A 2 kiloparsec accretion disk (?) inside a 17 kiloparsec H-alpha bar in the cooling flow cluster 2A 0335+096

Details A 2 kiloparsec accretion disk (?) inside a 17 kiloparsec H-alpha bar in the cooling flow cluster 2A 0335+096 A 2 kiloparsec accretion disk (?) inside a 17 kiloparsec H-alpha bar in the cooling flow cluster 2A 0335+096

Jan 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...324l..17r&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 324, Jan. 1, 1988, p. L17-L20.

Astronomy and Astrophysics

Astrophysics

41

Accretion Disks, Galactic Evolution, H Alpha Line, Intergalactic Media, Galactic Clusters, Hydrogen Ions, Star Formation Rate, X Ray Sources

Scientific paper

Observations of the central region of the galaxy cluster associated with 2A 0335+096, obtained in H-alpha, R, I, and b45 (4506 A with FWHM 355 A) using an 800 x 800-pixel CCD detector on the 4-m telescope at KPNO on December 27 and 30, 1986, are reported. The data are presented graphically and analyzed. Features discussed include a 17-kpc-long bar of H-alpha emission surrounded by filaments, a smaller elongated H-alpha structure (possibly an accretion disk) centered on the nucleus of the central galaxy, a secondary galaxy with a red H-alpha-bright nucleus located within the 17-kpc bar about 6 arcsec from the central-galaxy nucleus, and evidence for excess blue emission (indicating star formation at about 8 solar mass/yr in the cooling flow). From the presence of dust in the emission-line gas it is inferred that theoretical models based on preferential formation of low-mass stars may not be applicable to this object.

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