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Conference Paper: Planetary and Proto-Planetary Nebulae which are Strong 25µm Emitters
| Title | Planetary and Proto-Planetary Nebulae which are Strong 25µm Emitters |
|---|---|
| Authors | |
| Issue Date | 1-Jul-1993 |
| Abstract | The IRAS Point Source Catalogue containing about 250,000 sources has yielded a large number of previously unknown planetary nebulae (PNe) and a smaller number of proto-planetary nebulae (PPNe). The spectral energy distributions for many of these objects peak at or close to 25µm. A program to optically identify sources in the complete IRAS Faint Source Database, which comprises about 750,000 sources, is currently under way (Wolstencroft et al. 1991), and in a related study Wolstencroft, Parker & Lonsdale are carrying out a spectroscopic survey of a small sample of the approximately 106,000 sources which either peak or are detected only at 25µm. So far spectra of 150 sources have been obtained: 3 of these sources are PNe and 1 is a PPNe. This suggests that this sample of 25µm emitters may be a rich source of new PNe and PPNe. In this note we discuss two of these four sources. |
| Persistent Identifier | http://hdl.handle.net/10722/342946 |
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Wolstencroft Ronald, D | - |
| dc.contributor.author | Agnes Read, M | - |
| dc.contributor.author | Scarrott, S M | - |
| dc.contributor.author | Lonsdale, C J | - |
| dc.contributor.author | Parker, Q | - |
| dc.date.accessioned | 2024-05-08T02:52:52Z | - |
| dc.date.available | 2024-05-08T02:52:52Z | - |
| dc.date.issued | 1993-07-01 | - |
| dc.identifier.uri | http://hdl.handle.net/10722/342946 | - |
| dc.description.abstract | <p>The IRAS Point Source Catalogue containing about 250,000 sources has yielded a large number of previously unknown planetary nebulae (PNe) and a smaller number of proto-planetary nebulae (PPNe). The spectral energy distributions for many of these objects peak at or close to 25<em>µ</em>m. A program to optically identify sources in the complete IRAS Faint Source Database, which comprises about 750,000 sources, is currently under way (Wolstencroft et al. 1991), and in a related study Wolstencroft, Parker & Lonsdale are carrying out a spectroscopic survey of a small sample of the approximately 106,000 sources which either peak or are detected only at 25<em>µ</em>m. So far spectra of 150 sources have been obtained: 3 of these sources are PNe and 1 is a PPNe. This suggests that this sample of 25<em>µ</em>m emitters may be a rich source of new PNe and PPNe. In this note we discuss two of these four sources.</p> | - |
| dc.language | eng | - |
| dc.relation.ispartof | 155th Symposium of the International Astronomical Union: Planetary Nebulae (13/07/1992-17/07/1992, , , Innsbruck, Austria) | - |
| dc.title | Planetary and Proto-Planetary Nebulae which are Strong 25µm Emitters | - |
| dc.type | Conference_Paper | - |
| dc.identifier.doi | 10.1007/978-94-011-2088-3_10 | - |
| dc.identifier.volume | 155 | - |