G21.8−3.0 ADS: search title/keyword/abstract or fulltext

• Right Ascension: 18 41 50
• Declination: −11 16
• Size (/arcmin): 60
• Type: S
• Flux density at 1 GHz (/Jy): 5
• Spectral Index: 0.7

Radio: Shell, polarised in E.

Optical: Filaments in N.

References:

• Gao et al. 2020, MNRAS, 493, 2188. Urumqi 25-m at 5 GHz (9.′5), Effelsberg 100-m at 2.4 to 2.7 GHz (4.′7 to 4.′2) including polarisation, and other observations. ADS

Last updated: 20 Dec 2022

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Dave Green / Cambridge, UK /