Navegar

Colección

Datos Estadísticas

Artículo

Laurent, O.; Mirabel, I.F.; Charmandaris, V.; Gallais, P.; Sauvage, M.; Vigroux, L.; Cesarsky, C. "A new mid-infrared diagnostic between agn and starbursts" (2001) Astrophysics and Space Science. 276(2-4):569-576
El editor solo permite decargar el artículo en su versión post-print desde el repositorio. Por favor, si usted posee dicha versión, enviela a
Consulte el artículo en la página del editor
Consulte la política de Acceso Abierto del editor

Abstract:

We present a new set of diagnostics which allow us to trace and classify in a statistical manner the mid-IR emission produced by active galactic nuclei (AGN) and star-forming regions. We construct a diagram based on the strength of the unidentified infrared band (UIB) at 6.2 μm, and the intensity of the continuum at short (6 μm) and long wavelengths (15 μm). We interpret the integrated mid-IR emission in late-type galaxies as resulting from three individual contributions coming from HII regions, diffuse/photodissociation regions (PDRs), and AGN. Based on this assumption, our diagnostic diagram provides a quantitative estimate of the AGN and starburst contribution to an observed mid-IR spectrum. We show that UIB emission is very faint or absent in regions harbouring intense and hard radiation fields as in the case of AGN or 'pure' HII starburst regions where UIB carriers can be destroyed by photodissociation. However, contrary to starburst spectra, typical AGN spectra present a strong hot continuum below 9 μm originating from hot dust heated by the AGN radiation field. An extrapolation of this diagnostic towards other mid-IR observations should improve our knowledge of the AGN/starburst connection.

Registro:

Documento: Artículo
Título:A new mid-infrared diagnostic between agn and starbursts
Autor:Laurent, O.; Mirabel, I.F.; Charmandaris, V.; Gallais, P.; Sauvage, M.; Vigroux, L.; Cesarsky, C.
Filiación:Inst. de Astronomía cc 67, suc 28, 1428 Buenos Aires, Argentina
Inst. de Astronomía cc 67, suc 28, 1428 Buenos Aires, Argentina
Año:2001
Volumen:276
Número:2-4
Página de inicio:569
Página de fin:576
DOI: http://dx.doi.org/10.1023/A:1017553429423
Título revista:Astrophysics and Space Science
Título revista abreviado:Astrophys. Space Sci.
ISSN:0004640X
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0004640X_v276_n2-4_p569_Laurent

Referencias:

  • Boselli, A., (1997) Astron. Astrophys., 324, p. L13
  • Boselli, A., (1998) Astron. Astmphys., 335, p. 53
  • Cesarsky, D., (1996) Astron. Astrophys., 315, p. L305
  • Desert, F.-X., Boulanger, F., Puget, J.L., (1990) Astron. Astrophys., 237, p. 215
  • Genzel, R., (1998) Astrophys. J., 498, p. 579
  • Genzel, R., Lutz, D., Tacconi, L., (1998) Nature, 395, p. 29
  • Laurent, O., (1999) Astron. Astrophys., , in preparation
  • Léger, A., Puget, J.L., (1984) Astron. Astrophys., 137, p. L5
  • Léger, A., (1989) Astron. Astrophys., 213, p. 351
  • Lutz, D., (1998) Astron. Astrophys., 505, p. L103
  • Madden, S.C., Vigroux, L., Sauvage, M., (1997) Extragalactic Astronomy in the Infrared, p. 229. , G.A. Mamon, T.X. Thuan and J. Tran (eds.), XVIIth Moriond Astrophysics Meeting
  • Mattila, K., (1996) Astron. Astrophys., 315, p. L353
  • Mattila, K., Lehtinen, K., Lemke, D., (1999) Astron. Astrophys., 342, p. 643
  • Mirabel, I.F., (1998) Astron. Astrophys., 333, p. L1
  • Mirabel, I.F., (1999) Astron. Astrophys., 341, p. 667
  • Moorwood, A.F.M., (1996) Astron. Astrophys., 315, p. L125
  • Pier, E.A., Krolik, J.H., (1992) Astrophys. J., 401, p. 99
  • Puget, J.L., Léger, A., (1989) Annu. Rev. Astron. Astrophys., 27, p. 161
  • Roche, P.F., Aitken, D.K., Smith, C., Ward, M., (1991) Mon. Not. R. Astron. Soc., 248, p. 606
  • Verstraete, L., (1996) Astron. Astrophys., 315, p. L337

Citas:

---------- APA ----------
Laurent, O., Mirabel, I.F., Charmandaris, V., Gallais, P., Sauvage, M., Vigroux, L. & Cesarsky, C. (2001) . A new mid-infrared diagnostic between agn and starbursts. Astrophysics and Space Science, 276(2-4), 569-576.
http://dx.doi.org/10.1023/A:1017553429423
---------- CHICAGO ----------
Laurent, O., Mirabel, I.F., Charmandaris, V., Gallais, P., Sauvage, M., Vigroux, L., et al. "A new mid-infrared diagnostic between agn and starbursts" . Astrophysics and Space Science 276, no. 2-4 (2001) : 569-576.
http://dx.doi.org/10.1023/A:1017553429423
---------- MLA ----------
Laurent, O., Mirabel, I.F., Charmandaris, V., Gallais, P., Sauvage, M., Vigroux, L., et al. "A new mid-infrared diagnostic between agn and starbursts" . Astrophysics and Space Science, vol. 276, no. 2-4, 2001, pp. 569-576.
http://dx.doi.org/10.1023/A:1017553429423
---------- VANCOUVER ----------
Laurent, O., Mirabel, I.F., Charmandaris, V., Gallais, P., Sauvage, M., Vigroux, L., et al. A new mid-infrared diagnostic between agn and starbursts. Astrophys. Space Sci. 2001;276(2-4):569-576.
http://dx.doi.org/10.1023/A:1017553429423