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V/86             Interstellar matter in the Galactic Disk    (Guarinos J., 1992)

Distribution of interstellar matter in the galactic disk from visual extinction data GUARINOS J. <Ph.D. Thesis, Strasbourg Observatory (1992)> <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>
ADC_Keywords: Extinction ; Colors ; Stars, distances Keywords: stars: distances - stars: fundamental parameters - dust: extinction - solar neighbourhood - 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:
FileName Lrecl Records Explanations
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)
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
Bytes Format Units Label Explanations
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
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
Byte-by-byte Description of file: ceddu2 exneg2 avlar2 asmal2
Bytes Format Units Label Explanations
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 B2000 (hours) 52- 53 I2 min RAm Right Ascension B2000 (minutes) 55- 56 I2 s RAs Right Ascension B2000 (seconds) 57 A1 --- n_RAs [*] An '*' exists if RA was originally expressed in tenths of minutes 59 A1 --- DE- Declination B2000 (sign) 60- 61 I2 deg DEd Declination B2000 (degrees) 63- 66 F4.1 arcmin DEm Declination B2000 (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)
Byte-by-byte Description of file: exneg1 avlar1 asmal1
Bytes Format Units Label Explanations
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))
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.
(End) Jacques Guarinos, Francois Ochsenbein [CDS] 25-Feb-1995
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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