Galaxies NGC 6104
and MCG 6-36-12
This is an 15 minute exposure with an
ST-9E CCD camera thru Kopernik's 20-inch F/8.1 Ritchey Chretien Cassegrain
telescope taken on July 11, 2002 at 4:00 UT. The field of view is 8x8 arc
minutes with North at the top.
- Discovered: June 1, 2002, by the
group's Katzman Automatic Imaging Telescope (KAIT).
- Magnitude 16.0 at discovery.
- Type Ia
- The expansion velocity is 12,000
Follow this Link
to a NASA Web site on supernovas. It has a very nice animation and a description
of what these objects are.
NGC 6104, the host of Supernova 2002de,
is a highly disturbed Spiral Galaxy in the Constellation of Corona Borealis.
It has a bright nucleus, a nuclear bar, and a strongly disturbed spiral
pattern that appears like a ring in the Kopernik image above. This galaxy
has a Seyfert
type Active Galactic Nucleus.
MCG 6-36-12 is the 15th magnitude
elliptical galaxy that is to the left of NGC 6104 in the picture above.
Another dim galaxy is in the upper right of the image. All three of these
galaxies have about the same red shift.
Using the red shift data from the
“NASA Extra-galactic Data Base(NED)”,
(and a Hubble Constant of 62 Km per sec., per Megaparsec), one can calculate
a rough distance estimate for these galaxies, and SN 2002de, of about 440
million light years.
- NGC 6104
- Constellation: Corona Borealis
16h 16m 30.5s
- Dec: +35° 42' 25" Epoch
- Size (mins): 0.8' x 0.7'
Galaxy, Outer Ring, peculiar, Seyfert Type I
Dreyer description in the NGC:
faint, small, irregularly round."
- MCG 6-36-12
- Magnitude: 15.4
16h 16m 50.0s
- Dec: +35° 42' 07" Epoch
- Size (mins): 0.5' x 0.5'
George Normandin, KAS
July 11th, 2002