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ARP 104
Remote observatory
Sierra Remote Observatories
N
UMa
13h
32m
6s
·
+62°
44′
18″
0.23°
0.20″/px
0.19°N
Integration
154×300″ | 12h 50′ | |||
15×1200″ | 5h | |||
25×1200″ | 8h 20′ | |||
33×1200″ | 11h | |||
Totals | 37h 10′ |
154×300″=12h 50′ | |
15×1200″=5h | |
25×1200″=8h 20′ | |
33×1200″=11h | |
| Totals | 37h 10′ |
Equipment
Objects
Description
Here is what I found already written about ARP 104. You can also see a stream of gas and stars going "up" from NGC 5218 in addition to the bridge stream described below.
"Arp 104, also known as Keenan's System, is a pair of galaxies that are connected by a stream of gas where new stars are forming:
The two galaxies are joined by a bridge of gas that's about 150,000 light years long. The gas was pulled out when the galaxies passed each other, and the newly formed stars make the stream appear blue.
Here are some other facts about Arp 104:
"Arp 104, also known as Keenan's System, is a pair of galaxies that are connected by a stream of gas where new stars are forming:
- NGC 5216: An elliptical galaxy
- NGC 5218: A disturbed disk galaxy
The two galaxies are joined by a bridge of gas that's about 150,000 light years long. The gas was pulled out when the galaxies passed each other, and the newly formed stars make the stream appear blue.
Here are some other facts about Arp 104:
- William Herschel discovered the galaxies in 1790.
- Edwin Hubble studied the galaxies in 1926.
- Philip C. Keenan published a paper about the bridge connecting the galaxies in 1935.
- The bridge was rediscovered in 1958 at the Lick and Palomar observatories.
- The stellar bridge has a uniform optical surface brightness."
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