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J/ApJ/684/1240 Prestellar cores in Perseus, Serpens and Ophiuchus (Enoch+, 2008)

The mass distribution and lifetime of prestellar cores in Perseus, Serpens, and Ophiuchus. Enoch M.L., Evans II N.J., Sargent A.I., Glenn J., Rosolowsky E., Myers P. <Astrophys. J., 684, 1240-1259 (2008)> =2008ApJ...684.1240E
ADC_Keywords: Molecular clouds ; Interstellar medium ; Millimetric/submm sources Keywords: infrared: ISM - ISM: clouds - ISM: individual (Ophiuchus, Perseus, Serpens) - stars: formation - submillimeter Abstract: We present an unbiased census of starless cores in Perseus, Serpens, and Ophiuchus, assembled by comparing large-scale Bolocam 1.1mm continuum emission maps with Spitzer c2d surveys. We use the c2d catalogs to separate 108 starless from 92 protostellar cores in the 1.1mm core samples from Enoch and Young and their coworkers. A comparison of these populations reveals the initial conditions of the starless cores. Description: Utilizing large-scale 1.1mm surveys (Paper I-III: Enoch et al. 2006, Cat. J/ApJ/638/293; Young et al. 2006ApJ...644..326Y; Enoch et al. 2007ApJ...666..982E) together with Spitzer IRAC and MIPS maps from the c2d Legacy program (Evans et al. 2003PASP..115..965E), we have carried out an unbiased census of prestellar and protostellar cores in the Perseus, Serpens, and Ophiuchus molecular clouds. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 71 108 Starless cores in Perseus, Serpens, and Ophiuchus table2.dat 71 92 Protostellar cores in Perseus, Serpens, and Ophiuchus table4.dat 35 70 Dynamical properties of Perseus cores
See also: J/ApJS/181/321 : Properties of Spitzer c2d dark clouds (Evans+, 2009) J/A+A/487/993 : MAMBO Mapping of c2d Clouds and Cores (Kauffmann+, 2008) J/ApJS/175/509 : Ammonia spectral atlas in Perseus (Rosolowsky+, 2008) J/ApJ/663/1149 : Spitzer survey of Serpens YSO population (Harvey+, 2007) J/ApJ/668/1042 : Dense cores in Perseus molecular cloud (Kirk+, 2007) J/ApJ/669/493 : Spitzer/Chandra YSOs in Serpens cloud core (Winston+, 2007) J/ApJ/638/293 : 1.1mm sources in the Perseus Molecular Cloud (Enoch+, 2006) Byte-by-byte Description of file: table[12].dat
Bytes Format Units Label Explanations
1- 9 A9 --- Cloud Molecular cloud name 11- 13 A3 --- Cld Cloud (constellation) name: Per, Ser or Oph 14- 18 A5 --- --- [Bolo-] 20- 22 I3 --- ID Bolocam identification number in Cld (G1) (1) 24- 25 I2 h RAh Hour of Right Ascension (J2000) 27- 28 I2 min RAm Minute of Right Ascension (J2000) 30- 33 F4.1 s RAs Second of Right Ascension (J2000) 35 A1 --- DE- Sign of the Declination (J2000) 36- 37 I2 deg DEd Degree of Declination (J2000) 39- 40 I2 arcmin DEm Arcminute of Declination (J2000) 42- 43 I2 arcsec DEs Arcsecond of Declination (J2000) 45- 48 I4 mJy Sp Peak flux at 1.1mm in units of mJy/beam 50- 54 F5.2 solMass TMass Total mass (2) 56- 60 F5.1 arcsec theta ? Deconvolved angular FWHM size (3) 62- 64 F3.1 --- a/b [1,3] Core axis ratio (3) 66- 71 E6.2 cm-3 <n> Mean density (4)
Note (1): Note that the Ophiuchus identifications are different than Tables 1 and 2 of Paper II (Young et al. 2006ApJ...644..326Y, <[YEE2006] NN> in Simbad) for Oph-Bolo 35 and above due to an adjustment of the source list, resulting in 43 rather than 44 sources (IDs are shifted by -1 for Oph-Bolo 35 and up). The peak flux, total mass, sizes, etc. for Oph-Bolo 35 and Oph-Bolo 36 are also different than in Paper II. Note (2): Calculated from the total flux at 1.1mm, assuming TD=10K. Note (3): Derived from an elliptical gaussian fit, deconvolved by the 31" beam. Note (4): Calculated in a fixed linear aperture of diameter 1E4 AU for each source.
Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 8 A8 --- --- [Per-Bolo] 10- 12 I3 --- ID Bolocam identification from Papers I-III (G1) 14- 17 F4.1 K Temp Kinetic temperature (2) 19- 22 F4.1 10+3.AU Rad Effective radius 24- 27 F4.2 km/s sigH2 Linewidth (1) 29- 31 F3.1 solMass Mdust Dust mass (2) 33- 35 F3.1 solMass Mvir Virial mass of the core (3)
Note (1): Derived from the NH3 observations of Perseus cores completed by Rosolowsky et al. (2008, Cat. J/ApJS/175/509; <[RPF2008] NH3SRC NNN> in Simbad). Note (2): Calculated from the total 1.1mm flux (Tables 1 and 2). Note (3): Calculated according to Eq. 5: Mvir=(5σ2H2R)/aG, where a accounts for the central concentration of the core, R is the radius of the core, and σH2 is the line width of the molecular gas inferred from the ammonia line width. The effective radius is estimated as the deconvolved HWHM of the 1.1mm identified core.
Global Notes: Note (G1): Identifications as follows: Per-Bolo = <[EYG2006] Bolo NNN> in Simbad (Enoch et al. 2006, Cat. J/ApJ/638/293, Paper I), Oph-Bolo = <[YEE2006] Bolo NN> in Simbad (Young et al., 2006ApJ...644..326Y, Paper II); NN+1 for 35 and up (see Note (1) of tables 1 and 2). Ser-Bolo = <[EGE2007] Bolo NN> in Simbad (Enoch et al., 2007ApJ...666..982E, Paper III),
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 10-Dec-2010
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