NGC 663

Number of stars per data source

	Reference  173 :    6 stars
	Reference  252 :    1 star
	Reference  270 :    3 stars
	Reference  433 :    2 stars
	Reference  457 :    2 stars
	Reference  485 :    1 star
	Reference  815 :    6 stars
	Reference  841 :    2 stars
	Reference  873 :    2 stars
	Reference  876 :    1 star
	Reference 1221 :    1 star
	Reference 1341 :   24 stars
	Reference 1462 :    1 star

References

173: Hiltner W.A.; (1956) Astrophys. J. Suppl. 2, 389; Photometric polarization and spectrographic observations of O and B Stars; 1956ApJS....2..389H
252: Humphreys R.M.; (1970) Astron. J. 75, 602; The space distribution and kinematics of supergiants; 1970AJ.....75..602H
270: McCuskey S.W., Pesch P., Snyder G.A.; (1974) Astron. J. 79, 597; The space distribution and radial velocities of some early-type stars in the Perseus spiral arm; 1974AJ.....79..597M
433: Bern K., Virdefors B.; (1972) Astron. Astrophys. Suppl. 6, 117; Photoelectric UBV photometry in Cygnus and Cassiopeia; 1972A&AS....6..117B
457: Neckel H.; (1974) Astron. Astrophys. Suppl. 18, 169; Photoelectric catalogue of 1030 BD M-type stars located a long the galactic equator; 1974A&AS...18..169N
485: Tempesti P.; (1980) Astron. Astrophys. Suppl. 39, 115; Photoelectric observations of the long-period eclipsing system AZ Cassiopeiae; 1980A&AS...39..115T
841: Bouigue R.; (1959) Ann. Obs. Toulouse 27, 47; Contribution aux recherches de photometrie photoelectrique dans la Galaxie. I, II, II, IV, V.; 1959AnTou..27...47B
873: Oja T.; (1966) Ark. Astron. 4, 199; A photometric study of a region in Cassiopeia; 1966ArA.....4..199O
876: Haggkvist L., Oja T.; (1968) Ark. Astron. 5, 125; Photoelectric BV photometry of 368 Northern stars; 1968ArA.....5..125H
1221: Szabados L.; (1977) Mitt. Sternw. Ungar. Akad. Budapest No 70; Photoelectric photometry of northern cepheids I.
1341: Hoag A.A., Johnson H.L., Iriarte B., Mitchell R.I., Hallam K.L., Sharpless S.; (1961) Publ. US. Nav. Obs. 17, 343; Photometry of stars in galactic cluster fields; 1961PUSNO..17..343H
1462: Coyne G.V., Wisniewski W., Otten L.B.; (1978) Vatican Obs. Publ. 1, 257; A survey for H Alpha emission objects in the Milky Way. V. Perseus; 1978VatOP...1..257C