Note: this is an archived version which has been superseded. The current SNR catalogue is at https://www.mrao.cam.ac.uk/surveys/snrs/

G8.7−0.1 ADS: search fulltext or title/keyword/abstract

(W30)

• Right Ascension: 18 05 30
• Declination: −21 26
• Size (/arcmin): 45
• Type: S?
• Flux density at 1 GHz (/Jy): 80
• Spectral Index: 0.5

Notes: Has been called G8.6−0.1.

Radio: Clumpy non-thermal shell, with low-frequency turnover.

X-ray: Northern edge detected.

Point sources: Pulsar inside W edge.

Distance: Optical extinction suggests 4.2 kpc.

References:

• Odegard 1986, AJ, 92, 1372. TPT at 57.5 MHz (7.'2×9.'7: S=190±50 Jy). ADS
• Kassim & Weiler 1990, Nature, 343, 146. VLA at 327 MHz (3.'0×3.'7). ADS
• Kassim & Weiler 1990, ApJ, 360, 184. VLA at 327 MHz (2.'8×4.'1: S=129±11 Jy), and part at 1.4 GHz (0.'9×1.'8), plus review of flux densities. ADS
• Frail et al. 1994, AJ, 107, 1120. VLA at 327 MHz (37''×55''). ADS
• Finley & Ögelman 1994, ApJ, 434, L25. ROSAT observations, including pulsar. ADS
• Aharonian et al. 2005, Science, 307, 1938. H.E.S.S. detection. ADS
• Aharonian et al. 2006, ApJ, 636, 777. H.E.S.S. observations. ADS
• Landi et al. 2006, ApJ, 651, 190. X-ray observations. ADS
• Briskin et al. 2006, ApJ, 652, 554. Pulsar proper motion. ADS
• Hewitt & Yusef-Zadeh 2009, ApJ, 694, L16. OH maser detection. ADS
• Castro & Slane 2010, ApJ, 717, 372. Fermi observations. ADS
• Ajello et al. 2012, ApJ, 744, 80. Fermi observations. ADS
• Pihlström et al. 2014, AJ, 147, 73. VLA search for methanol masers. ADS
• Acero et al. 2016, ApJS, 224, 8. Fermi observations. ADS
• Lee et al. 2019, AJ, 157, 123. [FeII] IR observations. 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'') including polarisation, and Spitzer observations. ADS

Last updated: 20 Dec 2022

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