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http://inaoe.repositorioinstitucional.mx/jspui/handle/1009/1283| The role of the synchrotron component in the mid-infrared spectrum of M 87 | |
| JOSE RAMON VALDES PARRA MIGUEL Y ROSA MARIA CHAVEZ DAGOSTINO | |
| Acceso Abierto | |
| Atribución-NoComercial-SinDerivadas | |
| Galaxies: active Galaxies: elliptical and lenticular, cD Galaxies: individual (M 87) Galaxies: jets Infrared: galaxies | |
| We study in detail the mid-infrared (MIR) Spitzer-IRS spectrum of M 87 in the range 5–20 μm. Thanks to the high sensitivity of our Spitzer-IRS spectra we can disentangle the stellar and nuclear components of this active galaxy. To this end, we have properly subtracted from the M 87 spectrum the contribution of the underlying stellar continuum derived from passive Virgo galaxies in our sample. The residual is a clear power law, without any additional termal component, with a zero-point consistent with that obtained by high spatial resolution, ground-based observations. The residual is independent of the adopted passive template. This indicates that the 10 μm silicate emission shown in the spectra of M 87 can be entirely accounted for by the underlying old stellar population, leaving little room for a possible torus contribution. The MIR power law has a slope α ∼0.77–0.82 (Sᵥ ∝ ν exp−α), consistent with optically thin synchrotron emission. | |
| The Astrophysical Journal | |
| 2009 | |
| Artículo | |
| Inglés | |
| Estudiantes Investigadores Público en general | |
| Buson, L., et al., (2009). The role of the synchrotron component in the mid-infrared spectrum of M 87, The Astrophysical Journal. Vol.705(1):356–360 | |
| ASTRONOMÍA Y ASTROFÍSICA | |
| Versión aceptada | |
| acceptedVersion - Versión aceptada | |
| Aparece en las colecciones: | Artículos de Astrofísica |
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| 8. The Role of the Synchrotron Component.pdf | 371.67 kB | Adobe PDF | Visualizar/Abrir |