Further observations of the planetary nebula in the globular cluster M22

Journal Article · Fri Jun 01 00:00:00 EDT 1990 · Astronomical Journal; (USA)

DOI:https://doi.org/10.1086/115463· OSTI ID:6934342

Cudworth, K M ^[1]

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1. Yerkes Observatory, Williams Bay, WI (USA)

The proper motion of the central star of the newly-discovered planetary nebula in the globular cluster M22 strongly confirms cluster membership, in agreement with radial-velocity data from the discovery group. An accurate optical position of the central star differs by a few arcseconds from the IR source position derived by the discoverers. Photographic photometry of the star on plates spanning nearly a century shows that the star has probably brightened by about 0.2 mag since 1900, but there is no evidence of variations on shorter timescales. Dust within the nebula is probably responsible for the excess reddening of the background red companion to the central star. 12 refs.

• OSTI ID: 6934342
• Journal Information: Astronomical Journal; (USA), Vol. 99; ISSN 0004-6256
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
PLANETARY NEBULAE
STAR CLUSTERS
STARS
SPECTROPHOTOMETRY
BINARY STARS
CHARGE-COUPLED DEVICES
COLOR
COORDINATES
COSMIC DUST
INTERSTELLAR SPACE
PROPER MOTION
VARIATIONS
DUSTS
MOTION
NEBULAE
OPTICAL PROPERTIES
ORGANOLEPTIC PROPERTIES
PHYSICAL PROPERTIES
SEMICONDUCTOR DEVICES
SPACE
640102* - Astrophysics & Cosmology- Stars & Quasi-Stellar
Radio & X-Ray Sources