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X ray studies of the hyades cluster
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Stern, Robert A. |
| Copyright Year | 1993 |
| Description | The Hyades cluster occupies a unique position in both the history of astronomy and at the frontiers of contemporary astronomical research. At a distance of only 45 pc, the Hyades is the nearest star cluster in the Galaxy which is localized in the sky: the UMa cluster, which is closer, but much sparser, essentially surrounds the Solar neighborhood. The Hyades is the prototype cluster for distance determination using the 'moving-cluster' method, and thus serves to define the zero-age main sequence from which the cosmic distance scale is essentially bootstrapped. The Hyades age (0.6-0.7 Gyr), nearly 8 times younger than the Sun, guarantees the Hyades critical importance to studies of stellar evolution. The results of a complete survey of the Hyades cluster using the ROSAT All Sky Survey (RASS) are reported. |
| File Size | 726137 |
| Page Count | 23 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19940024498 |
| Archival Resource Key | ark:/13960/t6vx58p91 |
| Language | English |
| Publisher Date | 1993-10-08 |
| Access Restriction | Open |
| Subject Keyword | Astronomy Rosat Mission Position Location Sky Surveys Astronomy X Ray Astronomy Star Clusters Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
