{"id":5080,"date":"2012-10-23T10:12:42","date_gmt":"2012-10-23T09:12:42","guid":{"rendered":"http:\/\/outters.fr\/?p=5080"},"modified":"2025-07-15T17:04:15","modified_gmt":"2025-07-15T16:04:15","slug":"m106-et-ses-voisines","status":"publish","type":"post","link":"https:\/\/www.outters.fr\/?p=5080","title":{"rendered":"m106 et ses voisines"},"content":{"rendered":"

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m106 et ses voisines<\/strong>
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\"m106<\/a><\/span><\/div><\/div><\/div>
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Commentaires sur l’objet photographi\u00e9<\/span><\/p><\/h1><\/span>

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\"outters-nicolas\"Voici M106 et quelques NGC sympa notamment NGC4217 que j’adore…
\nLa TEC140 s’entend parfaitement bien avec la Proline 16803, \u00e0 vous de juger \"\"<\/p>\n<\/div>

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Image lrgb<\/h2><\/a><\/div><\/div><\/div>
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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 : M106 and Co
\nCommon name :
\nDate : du 15 au 17 mars 2010
\nTime : 21 h
\nOptics :TEC140 F7
\nMount : Paramount ME Num\u00e9ro 2
\nLocation : Orange Observatory
\nSeeing : FWHM de 2,8 \u00e0 3 arc sec\/pixel (ccdinspector)
\nCcd : FLI Proline 16803
\nFilter wheel : FLI
\nfilters : Astrodon RGB true color
\nFocuser :Robofocus et focusmax
\nTemp. out : 5 \u00b0
\nTemp ccd : -35\u00b0<\/p>\n

Total exposure :7 h 25
\nLuminance : 27 x 10 mn bining 1×1
\nrouge 12 x 5 mn bining 1×1
\nvert : 12 x 5 mn bining 1×1
\nBleu 12 x 5 mn bining 1×1<\/div><\/div><\/div>

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Donn\u00e9es scientifiques<\/h2><\/div>
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M106<\/b> (ou NGC<\/a> 4258<\/b>) est une galaxie spirale<\/a> situ\u00e9e dans la constellation<\/a> des Chiens de chasse<\/a>. Elle a \u00e9t\u00e9 d\u00e9couverte par Pierre M\u00e9chain<\/a> en 1781<\/a>. Celui-ci n’eut pas l’occasion de l’inclure lui-m\u00eame dans le catalogue Messier<\/a>, bien qu’il en ait probablement eu l’intention, et c’est Helen Sawyer Hogg<\/a> qui l’introduisit dans la version moderne du catalogue en 1947<\/a>, en m\u00eame temps que M105<\/a> et M107<\/a>.<\/p>\n

M106 est situ\u00e9e \u00e0 une distance de 21 \u00e0 25 millions d’ann\u00e9es-lumi\u00e8re<\/a> du syst\u00e8me solaire<\/a>, et poss\u00e8de un diam\u00e8tre de 30\u00a0000\u00a0ann\u00e9es-lumi\u00e8re<\/span> environ. Elle s’\u00e9loigne du syst\u00e8me solaire \u00e0 la vitesse de 537\u00a0km\/s<\/span>. Elle est class\u00e9e de type Sbp sur la s\u00e9quence de Hubble<\/a>, les bras spiraux \u00e9tant bien visibles sur les images, d\u00e9limit\u00e9s notamment par des r\u00e9gions d’intense activit\u00e9 de formation stellaire<\/a>, o\u00f9 l’on peut apercevoir de nombreuses \u00e9toiles bleues, tr\u00e8s jeunes et tr\u00e8s chaudes, et des nuages de gaz ionis\u00e9<\/a>, ou r\u00e9gions HII<\/a>, de couleur rouge.<\/p>\n

M106 est connue pour rayonner tr\u00e8s fortement dans le domaine des ondes radio<\/a>, et est \u00e0 ce titre class\u00e9e comme galaxie de Seyfert<\/a> de type 1,9<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Donn\u00e9es d\u2019observation
\n(\u00c9poque<\/a> J2000.0<\/a>)<\/small><\/th>\n<\/tr>\n
Constellation<\/a><\/th>\nChiens de chasse<\/a><\/td>\n<\/tr>\n
Ascension droite<\/a> (\u03b1)<\/th>\n12h<\/sup>\u00a018m<\/sup>\u00a057,54s<\/sup><\/td>\n<\/tr>\n
D\u00e9clinaison<\/a> (\u03b4)<\/th>\n+47\u00b0\u00a018\u2032\u00a014,3\u2033<\/td>\n<\/tr>\n
Distance<\/th>\n21 ~ 25 millions\u00a0al<\/a><\/span>
\n(6\u00a04 ~ 7\u00a07 millions\u00a0pc<\/a><\/span>)<\/td>\n<\/tr>\n
Magnitude apparente<\/a> (V)<\/small><\/th>\n+8,4<\/td>\n<\/tr>\n
Dimensions apparentes (V)<\/small><\/th>\n19×8 minutes d’arc<\/a><\/td>\n<\/tr>\n
Caract\u00e9ristiques physiques<\/th>\n<\/tr>\n
Type d’objet<\/th>\nGalaxie spirale<\/a> type Sbp<\/td>\n<\/tr>\n
D\u00e9couverte<\/th>\n<\/tr>\n
D\u00e9couvreur(s)<\/th>\nPierre M\u00e9chain<\/a><\/td>\n<\/tr>\n
Date<\/th>\n1781<\/a><\/td>\n<\/tr>\n
D\u00e9signation(s)<\/th>\nM106, NGC 4258<\/td>\n<\/tr>\n
Liste des objets c\u00e9lestes<\/a><\/th>\n<\/tr>\n<\/tbody>\n<\/table>\n

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