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J/ApJS/110/21 Molecular clouds in Cepheus and Cassiopeia (Yonekura+ 1997)
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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 (SIMBAD/NED BibCode)
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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{deg}<l<130{deg} and -10{deg}<b<20{deg}) with the velocity
coverage of -40<V_LSR_<+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 ^13^CO emission (>=1.8K.km/s=3{sigma}) is
detected at 1015 positions. On the basis of the ^13^CO data, 188
distinct ^13^CO clouds are identified whose total mass is
1.0x10^5^M_{sun}_. Physical properties of the ^13^CO clouds such as
molecular column densities, sizes, and masses are derived for each
cloud. Astronomical objects associated with the ^13^CO 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 ^13^CO 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 ^13^CO 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_(^13^CO)
54- 56 F3.1 km/s DV FWHM line width {DELTA}V(^13^CO)
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 ^13^CO line
measured at the peak positions of the
^13^CO clouds
74- 77 F4.1 10+21cm-2 N(H2) H_2_ 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 ^13^CO 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_, {delta}Vc and V_lsr_c)
Note (2): Peak positions of the ^13^CO clouds
Note (3): Sizes of the ^13^CO clouds measured at 1.8K.km/s contours in Fig.1
(3{sigma})
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 GLONmin Minimum galactic longitude
9- 11 I3 deg GLONmax Maximum galactic longitude
13- 14 I2 deg GLATmin Minimum galactic latitude
16- 17 I2 deg GLATmax Maximum galactic latitude
19- 21 I3 km/s Vmin Minimum V_LSR_
23- 25 I3 km/s Vmax Maximum V_LSR_
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.
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(End) James Marcout, Patricia Bauer [CDS] 04-May-1998