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Proposal Identification No.: A2215 Date Received: 2006­Feb­01 15:35:18
Technical Page
Proposal Type: Regular
General Category: Astronomy
Sub­Category: Spectroscopy
Observation Category: Extragalactic
Total Time Requested: 20 Hours
Proposal Title: ALFALFA Follow--up: Enigmatic Virgo Clouds
ABSTRACT:
The ALFALFA survey has detected several HI cloud complexes without optical counterparts in the periphery of the
Virgo cluster, near the outer boundary of the hot X­ray emitting gas. The extensive HI distribution, high
Virgocentric velocity, and possible connection to nearby Virgo spirals suggests that these may be dramatic
examples of galaxy harassment, possibly combined with ram pressure stripping. To complement the ALFALFA
survey observations, we request here a small amount of telescope time with LBW designed to corroborate the
ALFALFA findings.
Name Institution E­mail Phone Student
riccardo giovanelli cornell university riccardo@astro.cornell.edu 607­255­6505 no
Service Observing Request Remot e Observing Request
X None No
All of the observing run. X Maybe
Part of the observing run. Yes
Queue Observing
Instrument Setup
L­wide
Atmospheric Observation Instruments:
Special Equipment or setup: none
RFI Considerations
Frequency Ranges Planned
1