Near infrared imaging spectroscopy of NGC1275

Details Near infrared imaging spectroscopy of NGC1275 Near infrared imaging spectroscopy of NGC1275

2000-01-05

arxiv.org/abs/astro-ph/0001052v1

Astronomy and Astrophysics

Astrophysics

16 pages, LaTex, 15 gif figures, aa.cls required, accepted for A&A, high resolution images at http://astro1.ws.ba.dlr.de

Scientific paper

We present H and K band imaging spectroscopy of the core regions of the cD/AGN galaxy NGC1275. The spectra, including lines from H2, H, 12CO bandheads, [FeII], and [FeIII], are exploited to constrain the star formation and excitation mechanisms in the galaxy's nucleus. The near-infrared properties can largely be accounted for by ionized gas in the NLR, dense molecular gas, and hot dust concentrated near the active nucleus of NGC1275. The strong and compact H2 emission is mostly from circumnuclear gas excited by the AGN and not from the cooling flow. The extended emission of latetype stars is diluted in the center by the thermal emission of hot dust.

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