Note: this is an
archived version which has been superseded. The current SNR
catalogue is at
http://www.mrao.cam.ac.uk/surveys/snrs/
G27.4+0.0
4C-04.71
- Right Ascension: 18 38 40
- Declination: -04 59
- Size (arcmin): 4
- Type: S
- Flux density at 1 GHz (Jy): 6
- Spectral Index: 0.68
Notes: Early references refer to G27.3-0.1, a supposed larger remnant.
- Radio: Incomplete shell.
- X-ray: Diffuse emission, with central compact component.
- Point sources: Compact X-ray source.
- Distance: HI absorption indicates 6 to 7.5 kpc.
References:
- Velusamy & Kundu 1974, A&A, 32, 375. NRAO 300-ft at 2.7 GHz (5').
- 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
- Angerhofer et al. 1977, A&A, 55, 11. NRAO 140-ft at 5 GHz (6'.8: S=2.0±0.5).
ADS
- Altenhoff et al. 1979, A&AS, 35, 23. Effelsberg 100-m at 4.9 GHz (2'.6).
ADS
- Clark et al. 1975, AuJPA, 37, 75. Molonglo at 408 MHz (3': S=4.4).
ADS
- Caswell et al. 1982, MNRAS, 200, 1143. FIRST at 1415 MHz (60"×45": S=3.5). Revise S(408)=10.4, and
S(5000)=1.9±0.2.
ADS
- Kriss et al. 1985, ApJ, 288, 703. IPC and HRI observations, plus VLA at 1.4 and 5 GHz (12").
ADS
- Sanbonmatsu & Helfand 1992, AJ, 104, 2189. VLA at 1.4 GHz for HI absorption.
ADS
- Helfand et al. 1994, ApJ, 434, 627. ROSAT observations, particularly of central source.
ADS
Last updated: 27 JUN 1995
Dave Green/MRAO, Cambridge, UK/D.A.Green@mrao.cam.ac.uk