{"id":6738,"date":"2017-12-11T20:19:32","date_gmt":"2017-12-11T19:19:32","guid":{"rendered":"http:\/\/outters.fr\/?p=6738"},"modified":"2025-07-15T17:04:09","modified_gmt":"2025-07-15T16:04:09","slug":"ngc507-ngc496","status":"publish","type":"post","link":"https:\/\/www.outters.fr\/?p=6738","title":{"rendered":"ngc507-ngc496"},"content":{"rendered":"

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ngc507_group ngc496<\/strong>
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\"ngc507-group<\/a><\/span><\/div><\/div><\/div>
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Image LRGB<\/h2><\/a><\/div><\/div><\/div>
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Image annotate<\/h2><\/a><\/div>
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Version Annotate<\/div><\/div><\/div>
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Commentaires sur l’objet photographi\u00e9<\/span><\/p><\/h1><\/span>

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\"outters-nicolas\"<\/p>\n

NGC 507<\/b> est une galaxie lenticulaire<\/a>. Elle est situ\u00e9e dans la constellation des Poissons<\/a>. Elle a \u00e9t\u00e9 d\u00e9couverte par l’astronome germano-britannique William Herschel<\/a> en 1784<\/a>. La galaxie NGC 507 figure dans l’atlas Arp<\/a> sous la cote Arp 229 et elle est pr\u00e9sent\u00e9e comme un exemple de galaxie avec des anneaux concentriques5<\/a><\/sup>.
\nDes mesures non bas\u00e9es sur le d\u00e9calage vers le rouge<\/a> (redshift<\/i>) donnent une distance de 59,582 \u00b1 14,337 Mpc<\/a><\/abbr><\/span> (\u223c194 millions\u00a0d’a.l.<\/a><\/abbr><\/span>) 7<\/a><\/sup> , ce qui est \u00e0 l’int\u00e9rieur des distances calcul\u00e9es en employant la valeur du d\u00e9calage 2<\/a><\/sup>.<\/p>\n

NGC 523<\/b> est une galaxie spirale<\/a>. Elle est situ\u00e9e dans la constellation d’Androm\u00e8de<\/a>. Elle a \u00e9t\u00e9 d\u00e9couverte par l’astronome germano-britannique William Herschel<\/a> en 1784<\/a> et plus tard ajout\u00e9e au catalogue NGC<\/a> sous la cote NGC 537. NGC 523 est la m\u00eame galaxie que NGC 537 et elle a \u00e9t\u00e9 red\u00e9couverte le 23 aout 1862<\/a> par l’astronome prussien<\/a> Heinrich d’Arrest<\/a>5<\/a><\/sup>.
\nCette galaxie figure \u00e0 l’atlas Arp<\/a> sous la cote Arp 158 comme un exemple de galaxie perturb\u00e9e par l’absorption int\u00e9rieure de mati\u00e8re5<\/a><\/sup>.
\nDes mesures non bas\u00e9es sur le d\u00e9calage vers le rouge<\/a> (redshift<\/i>) donnent une distance de 63,014 \u00b1 8,330 Mpc<\/a><\/abbr><\/span> (\u223c206 millions\u00a0d’a.l.<\/a><\/abbr><\/span>) 7<\/a><\/sup> , ce qui est \u00e0 l’int\u00e9rieur des distances calcul\u00e9es en employant la valeur du d\u00e9calage 2<\/a><\/sup><\/p>\n

Pour mieux comprendre le champs je vous sugg\u00e8re d’aller jeter un coup d’oeil \u00e0 la version annot\u00e9e car elle d\u00e9taille en partie le nom des galaxies du champs.<\/p>\n

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Version annot\u00e9e<\/p><\/div>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
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Donn\u00e9es techniques
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Donn\u00e9es techniques de prise de vue<\/h2><\/div>
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Object : ngc507-ngc496-arp158,….
\nCommon name :
\nDate : du 25 sept au 26 octobre 2017
\nOptics : Newton SV400 F3,8
\nMount : Paramount ME Num\u00e9ro 1
\nLocation : Orange observatory
\nSeeing FWHM :2.15 \u00e0 3.5<\/p>\n

Ccd : Moravian G4
\nfilter wheel : Moravian
\nfilters : Astrodon
\nLRVB
\nFocuser :Atlas
\nGuiding : Atik 314L+
\nTemp. out : T\u00b0 de 11 \u00e0 +15\u00b0
\nTemp ccd : -25\u00b0
\nTotal exposure\u00a0 13.5 h
\ntout en binning 1×1
\nLuminance 60 x 10 mn
\nRGB : 14R 14V 14B x 5 mn<\/div><\/div><\/div>

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Donn\u00e9es scientifiques<\/h2><\/div>
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\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
NGC 523<\/td>\n<\/tr>\n
Donn\u00e9es d\u2019observation
\n(\u00c9poque<\/a> J2000.0<\/a>)<\/small><\/th>\n<\/tr>\n
Constellation<\/a><\/th>\nAndrom\u00e8de<\/a><\/td>\n<\/tr>\n
Ascension droite<\/a> (\u03b1)<\/th>\n01h<\/sup>\u00a025m<\/sup>\u00a020,7s<\/sup>1<\/a><\/sup><\/td>\n<\/tr>\n
D\u00e9clinaison<\/a> (\u03b4)<\/th>\n34\u00b0\u00a001\u2032\u00a030\u2033<\/td>\n<\/tr>\n
Distance<\/th>\n65,2 \u00b1 4,5 Mpc<\/a><\/abbr><\/span> (\u223c213 millions\u00a0d’a.l.<\/a><\/abbr><\/span>) 2<\/a><\/sup><\/td>\n<\/tr>\n
Magnitude apparente<\/a> (V)<\/small><\/th>\n12,7 3<\/a><\/sup>
\n13,5 dans la Bande B<\/a> 3<\/a><\/sup><\/td>\n<\/tr>\n
Brillance de surface<\/a><\/th>\n13,2\u00a0mag<\/a>\/as<\/a>2<\/sup>3<\/a><\/sup><\/td>\n<\/tr>\n
Dimensions apparentes (V)<\/small><\/th>\n2,5\u2032<\/a> \u00d7 0,7\u2032<\/a> 3<\/a><\/sup><\/td>\n<\/tr>\n
Redshift<\/a><\/th>\n+0,015871 \u00b1 0,000013 1<\/a><\/sup><\/td>\n<\/tr>\n
Angle de position<\/th>\n108\u00b0 3<\/a><\/sup><\/td>\n<\/tr>\n
Vitesse radiale<\/a><\/th>\n4\u00a0758 \u00b1 4\u00a0km<\/a>\/s<\/a>4<\/a><\/sup><\/td>\n<\/tr>\n
Caract\u00e9ristiques physiques<\/th>\n<\/tr>\n
Type d’objet<\/th>\nGalaxie spirale<\/a><\/td>\n<\/tr>\n
Type de galaxie<\/a><\/th>\nSbc? pec 5<\/a><\/sup><\/td>\n<\/tr>\n
Dimensions<\/th>\n155 000 a.l. 6<\/a><\/sup><\/td>\n<\/tr>\n
D\u00e9couverte<\/th>\n<\/tr>\n
D\u00e9couvreur(s)<\/th>\nWilliam Herschel<\/a> 5<\/a><\/sup><\/td>\n<\/tr>\n
Date<\/th>\n25 septembre 1784 5<\/a><\/sup><\/td>\n<\/tr>\n
D\u00e9signation(s)<\/th>\nNGC<\/a> 537
\nPGC<\/a> 5268
\nMCG<\/a> 6-4-18
\nUGC<\/a> 979
\nZWG 521.22
\nIRAS01225+3345
\nVV 783
\nArp<\/a> 158 3<\/a><\/sup><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div><\/div><\/div>
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