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| Main Author: | |
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| Format: | Artículo científico |
| Language: | en |
| Published: |
Universidad Nacional Autónoma de México
2018
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| Online Access: | https://www.redalyc.org/articulo.oa?id=57171626004 https://www.redalyc.org/journal/571/57171626004/ https://www.redalyc.org/journal/571/57171626004/html/ https://www.redalyc.org/journal/571/57171626004/57171626004.epub https://www.redalyc.org/journal/571/57171626004/movil |
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| _version_ | 1866559011455762432 |
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| author | L. F. Rodríguez |
| author_facet | L. F. Rodríguez |
| contents | A comparison of the radio and optical time-evolution of HH 1 and 2 L. F. Rodríguez A. C. Raga A. Rodríguez-Kamenetzky C. Carrasco-González Física, Astronomía y Matemáticas Herbig outflows shock waves Haro objects stars: winds We present a comparison between the time-evolution over the past ≈ 20 years of the radio continuum and Hα emission of HH 1 and 2. We find that the radio continuum and the Hα emission of both objects show very similar trends, with HH 1 becoming fainter and HH 2 brightening quite considerably (by about a factor of 2). We also find that the FHα/Fff (Hα to free-free continuum) ratio of HH 1 and 2 has higher values than the ones typically found in planetary nebulae (PNe), which we interpret as an indication that the Hα and free-free emission of HH 1/2 is produced in emitting regions with lower temperatures (≈ 2000 K) than the emission of PNe (with ≈ 104 K). 2018 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57171626004 https://www.redalyc.org/journal/571/57171626004/ https://www.redalyc.org/journal/571/57171626004/html/ https://www.redalyc.org/journal/571/57171626004/57171626004.epub https://www.redalyc.org/journal/571/57171626004/movil 10.14482/INDES.30.1.303.661 en http://www.redalyc.org/revista.oa?id=571 Revista Mexicana de Astronomía y Astrofísica application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Astronomía y Astrofísica (México) Num.1 Vol.54 |
| format | Artículo científico |
| id | redalyc_57171626004 |
| language | en |
| publishDate | 2018 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | A comparison of the radio and optical time-evolution of HH 1 and 2 L. F. Rodríguez Física, Astronomía y Matemáticas Herbig outflows shock waves Haro objects stars: winds A comparison of the radio and optical time-evolution of HH 1 and 2 L. F. Rodríguez A. C. Raga A. Rodríguez-Kamenetzky C. Carrasco-González Física, Astronomía y Matemáticas Herbig outflows shock waves Haro objects stars: winds We present a comparison between the time-evolution over the past ≈ 20 years of the radio continuum and Hα emission of HH 1 and 2. We find that the radio continuum and the Hα emission of both objects show very similar trends, with HH 1 becoming fainter and HH 2 brightening quite considerably (by about a factor of 2). We also find that the FHα/Fff (Hα to free-free continuum) ratio of HH 1 and 2 has higher values than the ones typically found in planetary nebulae (PNe), which we interpret as an indication that the Hα and free-free emission of HH 1/2 is produced in emitting regions with lower temperatures (≈ 2000 K) than the emission of PNe (with ≈ 104 K). 2018 artículo científico 0185-1101 https://www.redalyc.org/articulo.oa?id=57171626004 https://www.redalyc.org/journal/571/57171626004/ https://www.redalyc.org/journal/571/57171626004/html/ https://www.redalyc.org/journal/571/57171626004/57171626004.epub https://www.redalyc.org/journal/571/57171626004/movil 10.14482/INDES.30.1.303.661 en http://www.redalyc.org/revista.oa?id=571 Revista Mexicana de Astronomía y Astrofísica application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Astronomía y Astrofísica (México) Num.1 Vol.54 |
| title | A comparison of the radio and optical time-evolution of HH 1 and 2 |
| topic | Física, Astronomía y Matemáticas Herbig outflows shock waves Haro objects stars: winds |
| url | https://www.redalyc.org/articulo.oa?id=57171626004 https://www.redalyc.org/journal/571/57171626004/ https://www.redalyc.org/journal/571/57171626004/html/ https://www.redalyc.org/journal/571/57171626004/57171626004.epub https://www.redalyc.org/journal/571/57171626004/movil |