Physical Properties of the Optical Filaments in NGC 1275

Details Physical Properties of the Optical Filaments in NGC 1275 Physical Properties of the Optical Filaments in NGC 1275

May 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...194.4724s&link_type=abstract

American Astronomical Society, 194th AAS Meeting, #47.24; Bulletin of the American Astronomical Society, Vol. 31, p.892

Astronomy and Astrophysics

Astronomy

Scientific paper

This paper will present results from a study of the cooling flow filaments around NGC 1275, the central galaxy in the Perseus cluster. Emission-line measurements were used to investigate the ionization state and heating mechanism of the nebular gas. The emission-line properties were measured from an extensive spectroscopic data set acquired at the Lick Observatory 3-meter telescope. Line ratio diagrams reveal that the filaments are described by extremely low ionization. The data were also used to probe the excitation properties and the kinematics as a function of radius at several position angles. Implications for the underlying energy source for the filaments will be discussed.

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