Star Formation Region Avedisova 789

Catalog name: 49.00-0.29

Prominent object names: [L89b] 48.997-00.295, [M94] 49.5 -0.4 b, W51B, W51B [glossary]

Westerhout radio sources: W51B = [M94] 49.5 -0.4 b (PartofCloud) [33]

IRAS infrared sources (2): IRAS 19201+1400 (IR) [8], IRAS 19200+1403 (IR) [5]

Masers: 1 hydroxyl, 1 water

Distance estimates for objects in this region

Object PositionSize (arcmin) Source Note Distance(s)
[L89b] 48.997-0.295 48.997-0.295 2009ApJ...690..706A V 5600
[L89b] 49.060-0.260 49.060-0.260 2009ApJ...690..706A V 5600

For more information on distance estimates see Avedisova distances.

Detailed component listing with references (9 components)

Main objectR W51B [1991MNRAS.250..127C], R [1970A&A.....4..357R], R [1970A&AS....1..319A], R [1978A&A....70..719C], R [2000AJ....119.2801L]
49.2 -00.3M H2CO cloud [1982A&AS...49..607B], M HI-A [1994ApJ...436..117K], M OH-A [1974AZh....51..685S]
48.997-00.295R [1979A&AS...35...23A], R [1970A&A.....6..364W], R #4 [1968ApJ...154..833M], R [1997ApJS..108..489K], R [1979A&A....75..365P], R [1989ApJS...71..469L], M HI-A [1997ApJS..108..489K], M CO [1974ApJ...191..357W]
48.981-00.281IR [1976AJ.....81..399C], IR [1983MNRAS.205..653L]
48.990-00.301IR 19201+1400 [1988IRASP.C......0J], M OH-E [1997A&A...325..255B]
48.997-00.295M H2O-E [1994A&A...291..261C], M H2O-E [1994A&AS..103..541B]
49.021-00.251IR 19200+1403 [1988IRASP.C......0J]
49.06 -00.26R [1980A&AS...40..379D], R [1979A&AS...35...23A], R #3 [1968ApJ...154..833M], R [1974ApJ...192..337G], R [1989ApJS...71..469L], M HI-A [1994ApJ...436..117K], M H2CO [1980A&AS...40..379D]
49.096-00.274R [1997ApJS..108..489K], M HI-A [1997ApJS..108..489K], R [1979A&A....75..365P]

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?