What Is Hatching in the Egg?

January 2000 • 2000ApJ...528L.105J

Authors • Jura, M. • Turner, J. L. • Van Dyk, S. • Knapp, G. R.

Abstract • We 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_solar of dust. It seems that the Egg Nebula experienced a major mass ejection, losing ~1 M_solar 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 ν^0.6, which can be explained if there are some grains with sizes at least as large as 0.5 cm.

Links

• SIMBAD http://simbad.u-strasbg.fr/simbo.pl?bibcode=2000ApJ...528L.105J
• PDF https://iopscience.iop.org/article/10.1086/312437/pdf
• ELECTR https://doi.org/10.1086%2F312437