cD-galax

En cD-galax är en tung, mycket ljusstark galax av elliptisk typ som återfinns i centrum av rika galaxhopar. cD-galaxer skiljer sig från vanliga elliptiska galaxer genom en mycket omfattande halo av stjärnor.

Exempel på cD-galaxer

Perseus A (NGC 1275) i stjärnbilden Perseus i galaxhopen Perseushopen (Abell 426).^[1]
NGC 6166 i stjärnbilden Herkules i galaxhopen Abell 2199.^[2]
IC 1101 i stjärnbilden Jungfrun i galaxhopen Abell 2029. Det är galaxen med den största kända diametern (runt 5.5 miljoner ljusår).^[3]^[4]^[5]
Messier 87 i stjärnbilden Jungfrun är centralgalax i Virgohopen.
NGC 1399 i stjärnbilden Ugnen är centralgalax i Fornaxhopen.^[6]
NGC 4889 (Caldwell 35) i stjärnbilden Berenikes hår. Galaxen är den ljusaste i Comahopen.
NGC 6086 i stjärnbilden Norra kronan.^[7] Galaxen är den ljusaste i galaxhopen Abell 2162.^[8]
QSO 0957 i stjärnbilden Stora björnen är en kvasar som ledde till att den första gravitationslinsen identifierades.^[9]

Referenser

Noter

^ Nature, "FIGURE 4. Optical, radio and X-ray images of the Perseus cluster." 9 July 2009, ISSN 0028-0836 ; EISSN 1476-4687 ; (accessed 15 April 2010)
^ Nature, "FIGURE 3. The entropy of the intracluster medium in spherical shells of radius r." 9 July 2009, ISSN 0028-0836 ; EISSN 1476-4687 ; (accessed 15 April 2010)
^ Science, "The Central Galaxy in Abell 2029: An Old Supergiant", Juan M. Uson, Stephen P. Boughn, and Jeffrey R. Kuhn, 26 October 1990, Vol. 250, no. 4980, pp.539-540, doi:10.1126/science.250.4980.539
^ Ellensburg Daily Record, "Galaxy Found", United Press International, 27 October 1990, p.16
^ Lodi News-Sentinel, "Giant Galaxy Discovered", UPI, 26 October 1990, pg.9
^ ”Multiwavelength Atlas of Galaxies - NGC 1399”. http://astronomy.swin.edu.au/~gmackie/atlas/index/n1399/n1399.html. Läst 18 juni 2011.
^ Rumistrzewicz, Stefan (2010). A Visual Astronomer's Photographic Guide to the Deep Sky: A Pocket Field Guide. New York, New York: Springer Science & Business Media. sid. 158. ISBN 9781441972422. http://books.google.com/?id=Vhjn3DEJpyIC&pg=PA158&dq=%22NGC+6085%22#v=onepage&q=%22NGC%206085%22&f=false
^ McConnell, Nicholas J.; Ma, Chung-Pei; Graham, James R.; Gebhardt, Karl; Lauer, Tod R.; Wright, Shelley A.; Richstone, Douglas O. (2011). ”The Black Hole Mass in the Brightest Cluster Galaxy NGC 6086”. The Astrophysical Journal 728 (2): sid. 100. doi:10.1088/0004-637X/728/2/100. Bibcode: 2011ApJ...728..100M. http://iopscience.iop.org/0004-637X/728/2/100/article.
^ Nature 279, S.381-384: 0957 + 561 A, B: twin quasistellar objects or gravitational lens? D.Walsh, R.F.Carswell, R.J.Weymann 31 May 1979

Övriga källor

Nationalencyklopedin

[1] Nature, "FIGURE 4. Optical, radio and X-ray images of the Perseus cluster." 9 July 2009, ISSN 0028-0836 ; EISSN 1476-4687 ; (accessed 15 April 2010)

[2] Nature, "FIGURE 3. The entropy of the intracluster medium in spherical shells of radius r." 9 July 2009, ISSN 0028-0836 ; EISSN 1476-4687 ; (accessed 15 April 2010)

[3] Science, "The Central Galaxy in Abell 2029: An Old Supergiant", Juan M. Uson, Stephen P. Boughn, and Jeffrey R. Kuhn, 26 October 1990, Vol. 250, no. 4980, pp.539-540, doi:10.1126/science.250.4980.539

[4] Ellensburg Daily Record, "Galaxy Found", United Press International, 27 October 1990, p.16

[5] Lodi News-Sentinel, "Giant Galaxy Discovered", UPI, 26 October 1990, pg.9

[forn1-6] ”Multiwavelength Atlas of Galaxies - NGC 1399”. http://astronomy.swin.edu.au/~gmackie/atlas/index/n1399/n1399.html. Läst 18 juni 2011.

[7] Rumistrzewicz, Stefan (2010). A Visual Astronomer's Photographic Guide to the Deep Sky: A Pocket Field Guide. New York, New York: Springer Science & Business Media. sid. 158. ISBN 9781441972422. http://books.google.com/?id=Vhjn3DEJpyIC&pg=PA158&dq=%22NGC+6085%22#v=onepage&q=%22NGC%206085%22&f=false

[8] McConnell, Nicholas J.; Ma, Chung-Pei; Graham, James R.; Gebhardt, Karl; Lauer, Tod R.; Wright, Shelley A.; Richstone, Douglas O. (2011). ”The Black Hole Mass in the Brightest Cluster Galaxy NGC 6086”. The Astrophysical Journal 728 (2): sid. 100. doi:10.1088/0004-637X/728/2/100. Bibcode: 2011ApJ...728..100M. http://iopscience.iop.org/0004-637X/728/2/100/article.

[9] Nature 279, S.381-384: 0957 + 561 A, B: twin quasistellar objects or gravitational lens? D.Walsh, R.F.Carswell, R.J.Weymann 31 May 1979

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