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Morphological classification of post-AGB stars
| Content Provider | Scilit |
|---|---|
| Author | Manchado, Arturo García-Hernández, D. Anibal Villaver, Eva de Massas, Jean Guironnet |
| Copyright Year | 2011 |
| Description | We present a complete study of the morphology of post-Asymptotic Giant Branch (post-AGB) stars. The post-AGB stage is a very short evolutionary phase between the end of the AGB and the beginning of the Planetary Nebula (PN) stage (between 100 and 10,000 yrs). Post-AGB stars do not show variability and are not hot enough to fully ionize the hydrogen envelope. We have defined the end of the post-AGB phase and the beginning of the PN phase when the star has a temperature of 30000 K. Post-AGB stars have a circumstellar shell that is illuminated by the central stars or partially ionized. However, this circumstellar shell is too small to be resolved by ground-based observations. Thus, we have used the Hubble Space Telescope (HST) database to resolve these shells. 117 post-AGBs were found in this database. Here we present the preliminary results on their morphological classification and the correlation with the galactic latitude. Our preliminary results show that 38% of the sample are stellar-like (S), 31% bipolar (B), 12% multipolar (M) and 19% elliptical (E). |
| Related Links | https://www.cambridge.org/core/services/aop-cambridge-core/content/view/DC3AB9AAEF7D45A78A673A9B2F6F72F6/S1743921312010745a.pdf/div-class-title-morphological-classification-of-post-agb-stars-div.pdf |
| Ending Page | 86 |
| Page Count | 4 |
| Starting Page | 83 |
| ISSN | 17439213 |
| e-ISSN | 17439221 |
| DOI | 10.1017/s1743921312010745 |
| Journal | Proceedings of the International Astronomical Union |
| Issue Number | S283 |
| Volume Number | 7 |
| Language | English |
| Publisher | Cambridge University Press (CUP) |
| Publisher Date | 2011-07-01 |
| Access Restriction | Open |
| Subject Keyword | Proceedings of the International Astronomical Union Astronomy and Astrophysics agb Winds Circumstellar Matter |
| Content Type | Text |
| Resource Type | Article |
| Subject | Astronomy and Astrophysics Space and Planetary Science |
