G 65.3+5.7 - SH2-94 + SH2-96 (Stephane ZOLL)

G 65.3+5.7 - SH2-94 + SH2-96

Link: http://www.astrosurf.com/zoll/images/G65_3__5_7.html

G 65.3+5.7 - SH2-94 + SH2-96

Link: http://www.astrosurf.com/zoll/images/G65_3__5_7.html

G 65.3+5.7 ("the little Cygnus Veils"), is a faint SNR localized in Cygnus.

Many diffuse and filamentary structures compose this remnant ; SH2-91, SH2-94 and SH2-96 are some of the brightest parts. The whole structure covers a field of more than 3°, which is very similar to the size of the popular Cygnus Veils. However G65.3+5.7 is much fainter, to a larger distance of about 2500 LYs as compared with 1500 LYs for the Veils, and much older (~ 30000 years vs 7500 years).

G65.3+5.7 shows a significant signal both in Halpha and OIII ; stronger in Halpha especially in the area of SH2-91 & SH2-94, but the OIII signal allows to better estimate the whole structure and limits of the SNR, while the Halpha signal tends to merge with the surrounding galactic nebulosities.

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G 65.3+5.7 "les petites dentelles du Cygne", est un faible rémanent de supernova (RSN) localisé dans la constellation du Cygne, au nord d'Albireo.

G65.3+5.7 est composé de nombreuses structures filamentaires, dont les éléments catalogués SH2-91, SH2-94 et SH2-96. La structure de ce rémanent couvre une surface de plus de 3°, ce qui lui confère une taille proche de celle des Dentelles du Cygne. Sa structure est d'ailleurs très similaire, mais ce RSN est plus ancien (~30000 ans estimé contre 7500 ans pour les Dentelles) et plus éloigné (2500 A.L.).

G 65.3+5.7 émet dans les raies Ha et OIII (signal SII à vérifier), plus intensément en Ha en particulier dans les zones SH2-91 et SH2-94, mais le signal OIII permet mieux de cerner les limites de ce RSN, alors que le signal Ha a tendance à se perdre dans les nébulosités galactiques environnantes.

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G 65.3+5.7 - SH2-94 + SH2-96

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