7 papers · 1 filter
High-excitation OH and H_2O lines in Markarian 231: the molecular signatures of compact far-infrared continuum sources
Eduardo González-Alfonso, Howard A. Smith, Matthew L. N. Ashby +3
The ISO/LWS far-infrared spectrum of the ultraluminous galaxy Mkn 231 shows OH and H_2O lines in absorption from energy levels up to 300 K above the ground state, and emission in t…
Spitzer-IRS high resolution spectroscopy of the 12μm Seyfert galaxies: I. First results
Silvia Tommasin, Luigi Spinoglio, Matthew A. Malkan +3
The first high resolution Spitzer IRS 9-37um spectra of 29 Seyfert galaxies (about one quarter) of the 12um Active Galaxy Sample are presented and discussed. The high resolution sp…
Detection of Acetylene toward Cepheus A East with Spitzer
P. Sonnentrucker, E. González-Alfonso, D. A. Neufeld
The first map of interstellar acetylene (C2H2) has been obtained with the infrared spectrograph onboard the Spitzer Space Telescope. A spectral line map of the vibration-rota…
Water vapor emission from IRC+10216 and other carbon-rich stars: model predictions and prospects for multitransition observations
Eduardo González-Alfonso, David A. Neufeld, Gary J. Melnick
We have modeled the emission of H2O rotational lines from the extreme C-rich star IRC+10216. Our treatment of the excitation of H2O emissions takes into account the excitation of H…
Gas-phase CO2 emission toward Cepheus A East: the result of shock activity?
P. Sonnentrucker, E. González-Alfonso, D. A. Neufeld +5
We report the first detection of gas-phase CO2 emission in the star-forming region Cepheus A East, obtained by spectral line mapping of the v2 bending mode at 14.98 micron with the…
The far-infrared emission line and continuum spectrum of the Seyfert galaxy NGC 1068
Luigi Spinoglio, Matthew A. Malkan, Howard A. Smith +2
The first complete far-infrared spectrum (43-197um) of the Seyfert 2 galaxy NGC 1068 as observed with the LWS onboard ISO is reported. In addition to the expected ionic fine struct…