The Distance to CL0016+16 and the Hubble Constant
Abstract
We use ROSAT and ASCA X-ray data and Sunyaev-Zel'dovich effect data from the Owens Valley Radio Observatory to estimate the distance to the rich, distant (z=0.5455) cluster of galaxies CL0016+16. We study the sensitivity of the derived value of the Hubble constant to various assumptions about the form of the cluster's three-dimensional density distribution. Specifically we consider (1) spherically symmetric isothermal-beta models, (2) purely elliptical isothermal-beta models, and (3) a deprojection of elliptical isophotes fitted to the ROSAT PSPC data. Results are given for prolate vs. oblate geometries as well as arbitrary line-of-sight inclination angles.
- Publication:
-
American Astronomical Society Meeting Abstracts
- Pub Date:
- December 1995
- Bibcode:
- 1995AAS...187.0802H