SUMMARY OF SEQUENCE NUMBER 800076
SUMMARY OF SEQUENCE NUMBER 800076
Title: IRON LINE SPECTROSCOPY OF CLUSTERS OF GALAXIES
Observer: KAASTRA
Subject Category: Clusters of Galaxies
Seq: 800076 ObsId: 00900
Long-term Plan bin: no LTS bin
ABSTRACT
We propose to study optical depth effects in bright clusters of galaxies using AXAF's ACIS detector. The optical depth for resonance scattering of a few strong Fe-K and Fe-L lines is larger than unity for our targets A 496, MKW3s and A S1101. This allows us to directly measure ionic column densities. Combining these with ionic volume emission measures allows a determination of the Hubble constant, or limits to the turbulence in the cooling flow. The deep exposures that are required allow also the spatial and spectral study of inhomogeneities in the cooling flow on a scale of 10 arcsec.
TARGET SUMMARY
| TARGET NAME |
RA | DEC |
TIME |
SI |
GRAT |
TYPE |
TC |
ROLL |
PRE |
PHASE |
MULTI |
PRI |
| MKW 3S |
230.466250 | 7.708889 |
60.00000 |
ACIS-I |
NONE |
GO |
no |
no |
no |
no |
no |
5 |
IMAGES
(NOTE: RASS images currently only available for targets LTS scheduled on or after Apr-09-2000)
PARAMETERS
Obscat Parameters
