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    Uncovering the Deeply Embedded Active Galactic Nucleus Activity in the Nuclear Regions of the Interacting Galaxy Arp 299

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    Identificadores
    URI: http://hdl.handle.net/10902/4813
    DOI: 10.1088/2041-8205/779/1/L14
    ISSN: 2041-8205
    ISSN: 2041-8213
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    Author
    Alonso Herrero, Almudena; Roche, Patrick F.; Esquej Alonso, María Pilar; González Martín, Omaira; Pereira Santaella, M.; Ramos Almeida, Cristina; Levenson, Nancy A.; Packham, Christopher; Asensio Ramos, A.; Mason, Rachel E.; Rodríguez Espinosa, José Miguel; Álvarez, C.; Colina, L.; Aretxaga, Itziar; Díaz Santos, Tanio; Perlman, E.; Telesco, C. M.
    Date
    2013-12
    Derechos
    © 2013. The American Astronomical Society, © 2013 IOP Publishing
    Publicado en
    The astrophysical Journal Letters, vol. 779, iss. 1, art. num. L14, (2013)
    Publisher
    American Astronomical Society
    Institute of Physics
    Enlace a la publicación
    http://dx.doi.org/10.1088/2041-8205/779/1/L14
    Palabras clave
    Galaxies: individual (Arp 299, IC 694, NGC 3690)
    Galaxies: nuclei
    Galaxies: Seyfert
    Infrared: galaxies
    Abstract:
    We present mid-infrared (MIR) 8-13 μm spectroscopy of the nuclear regions of the interacting galaxy Arp 299 (IC 694+NGC 3690) obtained with CanariCam (CC) on the 10.4 m Gran Telescopio Canarias (GTC). The high angular resolution (~0.''3-0.''6) of the data allows us to probe nuclear physical scales between 60 and 120 pc, which is a factor of 10 improvement over previous MIR spectroscopic observations of this system. The GTC/CC spectroscopy displays evidence of deeply embedded active galactic nucleus (AGN) activity in both nuclei. The GTC/CC nuclear spectrum of NGC 3690/Arp 299-B1 can be explained as emission from AGN-heated dust in a clumpy torus with both a high covering factor and high extinction along the line of sight. The estimated bolometric luminosity of the AGN in NGC 3690 is 3.2 ± 0.6 × 1044 erg s–1. The nuclear GTC/CC spectrum of IC 694/Arp 299-A shows 11.3 μm polycyclic aromatic hydrocarbon emission stemming from a deeply embedded (AV ~ 24 mag) region of less than 120 pc in size. There is also a continuum-emitting dust component. If associated with the putative AGN in IC 694, we estimate that it would be approximately five times less luminous than the AGN in NGC 3690. The presence of dual AGN activity makes Arp 299 a good example to study such phenomena in the early coalescence phase of interacting galaxies.
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    • D52 Artículos [726]

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    UNIVERSIDAD DE CANTABRIA

    Repositorio realizado por la Biblioteca Universitaria utilizando DSpace software
    Contact Us | Send Feedback
    Metadatos sujetos a:licencia de Creative Commons Reconocimiento 3.0 España