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Cepheid binaries with large mass ratios (m1/m2)
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Evans, Nancy Remage |
| Copyright Year | 1988 |
| Description | The IUE observations of 3 Cepheid systems (Polaris, FF Aql, and S Sge) are used to derive, or set limits on, the temperatures and masses of the companions. Light from the companions of FF Aql and S Sge from 1700 to 2000 A is consistent with an A5 to A7 main sequence companion for both Cepheids, with a mass of 1.8 solar mass. This mass for the companion of S Sge is smaller than required by the orbital mass function and an evolutionary mass of the Cepheid, suggesting that the companion may itself be a binary. For Polaris, the mass of the companion must be less than 1.8 solar mass. |
| File Size | 112251 |
| Page Count | 3 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19890001356 |
| Archival Resource Key | ark:/13960/t05x76z48 |
| Language | English |
| Publisher Date | 1988-06-01 |
| Access Restriction | Open |
| Subject Keyword | Astronomy Stellar Temperature Star Formation Stellar Mass Spaceborne Astronomy Ultraviolet Spectra Iue Mass Ratios Companion Stars Ultraviolet Astronomy Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
