2012ApJ...754..104H

Query : 2012ApJ...754..104H

2012ApJ...754..104H - Astrophys. J., 754, 104 (2012/August-1)

The Spitzer survey of interstellar clouds in the Gould Belt. V. Ophiuchus North observed with IRAC and MIPS.

HATCHELL J., TEREBEY S., HUARD T., MAMAJEK E.E., ALLEN L., BOURKE T.L., DUNHAM M.M., GUTERMUTH R., HARVEY P.M., JORGENSEN J.K., MERIN B., NORIEGA-CRESPO A. and PETERSON D.E.

Abstract (from CDS):

We present Spitzer IRAC (2.1 deg2) and MIPS (6.5 deg2) observations of star formation in the Ophiuchus North (Oph N) molecular clouds. This fragmentary cloud complex lies on the edge of the Sco-Cen OB association, several degrees to the north of the well-known ρ Oph star-forming region, at an approximate distance of 130 pc. The Oph N clouds were mapped as part of the Spitzer Gould Belt project under the working name "Scorpius." In the regions mapped, selected to encompass all the cloud with visual extinction AV> 3, 11 young stellar object (YSO) candidates are identified, 8 from IRAC/MIPS color-based selection and 3 from Two Micron All Sky Survey (2MASS) KS/MIPS colors. Adding to one source previously identified in L43, this increases the number of YSOcs identified in Oph N to 12. During the selection process, four color-based YSOcs were rejected as probable asymptotic giant branch stars and one as a known galaxy. The sources span the full range of YSOc classifications from Class 0/1 to Class III, and starless cores are also present. Twelve high extinction (AV> 10) cores are identified with a total mass of ∼100 M☉. These results confirm that there is little ongoing star formation in this region (instantaneous star formation efficiency <0.34%) and that the bottleneck lies in the formation of dense cores. The influence of the nearby Upper Sco OB association, including the 09V star ζ Oph, is seen in dynamical interactions and raised dust temperatures but has not enhanced levels of star formation in Oph N.

Abstract Copyright: ∼

Journal keyword(s): circumstellar matter - infrared: stars - stars: evolution - stars: formation

Nomenclature: Tables 1-2: [HTH2012] OphN Na (Nos 1-2, 3a, 3b, 4-6). Tables 5,7: SSTgbs JHHMMSSs+DDMMSS N=15.

CDS comments: Objects [HTH2012] OphN Na are not in SIMBAD.

Simbad objects: 110

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Number of rows : 110
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 NAME Auriga reg 04 20 00.0 +38 05 00           ~ 207 0
2 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 4418 0
3 HH 301 HH 05 36 37.8 -06 21 26           ~ 10 0
4 HH 302 HH 05 36 48.6 -06 20 40           ~ 9 0
5 NAME Maddalena Cloud MoC 06 48.1 -03 52           ~ 96 0
6 NAME Musca Cld 12 23 -71.3           ~ 221 0
7 NAME Upper Centaurus Lupus As* 15 24 -41.9           ~ 475 1
8 Lupus 1 Cld 15 43 02.1 -34 09 06           ~ 286 0
9 Lupus 2 MoC 15 57 08 -37 47.1           ~ 114 1
10 NAME Upper Sco Association As* 16 12 -23.4           ~ 1369 1
11 NAME Upper Sco-Cen As* 16 15 -24.2           ~ 1331 1
12 LDN 1719 DNe 16 19.9 -20 07           ~ 23 0
13 HD 147009 * 16 20 03.9804239064 -20 02 41.528806944   8.32 8.06     A0V 88 1
14 V* V933 Sco a2* 16 20 05.4927999744 -20 03 23.030685720   7.56 7.40     B8:VpSrTiSiEu 191 0
15 IRAS 16174-2001 LP? 16 20 20.9524173312 -20 08 06.052646724           ~ 3 0
16 IC 4601 GNe 16 20 26 -20 09.6           ~ 6 0
17 HD 147103 ** 16 20 30.2664039984 -20 07 03.776227176   7.87 7.56     B9/A0V 54 1
18 HD 147104 * 16 20 30.5682271248 -20 06 51.999342408   8.81 8.41     B9.5Va 54 0
19 Lupus 5 MoC 16 21 -37.5           ~ 63 0
20 LDN 1719D DNe 16 21 05.4 -20 07 05           ~ 9 0
21 [NMT91] Cloud A MoC 16 21 11 -20 11.5           ~ 2 0
22 * sig Sco bC* 16 21 11.3157134 -25 35 34.051476 2.32 3.02 2.89 1.69 1.58 B1III+B1:V 870 0
23 IRAS 16186-1953 LP* 16 21 37.6917934800 -20 00 37.123913880           ~ 5 1
24 2MASS J16220435-1943265 Y*O 16 22 04.3537752912 -19 43 26.666224716           ~ 12 0
25 2MASS J16220961-1953005 Y*O 16 22 09.6133283784 -19 53 00.746210256       14.27   M3.7 22 0
26 LDN 1719B DNe 16 22 12.3 -19 38 41           ~ 17 0
27 JCMTSF J162214.2-193926 MoC 16 22 14 -19 39.5           ~ 3 0
28 2MASS J16221481-2045398 Y*O 16 22 14.8125988488 -20 45 39.908894616           M5 10 0
29 2RXP J162230.1-200256 Y*O 16 22 30.1 -20 02 56           ~ 1 0
30 Lupus 6 Cld 16 25 -40.3           ~ 51 1
31 * rho Oph ** 16 25 35.11766 -23 26 49.8150 4.30 4.85 4.63 4.27 3.96 B2IV+B2V 648 0
32 * chi Oph Be* 16 27 01.4355697915 -18 27 22.499961252 3.95 4.71 4.43 3.97 3.73 B2Vne 598 0
33 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3631 1
34 LDN 1752 DNe 16 29.9 -19 36           ~ 9 0
35 6dFGS gJ163139.8-202044 Sy2 16 31 39.7874433936 -20 20 43.557418608   18.21   16.13   ~ 4 0
36 ATO J247.9271-20.6371 Y*O 16 31 42.5218818456 -20 38 13.652075616           ~ 2 0
37 LDN 1757 DNe 16 31.9 -19 36           ~ 16 0
38 LDN 1689 DNe 16 32 22.5 -24 28 29           ~ 137 0
39 V* V1003 Oph TT* 16 34 09.1696133088 -15 48 16.776092124     13.44     G5 98 0
40 LDN 43 DNe 16 34 29.3 -15 47 11           ~ 142 1
41 HBC 650 TT* 16 34 29.32 -15 47 01.4           K3.0 177 2
42 LBN 006.00+24.73 HII 16 35 56.8 -12 43 05           ~ 62 0
43 * zet Oph Be* 16 37 09.5400587698 -10 34 01.509742704 1.73 2.58 2.56 2.46 2.50 O9.2IVnn 1839 0
44 LDN 1712 DNe 16 38.0 -24 26           ~ 38 0
45 HD 149914 * 16 38 28.6527873384 -18 13 13.713126384   6.967 6.746     B9.5IV 70 0
46 LDN 1729 DNe 16 43.0 -24 06           ~ 31 0
47 IRAS 16439-0945 IR 16 46 42.4 -09 51 13           ~ 2 0
48 IRAS 16439-1353 FIR 16 46 45.0 -13 59 03           ~ 2 0
49 [VRC2001] L260 SMM 1 smm 16 46 58.1 -09 35 18           ~ 3 0
50 LDN 260 DNe 16 46 58.2 -09 36 20           ~ 43 0
51 2MASS J16465826-0935197 Y*O 16 46 58.2599324664 -09 35 20.090942592   19.6 17.4     ~ 35 0
52 [TMF2000] Core u2 PoC 16 47 01 -09 35.7           ~ 2 0
53 IRAS 16442-1351 FIR 16 47 06.7 -13 56 41           ~ 2 0
54 LDN 255 DNe 16 47 06.7 -09 35 21           ~ 35 0
55 JCMTSF J164709.2-093501 smm 16 47 09.0 -09 35 05           ~ 5 0
56 [TMF2000] Core r1 PoC 16 47 18 -13 59.7           ~ 2 0
57 IRAS 16445-1352 FIR 16 47 23.2 -13 57 21           ~ 10 0
58 [TMF2000] Core s4 PoC 16 47 30 -12 13.0           ~ 2 0
59 LDN 204C DNe 16 47 38.4 -12 08 04           ~ 10 0
60 [TMF2000] Core s2 PoC 16 47 39 -12 37.5           ~ 2 0
61 [TMF2000] Core s5 PoC 16 47 41 -11 58.8           ~ 2 0
62 IRAS 16449-1001 FIR 16 47 41.8 -10 06 57           ~ 1 0
63 [TMF2000] Core s3 PoC 16 47 46 -12 24.9           ~ 2 0
64 LDN 204 DNe 16 47 47.3 -12 05 16           ~ 54 0
65 LDN 158 DNe 16 47 50 -14 05.3           ~ 33 0
66 [TMF2000] Core u1 PoC 16 47 52 -09 53.1           ~ 2 0
67 LDN 234E DNe 16 48 04.5 -10 56 58           ~ 26 0
68 IRAS 16454-0955 IR 16 48 09.7 -10 00 52   19.6 17.3     ~ 3 0
69 [NMT91] Cloud T MoC 16 48 11 -10 53.0           ~ 2 0
70 2MASS J16481763-1411090 Y*? 16 48 17.6330931456 -14 11 08.991988044         14.10 ~ 3 0
71 Wa Oph 4 Or* 16 48 18.0034524096 -14 11 15.801239760   15.40 13.46     K5Ve 30 0
72 IRAS 16455-1405 mul 16 48 21.8 -14 10 45           ~ 10 0
73 PDS 91 Y*O 16 48 21.887088 -14 10 42.60432   17.027 15.049 12.9   ~ 14 0
74 [TMF2000] Core s1 PoC 16 48 23 -13 03.7           ~ 2 0
75 6dFGS gJ164828.8-141437 G 16 48 28.854 -14 14 36.60           ~ 1 0
76 Hen 3-1258 Or* 16 48 45.6326070624 -14 16 35.849828856   14.94 13.34 12.84   K6 121 0
77 LDN 234 DNe 16 48.8 -11 05           ~ 12 0
78 [TMF2000] Core p1 PoC 16 48 56 -15 36.4           ~ 2 0
79 2MASS J16490082-1417108 TT* 16 49 00.8094451056 -14 17 10.762697436   17.1 15.2     ~ 15 0
80 LDN 162 DNe 16 49 03 -14 10.7           ~ 21 0
81 IRAS 16462-1532 AB* 16 49 05.5896413232 -15 37 13.178277084       17.92   ~ 5 0
82 EM* AS 209 TT* 16 49 15.3034917000 -14 22 08.643317664   12.62 11.28     K4Ve 390 0
83 [TMF2000] Core r2 PoC 16 49 16 -14 08.4           ~ 2 0
84 LDN 152 DNe 16 49.8 -14 35           ~ 3 0
85 LDN 163 DNe 16 49.8 -14 20           ~ 5 0
86 [TMF2000] Core p2 PoC 16 50 48 -15 23.2           ~ 2 0
87 LDN 137 DNe 16 50.9 -15 25           ~ 9 0
88 LDN 141 DNe 16 50.9 -15 15           ~ 8 0
89 NAME Scorpius Complex reg 16 51 00.0 -25 20 00           ~ 41 0
90 IRAS 16484-1557 Mi* 16 51 21.4143590160 -16 02 58.243862724   17.00   16.15 11.34 ~ 9 0
91 [TMF2000] Core q1 PoC 16 55 01 -16 49.7           ~ 2 0
92 IRAS 16534-1557 IR 16 56 15.9 -16 02 08           ~ 3 0
93 LDN 146 MoC 16 57 17.5 -16 09 18           ~ 77 1
94 IRAS 16544-1604 Y*O 16 57 19.626 -16 09 23.30           ~ 35 1
95 * ksi Oph PM* 17 21 00.3745211364 -21 06 46.571010951   4.752 4.387     F2V 135 0
96 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 14420 0
97 NAME Serpens Cloud SFR 18 29 49 +01 14.8           ~ 1100 2
98 NAME Serpens South Cluster Cl* 18 30 03.00 -02 01 58.2           ~ 132 0
99 NAME Aql Region reg 18 31.1 -02 10           ~ 391 0
100 NAME CrA Complex reg 19 15 00.0 -37 30 00           ~ 109 1
101 IC 5146 OpC 21 53 29.3 +47 14 46           ~ 467 2
102 NAME Cepheus Flare MoC 23 34 +72.0           ~ 128 0
103 [NMT91] Cloud P MoC ~ ~           ~ 2 0
104 [NMT91] Cloud S MoC ~ ~           ~ 2 0
105 [NMT91] Cloud R MoC ~ ~           ~ 2 0
106 [NMT91] Cloud U MoC ~ ~           ~ 2 0
107 NAME Gould Belt PoG ~ ~           ~ 874 1
108 [DBT90] Complex 4 MoC ~ ~           ~ 2 0
109 [NMT91] Cloud C MoC ~ ~           ~ 2 0
110 [NMT91] Cloud Q MoC ~ ~           ~ 2 0

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