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V/86 Interstellar matter in the Galactic Disk (Guarinos J., 1992)
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Distribution of interstellar matter in the galactic disk from
visual extinction data
Guarinos J.
<Ph.D. Thesis, Strasbourg Observatory (1991)>
=1991PhDT.......160G
Distribution of interstellar matter in the galactic disk from
visual extinction data
<in "Astronomy from Large Databases II", Haguenau 14-16 September 1992,
Ed. A. Heck and F. Murtagh, ESO Conference and Workshop Proceedings No 43,
ISBN 3-923524-47-1, p. 301>
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ADC_Keywords: Extinction ; Colors ; Stars, distances
Keywords: stars: distances - stars: fundamental parameters -
dust, extinction - solar neighborhood - catalogs
Description:
This catalogue, developed for a new study of the interstellar
medium in the solar vicinity, contains estimations of extinction
and distances from reliable UBV data and MK types; special
attention was paid to the consistency between spectroscopic and
photometric data.
There are four sets of 2 files: the main set is named CEDDU
(Catalogue of Extinctions and Distances Derived from UBV data).
Appendices contain stars with discrepant results: negative
colour excesses (exneg), apparently very close stars with
heavy reddening (avlar), and apparently very far stars with
low reddening (asmal). For each set, one file contains a selection
of observational data along with derived and computed parameters,
and a second file contains the complete set of observational data.
Please refer to the enclosed file "intro" (plain ascii) or
"intro.tex" (LaTeX) for a more detailed description of the
catalogue and how it was built.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
intro 80 360 Description of the Catalogue
intro.tex 103 526 Description of the Catalogue (LaTeX)
ceddu1 132 15449 Catalogue of Extinctions and Distances
Derived from UBV data (parameters)
ceddu2 132 15449 Catalogue of Extinctions and Distances
Derived from UBV data (1)
asmal1 115 98 Stars with low reddening Small extinction (1)
asmal2 132 98 Stars with low reddening Small extinction (2)
avlar1 115 62 Stars with very Large Extinction (1)
avlar2 132 62 Stars with very Large Extinction (2)
exneg1 131 390 Stars with negative extinctions (1)
exneg2 132 390 Stars with negative extinctions (2)
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Note (1): selection of observational data along with derived and
computed parameters
Note (2): complete set of observational data
Byte-by-byte Description of file: ceddu1
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Bytes Format Units Label Explanations
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1- 12 A12 --- Star Identifier, either HD or BD/CD/CPD
14- 33 A20 --- MK The MK spectral type written in
a standard format
36 A1 --- r_MK [HJBSK] Source of MK (1)
39- 44 F6.3 mag Vmag Apparent magnitude in UBV system (2)
46- 51 F6.3 mag B-V Colour index in UBV system (2)
53- 58 F6.3 mag U-B ? Colour index in UBV system (3)
62- 66 F5.2 mag absVmag Absolute magnitude (section 3.3.2)
68- 71 A4 --- r_absVmag Source of absVmag (3)
75- 79 F5.2 mag (B-V)0 Intrincic colour
81- 84 A4 --- r_(B-V)0 Source of (B-V)0 (4)
87- 91 F5.2 mag Av Interstellar extinction (section 3.3.1)
94- 97 I4 pc HDist Heliocentric distance
99-103 I5 pc xDist X-component of distance vector
(Hdist*cos(b)*cos(l))
105-109 I5 pc yDist Y-component of distance vector
(Hdist*cos(b)*sin(l))
111-115 I5 pc zDist Z-component of distance vector
(Hdist*sin(b))
119-124 F6.2 deg GLON [0/360[+= Galactic longitude
126-131 F6.2 deg GLAT Galactic latitude
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Note (1): MK Type source takes the following values:
B: Third General Catalogue of MK Spectral Classification (Buscombe 1977).
H: Michigan Spectral Catalogue
(Houk & Cowley 1975; Houk 1978; Houk 1982; Houk & Smith-Moore 1988).
J: Catalogue of Selected Spectral Types in the MK System (M. Jaschek 1978).
K: Catalogue of Jensen (1983).
S: from SIMBAD for a very small number of stars.
Note (2): The value is the average of all the non-deviating measurements
provided by the Photoelectric Photometric Catalogue (Mermilliod 1987)
Note (3): Source of the table which provided the absolute magnitudes:
CGMK: Corbally and Garrison (1984)
GRMK: Grenier et al. (1985), table for magnitude-limited samples
SKMK: Schmidt-Kaler (1982) MK/Mv table
SKMQ: Schmidt-Kaler (1982) (B-V)o+Lum.Class/Mv table using the
photometric method exposed in section 3.3.1 (see
Garcia, Claria and Levato 1988)
Note (4): Method of determination of the intrinsic colour:
MQ: photometric method exposed in section 3.3.1 (see
Garcia, Claria and Levato 1988)
SK: from the MK/(B-V)o table from Schmidt-Kaler (1982)
SK-n: (n either 1 or 2) indicates that a correction of n sub-types
towards the blue has been performed on the spectral type,
before using the MK/(B-V)o table from Schmidt-Kaler (1982).
MQ-1: a correction of 1 sub-type towards the blue has been performed
on the spectral type, before using the MQ method
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Byte-by-byte Description of file: ceddu2, exneg2, avlar2, asmal2
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Bytes Format Units Label Explanations
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1- 12 A12 --- Star Identifier, either HD or BD/CD/CPD
14- 45 A32 --- MK The full MK spectral type including all
spectrum peculiarities written in
a standard format
46 A1 --- r_MK [HJBSK] Source of MK (see table ceddu1)
49- 50 I2 h RAh Right Ascension 2000 (hours)
52- 53 I2 min RAm Right Ascension 2000 (minutes)
55- 56 I2 s RAs Right Ascension 2000 (seconds)
57 A1 --- n_RAs [*] An '*' exists if RA was originally
expressed in tenths of minutes
59 A1 --- DE- Declination 2000 (sign)
60- 61 I2 deg DEd Declination 2000 (degrees)
63- 66 F4.1 arcmin DEm Declination 2000 (minutes)
69- 74 F6.2 deg GLON [0/360[+= Galactic longitude
76- 81 F6.2 deg GLAT Galactic latitude
83- 88 F6.3 mag Vmag Apparent V magnitude, as in table ceddu1
89- 91 I3 --- o_Vmag Number of measurements used to derive Vmag
93- 98 F6.3 mag e_Vmag Mean error (rms) of Vmag
100-105 F6.3 mag (B-V) Colour index, as in table ceddu1
106-108 I3 --- o_(B-V) Number of measurements used to derive (B-V)
110-115 F6.3 mag e_(B-V) Mean error (rms) of (B-V)
117-122 F6.3 mag (U-B) ? Colour index (3)
123-125 I3 --- o_(U-B) ? Number of observations used to derive (U-B)
127-132 F6.3 mag e_(U-B) ? Mean error (rms) of (U-B)
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Byte-by-byte Description of file: exneg1, avlar1, asmal1
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Bytes Format Units Label Explanations
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1- 12 A12 --- Star Identifier, either HD or BD/CD/CPD
14- 33 A20 --- MK The MK spectral type written in
a standard format
36 A1 --- r_MK [HJBSK] Source of MK, as in ceddu1 table
39- 44 F6.3 mag Vmag Apparent magnitude in UBV system
46- 51 F6.3 mag B-V Colour index in UBV system
53- 58 F6.3 mag U-B ? Colour index in UBV system
62- 66 F5.2 mag absVmag ? Absolute magnitude
68- 71 A4 --- r_absVmag Source of absVmag
75- 79 F5.2 mag (B-V)0 Intrincic colour
81- 84 A4 --- r_(B-V)0 Source of (B-V)0
87- 91 F5.2 mag E(B-V) Colour excess
93- 97 I5 pc HDist ? Heliocentric distance
98-103 I6 pc xDist ? X-component of distance vector
(Hdist*cos(b)*cos(l))
104-109 I6 pc yDist ? Y-component of distance vector
(Hdist*cos(b)*sin(l))
110-115 I6 pc zDist ? Z-component of distance vector
(Hdist*sin(b))
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References:
Buscombe W.: 1977, MK Spectral Classifications; Third General
Catalogue, Northwestern University, Evanston.
Corbally C.J., Garrison R.F.: 1984, in "The MK Process and Stellar
Classification". Proceedings of a workshop, Toronto (Canada),
June 1983. R.F. Garrison Ed., 277.
Garcia B., Claria J.J., Levato H.: 1988, Astrophys. Sp. Sci. 143, 317.
Grenier S., Gomez A.E., Jaschek C., Jaschek M., Heck A.: 1985,
Astron. Astrophys. 145, 331.
Houk N.: 1978, Michigan Catalogue of Two-Dimensional Spectral Types
for the HD Stars, Volume 2, University of Michigan, Ann Arbor, Michigan.
Houk N.: 1982, Michigan Catalogue of Two-Dimensional Spectral Types
for the HD Stars, Volume 3, University of Michigan, Ann Arbor, Michigan.
Houk N., Cowley A.P.: 1975, University of Michigan Catalogue of
Two-Dimensional Spectral Types for the HD Stars, Volume 1, University
of Michigan, Ann Arbor, Michigan.
Houk N., Smith-Moore M.: 1988, Michigan Catalogue of Two-Dimensional
Spectral Types for the HD Stars, Volume 4, University of Michigan,
Ann Arbor, Michigan.
Jaschek M.: 1978, Bull. Inform. CDS, 15, 121.
Jensen K.S.: 1983, Spectral Classifications in the MK System for
HD Stars in the 25-30deg zone (CDS Catalogue III/75A/)
Mermilliod J.-C.: 1987, Astron. Astrophys. Suppl. Ser. 71, 413.
Schmidt-Kaler T.: 1982, in Landolt-Boernstein, Vol. VI/2b,
K. Schaifers, H.H. Voigt Eds., Springer-Verlag. p. 1.
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(End) Jacques Guarinos, Francois Ochsenbein [CDS] 25-Feb-1995