 May 2009, Astro Issues Robert Braun

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  1. ATUC Meeting, 14 May 2009, Astro IssuesRobert Braun

  2. Recent Science Highlights GASS: DRI • δ ≤ +1, -400 < VLSR < +500 km/s • 16 arcmin, 1 km/s, ΔTB ~ 57 mK • ΔNHI (@ ΔV = 30 km/s) ~ 5 x 1017 cm-2 CSIRO ATUC, Astro Issues

  3. Recent Science Highlights CSIRO ATUC, Astro Issues

  4. Recent Science Highlights • GASS early science • Large population of small clouds: 30 pc, 600 MSun • Cloud-to-cloud dispersion of 18 km/s, scale-height 400 pc • Association with star-formation driven processes in spiral arms (SN, winds) CSIRO ATUC, Astro Issues

  5. Recent Science Highlights Parkes Methanol Multi-Beam Survey • Final observing just completed, first papers published CSIRO ATUC, Astro Issues

  6. Recent Science Highlights • Parkes MMB Survey • -2 < b < +2, -180 < l +60, Methanol 6668 & OH 6035 MHz • Deep Pulsar Piggyback region • ATCA or Merlin follow-up of new detections CSIRO ATUC, Astro Issues

  7. Recent Science Highlights • Parkes MMB Survey, early science • Detection of Methanol masers in both the near- and far 3 kpc spiral arms CSIRO ATUC, Astro Issues

  8. Recent Science Highlights First case of large-scale HI associated with an FRII CSIRO ATUC, Astro Issues

  9. Recent Science Highlights • First case of large-scale HI associated with an FRII • 2x109 MSun with ΔV ~ 850 km/s, implies MDyn ~3x1012sin-2i CSIRO ATUC, Astro Issues

  10. Recent Science Highlights • First case of large-scale HI associated with an FRII • 2x109 MSun with ΔV ~ 850 km/s, implies MDyn ~3x1012sin-2i • HI bridge of 400 kpc to gas-rich companion • Smoking gun of past/ongoing merger/interaction CSIRO ATUC, Astro Issues

  11. Recent Science Highlights • The most accurate pulsar distance determination to date • LBA trigonometric parallax of this P-WD binary achieves 1% precision CSIRO ATUC, Astro Issues

  12. Recent Science Highlights • The most accurate pulsar distance determination to date • LBA trigonometric parallax of this P-WD binary achieves 1% precision • Parallax distance, together with binary period derivative yield competitive (with prospects for improvement) constraint on time variability of G • Ġ/G = -5 +/- 26 x 1013 yr-1 • Constraint on stochastic GWB amplitude (~1 x 10-14) from timing vs. parallax distances comparable to best current limits CSIRO ATUC, Astro Issues

  13. Recent Science Highlights • The highest velocity “water fountain” yet seen • Total velocity spread of ~ 400 km/s seen from the 32 H2O maser spots seen in Mopra and ATCA data CSIRO ATUC, Astro Issues

  14. Recent Science Highlights • The highest velocity “water fountain” yet seen • Total velocity spread of ~ 400 km/s seen from the 32 H2O maser spots seen in Mopra and ATCA data • Spots confined to 0.3 arcsec region with some hint of red/blue splitting, but no strong collimation • Orientation unclear, but possible seen nearly along jet axis • Source possibly in phase where AGB and early PN winds collide CSIRO ATUC, Astro Issues

  15. Mopra Surveys Meeting Outcomes Mopra Surveys Meeting: Monday, 3 Nov 2008 • Discussion of science drivers for major Mopra surveys • See links below for more info: http://www.narrabri.atnf.csiro.au/mopra/Survey/SurveyMeeting.html http://www.atnf.csiro.au/research/surveys/mopra/discussion/index.php • Identified need for three distinct surveys • 3-mm Survey (~115 GHz) to trace Galactic Structure • 3-mm Survey (~90 GHz) to trace the chemistry and physical parameters of high-density regions (contact: Jim Jackson) • 7-mm Survey (42-50 GHz) to trace dense Galactic Structure (contact: Andrew Walsh) • Pilot proposals submitted in each area in Dec 08 • Plans for full proposal submission for Dec 09 CSIRO ATUC, Astro Issues

  16. Astro support of ASKAP Large Surveys Look to “ASKAP Update” item for details • 38 EoIs with 354 unique authors received 15 Dec 08 • 27 invitations to submit Survey proposals by 15 June 09 ATNF Astro support for large surveys • Aim for 0.5 – 1 FTE of post-doc support of each major survey area (depending on co-funding) • First two post-doc positions (with co-funding from CSIRO OCE) now advertised (close of 30 June 09) • Mapping the HI Universe • Exploring the Magnetic Universe • Plan for at least 2 – 3 more in coming 12 months • Depends on continued success of co-funding drive • Open invitation to community for joint positions CSIRO ATUC, Astro Issues

  17. Single Dish / Synthesis Schools Shift to annual (rather than every 2 – 3 years) school with alternating emphasis on Synthesis / Single Dish techniques • “Single Dish” emphasis School 2009 at Parkes • Week of 21 September? • Mike Keith taking the lead on organization with support from Phil Edwards & RB CSIRO ATUC, Astro Issues

  18. CABB issues ATCA is first array to enter the ultra-wide-fractional bandwidth regime with CABB’s 2 x 2 GHz • Fantastic new science opportunities • New calibration and imaging challenges • Non-negligible source SED and Primary Beam changes across the band • Shift to casapy or ASKAP software ? CSIRO ATUC, Astro Issues

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