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III/40A Spectral Survey Southern Milky Way Uniform (Loden+ 1976)
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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.
<Astron. Astrophys. Suppl., 16, 445 (1974)>
=1974A&AS...16..445S
II. O-B5 Stars. l = 237deg to 281deg
Nordstroem B.
<Astron. Astrophys. Suppl., 21, 193 (1975)>
=1975A&AS...21..193N
III. O-B9 and M Stars. l = 280deg to 306deg
Loden L.O., Loden K., Nordstroem B., Sundman A.
<Astron. Astrophys. Suppl., 23, 283 (1976)>
=1976A&AS...23..283L
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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)
File Summary:
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FileName Lrecl Records Explanations
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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)
data3.dat 74 9728 Part III Loden+ (1976A&AS...23..283L)
n75.dat 80 562 Part II Revised by B. Skiff (see History)
notes.dat 80 43 Notes to n75.dat
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Byte-by-byte Description of file: data*.dat
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Bytes Format Units Label Explanations
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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
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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
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Byte-by-byte Description of file: n75.dat
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Bytes Format Units Label Explanations
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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 --- posSource *[CGNPU] Source of position
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 --- NoteFlag [*] an additional note exists in n75_n.dat
66- 80 A15 --- Note *Additional notes and identifications (2)
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Note on posSource: the position sources are:
C = Carlsberg Meridian Catalogues
(<I/147>, <I/170>, <I/189>, <I/205>, <I/213>)
G = GSC (Guide Star Catalogue) <I/220>
N = Nesterov (HDE stars, cat. <III/182>)
P = PPM (catalogues <I/146>, <I/193>, <I/208>)
U = USNO A0.9 catalogue
Note (2): Nordstrom comment codes are:
D = overlapped spectrum
K = interstellar K line visible
U = underexposed
O = overexposed
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Byte-by-byte Description of file: notes.dat
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Bytes Format Units Label Explanations
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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
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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:
* November 1996: addition of the file n75.dat, a revision of data2.dat,
was prepared by Brian Skiff <bas@lowell.edu>.
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 (<I/193> and <I/208>)
- SIMBAD was searched around each position for cross-identifications
(resulting also in SIMBAD fixes). The printed versions from Goddard
of Durchmusterungen CoD <I/114> and CPD <I/108> 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)
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(End) Francois Ochsenbein [CDS], Brian Skiff [Lowell Obs.] 26-Nov-1996