M. Jura et al 2000 ApJ 528 L105 doi:10.1086/312437
What Is Hatching in the Egg?
FREEM. Jura1, J. L. Turner1, S. Van Dyk1,3 and G. R. Knapp2
Show affiliationsWe report VLA detections at 1.3, 2, and 3.6 cm of the Egg Nebula, RAFGL 2688. We resolve the source and find an inner 9'' diameter core that is produced by ~0.01 M
of dust. It seems that the Egg Nebula experienced a major mass ejection, losing ~1 M during the past ≤1200 yr. The centimeter-wavelength emission is extended at a position angle of 53°, while the famous jets and lobes in the Egg Nebula lie along a position angle of 15°. The multiple symmetries in the Egg Nebula may occur because the rotation axis of the mass-losing star is not perpendicular to the orbital plane of the putative close binary. Between 3.6 cm and 350 μm, the dust opacity appears to vary as ν0.6, which can be explained if there are some grains with sizes at least as large as 0.5 cm.
- Subject headings
- Dates
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Issue 2 (2000 January 10)
Received 1999 September 22, accepted for publication 1999 November 16
Published 1999 December 13
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What Is Hatching in the Egg?
M. Jura et al 2000 ApJ 528 L105
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