Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/~astro/hiconference/hiconf_pdfs/aohi_mph3.pdf Дата изменения: Tue Feb 5 20:57:52 2008 Дата индексирования: Sun Apr 13 02:54:49 2008 Кодировка: Поисковые слова: п п п п п п п п п п п п

Science Discussion groups
· What can HI do uniquely? · What can HI do that is critical for multiwavelength studies? · Surveys vs PI-projects · Commensal observing · Full cost accounting: · Human resources · Data management/processing/distribution

Evolution of Galaxies through the HI Window
February 1-3, 2008

Martha Haynes (Cornell University)


Science Discussion groups
· Dark ages science/EOR (z > 6) · High redshift galaxies (z > 0.5) · Intermediate redshifts (0.25 -0.5) · Cosmic web, local DLAs · HI mass function · HI SF connection galaxy connection · DM Halo

· Near-near field: Milky Way/Local Group


Not one survey!
· Survey depth: BOTH rms and redshift need to match. · At low z, need to build volume by covering solid angle vs higher z, need to go deep/long integration. · Dwarf galaxies, detected nearby, need high spectral resolution vs redshift surveys which don't. · 99% of ALFALFA detections above 109.4 M have an optical counterpart => targeted surveys vs blind · Detection (catalog targets) => Characterize · Absorption not dependent on z. · "Survey speed" is not single metric; not all observations are surveys (at least at the beginning...). · John is right!


Practical challenges to "US"
· Need well defined survey science requirements · What surveys are needed to do what science? · Design surveys to optimize science · Mechanisms to prioritize/coordinate · Need to understand resource requirements of surveys · Survey results must be delivered on optimal schedule · Observing team support & software development · Automation + quality assurance · Data management, archiving, data products, access Data volumes are huge! · R&D for RFI mitigation/identification/excision · Timely and convenient delivery of data products to public archive · Permanent curation/delivery · Public access tools; visualization tools · How to engage and energize the community at large?!