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- Extrait de Lynds' Catalogue of Bright Nebulae (Lynds 1965)
-
- Organisation du catalogue :
-
- Les nΘbuleuses sont rΘparties dans 50 zones de 30x30 degrΘs selon le mΩme
- principe que les grandes rΘgions du Guide Star Catalog .
- ( Voir Jenkner et al. The Astronomical Journal vol 99, num 6 June 1990 p.2087)
-
- dΘclinaison nombre numΘro de la
- du centre de zones premiΦre zone
- ------------- ------------ --------------
- 15 12 1
- 45 9 13
- 75 4 22
- -15 12 26
- -45 9 38
- -75 4 47
-
- Chaque zone est matΘrialisΘe par un fichier .
-
- Description des enregistrements des fichiers :
-
- LBNrec = record ar,de :longint ;
- area : single;
- num,d1,d2,id : word;
- color,bright : byte;
- name : array[1..8] of char;
- end;
-
- - ar : ascention droite 2000 en degrΘs * 100'000
- - de : declinaison 2000 * 100'000
- - area : surface de la nΘbuleuse en degrΘs carrΘ
- - num : numΘro de sequence
- - d1 : plus grande dimension en minutes
- - d2 : plus petite dimension en minutes
- - id : identification de la rΘgion
- - color : indice de couleur
- - bright: indice de luminositΘ
- - name : nom
-
- Type Intervalle Format
- ------------ -------------------------- -------------------
- Shortint -128 .. 127 SignΘ, 8 bits
- SmallInt -32768 .. 32767 SignΘ, 16 bits
- Longint -2147483648 .. 2147483647 SignΘ, 32 bits
- Byte 0 .. 255 Non signΘ, 8 bits
- Word 0 .. 65535 Non signΘ, 16 bits
-
- Chiffres Taille en
- Type PortΘe significatifs octets
- -------- ----------------------------- ------------- ------
- Real 2.9 * 10-39 .. 1.7 * 1038 11-12 6
- Single 1.5 * 10-45 .. 3.4 * 1038 7-8 4
- Double 5.0 * 10-324 .. 1.7 * 10308 15-16 8
- Extended 3.4 * 10-4932 .. 1.1 * 104932 19-20 10
-
-
-
- Description originale du catalogue :
-
- VII/9 Lynds' Catalogue of Bright Nebulae (Lynds 1965)
- ================================================================================
- Catalogue of bright nebulae
- Lynds B.T.
- <Astrophys. J. Suppl. Ser. 12, 163 (1965)>
- =1965ApJS...12..163L
- ================================================================================
- ADC_Keywords: Nebulae ; H II regions
-
- Description:
- The Catalogue of Bright Nebulae lists the galactic and equatorial
- coordinates of the center of the cloud, the dimensions of the nebulae
- as measured on the photograph on which it appeared at its brightest,
- the area of nebulosity in square degrees, color as compared between
- the blue and red Palomar plates, a brightness index on a scale of 6,
- an identification number that indicates the complexity of the
- nebulosity, and a cross reference to NGC (Cat. <VII.1>), Index
- Catalogue (IC), Sharpless (1959) Catalogue of HII Regions (Cat.
- <VII/20>), Cederblad (1956) Catalogue of Diffuse Galactic Nebulae,
- and Dorschner and Gurtler (1963).
-
- File Summary:
- --------------------------------------------------------------------------------
- FileName Lrecl Records Explanations
- --------------------------------------------------------------------------------
- ReadMe 80 . This file
- catalog.dat 68 1125 The LBN Catalogue
- --------------------------------------------------------------------------------
-
- Byte-by-byte Description of file: catalog.dat
- --------------------------------------------------------------------------------
- Bytes Format Units Label Explanations
- --------------------------------------------------------------------------------
- 2- 5 I4 --- Seq [1/1125]+ Running number (1)
- 7- 12 F6.2 deg GLON [0/360[+= Galactic longitude of cloud center
- 14- 19 F6.2 deg GLAT Galactic longitude of the cloud center
- 21- 22 I2 h RAh Hours RA, 1950.0
- 24- 25 I2 min RAm Minutes RA, 1950.0
- 28 A1 --- DE- Sign Dec, 1950.0
- 29- 30 I2 deg DEd Degrees Dec, 1950.0
- 32- 33 I2 arcmin DEm Minutes Dec, 1950.0
- 36- 39 I4 arcmin Diam1 Largest dimension of nebula
- 41- 43 I3 arcmin Diam2 Smallest dimension of nebula
- 45- 51 F7.3 deg2 Area Area of nebulosity
- 53 I1 --- Color [1/4] Color index (2)
- 55 I1 --- Bright [1/6] Brightness scale (3)
- 57- 59 I3 --- ID Identification number (4)
- 61- 68 A8 --- Name Other name of nebulosity (5)
- --------------------------------------------------------------------------------
- Note (1): This number represents the sequence in the published paper;
- see also the History below.
- Note (2): The following codes are used for Color:
- '1' if brighter on blue Palomar plate;
- '2' if equal on red and blue Palomar plates;
- '3' if brighter on red Palomar plate;
- '4' if visible only on the red Palomar plate.
- This parameter is zero only for the two nebulae
- #191 (074.53-08.42 = NGC 6960) and #844 (189.13+02.97 = IC 443)
- Note (3): the brightness scale varies from '1' (brightest) to
- '6' (barely detectable).
- This parameter is zero only for the sane two nebulae
- #191 (074.53-08.42 = NGC 6960) and #844 (189.13+02.97 = IC 443)
- Note (4): ID indicates whether or not the object
- is an isolated region (=0)
- or a region of different brightness located in a more extensive
- complex of nebulosities.
- Note (5): Abbreviations are
- NGC = New General Catalogue (NGC, cat. <VII/1>)
- IC = Index Catalogue
- S = Sharpless HII Regions (Sh 2-), 1959, Cat. <VII/20>
- C = Catalogue of Diffuse Galactic Nebulae, Cederblad 1959,
- Medd. Lund Ser.2, No 119
- DG = Dorschner and Gurtler 1963, AN 287, 257
- --------------------------------------------------------------------------------
-
- History:
- * The catalogue is extracted (in June 1994) from the CD-ROM of NASA/ADC
- "Selected Astronomical Catalogs Vol. 1" with the following corrections:
- - #582 (118.25+04.84) (shifted column)
- - Nebulae with identical central positions where checked against
- the publication and reordered according to the published catalogue.
- The following galactic central positions refer to 2 or more
- nebulae:
- 007.03-02.26 008.44+36.18 011.54+36.11 014.12+00.06
- 020.36-01.27 021.10-00.60 078.21+02.48 084.28-01.32
- 084.81+03.88 085.58+04.24 112.16+00.23 118.25+04.84
- 123.88-01.93 166.39-23.63 169.24-00.94 184.36-28.85
- 189.78-13.76 194.69-15.60 204.44-00.56 204.60-13.66
- 206.39-01.87 206.90-16.56 208.69-02.51 243.16+00.32
- 353.76+17.61
- * The first "Seq" column, a number which is now found in the
- literature, was added at CDS in December 1996.
-
- References:
- Cederblad, S. 1956, Medd. Lund, Ser. 2, No. 119
- Sharpless, S. 1959, ApJS, 6, 257 (Catalog <VII/20>)
- Dorschner, J., and Gurtler, J. 1963, AN, 287, 257
- ================================================================================
- (End) Francois Ochsenbein [CDS] 16-Dec-1996
-
-