J/A+A/453/923 Morphologies in the Cepheus Flare region (Kiss+, 2006)
Star formation in the Cepheus Flare region - Implications from morphology
and infrared properties of optically selected clouds.
Kiss Z.T., Toth L.V., Krause O., Kun M, Stickel M.
<Astron. Astrophys. 453, 923 (2006)>
=2006A&A...453..923K 2006A&A...453..923K
ADC_Keywords: Molecular clouds ; Interstellar medium ; Extinction ;
Morphology
Keywords: ISM: clouds - dust, extinction - ISM: structure - stars: formation -
Galaxy: solar neighbourhood - infrared: ISM
Abstract:
These tables contain the data of the cloud sample on which the study
of the relationships between cloud morphology, optical and IR
properties, and star formation is based. The sample was defined using
the extinction map of the Cepheus Flare region covering ∼256 square
degrees created from the B band star counts of the USNO-A2.0
catalogue (Cat. I/252) with a typical resolution of 3 arcminutes on
a 1.5 arcminute grid. Cloud definition and description was carried out
using automatized methods. The main table lists the positions, peak
extinctions, sizes, morphological parameters and classes, distances,
mass estimations, parent cloud complexes, and the number of YSO
candidates associated. An additional table with the names of the
previously catalogued associated clouds and their references is also
available.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea1.dat 119 208 Main table
tablea2.dat 269 208 Table of associated clouds
notes.dat 82 25 References for Simbad names
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See also:
I/252 : The USNO-A2.0 Catalogue (Monet+ 1998)
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Seq Sequential number of cloud
5- 15 A11 --- Name Name of the cloud
17- 22 F6.2 deg GLON Galactic longitude
24- 29 F6.2 deg GLAT Galactic latitude
31- 33 F3.1 mag AVU Peak extinction from optical (USNO) data
35- 38 F4.1 mag AV2M Peak extinction from NIR (2MASS) data
40- 43 F4.1 K TDC ? Minimum 100-170um dust colour temperature
45- 48 F4.1 arcmin aa Apparent length of major axis
50- 53 F4.1 pc al Linear length of major axis
55- 57 F3.1 --- b/a Apparent axis ratio
59- 61 I3 deg PA *Position angle
63- 66 F4.1 arcmin Dp Peak displacement (distance to cloud center)
68- 70 I3 deg DPA *Displacement direction angle
72- 75 F4.2 --- Sym *Symmetry parameter
77- 80 F4.2 --- Sep *Separateness parameter
82- 85 F4.2 --- Irr *Irregularity parameter
87- 90 A4 --- Class *Morphlogical class
92- 94 I3 pc D1 *Distance of the first component
96- 98 I3 pc D2 *? Distance of the second component
100-102 I3 pc D3 *? Distance of the third component
104-107 I4 solMass Mass Mass from extinction
109-114 A6 --- Ncmpl *Complex name
116-117 I2 --- NYSO *? Number of YSO candidates associated
119 A1 --- Loop *[L] Loop flag
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Note on PA:
In the range of 0-180 deg ccw from the direction of the
northern galactic pole.
Note on DPA:
In the range of 0-180 deg ccw from the direction of the major axis.
Note on Sym:
The ratio of the sums of extinction in the
two halves of the cloud separated by the minor axis
Note on Sep:
Ratio of the sum of extinction in the defined ellipse, to
the sum of extinction in the elliptical ring between this ellipse
and that enlarged by a factor of 1.41.
Note on Irr:
Ratio of the cloud area inside the boundaries, but outside the
ellipse defined, to the total area of the cloud.
Note on Class:
Morphological classes: head-tail (h-t), globular (glob)
Note on D1, D2, D3:
Adopted distance values as follows:
177 = 200±20pc, Kun, 1998, Cat. J/ApJS/115/59
265 = 288±25pc, Straizys, 1992BaltA...1..149S 1992BaltA...1..149S
277 = 300±30pc, Kun, 1998, Cat. J/ApJS/115/59
302 = 325±13pc, Straizys, 1992BaltA...1..149S 1992BaltA...1..149S
377 = 400±80pc, Racine, 1968AJ.....73..233R 1968AJ.....73..233R
427 = 450±100pc, Kun, 1998, Cat. J/ApJS/115/59
627 = 650±70pc, Racine,1968AJ.....73..233R 1968AJ.....73..233R
877 = 900±100pc, Kun, 1998, Cat. J/ApJS/115/59
Note on Ncmpl:
Complexes are also defined in the paper.
Note on NYSO:
Young IRAS sources, H alpha stars, and T Tauri like 2MASS sources
were considered.
Note on Loop:
Clouds marked with L are situated on the shell of an infrared loop of
Kiss et al. (2004, Cat. J/A+A/418/131).
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Byte-by-byte Description of file: tablea2.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Seq Sequential number of cloud
5- 15 A11 --- Name Name of the cloud
17- 22 F6.2 deg GLON Galactic longitude
24- 29 F6.2 deg GLAT Galactic latitude
31-269 A239 --- List List of associated cloud names (1)
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Note (1): The references are in notes.dat file.
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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- 10 A10 --- Name Simbad acronym
12- 30 A19 --- BibCode BibCode
32- 55 A24 --- Aut Author's name
62- 82 A21 --- Com Comments
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Nomenclature note:
In the abstract of the paper, object GIRL G109+11 corresponds to
GIRL G109+10 in Kiss et al., 2004, Cat. J/A+A/418/131.
Acknowledgements: Zoltan Kiss, kissz(at)alcyone.bajaobs.hu
(End) Zoltan Tamas Kiss [Baja Astron. Obs.], Patricia Vannier [CDS] 07-Apr-2006