NGC 51, 49, 48 and IC 1534, 1535, & 1536
Galaxy Cluster - Supernova 2000cz

Supernova 2000cz:

• Discovered: July 29th, 2000, by Mark Armstrong.
• Magnitude 18.0 at discovery, and too dim to measure in the Kopernik image.
• Type II, after max brightness

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

Lenticular Galaxy NGC 51 is the brightest of this isolated group of 6 dim galaxies in northern Andromeda. All show some signs of disturbance and all but Spiral Galaxy NGC 48 have approximately the same red shift. However, if NGC 48's published red shift is correct, it is very small for a spiral galaxy. If on the other hand it is a true member of this small cluster of interacting galaxies, it is closer to 'normal size'. The Type II supernovae, like 2000cz in IC 1535, are thought to result from the explosion of very massive young stars found in the arms of spiral galaxies. This confirms that IC 1535 is a spiral galaxy.

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 the NGC 51 galaxy cluster, and SN 2000 cz, of about 275 million light years.

NGC 51 Magnitude: 14.1 Constellation: Andromeda RA: 00h 14m 34.9s Dec: +48° 15' 22" Epoch 2000 Size (mins): 1.3' x 1.0' Classification: SO pec        Lenticular, peculiar Deep Sky Field Guide:        "Brightest in a group of 6."	NGC 49 Magnitude: 14.7 Constellation: Andromeda RA: 00h 14m 22.4s Dec: +48° 14' 47" Epoch 2000 Size (mins): 1.1' x 1.0' Classification: S0?        Lenticular (uncertain) Dreyer description in the NGC:     "Most extremely faint, small, round, 2nd of 3."
NGC 48 Magnitude: 14.4 Constellation: Andromeda RA: 00h 14m 02.1s Dec: +48° 14' 06" Epoch 2000 Size (mins): 1.4' x 0.9' Classification: SABbc pec:        Mixed Barred Non-Barred Spiral,         peculiar, (uncertain) Deep Sky Field Guide:        "Second brightest in a group of 6."	IC 1536 Magnitude: 15.0 Constellation: Andromeda RA: 00h 14m 19.3s Dec: +48° 08' 34" Epoch 2000 Size (mins): 0.9' x 0.8' Classification: Uncertain         Dreyer description in the IC:        "Faint, small, round."
IC 1535 Magnitude: 14.9 Constellation: Andromeda RA: 00h 13m 57.3s Dec: +48° 09' 29" Epoch 2000 Size (mins): 1.3' x 0.3' Classification: Spiral Galaxy Dreyer description in the IC:        "Very faint, small, NGC 48 to northeast 6 arc minutes."	IC 1534 Magnitude: 14.8 Constellation: Andromeda RA: 00h 13m 45.4s Dec: +48° 09' 04" Epoch 2000 Size (mins): 1.0' x 0.5' Classification: SO        Lenticular Galaxy Dreyer description in the IC:        "Pretty faint, very small, difficult, 10th magnitude star nearby northeast."

Click below to

George Normandin, KAS

August 7th, 2000