GNIRS NIR Integral Field Spectroscopy of NGC 5128
; Mast, Damian
; Gaspar, Gaia
; Gunthardt, Guillermo Ivan ; Dottori, Horacio Alberto ; Aguero Paz, Maria ; Camperi, Javier Antonio ; Diaz, Carlos Gonzalo
; Gimeno, German Nicolas
; D'Ambra, Ary Otros responsables
Fecha
07/2020
Editorial
Asociación Argentina de Astronomia
Revista
Boletín de la Asociación Argentina de Astronomía
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Fecha del evento
Institución organizadora
ISSN
0571-3285
eISSN
1669-9521
ISBN
Idioma
Inglés
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Clasificación temática
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Resumen
Presentamos observaciones del núcleo activo de NGC 5128 obtenidas con la unidad de campo integral (IFU) disponible en el espectrógrafo GNIRS hasta 2007. Este es el AGN más cercano y está completamente oculto al rango óptico por una fuerte línea de polvo debido al canto. orientación del disco de la galaxia. Los espectros IFU de banda K (1,9 - 2,55 μm) descubrieron la emisión nuclear y permitieron una nueva determinación de la masa del agujero negro supermasivo, además de mapear el gas molecular con una resolución espacial de ≈ 7 pc. Este trabajo nos permite explorar el potencial científico de las capacidades de campo integral en GNIRS, considerando que Gemini está actualizando el instrumento con la adición de dos IFU que trabajan en el rango espectral de 0,9 a 5,4 μm, que estarán disponibles a finales de 2021. Una de las IFU operará bajo visibilidad natural, lo que permitirá un campo de 3,2'' × 4.
We present observations of the active nucleus of NGC 5128 obtained with the former integral field unit (IFU) of the GNIRS spectrograph. This is the nearest AGN and is completely hidden to the optical range by a strong dust lane due to the edge-on orientation of the galaxy disk. The K-band (1.9 to 2.55 µm) IFU spectra uncovered the nuclear emission and allowed a new determination of the supermassive black hole mass, plus mapping of the molecular gas with a spatial resolution of ∼7 pc. This work allows us to explore the scientific potential of the integral field capabilities in GNIRS, considering that Gemini is upgrading the instrument with the addition of two IFUs working in the spectral range 0.9 to 5.4 µm, which will be available by the end of 2021. One of the IFUs will operate under natural seeing, allowing a field of 3.2”×4.8” sampled each 0.15” with R∼7200. The other unit will complement Gemini North adaptive optics system, sampling each 0.05” a field of 1.25”×1.8”, with a spectral resolution R∼18000, uncommon for this kind of NIR 3D spectroscopy facility.
We present observations of the active nucleus of NGC 5128 obtained with the former integral field unit (IFU) of the GNIRS spectrograph. This is the nearest AGN and is completely hidden to the optical range by a strong dust lane due to the edge-on orientation of the galaxy disk. The K-band (1.9 to 2.55 µm) IFU spectra uncovered the nuclear emission and allowed a new determination of the supermassive black hole mass, plus mapping of the molecular gas with a spatial resolution of ∼7 pc. This work allows us to explore the scientific potential of the integral field capabilities in GNIRS, considering that Gemini is upgrading the instrument with the addition of two IFUs working in the spectral range 0.9 to 5.4 µm, which will be available by the end of 2021. One of the IFUs will operate under natural seeing, allowing a field of 3.2”×4.8” sampled each 0.15” with R∼7200. The other unit will complement Gemini North adaptive optics system, sampling each 0.05” a field of 1.25”×1.8”, with a spectral resolution R∼18000, uncommon for this kind of NIR 3D spectroscopy facility.
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