Katalog Terzana
Katalog Terzana – katalog astronomiczny zawierający 11 gromad kulistych ukrytych za galaktycznym centrum Drogi Mlecznej, widocznych w podczerwieni, odkrytych przez francuskiego astronoma Agopa Terzana. Początkowo, w wyniku błędu, katalog ten zawierał 12 gromad przy czym gromada Terzan 5 znalazła się w nim po raz drugi jako Terzan 11. Błąd ten został naprawiony poprzez zmianę nazwy gromady Terzan 12 na Terzan 11.
Dane obserwacyjne
| Obiekt | Gwiazdozbiór | Rektascensja (J2000)[1] | Deklinacja (J2000)[1] | Wielkość gwiazdowa[1] | Rozmiar kątowy[1] |
|---|---|---|---|---|---|
| Terzan 1 | Skorpion | 17h 35m 47,8s | -30° 28′ 11″ | 13,9 | 2,4' |
| Terzan 2 | Skorpion | 17h 27m 33,4s | -30° 48′ 08″ | 14,29 | 0,7' |
| Terzan 3 | Skorpion | 16h 28m 40,1s | -35° 21′ 13″ | 12,0 | 4,0' |
| Terzan 4 | Skorpion | 17h 30m 38,9s | -31° 35′ 44″ | 16,0 | 0,7' |
| Terzan 5 | Strzelec | 17h 48m 04,9s | -24° 48′ 45″ | 13,85 | 2,1' |
| Terzan 6 | Skorpion | 17h 50m 46,4s | -31° 16′ 31″ | 13,85 | 1,2' |
| Terzan 7 | Strzelec | 19h 17m 43,7s | -34° 39′ 27″ | 12,0 | 6,0' |
| Terzan 8 | Strzelec | 19h 41m 45s | -34° 00′ 01″ | 12,4 | 4,4' |
| Terzan 9 | Strzelec | 18h 01m 38,8s | -26° 50′ 23″ | 16,0 | 1,5' |
| Terzan 10 | Strzelec | 18h 02m 57,4s | -26° 04′ 00″ | 14,9 | b. d. |
| Terzan 11 | Strzelec | 18h 12m 15,8s | -22° 44′ 31″ | 16,4 | 1,5' |
Zobacz też
Przypisy
- ↑ a b c d Gromady Terzana. W: Barbara Wilson [on-line]. [dostęp 2009-09-30].
Linki zewnętrzne
- Gromady Terzana (ang.)
Media użyte na tej stronie
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The Crab Nebula derived its name from its appearance in a drawing made by Irish astronomer Lord Rosse in 1844, using a 36-inch telescope. When viewed by Hubble, as well as by large ground-based telescopes such as the European Southern Observatory's Very Large Telescope, the Crab Nebula takes on a more detailed appearance that yields clues into the spectacular demise of a star, 6,500 light-years away.
The newly composed image was assembled from 24 individual Wide Field and Planetary Camera 2 exposures taken in October 1999, January 2000, and December 2000. The colors in the image indicate the different elements that were expelled during the explosion. Blue in the filaments in the outer part of the nebula represents neutral oxygen, green is singly-ionized sulfur, and red indicates doubly-ionized oxygen.