2001A&A...370..265M


C.D.S. - SIMBAD4 rel 1.7 - 2020.02.18CET05:28:39

2001A&A...370..265M - Astronomy and Astrophysics, volume 370, 265-272 (2001/4-4)

The supernova remnants G 67.7+1.8, G 31.5-0.6 and G 49.2-0.7.

MAVROMATAKIS F., PAPAMASTORAKIS J., VENTURA J., BECKER W., PALEOLOGOU E.V. and SCHAUDEL D.

Abstract (from CDS):

Optical CCD imaging and spectroscopic observations of three supernova remnants have been performed for the first time. Filamentary and diffuse emission is discovered from the supernova remnant G 67.7+1.8 located ∼82' to the south of CTB 80's pulsar. The Hα and sulfur emission are almost equally strong at a level of ∼20x10–17erg/s/cm2/arcsec2 suggesting shock-heated emission. Electron densities less than 240cm–3 are estimated, while the weak [OIII] emission suggests shock velocities in the range of 60-80km/s. Emission can also be seen in the ROSAT All Sky Survey data which indicate an extended hard X-ray source. Emission from G 31.5-0.6 is detected only in the Hα+[NII] image at a typical flux level of 35x10–17erg/s/cm2/arcsec2. The morphology of the observed radiation is diffuse and partially correlated with the non-thermal radio emission. Deep long-slit spectra detect sulfur line emission which is not strong enough to identify it as emission from shocked gas. Finally, optical emission from G 49.2-0.7 is obscured by several dark nebulae which probably give rise to significant X-ray attenuation. The Hα+[NII] flux is typically ∼40x10–17erg/s/cm2/arcsec2 while the [SII] flux is very weak, not allowing its identification as shock-heated. However, a small area of ∼3'x1' emits strong sulfur flux relative to Hα ([SII]/Hα∼0.6). This area is located in the south-east of G 49.2-0.7, close to the outer boundaries of the X-ray and radio emission. However, deep optical spectra would be required to firmly establish the nature of this emission and its association to G 49.2-0.7.

Abstract Copyright:

Journal keyword(s): ISM: general - ISM: supernova remnants - ISM: individual objects: G 67.7+1.8, G 31.5-0.6, G 49.2-0.7

Simbad objects: 16

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Number of rows : 16

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 * ksi02 Cet * 02 28 09.5570589539 +08 27 36.216809306 4.14 4.25 4.30 4.29 4.34 B9III 305 0
2 SNR G031.5-00.6 Rad 18 51.2 -01 31           ~ 25 1
3 GAL 031.7-01.0 SR? 18 52 33.8 -01 36 58           ~ 3 0
4 SH 2-79 HII 19 23.3 +13 58   13.01 12.16     ~ 9 0
5 SNR G049.1-00.1 SNR 19 23 19.300 +14 09 21.00           ~ 237 0
6 [KC97c] G049.0-00.5 HII 19 23 20.2 +14 01 33           ~ 3 0
7 [OMN2000] Region 3 PoC 19 23 29.3 +14 31 38           ~ 149 0
8 W 51b SFR 19 23 32.8 +14 29 56           ~ 76 0
9 W 51 SNR 19 23 50 +14 06.0           ~ 1130 1
10 SNR G068.8+02.6 SNR 19 52 55 +32 54.2           ~ 328 1
11 TYC 2669-4343-1 * 19 53 52.0784356025 +31 21 36.427683180   10.87 10.78     ~ 1 0
12 GAL 067.58+01.88 ? 19 53 57 +31 21.9           ~ 1 0
13 SNR G067.7+01.8 SNR 19 54.5 +31 29           ~ 32 0
14 * 58 Aql * 19 54 44.7954348711 +00 16 25.053387202   5.703 5.631     B9IV 193 0
15 * eps Aqr * 20 47 40.5526029 -09 29 44.787712 3.79 3.77 3.77 3.70 3.70 B9.5V 252 0
16 * 42 Peg PM* 22 41 27.7207176 +10 49 52.907917 3.10 3.33 3.41 3.43 3.50 B8V 281 0

    Equat.    Gal    SGal    Ecl

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2020.02.18-05:28:39

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