Dictionary of Nomenclature of Celestial Objects

s often designated as <Cyg OB2 NNA> in the literature. See also Schulte.
in source:NAME VI Cyg = Ass Cyg OB 2
Ref:=1953ApJ...118..161M
byMUNCH L. , MORGAN W.W.
 Astrophys. J., 118, 161-162 (1953)
  A probable clustering of blue giants in Cygnus.
o<Schulte NN> (Nos 1-11) = <[MM53] Cyg OB2 NN> (Nos 1-11).
Ref:=1954ApJ...119..344J
byJOHNSON H.L. , MORGAN W.W.
 Astrophys. J., 119, 344-345 (1954)
  A heavily obscured O-association in Cygnus.
o<Schulte NNA> (Nos 8A-8D) added = <[MM53] Cyg OB2 NNA> (Nos 8A-8D) added.
Ref:=1954PASP...66...85M
byMORGAN W.W. , JOHNSON H.L., ROMAN N.G.
 Publ. Astron. Soc. Pac., 66, 85-87 (1954)
  A very red star of early type in Cygnus.
o<Schulte NNA> (No. 12) added = <[MM53] Cyg OB2 NNA> (No. 12) added.
Ref:=1954ApJ...120..506M
byMORGAN W.W. , MEINEL A.B., JOHNSON H.M.
 Astrophys. J., 120, 506-508 (1954)
  Spectral classification with exceedingly low dispersion.
oFig. 5: <Schulte NNA> (Nos 13-19) = <[MM53] Cyg OB2 NNA> (Nos 13-19) added.
Ref:=1956ApJ...123..250S
bySCHULTE D.H.
 Astrophys. J., 123, 250-252 (1956)
  Some recent results of low-dispersion spectral classification.
oFigs 3, 4: <Schulte NNA> (Nos 20-30) added = <[MM53] Cyg OB2 NNA> (Nos 20-30) added. Fig.6: <Cl* NGC 6618 Sch N> (Nos 1-2).
Ref:=1956ApJ...124..530S
bySCHULTE D.H.
 Astrophys. J., 124, 530-532 (1956)
  New members of the association VI Cygni.
oFig. 6: <Schulte NN> (Nos 31-85) added = <[MM53] Cyg OB2 NNA> (Nos 31-85) added.

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