Sh 2-71
Planetary nebula
From Wikipedia, the free encyclopedia
Sh 2-71 is a planetary nebula in the constellation of Aquila. It is notable for its highly irregular and complex morphology, which has been attributed to interactions within a binary star system, however it is believed the shape and structure of the nebula is formed partially because of a triple star system that has since ejected its third member.[1][2][3] The nebula exhibits a broad, asymmetrical ring structure with bipolar lobes and extended emission regions, challenging traditional models of planetary nebula formation driven by single or binary stars. Sh 2-71 is a benchmark object for studying the influence of multiple-star dynamics on the late stages of stellar evolution.[4]
| Nebula | |
|---|---|
Image of Sh 2-71 Nebula, as seen by the Gemini Observatory | |
| Observation data: epoch | |
| Right ascension | 19h 01m 00s |
| Declination | +02° 09' 23" |
| Distance | 1050 pc |
| Constellation | Aquila |
| Physical characteristics | |
| Absolute magnitude (V) | 12.3 |
| Dimensions | 2.5' x 1.3' |
| Designations | LBN 103, PN G035.9-01.1 , Sh 2-71, Min 1-90, V-V 1-9 |
Discovery
It was discovered by Rudolph Minkowski in 1946. It was cataloged by Stewart Sharpless in 1959, who thought it was a possible planetary nebula. In 1961, it was confirmed as a planetary nebula by Boris Vorontsov-Velyaminov.[5][6][7]
Morphology
A 2022 morpho-kinematic study using the SHAPE software modeled its 3D structure from Gemini GMOS images, the HASH Planetary Nebula Database, DSS plates, and high-resolution long-slit spectra from the San Pedro Mártir Kinematic Catalogue.[8]