J/ApJS/110/21 Molecular clouds in Cepheus and Cassiopeia (Yonekura+ 1997)
Molecular clouds in Cepheus and Cassiopeia.
Yonekura Y., Dobashi K., Mizuno A., Ogawa H., Fukui Y.
<Astrophys. J. Suppl. Ser. 110, 21 (1997)>
=1997ApJS..110...21Y 1997ApJS..110...21Y (SIMBAD/NED BibCode)
ADC_Keywords: CO ; Interstellar medium
Keywords: ISM: clouds - ISM: molecules - ISM: structure - radio lines: ISM -
stars: formation - surveys
Abstract:
A large-scale ^13CO(J=1-0) survey for nearby molecular clouds was
performed toward the Cepheus and Cassiopeia regions
(100°<l<130° and -10°<b<20°) with the velocity
coverage of -40<VLSR<+20km/s by using the two 4m millimeter-wave
telescopes at Nagoya University. An area of 866 square degrees was
covered at an 8' grid spacing with a 2.7' beam, and 48750 positions
were observed. Significant 13CO emission (≥1.8K.km/s=3σ) is
detected at 1015 positions. On the basis of the 13CO data, 188
distinct 13CO clouds are identified whose total mass is
1.0x105M☉. Physical properties of the 13CO clouds such as
molecular column densities, sizes, and masses are derived for each
cloud. Astronomical objects associated with the 13CO clouds were
searched for in the literature: 10 H II regions, eight reflection
nebulae, 23 T Tauri type stars, 28 molecular outflows, and 125 IRAS
point sources selected as candidates for protostars are likely to be
associated with the 13CO clouds.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 107 206 A catalog of 13CO clouds
table2.dat 61 24 Characteristics of cloud groups
refs.dat 125 33 References
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- [YDM97]CO Sequential number
([YDM97] CO NNN in Simbad database)
4 A1 --- Note [bc] Note (1)
6- 15 A10 --- Cloud Cloud name
17- 22 F6.2 deg GLON Galactic longitude
24- 28 F5.2 deg GLAT Galactic latitude
30- 31 I2 h RAh Right ascension (1950) (2)
33- 34 I2 min RAm Right ascension (1950)
36- 39 F4.1 s RAs Right ascension (1950)
40 A1 --- DE- Declination sign
41- 42 I2 deg DEd Declination (1950) (2)
44- 45 I2 arcmin DEm Declination (1950)
47- 48 I2 arcsec DEs Declination (1950)
50- 52 F3.1 K TR* Temperature T*R(13CO)
54- 56 F3.1 km/s DV FWHM line width {DELTA}V(13CO)
58- 62 F5.1 km/s Vlsr LSR velocity
64- 67 F4.1 K.km/s IntI Integrated intensity
69- 72 F4.2 cm-2 tau Peak optical depth of the 13CO line
measured at the peak positions of the
13CO clouds
74- 77 F4.1 10+21cm-2 N(H2) H2 molecular column density at the peak
position
79- 81 I3 arcmin size1 Size (3)
82 A1 --- --- [x]
83- 85 I3 arcmin size2 Size (3)
87- 90 I4 pc Dist Adopted distance
91 A1 --- n_Dist [d] Note on Dist (4)
93- 96 I4 solMass Mcloud Molecular mass of the 13CO cloud
98-107 A10 --- r_Dist References to the adopted distances (5)
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Note (1): b and c indicates the second and third values of the
observed properties set (T*R, δVc and Vlsrc)
Note (2): Peak positions of the 13CO clouds
Note (3): Sizes of the 13CO clouds measured at 1.8K.km/s contours in Fig.1
(3σ)
Note (4): Distances of these clouds were decided by the first step
Note (5): The references are in the ref.dat file
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1 A1 --- Group [CDA] C: Close group D: Distant Group;
A: clouds in Perseus Arm
2- 3 I2 --- [YDM97]GCl Sequential number
([YDM97] GCl NN in Simbad database)
5- 7 I3 deg LONmin Minimum galactic longitude
9- 11 I3 deg LONmax Maximum galactic longitude
13- 14 I2 deg LATmin Minimum galactic latitude
16- 17 I2 deg LATmax Maximum galactic latitude
19- 21 I3 km/s Vmin Minimum VLSR
23- 25 I3 km/s Vmax Maximum VLSR
27- 30 I4 pc Dist Adopted distance of the subgroup
32- 36 I5 solMass Mass Total molecular mass of the subgroup
38- 39 I2 --- Ncloud Number of component clouds identified in S3.2.
41- 55 A15 --- AssObj Associated objects
57- 61 A5 --- r_Dist References for adopted distances in refs.dat
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Ref References number
4- 24 A21 --- Aut Author's name
28- 46 A19 --- BibCode Simbad bibcode
48-125 A78 --- Com Comment
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History: Prepared via OCR at CDS.
(End) James Marcout, Patricia Bauer [CDS] 04-May-1998