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Table 6

Characteristics of starless (or Class 0) sources extracted with Gaussclumps in the 870 μm continuum map of Cha I filtered up to scale 5.

Name Ngcla FWHMb FWHMb Rab Npeakc AVd Mpeake Mtote M50″e CM f npeakg n50″g cnh
(″ × ″) (1000 AU)2 (1021 cm-2) (mag) (M⊙) (M⊙) (M⊙) (%) (105 cm-3) (104 cm-3)
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) (14)
Cha1-C1 4 55.1  ×  49.3 7.6  ×  6.7 1.1 92 14 0.56 3.36 1.44 39( 1) 49.5 97.7 5.1(0.1)
Cha1-C2 6 98.2  ×  45.9 14.4  ×  6.1 2.4 27 9 0.16 1.62 0.58 28( 1) 14.4 39.4 3.7(0.2)
Cha1-C3 8 76.1  ×  45.9 11.0  ×  6.1 1.8 25 13 0.15 1.16 0.45 33( 2) 13.3 30.7 4.3(0.2)
Cha1-C4 9 53.4  ×  50.4 7.3  ×  6.9 1.1 18 17 0.11 0.66 0.29 38( 3) 9.8 19.9 4.9(0.3)
Cha1-C5 11 60.3  ×  34.5 8.5  ×  4.1 2.1 15 9 0.088 0.41 0.32 28( 2) 7.9 21.4 3.7(0.3)
Cha1-C6 13 44.3  ×  26.0 5.8  ×  2.2 2.6 14 8 0.085 0.22 0.33 26( 2) 7.6 22.3 3.4(0.3)
Cha1-C7 14 98.3  ×  48.1 14.4  ×  6.5 2.2 13 11 0.078 0.82 0.23 34( 3) 6.9 15.4 4.5(0.4)
Cha1-C8 15 31.0  ×  26.1 3.4  ×  2.3 1.5 13 14 0.081 0.15 0.22 36( 3) 7.2 15.2 4.8(0.4)
Cha1-C9 16 82.6  ×  51.8 12.0  ×  7.1 1.7 12 7 0.071 0.68 0.20 36( 4) 6.3 13.4 4.7(0.5)
Cha1-C10 21 65.9  ×  34.3 9.4  ×  4.0 2.3 10 9 0.061 0.31 0.19 33( 4) 5.5 12.8 4.3(0.5)
Cha1-C11 23 126.7  ×  45.8 18.7  ×  6.1 3.1 9.7 9 0.059 0.76 0.16 36( 5) 5.2 11.1 4.7(0.6)
Cha1-C12 24 56.3  ×  32.7 7.8  ×  3.7 2.1 9.7 10 0.059 0.24 0.14 42( 5) 5.2 9.6 5.5(0.7)
Cha1-C13 25 69.4  ×  63.7 9.9  ×  9.0 1.1 9.1 9 0.055 0.54 0.16 35( 5) 4.9 10.5 4.7(0.6)
Cha1-C14 26 49.8  ×  33.6 6.8  ×  3.9 1.7 9.5 13 0.057 0.21 0.17 34( 4) 5.1 11.6 4.4(0.6)
Cha1-C15 29 102.4  ×  48.6 15.0  ×  6.6 2.3 7.9 8 0.048 0.53 0.13 37( 6) 4.2 8.8 4.8(0.8)
Cha1-C16 30 47.4  ×  41.7 6.4  ×  5.4 1.2 7.8 10 0.047 0.21 0.11 44( 7) 4.2 7.3 5.8(1.0)
Cha1-C17 32 67.3  ×  42.4 9.6  ×  5.5 1.7 7.7 11 0.046 0.29 0.11 41( 7) 4.1 7.7 5.3(0.9)
Cha1-C18 33 102.1  ×  47.7 15.0  ×  6.4 2.3 7.5 13 0.045 0.49 0.12 38( 6) 4.0 8.0 5.0(0.8)
Cha1-C19 34 76.3  ×  37.5 11.0  ×  4.6 2.4 7.3 14 0.044 0.28 0.098 45( 8) 3.9 6.7 5.9(1.1)
Cha1-C20 35 73.5  ×  39.9 10.6  ×  5.1 2.1 6.8 5.2 0.041 0.27 0.095 43( 8) 3.7 6.5 5.7(1.1)
Cha1-C21 36 37.4  ×  29.0 4.6  ×  3.0 1.6 7.1 19 0.043 0.10 0.11 38( 7) 3.8 7.7 5.0(0.9)
Cha1-C22 37 90.7  ×  64.3 13.2  ×  9.1 1.5 6.9 9 0.041 0.54 0.12 35( 6) 3.7 8.1 4.5(0.8)
Cha1-C23 38 40.5  ×  37.0 5.2  ×  4.5 1.1 6.9 10 0.042 0.14 0.087 48( 9) 3.7 5.9 6.3(1.2)
Cha1-C24 39 50.3  ×  35.8 6.8  ×  4.3 1.6 6.7 14 0.041 0.16 0.081 50(10) 3.6 5.5 6.6(1.3)
Cha1-C25 40 51.4  ×  37.2 7.0  ×  4.6 1.5 7.1 8 0.043 0.18 0.12 35( 6) 3.8 8.3 4.6(0.8)
Cha1-C26 41 111.5  ×  43.7 16.4  ×  5.7 2.9 6.7 7 0.041 0.44 0.10 40( 8) 3.6 6.9 5.3(1.0)
Cha1-C27 42 61.1  ×  36.7 8.6  ×  4.5 1.9 7.0 8 0.042 0.21 0.13 32( 5) 3.8 9.1 4.1(0.7)
Cha1-C28 43 59.6  ×  32.1 8.4  ×  3.6 2.3 6.6 8 0.040 0.17 0.087 46( 9) 3.5 5.9 6.0(1.2)
Cha1-C29 44 49.3  ×  36.1 6.7  ×  4.4 1.5 7.1 9 0.043 0.17 0.13 33( 6) 3.8 8.8 4.3(0.7)
Cha1-C30 45 105.2  ×  51.2 15.5  ×  7.0 2.2 6.3 7 0.038 0.46 0.099 39( 8) 3.4 6.7 5.1(1.0)
Cha1-C31 46 71.6  ×  44.6 10.3  ×  5.9 1.7 6.5 5.7 0.039 0.28 0.10 39( 7) 3.5 6.9 5.1(1.0)
Cha1-C32 47 91.5  ×  49.5 13.3  ×  6.7 2.0 6.5 11 0.039 0.40 0.10 38( 7) 3.5 7.1 4.9(0.9)
Cha1-C33 49 58.2  ×  36.0 8.1  ×  4.4 1.9 6.5 8 0.039 0.18 0.10 38( 7) 3.5 7.0 5.0(1.0)
Cha1-C34 50 139.3  ×  42.7 20.7  ×  5.6 3.7 6.3 5.5 0.038 0.50 0.10 37( 7) 3.4 6.9 4.9(1.0)
Cha1-C35 52 55.8  ×  26.6 7.7  ×  2.4 3.2 6.2 13 0.038 0.12 0.076 49(11) 3.4 5.2 6.5(1.4)
Cha1-C36 53 49.1  ×  33.7 6.6  ×  3.9 1.7 6.5 9 0.039 0.14 0.092 42( 8) 3.5 6.3 5.5(1.1)
Cha1-C37 54 77.6  ×  30.1 11.2  ×  3.2 3.5 6.1 7 0.037 0.19 0.091 41( 8) 3.3 6.2 5.4(1.1)
Cha1-C38 55 83.4  ×  44.6 12.1  ×  5.9 2.1 6.2 11 0.038 0.31 0.097 39( 8) 3.3 6.6 5.1(1.0)
Cha1-C39 56 82.3  ×  35.8 11.9  ×  4.3 2.8 6.0 6 0.036 0.24 0.098 37( 8) 3.2 6.7 4.8(1.0)
Cha1-C40 57 58.7  ×  46.6 8.2  ×  6.2 1.3 6.1 12 0.037 0.23 0.095 39( 8) 3.3 6.4 5.1(1.0)
Cha1-C41 58 48.3  ×  31.9 6.5  ×  3.6 1.8 6.1 12 0.037 0.13 0.083 45(10) 3.3 5.6 5.9(1.3)
Cha1-C42 59 48.7  ×  26.0 6.6  ×  2.3 2.9 6.0 8 0.036 0.10 0.064 57(14) 3.2 4.3 7.4(1.8)
Cha1-C43 60 90.0  ×  45.6 13.1  ×  6.0 2.2 5.7 9 0.035 0.32 0.084 41( 9) 3.1 5.7 5.4(1.2)
Cha1-C44 61 46.5  ×  42.4 6.2  ×  5.5 1.1 5.8 5.9 0.035 0.15 0.074 48(11) 3.1 5.0 6.3(1.4)
Cha1-C45 64 73.2  ×  21.4 10.5  ×  2.1 5.0 5.7 5.1 0.035 0.12 0.074 47(11) 3.1 5.0 6.1(1.4)
Cha1-C46 65 36.6  ×  21.2 4.5  ×  2.1 2.1 5.7 7 0.034 0.059 0.051 67(19) 3.0 3.5 8.8(2.4)
Cha1-C47 67 87.6  ×  36.2 12.8  ×  4.4 2.9 5.7 9 0.034 0.24 0.090 38( 8) 3.1 6.1 5.0(1.1)
Cha1-C48 68 50.7  ×  24.0 6.9  ×  2.1 3.3 5.5 7 0.033 0.090 0.059 56(15) 2.9 4.0 7.4(1.9)
Cha1-C49 70 40.2  ×  26.9 5.1  ×  2.5 2.1 5.6 9 0.034 0.082 0.072 47(11) 3.0 4.9 6.2(1.5)
Cha1-C50 71 60.6  ×  54.3 8.5  ×  7.5 1.1 5.5 12 0.033 0.24 0.086 39( 9) 2.9 5.8 5.1(1.2)
Cha1-C51 72 34.9  ×  31.9 4.2  ×  3.6 1.2 5.6 14 0.034 0.084 0.065 52(13) 3.0 4.4 6.8(1.7)
Cha1-C52 73 50.5  ×  27.8 6.9  ×  2.7 2.6 5.3 17 0.032 0.100 0.065 49(13) 2.9 4.4 6.5(1.7)
Cha1-C53 74 52.8  ×  40.1 7.2  ×  5.1 1.4 5.5 6 0.033 0.16 0.084 40( 9) 2.9 5.7 5.2(1.2)
Cha1-C54 78 36.6  ×  29.9 4.5  ×  3.2 1.4 5.2 17 0.032 0.077 0.060 53(14) 2.8 4.1 6.9(1.8)
Cha1-C55 79 40.7  ×  28.8 5.2  ×  2.9 1.8 5.3 10 0.032 0.084 0.077 42(10) 2.9 5.2 5.5(1.3)
Cha1-C56 80 46.3  ×  22.4 6.2  ×  2.1 2.9 5.2 9 0.031 0.073 0.056 57(16) 2.8 3.8 7.4(2.1)
Cha1-C57 81 51.1  ×  40.1 7.0  ×  5.1 1.4 5.4 7 0.032 0.15 0.12 27( 6) 2.9 8.1 3.6(0.8)
Cha1-C58 82 48.5  ×  31.6 6.5  ×  3.5 1.9 5.5 11 0.033 0.11 0.088 38( 9) 3.0 6.0 5.0(1.1)
Cha1-C59 83 41.0  ×  21.4 5.3  ×  2.1 2.5 5.3 14 0.032 0.063 0.052 61(17) 2.9 3.5 8.0(2.3)
Cha1-C60 84 61.6  ×  43.7 8.7  ×  5.7 1.5 5.1 9 0.031 0.18 0.071 43(11) 2.8 4.8 5.7(1.4)

Notes. 

(a)

Numbering of Gaussclumps sources like in Table 2.

(b)

Size of the fitted Gaussian, deconvolved physical source size, and aspect ratio. Sizes smaller than 25.4″ were set to 25.4″ to compute the deconvolved sizes, in order to account for a fit inaccuracy corresponding to a 5σ detection in peak flux density. As a result, the minimum size that can be measured is about 2100 AU. The aspect ratio is the ratio of the deconvolved sizes along the major and minor axes.

(c)

Peak H2 column density computed assuming a dust opacity of 0.01 cm2 g-1. The statistical rms uncertainty is 1.1 × 1021 cm-2.

(d)

Visual extinction derived from 2MASS.

(e)

Mass in the central beam (HPBW = 21.2″), total mass derived from the Gaussian fit, and mass computed from the flux measured in an aperture of 50″ in diameter. The statistical rms uncertainties of Mpeak and M50″ are 0.006 and 0.011 M⊙, respectively.

(f)

Mass concentration mpeak / m50″. The statistical rms uncertainty is given in parentheses.

(g)

Beam-averaged free-particle density within the central beam and mean free-particle density computed for the mass M50″ in the aperture of diameter 50″. The statistical rms uncertainties are 5.6 × 104 and 7.2 × 103 cm-3, respectively.

(h)

Density contrast npeak / n50″. The statistical rms uncertainty is given in parentheses.

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