A remarkable double-ring galaxy in the cluster Abell 2199

Journal Article · Sat Dec 01 00:00:00 EST 1990 · Astronomical Journal; (USA)

DOI:https://doi.org/10.1086/115633· OSTI ID:6159469

Pence, W D; Oegerle, W; Borne, K D ^[1]

---

1. Space Telescope Science Institute, Baltimore, MD (USA)

B and R CCD images have been obtained of the morphologically peculiar galaxy A1627 + 39, which lies near the center of the rich cluster of galaxies A2199. The galaxy is determined to be a nearly face-on barred S0 galaxy containing two nonconcentric rings. The rings are quite unusual in that they are displaced in opposite directions from the galactic center. There is no color difference across the rings, indicating no recent burst of star formation. Two hypotheses for the origin of the rings have been investigated: (1) a resonance effect with the central bar, and (2) the result of an off-axis, deeply penetrating collision with another cluster member. Models of such a collision are presented, which can reproduce the observed rings. However, neither hypothesis can provide a completely satisfactory explanation of all the observations reported here. 32 refs.

• OSTI ID: 6159469
• Journal Information: Astronomical Journal; (USA), Vol. 100; ISSN 0004-6256
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
GALAXIES
GRAVITATIONAL INTERACTIONS
MORPHOLOGY
CHARGE-COUPLED DEVICES
COLOR
GALAXY CLUSTERS
GALAXY NUCLEI
IMAGE PROCESSING
MATHEMATICAL MODELS
ORIGIN
PHOTOGRAPHY
RINGS
BASIC INTERACTIONS
INTERACTIONS
OPTICAL PROPERTIES
ORGANOLEPTIC PROPERTIES
PHYSICAL PROPERTIES
PROCESSING
SEMICONDUCTOR DEVICES
640105* - Astrophysics & Cosmology- Galaxies