by harry » Mon Jun 12, 2006 10:45 am
Hello All
http://antwrp.gsfc.nasa.gov/apod/ap020408.html
Lenticular galaxies aren't supposed to be photogenic. Like spiral galaxies, they contain a disk, but like elliptical galaxies, they are usually short on dust, gas, and pretty spiral arms. Lenticulars are relatively little studied, possibly because of their seemingly benign nature. Famous galaxies historically classified as lenticular include M84, M85, and M86
M84
http://www.seds.org/messier/m/m084.html
M86
http://www.seds.org/messier/m/m086.html
http://heritage.stsci.edu/2002/07/default.html
http://heritage.stsci.edu/2002/07/supplemental.html
Tightly wound, almost concentric, arms of dark dust encircle the bright nucleus of the galaxy NGC 2787 in this Hubble Space Telescope image. In astronomer Edwin Hubble's galaxy classification scheme, NGC 2787 is classified as an SB0, a barred lenticular galaxy. These lens-shaped galaxies show little or no evidence of the grand spiral arms that occur in their more photogenic cousins, though NGC 2787 does sport a faint bar, not apparent in the Hubble image, but visible in the ground-based image below.
Different forms of galaxies
http://www.seds.org/messier/galaxy.html
http://www-thphys.physics.ox.ac.uk/user ... lenticular
Hello All
http://antwrp.gsfc.nasa.gov/apod/ap020408.html
[quote]Lenticular galaxies aren't supposed to be photogenic. Like spiral galaxies, they contain a disk, but like elliptical galaxies, they are usually short on dust, gas, and pretty spiral arms. Lenticulars are relatively little studied, possibly because of their seemingly benign nature. Famous galaxies historically classified as lenticular include M84, M85, and M86[/quote]
M84
http://www.seds.org/messier/m/m084.html
M86
http://www.seds.org/messier/m/m086.html
http://heritage.stsci.edu/2002/07/default.html
http://heritage.stsci.edu/2002/07/supplemental.html
[quote]Tightly wound, almost concentric, arms of dark dust encircle the bright nucleus of the galaxy NGC 2787 in this Hubble Space Telescope image. In astronomer Edwin Hubble's galaxy classification scheme, NGC 2787 is classified as an SB0, a barred lenticular galaxy. These lens-shaped galaxies show little or no evidence of the grand spiral arms that occur in their more photogenic cousins, though NGC 2787 does sport a faint bar, not apparent in the Hubble image, but visible in the ground-based image below.[/quote]
Different forms of galaxies
http://www.seds.org/messier/galaxy.html
http://www-thphys.physics.ox.ac.uk/users/Galactic/layman/gal_types.html#lenticular