- Introduction
- Face-on map overview
- Sources
- The Cloud Hunters
- The Star Sweepers
- Things Unseen: The Westerhout radio sources
- The Avedisova catalog: A real Hitchhiker's Guide to the Galaxy?
- Avedisova glossary
- Introduction to the Milky Way Explorer
- Commentary on the Galactic Plane
- Hydrogen-alpha commentary
- Fragments
Star Formation Region Avedisova 281
Catalog name: 18.88-0.45
Prominent object names: [L89b] 18.900-00.461, [WHR97] 18239-1228, W 39 [glossary]
Westerhout radio sources: W 39 (Radio) [15]
IRAS infrared sources (8): IRAS 18238-1245 (IR) [1], IRAS 18241-1246 (IR) [1], IRAS 18236-1241 (IR) [8], IRAS 18242-1241 (IR) [2], IRAS 18244-1233 (IR) [0], IRAS 18239-1228 = [WHR97] 18239-1228 (HII) [22], IRAS 18237-1226 (IR) [2], IRAS 18242-1227 (IR) [6]
Masers: 1 hydroxyl, 1 water, 1 methanol
Other component designations: RAFGL 2153, RAFGL 2157
Distance estimates for objects in this region
| Object | Position | Size (arcmin) | Source | Note | Distance(s) |
|---|---|---|---|---|---|
| SYCSW 226H | 19.02-0.60 | 9.0x3.0 | 1987ApJS...63..821S | V | 5300 |
| SYCSW 226 | 18.81-0.48 | 81.0x72.0 | 1987ApJS...63..821S | V | 5300 |
| SYCSW 226D | 18.83-0.50 | 15.0x18.0 | 1987ApJS...63..821S | V | 5300 |
| SYCSW 226C | 18.80-0.35 | 3.0x3.0 | 1987ApJS...63..821S | V | 5300 |
| [L89b] 18.881-0.493 | 18.881-0.493 | 2009ApJ...690..706A | V | 4700 | |
| [L89b] 19.044-0.431 | 19.044-0.431 | 2009ApJ...690..706A | V | 4700 | |
| SRBY 66 | 18.85-0.5 | 30.3 | 1987ApJ...319..730S | P | 5600 |
For more information on distance estimates see Avedisova distances.
Detailed component listing with references (40 components)
Acknowledgement: based on the Catalog of Star-Forming Regions in the Galaxy ( Avedisova, V. S., Astronomy Reports, Volume 46, Issue 3, March 2002, pp.193-205 [2002ARep...46..193A]). The complete catalog can be accessed here: V/112/.
For more information, read The Avedisova catalog: A real Hitchhiker's Guide to the Galaxy?
