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

Journal Article · Fri Jan 01 04:00:00 EST 1988 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/185081· OSTI ID:5438368

Romanishin, W; Hintzen, P

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. 17 references.

• Research Organization: Arizona State Univ., Tempe (USA); NASA, Goddard Space Flight Center, Greenbelt, MD (USA)
• OSTI ID: 5438368
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 324; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ACCRETION DISKS
BALMER LINES
CHARGED PARTICLES
COSMIC DUST
COSMIC RAY SOURCES
COSMIC X-RAY SOURCES
DUSTS
GALACTIC EVOLUTION
GALAXY CLUSTERS
GALAXY NUCLEI
HYDROGEN IONS
INTERGALACTIC SPACE
IONS
SPACE
STAR EVOLUTION