Astronomy and Astrophysics – Astrophysics
Scientific paper
2002-03-14
Astronomy and Astrophysics
Astrophysics
7 pages, 5 figures, accepted for publication in A&A
Scientific paper
10.1051/0004-6361:20020398
We performed deep optical observations of the area of the new supernova remnant G 69.4+1.2 in the emission lines of [O III], Halpha+[N II] and [S II]. The low ionization images reveal diffuse and filamentary emission in the central and south, south-west areas of our field. Estimates of the [S II]/Halpha ratio suggest that the detected emission in these areas originates from shock heated gas, while the strong extended source in the north must be an HII region. The medium ionization image of [O III] shows a single filament close to the field center. Emission from [O III] is not detected elsewhere in the field but only in the north from LBN 069.96+01.35. Deep long-slit spectra taken at the position of the [O III] filament suggest shock velocities ~120 km/s, while in other areas velocities around 50 km/s are expected. The sulfur lines ratio indicates electron densities less than 120 cm^{-3}. The absolute Halpha flux is ~5 x 10^{-17} erg s^{-1} cm^{-2} arcsec^{-2}. The optical emission is very well correlated with the radio emission, especially in the south west. The soft X-ray emission detected in the ROSAT All-Sky survey shows a satisfactory degree of correlation with the optical data in the south-west suggesting their association.
Boumis Panayotis
Mavromatakis Fotis
Paleologou Euthimios V.
No associations
LandOfFree
Optical observations of the supernova remnant G 69.4+1.2 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Optical observations of the supernova remnant G 69.4+1.2, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical observations of the supernova remnant G 69.4+1.2 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-9928