2017MNRAS.467..812M

Query : 2017MNRAS.467..812M

2017MNRAS.467..812M - Mon. Not. R. Astron. Soc., 467, 812-835 (2017/May-1)

The JCMT Gould Belt Survey: a first look at SCUBA-2 observations of the Lupus I molecular cloud.

MOWAT C., HATCHELL J., RUMBLE D., KIRK H., BUCKLE J., BERRY D.S., BROEKHOVEN-FIENE H., CURRIE M.J., JENNESS T., JOHNSTONE D., MOTTRAM J.C., PATTLE K., TISI S., DI FRANCESCO J., HOGERHEIJDE M.R., WARD-THOMPSON D., BASTIEN P., BRESNAHAN D., BUTNER H., CHEN M., CHRYSOSTOMOU A., COUDE S., DAVIS C.J., DRABEK-MAUNDER E., DUARTE-CABRAL A., FICH M., FIEGE J., FRIBERG P., FRIESEN R., FULLER G.A., GRAVES S., GREAVES J., HOLLAND W., JONCAS G., KIRK J.M., KNEE L.B.G., MAIRS S., MARSH K., MATTHEWS B.C., MORIARTY-SCHIEVEN G., RAWLINGS J., RETTER B., RICHER J., ROBERTSON D., ROSOLOWSKY E., SADAVOY S., THOMAS H., TOTHILL N., VITI S., WHITE G.J., WOUTERLOOT J., YATES J. and ZHU M.

Abstract (from CDS):

This paper presents observations of the Lupus I molecular cloud at 450 and 850 µm with Submillimetre Common User Bolometer Array (SCUBA-2) as part of the James Clerk Maxwell Telescope Gould Belt Survey (JCMT GBS). Nine compact sources, assumed to be the discs of young stellar objects (YSOs), 12 extended protostellar, pre-stellar and starless cores, and one isolated, low-luminosity protostar, are detected in the region. Spectral energy distributions, including submillimetre fluxes, are produced for 15 YSOs, and each is fitted with the models of Robitaille et al. The proportion of Class 0/I protostars is higher than that seen in other Gould Belt regions such as Ophiuchus and Serpens. Circumstellar disc masses are calculated for more evolved sources, while protostellar envelope masses are calculated for protostars. Up to four very low luminosity objects are found; a large fraction when compared to other Spitzer c2d regions. One YSO has a disc mass greater than the minimum mass solar nebula. 12 starless/protostellar cores are detected by SCUBA-2 and their masses are calculated. The stability of these cores is examined using both the thermal Jeans mass and a turbulent virial mass when possible. Two cores in Lupus I are super-Jeans and contain no known YSOs. One of these cores has a virial parameter of 1.1 ± 0.4, and could therefore be pre-stellar. The high ratio of Class 0/I to Class III YSOs (1:1), and the presence of a pre-stellar core candidate, provides support for the hypothesis that a shock recently triggered star formation in Lupus I.

Abstract Copyright: © 2017 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): catalogues - stars: formation - stars: pre-main-sequence - stars: protostars - ISM: structure - submillimetre: general - submillimetre: general

Nomenclature: Fig. 3, Table 2: [MHR2017] L1YSO NN (Nos 1-15). Fig. 5, Table 12: [MHR2017] L1S2 NN (Nos 1-12).

Simbad objects: 55

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Number of rows : 55
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME Perseus Cloud SFR 03 35.0 +31 13           ~ 1553 0
2 IC 348 OpC 03 44 31.1 +32 10 02           ~ 1476 1
3 NGC 1499 HII 04 03 18 +36 25.3           ~ 179 0
4 LDN 1495 DNe 04 18.1 +27 37           ~ 408 1
5 NAME Auriga reg 04 20 00.0 +38 05 00           ~ 238 0
6 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 4971 0
7 NAME Ori A MoC 05 38 -07.1           ~ 3187 0
8 NAME Ori B MoC 05 41 43.0 -01 54 44           ~ 1498 0
9 NGC 2264 OpC 06 40 53.7 +09 52 32           ~ 1876 0
10 NAME Cha 1 MoC 11 06 48 -77 18.0           ~ 1266 1
11 NAME Cha III MoC 12 37.8 -80 15           ~ 147 2
12 NAME Upper Centaurus Lupus MGr 15 24 -41.9           ~ 567 1
13 SSTc2d J153848.2-344041 MIR 15 38 48.204 -34 40 40.90           ~ 2 0
14 SSTc2d J153927.3-344844 MIR 15 39 27.275 -34 48 44.27           ~ 1 0
15 Sz 65 Or* 15 39 27.7716659160 -34 46 17.211087984   13.11 12.13 11.33 10.76 K7 118 0
16 Sz 66 TT* 15 39 28.2828956688 -34 46 18.082914564   14.9   14.51 12.56 M2 75 0
17 [MHR2017] L1S2 12 cor 15 39 34.5 -34 45 56           ~ 1 0
18 [MHR2017] L1S2 11 cor 15 40 35.0 -34 40 22           ~ 1 0
19 2MASS J15421455-3410256 Y*O 15 42 14.553 -34 10 25.64         19.33 ~ 8 0
20 2MASS J15424030-3413428 Y*O 15 42 40.3068592752 -34 13 42.881476080   19.74   18.17 14.64 ~ 9 0
21 [BPB2012] Lup1 C3 cor 15 42 47.50 -34 08 00.0           ~ 3 0
22 [BPB2012] Lup1 C4 cor 15 43 00.00 -34 09 09.0           ~ 4 0
23 Barnard 228 cor 15 43 00.9 -34 08 48           ~ 70 0
24 2MASS J15430131-3409153 Y*O 15 43 01.31640 -34 09 15.3036       18.38 21.72 ~ 13 0
25 Lupus 1 Cld 15 43 02.1 -34 09 06           ~ 320 0
26 IRAS 15398-3359 Y*? 15 43 02.21016 -34 09 07.7112       18.38 21.72 ~ 215 0
27 2MASS J15445789-3423392 Or* 15 44 57.8922421008 -34 23 39.355357344   18.38 17.74 17.29 15.28 M5.0e 39 0
28 [BPB2012] Lup1 C6 cor 15 45 00.00 -34 17 15.0           ~ 4 0
29 2MASS J15450634-3417378 Y*? 15 45 06.34296 -34 17 37.8312           ~ 27 0
30 [MHR2017] L1S2 9 cor 15 45 08.7 -34 17 18           ~ 2 0
31 2MASS J15450887-3417333 Or* 15 45 08.8742780880 -34 17 33.454839372       18.73   M5.5 54 0
32 [MHR2017] L1S2 4 cor 15 45 12.7 -34 17 27           ~ 1 0
33 CD-33 10685 Or* 15 45 12.8678037432 -34 17 30.644403036 12.47 11.56 10.224 9.60 8.685 K3Ve 306 1
34 [MHR2017] L1S2 3 cor 15 45 13.4 -34 17 02           ~ 1 0
35 [BPB2012] Lup1 C7 cor 15 45 17.00 -34 17 00.0           ~ 4 0
36 V* HW Lup Or* 15 45 17.4118414392 -34 18 28.286447220   17.41 16.25     M1 87 0
37 2MASS J15451851-3421246 Or* 15 45 18.5160315960 -34 21 24.553939896   17.95   17.35   M6.5 27 0
38 [MHR2017] L1S2 8 cor 15 45 25.8 -34 23 46           ~ 1 0
39 [MHR2017] L1S2 10 cor 15 45 27.1 -34 22 56           ~ 1 0
40 IRAS 15422-3414 LM* 15 45 29.7779464056 -34 23 38.800962384           ~ 12 0
41 [BPB2012] Lup1 C8 cor 15 45 30.00 -34 24 00.0           ~ 3 0
42 V* GW Lup Or* 15 46 44.7290527536 -34 30 35.677420056   13.8       M1.5e 201 0
43 NAME Lupus Complex SFR 16 03 -38.1           ~ 851 0
44 Lupus 4 MoC 16 03 12.4 -42 07 43           ~ 163 0
45 Lupus 3 SFR 16 09.6 -39 03           ~ 348 0
46 NAME Upper Sco-Cen As* 16 15 -24.2           ~ 1497 1
47 Lupus 5 MoC 16 21 -37.5           ~ 63 0
48 Lupus 6 Cld 16 25 -40.3           ~ 51 1
49 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3969 1
50 NAME Scorpius Complex reg 16 51 00.0 -25 20 00           ~ 44 0
51 EM* MWC 297 Ae* 18 27 39.5265500160 -03 49 52.133050776 15.57 14.34 12.31 11.34   B1.5Ve 315 0
52 [KOB2004] 9 IR 18 28 43.6 +01 16 10           ~ 2 0
53 NAME Serpens Cloud SFR 18 29 49 +01 14.8           ~ 1195 1
54 LBN 028.77+03.43 HII 18 31 26.5 -02 04 22           ~ 255 2
55 NAME Gould Belt PoG ~ ~           ~ 956 1

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