- L70 minutes (14 frames)
- R70 minutes (14 frames)
- B70 minutes (14 frames)
- G70 minutes (14 frames)
NGC 4236 is a spiral galaxy located in the constellation Draco, approximately 10 million light-years from Earth. It is a type of barless spiral galaxy, also known as incomplete spiral galaxies.
Discovery and History
The galaxy was discovered by William Herschel on April 6, 1793. Herschel described the object as "a very large nebula" and noted its unusual size and faint brightness. In 1831, his son John Herschel observed the object and noted it as "vast, very faint, and greatly elongated".
Structure and Features
NGC 4236 has a diameter of about 50 thousand light-years and consists of two main parts: the central galaxy and the more tenuous outer region. The central part of the galaxy contains multiple spiral arms made of gas and dust, indicating ongoing star formation.
Star Formation and Activity
The galaxy is actively forming new stars, especially in its central and outer regions. Clusters of hot, young stars have been detected in these regions, indicating ongoing star formation. This makes NGC 4236 an important target for studying star formation in small spiral galaxies.
Location in a group of galaxies
NGC 4236 is part of the M81 Group, a cluster of galaxies located about 11.7 million light-years from Earth. The group also includes such well-known objects as Messier 81 and Messier 82, which are striking examples of spiral and stellar galaxies.
Scientific Implications
Studying NGC 4236 helps scientists better understand the processes of star formation in galaxies and their impact on the evolution of the universe. This galaxy serves as a model for studying how stars form in less massive galaxies and how this affects their long-term evolution.
Visibility chart of Spiral Galaxy NGC 4236 during the day
| Date | Moon Phase | Exposure | CCD Temperature | Gain | Offset | Filter |
|---|---|---|---|---|---|---|
- 2023ixf•
- 40 Eri•
- Abell 74•
- Artemis A868 SA•
- a Canis Minoris•
- C 2020 R4 ATLAS•
- C 2020 T2 Palomar•
- C 2021 S3 (PANSTARRS)•
- Haumea (2003 EL61)•
- HCG 68•
- HCG 92•
- IC 1318B•
- IC 1396•
- IC 1795•
- IC 1805•
- IC 1848•
- IC 1871•
- IC 3322A•
- IC 342•
- IC 4015•
- IC 405•
- IC 417•
- IC 434•
- IC 443•
- IC 4703•
- IC 5070•
- IC 5146•
- IC 63•
- M 1•
- M 101•
- M 103•
- M 109•
- M 13•
- M 15•
- M 27•
- M 3•
- M 33•
- M 42•
- M 45•
- M 5•
- M 51•
- M 57•
- M 63•
- M 64•
- M 74•
- M 76•
- M 81•
- M 82•
- M 86•
- M 87•
- M 94•
- M 97•
- NGC 147•
- NGC 1491•
- NGC 1499•
- NGC 1579•
- NGC 1961•
- NGC 2146•
- NGC 2239•
- NGC 2403•
- NGC 281•
- NGC 4236•
- NGC 4565•
- NGC 4631•
- NGC 507•
- NGC 508•
- NGC 5866•
- NGC 5907•
- NGC 6503•
- NGC 6823•
- NGC 6888•
- NGC 6946•
- NGC 6992•
- NGC 6995•
- NGC 7000•
- NGC 7023•
- NGC 7129•
- NGC 7217•
- NGC 7331•
- NGC 7380•
- NGC 7538•
- NGC 7635•
- NGC 7640•
- NGC 7822•
- NGC 891•
- NGC 896•
- NGC 925•
- PGC 54559•
- Sh2-155•
- Sh2-168•
- Sh2 103•
- Sh2 109•
- Sh2 132•
- T CrB•
- UGC 6930•
- V1405 Cas•
- Vesta A807 FA•