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Wildrik Botjes Planetarium
Physics & Astronomy Department

Astr112 Photography Projects, Fall 2007

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NGC 1055 , James Dekens

NGC 1055

NGC 1055 is an edge-on spiral galaxy lying in the constellation Cetus. NGC 1055 is part of a binary system with the galaxy M77 and is part of the M77 group of galaxies. It was disvored by William Herschell on December 9th,1783. Based on a redshift of 0.003314 and the hubble constant we can calculate it's distance to be 45 million light years. It's linear size is 33000 LY.

NGC 1055 is viewed edge-on. The arms of the galaxy obscure the view of the top portion of the bulge at the center. The most noticeable thing about this galaxy is bright and massive bulge at the center. Because of the tilt of the galaxy, and the large dust lane, the top portion of this bulge is not visible except for light extending from above the dust lane. The dust lane from the arms that obscures the view of the bulge is very thick as it absorbs nearly all the light behind it that is emitted by the bulge. Looking closer one can see multiple galactic arms extending from the center.

References:
Robert Nemiroff (MTU) & Jerry Bonnell (USRA) "NGC 1055 and M77"
http://apod.nasa.gov/apod/ap061215.html

Frommert, Hartmut and Kronberg, Christine. "NGC 1055 ." Students for the Exploration and Development of Space.
http://seds.lpl.arizona.edu/messier//xtra/ngc/n1055.html

NASA Extragalactic Database
http://nedwww.ipac.caltech.edu/

Right Ascension (J2000) 02:41:44.7
Declination (J2000) 00:26:31
Filters used (c)Clear
Exposure time per filter 4 x 300sec
Date observed

October 19, 2007