III/40A Spectral Survey of Southern Milky Way (Loden+ 1976) ================================================================================ A Spectral Survey of the Southern Milky Way I. General Description and Catalogue I. l = 306deg to 318deg Sundman A., Loden L.O., Nordstroem B. =1974A&AS...16..445S II. O-B5 Stars. l = 237deg to 281deg Nordstroem B. =1975A&AS...21..193N III. O-B9 and M Stars. l = 280deg to 306deg Loden L.O., Loden K., Nordstroem B., Sundman A. =1976A&AS...23..283L ================================================================================ ADC_Keywords: Milky Way ; Surveys ; Spectral types Description: The spectral survey, carried out at the Stockholm Observatory, was initiated by B. Lindblad. The observational material was obtained by L.O. Loden, K. Loden and others in the years 1956-1965, when the Stockholm Observatory took part in a joint enterprise for using the Harvard-Boyden station. The Swedish Natural Science Research Council, the Royal Academy of the Sciences, and the K. and A. Wallenberg Foundation funded the observations, which are based on both direct and objective prism plates. The data were published in three parts, the first having less precise positions than the others. The coordinates for Catalogue I (3033) were later recomputed with the same reduction procedure as Catalogues II (3034) and III (3035), making the present catalogue uniform (Andersen, 1977). The files include star identification, finding chart identification, RA and Dec, galactic longitude and latitude, spectral type, blue magnitude, visual magnitude and remarks. The data concerning the part 2 were revised by Brian Skiff in November 1996 (see the "History" section below) File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file data1.dat 80 2969 Part I Sundman+ (1974A&AS...16..445S) data2.dat 74 562 Part II Nordstroem (1975A&AS...21..193N) n75.dat 80 562 Part II Revised by B. Skiff (see "History") data3.dat 74 9728 Part III Loden+ (1976A&AS...23..283L) notes.dat 80 43 Notes to n75.dat -------------------------------------------------------------------------------- Byte-by-byte Description of file: data?.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 2 I2 h RAh Right Ascension (1950.0) hours 4- 7 F4.1 min RAm Right Ascension (1950.0) minutes 9 A1 --- DE- Declination (1950.0) sign 10- 11 I2 deg DEd Declination (1950.0) degrees 13- 14 I2 arcmin DEm Declination (1950.0) arcminutes 15 A1 --- u_DEm Uncertainty flag for coordinates 17- 24 A8 --- ID Identification (HD, HDE or DM) 26- 27 I2 --- Chart [1/18]? Chart number (data2 only) 29- 33 I5 --- CatNum Catalogue number (reference to finding charts) 34 A1 --- m_CatNum [A] Catalogue number suffix 36- 40 F5.2 mag m(B) ? Blue magnitude 41 A1 --- u_m(B) Uncertainty flag for m(B) 43- 51 A9 --- Sp *Spectral type 53- 61 A9 --- Rem *Remarks 63- 68 F6.2 deg GLON Galactic longitude 70- 74 F5.2 deg GLAT Galactic latitude 76- 79 F4.1 mag Vmag ? Visual magnitude (data1 only) 80 A1 --- u_Vmag Uncertainty flag for Vmag -------------------------------------------------------------------------------- Note on Sp: Spectral type, left-justified. A colon following the spectral type (not aligned) indicates an uncertain spectral type or luminosity is given in rem Note on Rem: Remarks, left-justified. The following codes are used: O = overexposed U = underexposed ID = uncertain identification ST = photoelectric standard VAR(?) = Variable (possibly var.) E = emission K (?) = Interstellar K line (possibly) visible N (NN) = Diffuse (very diffuse) lines SB ? = possibly spectroscopic binary I - V = luminosity classes WD = probably white dwarf * = see special remark in printed catalogue -------------------------------------------------------------------------------- Byte-by-byte Description of file: n75.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 3 I3 --- [N75] [1/568]+ Running number 6- 7 I2 h RAh Right Ascension J2000 (hours) 9- 10 I2 min RAm Right Ascension J2000 (minutes) 12- 15 F4.1 s RAs Right Ascension J2000 (seconds) 17 A1 --- DE- Declination J2000 (sign) 18- 19 I2 deg DEd Declination J2000 (degrees) 21- 22 I2 arcmin DEm Declination J2000 (minutes) 24- 25 I2 arcsec DEs Declination J2000 (seconds) 27 A1 --- s [CGNPU] Source of position (1) 30- 41 A12 --- Name Identification of the star in DM and HD 43- 44 I2 --- Chart [1/18] Chart number 47- 51 F5.2 mag Bmag ? Blue magnitude 52 A1 --- u_Bmag Uncertainty flag on Bmag 54- 63 A10 -- SpType Spectral type 65 A1 --- Rem [*] an additional note exists in notes.dat 66- 80 A15 --- Note *Additional notes and identifications (2) -------------------------------------------------------------------------------- Note (1): the position sources are: C = Carlsberg Meridian Catalogues (, , , , ) G = GSC (Guide Star Catalogue) N = Nesterov (HDE stars, cat. ) P = PPM (catalogues , , ) U = USNO A0.9 catalogue Note (2): Nordstroem comment codes are: D = overlapped spectrum K = interstellar K line visible U = underexposed O = overexposed -------------------------------------------------------------------------------- Byte-by-byte Description of file: notes.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 3 I3 --- [N75] [1/568]+= Running number as in n75.dat 4 A1 --- Cont [a] Continuation symbol 6- 80 A75 --- Text Text of note -------------------------------------------------------------------------------- Acknowledgements: Thanks are due to Dr Johannes Andersen, who provided the data on magnetic tape to Dr Carlos Jaschek (CDS) as early as January 1977. The first version of this description file was done by Julie Anne Watko [SSDOO/ADC] in August 1996. History: * January 1976: the catalogues were originally prepared at Stockholm Observatory, and mailed on magnetic tapes to CDS, as 3 catalogs: III/33 (part I: 306-318{deg}), III/34 (part II: 237-281{deg}), and III/35 (part III: 280-306{deg}). * January 1977: the unified version (III/40) was mailed on magnetic tape to CDS director (C. Jaschek) by J. Andersen (Copenhagen Observatory) * November 1996: addition of the file n75.dat, a revision of data2.dat, was prepared by Brian Skiff . The positions, magnitudes, cross-identifications and notes have been improved as follows: - the GSC (Guide Star Catalogue version 1.1) was used to derive a position, by a comparison with the published charts; a few problem cases were checked against the digitized sky survey; positions were then improved with the PPM catalogues ( and ) - SIMBAD was searched around each position for cross-identifications (resulting also in SIMBAD fixes). The printed versions from Goddard of Durchmusterungen CoD and CPD were then searched for additional IDs by comparing positions and charts. - the Mermilliod's Lausanne photometric database was used to improve the B magnitudes. - the comments have been added. References: I. Sundman A., Loden L.O. & Nordstroem B. 1974, Astron. Astrophys. Suppl. 16, 455. ADC Cat 3033 (1974A&AS...16..445S) II. Nordstroem B. 1975, Astron. Astrophys. Suppl. 21, 193. ADC Cat 3034. (1975A&AS...21..193N) III. Loden L.O., Loden K., Nordstroem B. & Sundman A. 1976 Astron. Astrophys. Suppl. 23, 283. ADC Cat 3035. (1976A&AS...23..283L) Andersen J. 1977, A Uniform Edition of the Stockholm Southern Milky Way Survey, Astron. Astrophys. Suppl. 29, 257. (1977A&AS...29..257A) ================================================================================ (End) Francois Ochsenbein [CDS], Brian Skiff [Lowell Obs.] 26-Nov-1996