Circumstellar dust shells around very young and massive stars
Abstract In this paper we investigate the properties of dust in circumstellar shells around very young massive compact IR sources (Becklin-Neugebauer objects). We found no correlation between the optical depth in the centre of the 10-μm band and the 3.1-μm ice band. An inverse correlation between th...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Gürtler, J. [verfasserIn] |
|---|
| Format: |
Artikel |
|---|---|
| Sprache: |
Englisch |
| Erschienen: |
1986 |
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| Schlagwörter: |
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| Anmerkung: |
© D. Reidel Publishing Company 1986 |
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| Übergeordnetes Werk: |
Enthalten in: Astrophysics and space science - Kluwer Academic Publishers, 1968, 128(1986), 1 vom: Dez., Seite 163-177 |
|---|---|
| Übergeordnetes Werk: |
volume:128 ; year:1986 ; number:1 ; month:12 ; pages:163-177 |
| Links: |
|---|
| DOI / URN: |
10.1007/BF00656028 |
|---|
| Katalog-ID: |
OLC2066163597 |
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| 520 | |a Abstract In this paper we investigate the properties of dust in circumstellar shells around very young massive compact IR sources (Becklin-Neugebauer objects). We found no correlation between the optical depth in the centre of the 10-μm band and the 3.1-μm ice band. An inverse correlation between the strength of the silicate feature and the colour temperature for the 8–13 μm interval was detected. Our sample of BN objects extends this kind of relation already known for Mira stars and OH/IR stars to higher optical depths. We present a radiative transfer model for BN objects and discuss its main properties. Using this model, the interpretation of the observations led to the conclusion that the type of silicates present in the dust shells of very young stellar objects is different from that type around oxygen-rich giants and supergiants. These different silicates may be tentatively identified with pyroxenes and olivines, respectively. We studied the influence of the adopted dust model in deriving source parameters of BN objects. The object W3-IRS5 was discussed in some detail. | ||
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10.1007/BF00656028 doi (DE-627)OLC2066163597 (DE-He213)BF00656028-p DE-627 ger DE-627 rakwb eng 520 530 620 VZ 16,12 ssgn Gürtler, J. verfasserin aut Circumstellar dust shells around very young and massive stars 1986 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © D. Reidel Publishing Company 1986 Abstract In this paper we investigate the properties of dust in circumstellar shells around very young massive compact IR sources (Becklin-Neugebauer objects). We found no correlation between the optical depth in the centre of the 10-μm band and the 3.1-μm ice band. An inverse correlation between the strength of the silicate feature and the colour temperature for the 8–13 μm interval was detected. Our sample of BN objects extends this kind of relation already known for Mira stars and OH/IR stars to higher optical depths. We present a radiative transfer model for BN objects and discuss its main properties. Using this model, the interpretation of the observations led to the conclusion that the type of silicates present in the dust shells of very young stellar objects is different from that type around oxygen-rich giants and supergiants. These different silicates may be tentatively identified with pyroxenes and olivines, respectively. We studied the influence of the adopted dust model in deriving source parameters of BN objects. The object W3-IRS5 was discussed in some detail. Olivine Optical Depth Massive Star Radiative Transfer Model Stellar Object Henning, Th. aut Enthalten in Astrophysics and space science Kluwer Academic Publishers, 1968 128(1986), 1 vom: Dez., Seite 163-177 (DE-627)129062723 (DE-600)629-4 (DE-576)014393522 0004-640X nnns volume:128 year:1986 number:1 month:12 pages:163-177 https://doi.org/10.1007/BF00656028 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY SSG-OLC-AST SSG-OPC-AST GBV_ILN_11 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_40 GBV_ILN_47 GBV_ILN_70 GBV_ILN_2002 GBV_ILN_2279 GBV_ILN_2286 GBV_ILN_4012 GBV_ILN_4046 GBV_ILN_4082 GBV_ILN_4103 GBV_ILN_4306 GBV_ILN_4700 AR 128 1986 1 12 163-177 |
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10.1007/BF00656028 doi (DE-627)OLC2066163597 (DE-He213)BF00656028-p DE-627 ger DE-627 rakwb eng 520 530 620 VZ 16,12 ssgn Gürtler, J. verfasserin aut Circumstellar dust shells around very young and massive stars 1986 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © D. Reidel Publishing Company 1986 Abstract In this paper we investigate the properties of dust in circumstellar shells around very young massive compact IR sources (Becklin-Neugebauer objects). We found no correlation between the optical depth in the centre of the 10-μm band and the 3.1-μm ice band. An inverse correlation between the strength of the silicate feature and the colour temperature for the 8–13 μm interval was detected. Our sample of BN objects extends this kind of relation already known for Mira stars and OH/IR stars to higher optical depths. We present a radiative transfer model for BN objects and discuss its main properties. Using this model, the interpretation of the observations led to the conclusion that the type of silicates present in the dust shells of very young stellar objects is different from that type around oxygen-rich giants and supergiants. These different silicates may be tentatively identified with pyroxenes and olivines, respectively. We studied the influence of the adopted dust model in deriving source parameters of BN objects. The object W3-IRS5 was discussed in some detail. Olivine Optical Depth Massive Star Radiative Transfer Model Stellar Object Henning, Th. aut Enthalten in Astrophysics and space science Kluwer Academic Publishers, 1968 128(1986), 1 vom: Dez., Seite 163-177 (DE-627)129062723 (DE-600)629-4 (DE-576)014393522 0004-640X nnns volume:128 year:1986 number:1 month:12 pages:163-177 https://doi.org/10.1007/BF00656028 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY SSG-OLC-AST SSG-OPC-AST GBV_ILN_11 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_40 GBV_ILN_47 GBV_ILN_70 GBV_ILN_2002 GBV_ILN_2279 GBV_ILN_2286 GBV_ILN_4012 GBV_ILN_4046 GBV_ILN_4082 GBV_ILN_4103 GBV_ILN_4306 GBV_ILN_4700 AR 128 1986 1 12 163-177 |
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10.1007/BF00656028 doi (DE-627)OLC2066163597 (DE-He213)BF00656028-p DE-627 ger DE-627 rakwb eng 520 530 620 VZ 16,12 ssgn Gürtler, J. verfasserin aut Circumstellar dust shells around very young and massive stars 1986 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © D. Reidel Publishing Company 1986 Abstract In this paper we investigate the properties of dust in circumstellar shells around very young massive compact IR sources (Becklin-Neugebauer objects). We found no correlation between the optical depth in the centre of the 10-μm band and the 3.1-μm ice band. An inverse correlation between the strength of the silicate feature and the colour temperature for the 8–13 μm interval was detected. Our sample of BN objects extends this kind of relation already known for Mira stars and OH/IR stars to higher optical depths. We present a radiative transfer model for BN objects and discuss its main properties. Using this model, the interpretation of the observations led to the conclusion that the type of silicates present in the dust shells of very young stellar objects is different from that type around oxygen-rich giants and supergiants. These different silicates may be tentatively identified with pyroxenes and olivines, respectively. We studied the influence of the adopted dust model in deriving source parameters of BN objects. The object W3-IRS5 was discussed in some detail. Olivine Optical Depth Massive Star Radiative Transfer Model Stellar Object Henning, Th. aut Enthalten in Astrophysics and space science Kluwer Academic Publishers, 1968 128(1986), 1 vom: Dez., Seite 163-177 (DE-627)129062723 (DE-600)629-4 (DE-576)014393522 0004-640X nnns volume:128 year:1986 number:1 month:12 pages:163-177 https://doi.org/10.1007/BF00656028 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY SSG-OLC-AST SSG-OPC-AST GBV_ILN_11 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_40 GBV_ILN_47 GBV_ILN_70 GBV_ILN_2002 GBV_ILN_2279 GBV_ILN_2286 GBV_ILN_4012 GBV_ILN_4046 GBV_ILN_4082 GBV_ILN_4103 GBV_ILN_4306 GBV_ILN_4700 AR 128 1986 1 12 163-177 |
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10.1007/BF00656028 doi (DE-627)OLC2066163597 (DE-He213)BF00656028-p DE-627 ger DE-627 rakwb eng 520 530 620 VZ 16,12 ssgn Gürtler, J. verfasserin aut Circumstellar dust shells around very young and massive stars 1986 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © D. Reidel Publishing Company 1986 Abstract In this paper we investigate the properties of dust in circumstellar shells around very young massive compact IR sources (Becklin-Neugebauer objects). We found no correlation between the optical depth in the centre of the 10-μm band and the 3.1-μm ice band. An inverse correlation between the strength of the silicate feature and the colour temperature for the 8–13 μm interval was detected. Our sample of BN objects extends this kind of relation already known for Mira stars and OH/IR stars to higher optical depths. We present a radiative transfer model for BN objects and discuss its main properties. Using this model, the interpretation of the observations led to the conclusion that the type of silicates present in the dust shells of very young stellar objects is different from that type around oxygen-rich giants and supergiants. These different silicates may be tentatively identified with pyroxenes and olivines, respectively. We studied the influence of the adopted dust model in deriving source parameters of BN objects. The object W3-IRS5 was discussed in some detail. Olivine Optical Depth Massive Star Radiative Transfer Model Stellar Object Henning, Th. aut Enthalten in Astrophysics and space science Kluwer Academic Publishers, 1968 128(1986), 1 vom: Dez., Seite 163-177 (DE-627)129062723 (DE-600)629-4 (DE-576)014393522 0004-640X nnns volume:128 year:1986 number:1 month:12 pages:163-177 https://doi.org/10.1007/BF00656028 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY SSG-OLC-AST SSG-OPC-AST GBV_ILN_11 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_40 GBV_ILN_47 GBV_ILN_70 GBV_ILN_2002 GBV_ILN_2279 GBV_ILN_2286 GBV_ILN_4012 GBV_ILN_4046 GBV_ILN_4082 GBV_ILN_4103 GBV_ILN_4306 GBV_ILN_4700 AR 128 1986 1 12 163-177 |
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10.1007/BF00656028 doi (DE-627)OLC2066163597 (DE-He213)BF00656028-p DE-627 ger DE-627 rakwb eng 520 530 620 VZ 16,12 ssgn Gürtler, J. verfasserin aut Circumstellar dust shells around very young and massive stars 1986 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © D. Reidel Publishing Company 1986 Abstract In this paper we investigate the properties of dust in circumstellar shells around very young massive compact IR sources (Becklin-Neugebauer objects). We found no correlation between the optical depth in the centre of the 10-μm band and the 3.1-μm ice band. An inverse correlation between the strength of the silicate feature and the colour temperature for the 8–13 μm interval was detected. Our sample of BN objects extends this kind of relation already known for Mira stars and OH/IR stars to higher optical depths. We present a radiative transfer model for BN objects and discuss its main properties. Using this model, the interpretation of the observations led to the conclusion that the type of silicates present in the dust shells of very young stellar objects is different from that type around oxygen-rich giants and supergiants. These different silicates may be tentatively identified with pyroxenes and olivines, respectively. We studied the influence of the adopted dust model in deriving source parameters of BN objects. The object W3-IRS5 was discussed in some detail. Olivine Optical Depth Massive Star Radiative Transfer Model Stellar Object Henning, Th. aut Enthalten in Astrophysics and space science Kluwer Academic Publishers, 1968 128(1986), 1 vom: Dez., Seite 163-177 (DE-627)129062723 (DE-600)629-4 (DE-576)014393522 0004-640X nnns volume:128 year:1986 number:1 month:12 pages:163-177 https://doi.org/10.1007/BF00656028 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY SSG-OLC-AST SSG-OPC-AST GBV_ILN_11 GBV_ILN_22 GBV_ILN_24 GBV_ILN_31 GBV_ILN_40 GBV_ILN_47 GBV_ILN_70 GBV_ILN_2002 GBV_ILN_2279 GBV_ILN_2286 GBV_ILN_4012 GBV_ILN_4046 GBV_ILN_4082 GBV_ILN_4103 GBV_ILN_4306 GBV_ILN_4700 AR 128 1986 1 12 163-177 |
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Circumstellar dust shells around very young and massive stars |
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Circumstellar dust shells around very young and massive stars |
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Gürtler, J. |
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Astrophysics and space science |
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1986 |
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163 |
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Gürtler, J. Henning, Th. |
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Gürtler, J. |
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10.1007/BF00656028 |
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520 530 620 |
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circumstellar dust shells around very young and massive stars |
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Circumstellar dust shells around very young and massive stars |
| abstract |
Abstract In this paper we investigate the properties of dust in circumstellar shells around very young massive compact IR sources (Becklin-Neugebauer objects). We found no correlation between the optical depth in the centre of the 10-μm band and the 3.1-μm ice band. An inverse correlation between the strength of the silicate feature and the colour temperature for the 8–13 μm interval was detected. Our sample of BN objects extends this kind of relation already known for Mira stars and OH/IR stars to higher optical depths. We present a radiative transfer model for BN objects and discuss its main properties. Using this model, the interpretation of the observations led to the conclusion that the type of silicates present in the dust shells of very young stellar objects is different from that type around oxygen-rich giants and supergiants. These different silicates may be tentatively identified with pyroxenes and olivines, respectively. We studied the influence of the adopted dust model in deriving source parameters of BN objects. The object W3-IRS5 was discussed in some detail. © D. Reidel Publishing Company 1986 |
| abstractGer |
Abstract In this paper we investigate the properties of dust in circumstellar shells around very young massive compact IR sources (Becklin-Neugebauer objects). We found no correlation between the optical depth in the centre of the 10-μm band and the 3.1-μm ice band. An inverse correlation between the strength of the silicate feature and the colour temperature for the 8–13 μm interval was detected. Our sample of BN objects extends this kind of relation already known for Mira stars and OH/IR stars to higher optical depths. We present a radiative transfer model for BN objects and discuss its main properties. Using this model, the interpretation of the observations led to the conclusion that the type of silicates present in the dust shells of very young stellar objects is different from that type around oxygen-rich giants and supergiants. These different silicates may be tentatively identified with pyroxenes and olivines, respectively. We studied the influence of the adopted dust model in deriving source parameters of BN objects. The object W3-IRS5 was discussed in some detail. © D. Reidel Publishing Company 1986 |
| abstract_unstemmed |
Abstract In this paper we investigate the properties of dust in circumstellar shells around very young massive compact IR sources (Becklin-Neugebauer objects). We found no correlation between the optical depth in the centre of the 10-μm band and the 3.1-μm ice band. An inverse correlation between the strength of the silicate feature and the colour temperature for the 8–13 μm interval was detected. Our sample of BN objects extends this kind of relation already known for Mira stars and OH/IR stars to higher optical depths. We present a radiative transfer model for BN objects and discuss its main properties. Using this model, the interpretation of the observations led to the conclusion that the type of silicates present in the dust shells of very young stellar objects is different from that type around oxygen-rich giants and supergiants. These different silicates may be tentatively identified with pyroxenes and olivines, respectively. We studied the influence of the adopted dust model in deriving source parameters of BN objects. The object W3-IRS5 was discussed in some detail. © D. Reidel Publishing Company 1986 |
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Circumstellar dust shells around very young and massive stars |
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