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Star Formation Region Avedisova 1156

Catalog name: 90.56+2.15

Prominent object names: LDN 988, V* V1982 Cyg [glossary]

IRAS infrared sources (6): IRAS 21007+4951 = [C86] L988 a (Star) [20], IRAS 21020+4939 (IR) [7], IRAS 21014+5001 = WB89 25 (Star) [6], IRAS 21024+4955 = [C86] L988 f (Star) [11], IRAS 21023+5002 = V* V1982 Cyg (Orion_V*) [48], IRAS 21007+5036 (IR) [7]

Masers: 1 hydroxyl, 1 water

Other component designations: DG 169 = LBN 409 (RfNeb) [4], DG 170 = LBN 408 (RfNeb) [4], DG 171 = LBN 411 (RfNeb) [5], LDN 988 (DkNeb) [14]

Distance estimates for objects in this region

Object PositionSize (arcmin) Source Note Distance(s)
WB89 23 1989A&AS...80..149W I 11260, 100
WB89 25 1989A&AS...80..149W I 960
WB89 30 1989A&AS...80..149W I 1140, 100, 100
WB89 29 1989A&AS...80..149W I 1420
WB89 24 1989A&AS...80..149W I 2710, 940

For more information on distance estimates see Avedisova distances.

Detailed component listing with references (14 components)

Main objectD L_988 [1962ApJS....7....1L]
90.4 +02.3O DG 169 [1963AN....287..257D]
90.211+02.324IR [1995MNRAS.276.1024J]
90.210+02.324IR*21007+4951 [1988IRASP.C......0J], M CS [1999A&AS..139..257L]
90.210+02.325M H2O-E [1995MNRAS.276.1024J], M H2O-E L_988a [1992A&A...255..293F], M H2O-E [1994A&AS..103..541B], M CO [1989A&AS...80..149W], M CO outflow [1986A&A...164...19C], M CS [1996A&AS..115...81B], M OH [1997A&AS..124...85S]
90.212+02.040IR 21020+4939 L_988d [1988IRASP.C......0J], IR 21020+4939 [1988IRASP.C......0J]
90.407+02.354IR 21014+5001 L_988c [1988IRASP.C......0J], IR 21014+5001 [1988IRASP.C......0J], M CO L_988 [1989A&AS...80..149W]
90.5 +02.2O DG 171 [1963AN....287..257D]
90.446+02.176IR*21024+4955 L_988f [1988IRASP.C......0J], IR*21024+4955 [1988IRASP.C......0J], M CO outflow [1986A&A...164...19C], M CO [1989A&AS...80..149W]
90.522+02.262IR*21023+5002 L_988e [1988IRASP.C......0J], IR*21023+5002 [1988IRASP.C......0J], M CS [1999A&AS..139..257L]
90.5 +02.3O DG 170 [1963AN....287..257D]
90.522+02.262IR Cluster [1994ApJS...94..615H], IR nebulae [1994ApJS...94..615H], M CO outflow [1986A&A...164...19C], M CO [1989A&AS...80..149W]
90.706+02.173M OH-E [1987A&A...176..114C]
90.778+02.828IR 21007+5036 L_988b [1988IRASP.C......0J], IR 21007+5036 [1988IRASP.C......0J]

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?