G8.9+0.4 ADS: search title/keyword/abstract or fulltext

• Right Ascension: 18 03 58
• Declination: −21 03
• Size (/arcmin): 24
• Type: S
• Flux density at 1 GHz (/Jy): 9
• Spectral Index: 0.6

Notes: Has been called G8.90+0.40.

Radio: Shell.

Distance: Optical extinction suggests 3.5 kpc.

References:

• Brogan et al. 2006, ApJ, 639, L25. VLA at 330 MHz (42″: S=18.2±0.5 Jy), plus other observations. ADS
• Hewitt & Yusef-Zadeh 2009, ApJ, 694, L16. OH maser search. ADS
• Wang et al. 2020, A&A, 639, A72. Optical extinction for distance. ADS
• Dokara et al. 2021, A&A, 651, A86. VLA at 4 to 8 GHz (18″: S=0.1 Jy) including polarisation, and Spitzer observations. ADS

Last updated: 20 Dec 2022

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