The Ant Nebula taken by Hubble Space Telescope in 2008
Observation data: J2000 epoch
Right ascension
16h 17m 13.392s[1]
Declination
−51° 59′ 10.31″[1]
Distance
~8,000 ly (~2,500 pc)[2] ly
Apparent magnitude (V)
13.8[3]
Apparent dimensions (V)
>50″ × 12″[2]
Constellation
Norma
Physical characteristics
Radius
1.0 ly[a] ly
Absolute magnitude (V)
1.8[b]
Notable features
Three nested pairs of bipolar lobes
Designations
ESO 225-9,[1] Ant Nebula,[1]
Chamber of Horrors[c]
See also: Lists of nebulae
Mz 3 (Menzel 3) is a young bipolar planetary nebula (PN) in the constellation Norma that is composed of a bright core and four distinct high-velocity outflows that have been named lobes, columns, rays, and chakram. These nebulosities are described as: two spherical bipolar lobes, two outer large filamentary hour-glass shaped columns, two cone shaped rays, and a planar radially expanding, elliptically shaped chakram.[4][5]
Mz 3 is a complex system composed of three nested pairs of bipolar lobes and an equatorial ellipse.[6]
Its lobes all share the same axis of symmetry but each have very different morphologies and opening angles.[6]
It is an unusual PN in that it is believed, by some researchers, to contain a symbiotic binary at its center.[5]
One study suggests that the dense nebular gas at its center may have originated from a source different from that of its extended lobes.[5] The working model to explain this hypothesizes that this PN is composed of a giant companion that caused a central dense gas region to form, and a white dwarf that provides ionizing photons for the PN.[5]
Mz 3 is often referred to as the Ant Nebula because it resembles the head and thorax of a garden-variety ant.
^ abcdSIMBAD 2006
^ abCite error: The named reference Smith2003 was invoked but never defined (see the help page).
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