Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.naic.edu/vscience/schedule/tpfiles/RosetagA1915tp.ps Дата изменения: Tue May 25 19:58:50 2004 Дата индексирования: Sat Dec 22 20:35:35 2007 Кодировка: Поисковые слова: п п п п п п п п п п п п п

Proposal Identification No.: A1915 Date Received: 2004­Jan­30 19:15:42
Technical Page
Proposal Type: Regular
General Category: Astronomy
Sub­Category: Spectroscopy
Observation Category: Extragalactic
Total Time Requested: 4.0 Hours
Proposal Title: The E#ect of Cluster Environment on Galaxy Evolution in the Core Pegasus I
Cluster.
ABSTRACT:
The Pegasus cluster o#ers a most unusual environment in which to study the star formation histories of its
members. Several galaxies exhibit signs of HI deficiency, indicative of ongoing ram pressure e#ects. This is
surprising, since Pegasus is considered an environment where ram pressure stripping should not be operating. We
have previously obtained HI profiles of 48 galaxies with the Arecibo telescope. Here we propose Arecibo
observations of the HI content of 9 more galaxies, to create a complete sample of the spiral galaxies withinin 1 RA
in the core Pegasus I cluster. These observations will help clarify how the cluster environment is a#ecting the
evolution of its member galaxies.
Name Institution E­mail Phone Student
James A. Rose University of North
Carolina at Chapel
Hill
jim@physics.unc.edu 919­962­7170 no
Service Observing Request Remot e Observing Request
None No
X All of the observing run. X Maybe
Part of the observing run. Yes
Queue Observing
Instrument Setup
L­narrow
Atmospheric Observation Instruments:
Special Equipment or setup: none
RFI Considerations
1

Frequency Ranges Planned
1400­1420
2