G18.8+0.3 ADS: search title/keyword/abstract or fulltext

Kes 67 ADS: search title/keyword/abstract or fulltext

• Right Ascension: 18 23 58
• Declination: −12 23
• Size (/arcmin): 17×11
• Type: S
• Flux density at 1 GHz (/Jy): 33
• Spectral Index: 0.46

Notes: Has been called G18.9+0.3.

Radio: Incomplete shell, in complex region near the HII region W39.

Distance: Association with molecular cloud suggests 12 kpc, HI absorption suggests 13.8 kpc.

References:

• Willis 1973, A&A, 26, 237. NRAO 300-ft at 2.7 GHz (5′: S=17±7 Jy). ADS
• Clark et al. 1975, AuJPA, 37, 75. Molonglo at 408 MHz (3′: S=38 Jy). ADS
• Caswell et al. 1975, A&A, 45, 239. Parkes HI absorption. ADS
• Dickel & Milne 1976, AuJPh, 29, 435. Comparison of earlier Parkes 64-m maps at 2.7 GHz (8.′4) and 5 GHz (4.′4). ADS
• Altenhoff et al. 1979, A&AS, 35, 23. Effelsberg 100-m at 4.9 GHz (2.′6). ADS
• Milne et al. 1989, PASA, 8, 187. Parkes 64-m at 8.4 GHz (3.′0: S=12.9±1.0 Jy), including polarisation. ADS
• Kassim 1992, AJ, 103, 943. VLA at 327 MHz (2.′9×3.′5: S=55 Jy). ADS
• Dubner et al. 1996, AJ, 111, 1304. VLA at 1.4 GHz (55″×75″: S=29.9±0.3 Jy). ADS
• Dubner et al. 1999, AJ, 118, 930. Parkes 64-m at 1.6 GHz (15″) for HI, VLA at 1.6 GHz (12″×17″) for OH, plus CO observations. ADS
• Dubner et al. 2004, A&A, 426, 201. CO observations of environment. ADS
• Tian et al. 2007, A&A, 474, 541. VGPS at 1.4 GHz (1′) including HI, plus CO observations of region. ADS
• Sun et al. 2011, A&A, 536, A83. Urumqi 25-m at 5 GHz (9.′5: S=15.3±0.9 Jy) including polarisation and review of flux densities. ADS
• Vasquez et al. 2012, A&A, 545, A89. CO observations of region. ADS
• Paron et al. 2012, A&A, 547, A60. CO and other molecular observations of region. ADS
• Paron et al. 2015, A&A, 580, A51. CO observations in S. ADS
• Ranasinghe & Leahy 2018, AJ, 155, 204. VGPS HI absorption observations. ADS
• Dokara et al. 2021, A&A, 651, A86. VLA at 4 to 8 GHz (18″: S=2.2 Jy) including polarisation, and Spitzer observations. ADS
• Castelletti et al. 2021, A&A, 653, A62.VLA 74-MHz survey flux density, and other low-frequency radio flux densities. ADS
• Sofue et al. 2021, ApJS, 253, 17. Nobeyama 45-m CO observations (20″) of region. ADS

Last updated: 20 Dec 2022

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