Galaxies IC 3528 & NGC 4540 - Supernova 2001z

Supernova 2001z:

• Discovered: March 3rd, 2001, at Lick Observatory by the LOTOSS group.
• Magnitude 18.3 at discovery.
• Type II, discovered near maximum light.

Follow this Link to a NASA Web site on supernovas. It has a very nice animation and a description of what these objects are.

Galaxies IC 3528, NGC 4550, and PGC 41845:

Spiral Galaxies IC 3528 (with Supernova 2001z) and NGC 4540 are a non-interacting pair in the Constellation of Coma Berenices. They have very different red shifts and probably are not near each other in space. They just happen to lie along the same line of sight. NGC 4540 appears to be in the Coma/Virgo galaxy cluster, lying about 60 to 70 million light years away, while IC 3558 is at a much further distance, roughly 730 million light years.

While NGC 4540 has a brightening in the middle, there is no definite nucleus. It has very many bright knotty arms with dark lanes. IC 3528 seems to be a normal spiral. Both of these galaxies have an Active Galactic Nucleus of Seyfert type I.

Dwarf Elliptical Galaxy PGC 41845 is partly cut off in the upper right of the Kopernik image. There is little published information about this dim 16th magnitude galaxy.

IC 3528 Magnitude: 15.2 Constellation: Coma Berenices RA: 12h 34m 55.9s Dec: +15° 33' 56" Epoch 2000 Size (mins): 0.5' Classification: SAB(r)b, Sy1    Mixed Barred Non-Barred Spiral, Inner Ring, Seyfert Type I Dreyer description in the IC:     "Brighter middle....."

NGC 4540 Magnitude: 12.0 Constellation: Coma Berenices RA: 12h 34m 50.9s Dec: +15° 33' 10" Epoch 2000 Size (mins): 1.9' x 1.5' Classification: SAB(rs)cd; Sy1        Mixed Barred Non-Barred Spiral, Mixed Inner Ring S-shaped, Seyfert Type I Dreyer description in the NGC:     "Faint, pretty small, brighter middle, resolvable, but mottled."

Click below to

George Normandin, KAS

March 29th, 2001