2001A&A...365..440M


C.D.S. - SIMBAD4 rel 1.7 - 2020.02.17CET19:25:44

2001A&A...365..440M - Astronomy and Astrophysics, volume 365, 440-464 (2001/1-3)

The circumstellar environment of low-mass protostars: A millimeter continuum mapping survey.

MOTTE F. and ANDRE P.

Abstract (from CDS):

We present a complete 1.3 mm continuum mapping survey of the embedded young stellar objects (YSOs) in the Taurus molecular cloud. We have also imaged several isolated Bok globules, as well as protostellar objects in the Perseus cluster. Our maps, taken with the IRAM 30 m telescope and the MPIfR bolometer arrays, are sensitive to the column density structure of the sources on spatial scales ranging from 1500-5000AU to >15000-50000AU. For the protostellar envelopes mapped in Taurus, the results are roughly consistent with the predictions of the self-similar inside-out collapse model of Shu and collaborators. The envelopes observed in Bok globules are also qualitatively consistent with these predictions, providing the effects of magnetic pressure are included in the model. By contrast, the envelopes of Class 0 protostars in Perseus have finite radii ≲10000AU and are a factor of 3 to 12 denser than is predicted by the standard model. In cluster-forming regions, individual protostellar collapse thus appears to be induced in compact condensations resembling more finite-sized Bonnor-Ebert condensations than singular isothermal spheres. Accordingly, the beginning of protostellar evolution is suggested to be more violent, with larger accretion rates, in protoclusters compared to regions of distributed star formation like Taurus. Follow-up line observations of the envelopes' velocity fields are required to confirm this suggestion. We also find that roughly half of the Class I infrared sources of Taurus are either at the very end of the main accretion phase or already in the pre-main sequence phase. These sources are surrounded by only remnant, finite-sized envelopes (Menv4200AU≲0.01M and Rout≲1500AU). Lastly, our 1.3 mm continuum images reveal the presence of new candidate pre-stellar condensations and/or Class 0 protostars in the close environment of 8 Taurus Class I YSOs, 2 Bok globules, and 3 Perseus protostars.

Abstract Copyright:

Journal keyword(s): stars: formation - stars: circumstellar matter - ISM: clouds - ISM: structure - ISM: dust

Simbad objects: 70

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Number of rows : 70

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 LDN 1448NW Y*? 03 25 35.66 +30 45 34.2           ~ 58 0
2 LDN 1448NA smm 03 25 36.49 +30 45 22.2           ~ 170 1
3 SSTc2d J032536.4+304522 Y*O 03 25 36.49 +30 45 22.2           ~ 185 1
4 IRAS 03225+3034 FIR 03 25 36.49 +30 45 22.2           ~ 149 1
5 [SDA2014] West4 Y*O 03 25 38.83 +30 44 06.2           ~ 242 1
6 NAME LDN 1448-mm Y*O 03 25 38.83 +30 44 06.2           ~ 298 0
7 IRAS 03258+3104 Y*O 03 28 55.30 +31 14 27.8           ~ 158 1
8 [JCC87] IRAS 2A Y*O 03 28 55.55 +31 14 36.7           ~ 380 3
9 BD+30 547 Y*O 03 28 57.2107612240 +31 14 19.076624755   10.73 9.98 9.1   G4V 93 1
10 [JCC87] IRAS 4A Y*O 03 29 10.49 +31 13 30.8           ~ 576 1
11 [JCC87] IRAS 4 FIR 03 29 10.9 +31 13 26           ~ 462 0
12 [JCC87] IRAS 4B Y*O 03 29 12.058 +31 13 02.05           ~ 548 0
13 IRAS 03282+3035 cor 03 31 20.98 +30 45 30.1           ~ 160 0
14 NAME Perseus Cloud SFR 03 35.0 +31 13           ~ 1025 0
15 NAME HH 211-mm Y*O 03 43 56.816 +32 00 50.06           ~ 53 1
16 IRAS 03445+3242 Y*O 03 47 41.603 +32 51 43.79           ~ 173 0
17 IRAS 04016+2610 Y*O 04 04 43.071 +26 18 56.39     20.45     ~ 230 0
18 LDN 1489 DNe 04 04 47.5 +26 19 42           ~ 192 0
19 LDN 1495N DNe 04 13 50.2 +28 12 32           ~ 9 0
20 IRAS 04113+2758 ** 04 14 26.31 +28 06 04.5           ~ 57 0
21 V* V892 Tau Ae* 04 18 40.6120892867 +28 19 15.641672501   16.6 14.69 14.35   A0Ve 259 1
22 IRAS 04158+2805 Y*O 04 18 58.1407377664 +28 12 23.347645825           M5.25 88 0
23 IRAS 04166+2706 Y*O 04 19 42.627 +27 13 38.43           M 109 1
24 IRAS 04169+2702 Y*O 04 19 58.449 +27 09 57.07           K0-M4 99 1
25 IRAS 04181+2655 mul 04 21 10.9 +27 02 06           ~ 50 0
26 IRAS 04181+2654 Y*O 04 21 11.469 +27 01 09.40           G0-M3 56 0
27 IRAS 04191+1523 Y*O 04 22 00.439 +15 30 21.21           ~ 183 0
28 IRAS 04239+2436 Y*O 04 26 56.297 +24 43 35.33           ~ 144 2
29 Barnard 217 DNe 04 27 46.5 +26 17 52           ~ 85 0
30 IRAS 04248+2612 Y*O 04 27 57.307 +26 19 18.30           M 142 0
31 IRAS 04260+2642 Y*O 04 29 04.9905794928 +26 49 06.897053333           K6 47 0
32 IRC +20082 AB* 04 29 07.6289350401 +24 43 50.032473131   20.57 17.37   10.45 M8III 72 0
33 V* GV Tau TT* 04 29 23.734 +24 33 00.28 19.20         K7 267 2
34 HBC 393 FU* 04 31 34.077 +18 08 04.90           K3V/M3III 778 2
35 V* V1213 Tau Or* 04 31 37.472 +18 12 24.48   19.78       K7 508 0
36 V* HL Tau TT* 04 31 38.437 +18 13 57.65   16.02 15.10 14.21   K5 1159 0
37 IRAS 04287+1807 mul 04 31 38.8 +18 13 57           ~ 796 0
38 2MASS J04314444+1808315 Y*O 04 31 44.447 +18 08 31.54           ~ 144 1
39 V* GG Tau TT* 04 32 30.3318954228 +17 31 40.834888327 14.84 14.78 13.40 11.54   M0e+M2.0e 638 1
40 IRAS 04295+2251 Y*O 04 32 32.055 +22 57 26.67           K0-M4 84 0
41 IRAS 04302+2247 Y*O 04 33 16.501 +22 53 20.40           ~ 133 0
42 IRAS 04325+2402 Y*O 04 35 35.392 +24 08 19.42           ~ 149 1
43 IRAS 04361+2547 Y*O 04 39 13.898 +25 53 20.63           ~ 183 1
44 IRAS 04365+2535 Y*O 04 39 35.194 +25 41 44.73           ~ 229 0
45 LDN 1527 DNe 04 39 53 +25 45.0           ~ 478 0
46 IRAS 04368+2557 Y*O 04 39 53.86 +26 03 09.7           ~ 229 0
47 IRAS 04381+2540 Y*O 04 41 12.679 +25 46 35.42           K0-M2 119 2
48 Barnard 220 DNe 04 41 38.8 +26 00 42           ~ 120 0
49 Haro 6-33 TT* 04 41 38.8300758211 +25 56 26.681998749     18.40     M0.5 98 2
50 TMC-1 MoC 04 41 45.9 +25 41 27           ~ 1337 0
51 LDN 1534 DNe 04 41 46 +25 41.4           ~ 43 0
52 IRAS 04489+3042 Y*O 04 52 06.6859847880 +30 47 17.016855701           M2 61 0
53 LDN 1594 Cld 05 44 29.8 +09 08 54           ~ 71 0
54 Barnard 35 DNe 05 45.5 +09 03           ~ 49 0
55 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 2971 0
56 LDN 260 DNe 16 46 58.2 -09 36 20           ~ 41 0
57 2MASS J16465826-0935197 Y*O 16 46 58.267 -09 35 19.72   19.6 17.4     ~ 32 0
58 NAME LDN 483-mm mm 18 17 29.8 -04 39 38           ~ 18 0
59 NAME LDN 483 FIR Y*O 18 17 29.8 -04 39 38           ~ 58 0
60 IRAS 18331-0035 FIR 18 35 42.135 -00 33 18.30           ~ 24 0
61 LDN 588 DNe 18 35 55 -00 30.2           ~ 16 0
62 [S2009] L723 XMM 8 * 19 17 53.1333789894 +19 12 16.410977926           ~ 38 0
63 NAME LDN 723-mm smm 19 17 53.70 +19 12 20.0           ~ 15 0
64 LDN 663 DNe 19 36 55 +07 34.4           ~ 544 0
65 IRAS 19345+0727 FIR 19 37 01.03 +07 34 10.9           ~ 65 0
66 NAME LDN 1157-mm Y*O 20 39 06.2 +68 02 15           ~ 155 0
67 LDN 970 DNe 21 12 13.1 +47 23 23           ~ 65 0
68 IRAS 21106+4712 mul 21 12 26.2 +47 24 24           ~ 19 0
69 PSCz Q23238+7401 Y*O 23 25 46.65 +74 17 37.2           ~ 54 1
70 LDN 1262 MoC 23 25 47 +74 17.6           ~ 130 0

    Equat.    Gal    SGal    Ecl

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2020.02.17-19:25:44

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