2009AJ....137.4072M

Query : 2009AJ....137.4072M

2009AJ....137.4072M - Astron. J., 137, 4072-4082 (2009/April-0)

Detection of star formation in the unusually cold giant molecular cloud G216-2.5.

MEGEATH S.T., ALLGAIER E., YOUNG E., ALLEN T., PIPHER J.L. and WILSON T.L.

Abstract (from CDS):

The giant molecular cloud G216-2.5, also known as Maddalena's cloud or the Maddalena-Thaddeus cloud, is distinguished by an unusual combination of high gas mass (1-6x105 M☉), low kinetic temperatures (10 K), and the lack of bright far-IR emission. Although star formation has been detected in neighboring satellite clouds, little evidence for star formation has been found in the main body of this cloud. Using a combination of mid-IR observations with the IRAC and Multiband Imaging Photometer for Spitzer instruments onboard the Spitzer Space Telescope, and near-IR images taken with the Flamingos camera on the KPNO 2.1 m telescope, we identify a population of 41 young stars with disks and 33 protostars in the center of the cloud. Most of the young stellar objects are coincident with a filamentary structure of dense gas detected in CS (2 {x2192} 1). These observations show that the main body of G216 is actively forming stars, although at a low stellar density comparable to that found in the Taurus cloud.

Abstract Copyright: ∼

Journal keyword(s): ISM: clouds - stars: formation - stars: pre-main sequence

VizieR on-line data: <Available at CDS (J/AJ/137/4072): table1.dat>

Nomenclature: Table 1: [MAY2009] NN (Nos 1-74).

Simbad objects: 83

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Number of rows : 83
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 Taurus Complex SFR 04 41.0 +25 52           ~ 4971 0
2 HD 245185 Ae* 05 35 09.6034684104 +10 01 51.465413208 10.05 10.07 9.93     A0Vae 145 0
3 NAME Ori A MoC 05 38 -07.1           ~ 3187 0
4 NAME Orion Molecular Cloud MoC 05 56 -01.8           ~ 1227 1
5 IRAS 06453-0209 IR 06 47 50.517 -02 12 53.88           ~ 17 0
6 NAME Maddalena Cloud MoC 06 48.1 -03 52           ~ 100 0
7 2MASS J06481561-0440368 Y*O 06 48 15.6138613248 -04 40 36.887175804           ~ 1 0
8 2MASS J06481731-0439455 Y*O 06 48 17.3002969248 -04 39 44.861985432           ~ 1 0
9 [MAY2009] 36 Y*O 06 48 17.4 -04 30 02           ~ 1 0
10 [MAY2009] 1 Y*O 06 48 17.7 -04 31 10           ~ 1 0
11 [MAY2009] 37 Y*O 06 48 19.6 -04 44 12           ~ 1 0
12 [MAY2009] 38 Y*O 06 48 20.7 -04 27 40           ~ 1 0
13 2MASS J06482275-0450112 Y*O 06 48 22.7535208728 -04 50 11.298962112           ~ 1 0
14 [MAY2009] 2 Y*O 06 48 23.1 -04 32 49           ~ 1 0
15 [MAY2009] 40 Y*O 06 48 25.4 -04 39 26           ~ 1 0
16 [MAY2009] 41 Y*O 06 48 26.4 -04 42 19           ~ 2 0
17 [MAY2009] 42 Y*O 06 48 28.3 -04 37 59           ~ 1 0
18 [MAY2009] 3 Y*O 06 48 28.7 -04 42 04           ~ 1 0
19 [MAY2009] 43 Y*O 06 48 28.7 -04 41 35           ~ 1 0
20 [MAY2009] 4 Y*O 06 48 29.7 -04 41 13           ~ 1 0
21 [MAY2009] 45 Y*O 06 48 29.9 -04 41 17           ~ 1 0
22 [MAY2009] 44 Y*O 06 48 29.9 -04 41 35           ~ 1 0
23 [MAY2009] 46 Y*O 06 48 30.2 -04 41 21           ~ 1 0
24 [MAY2009] 47 Y*O 06 48 30.4 -04 41 39           ~ 1 0
25 [MAY2009] 5 Y*O 06 48 30.9 -04 41 33           ~ 1 0
26 [MAY2009] 48 Y*O 06 48 31.0 -04 41 44           ~ 1 0
27 [MAY2009] 6 Y*O 06 48 33.7 -04 40 25           ~ 1 0
28 [MAY2009] 7 Y*O 06 48 34.1 -04 40 42           ~ 1 0
29 [MAY2009] 8 Y*O 06 48 35.3 -04 35 12           ~ 1 0
30 2MASS J06483587-0441586 Y*O 06 48 35.8629135432 -04 41 59.013367728           ~ 1 0
31 [MAY2009] 9 Y*O 06 48 37.7 -04 39 13           ~ 1 0
32 [MAY2009] 10 Y*O 06 48 38.8 -04 38 27           ~ 1 0
33 [MAY2009] 50 Y*O 06 48 39.8 -04 38 44           ~ 1 0
34 [MAY2009] 11 Y*O 06 48 40.8 -04 38 34           ~ 1 0
35 [MAY2009] 51 Y*O 06 48 42.3 -04 38 33           ~ 1 0
36 [MAY2009] 12 Y*O 06 48 42.6 -04 38 34           ~ 1 0
37 [MAY2009] 13 Y*O 06 48 42.9 -04 26 30           ~ 1 0
38 [MAY2009] 52 Y*O 06 48 45.6 -04 40 50           ~ 1 0
39 [MAY2009] 14 Y*O 06 48 46.9 -04 43 16           ~ 1 0
40 [MAY2009] 15 Y*O 06 48 51.3 -04 36 14           ~ 1 0
41 [MAY2009] 16 Y*O 06 48 51.4 -04 28 48           ~ 1 0
42 [MAY2009] 53 Y*O 06 48 52.5 -04 49 10           ~ 1 0
43 [MAY2009] 17 Y*O 06 48 52.6 -04 36 03           ~ 1 0
44 [MAY2009] 54 Y*O 06 48 52.7 -04 35 56           ~ 1 0
45 [MAY2009] 55 Y*O 06 48 53.6 -04 45 52           ~ 1 0
46 [MAY2009] 56 Y*O 06 48 56.8 -04 32 49           ~ 1 0
47 [MAY2009] 18 Y*O 06 48 58.7 -04 37 35           ~ 1 0
48 [MAY2009] 57 Y*O 06 48 58.7 -04 36 47           ~ 1 0
49 [MAY2009] 19 Y*O 06 48 58.9 -04 36 58           ~ 1 0
50 [MAY2009] 58 Y*O 06 48 59.3 -04 37 46           ~ 1 0
51 [MAY2009] 20 Y*O 06 48 59.8 -04 36 46           ~ 1 0
52 [MAY2009] 21 Y*O 06 49 00.4 -04 32 24           ~ 1 0
53 [MAY2009] 22 Y*O 06 49 01.6 -04 37 27           ~ 1 0
54 CoRoT 110828497 Y*O 06 49 01.7191978848 -04 41 59.896755528   16.079 15.174 14.851   ~ 3 0
55 [MAY2009] 23 Y*O 06 49 02.1 -04 37 29           ~ 1 0
56 [MAY2009] 60 Y*O 06 49 03.6 -04 43 09           ~ 1 0
57 [MAY2009] 61 Y*O 06 49 04.4 -04 33 08           ~ 1 0
58 [MAY2009] 62 Y*O 06 49 04.5 -04 32 50           ~ 1 0
59 [MAY2009] 24 Y*O 06 49 04.8 -04 32 42           ~ 1 0
60 [MAY2009] 63 Y*O 06 49 05.1 -04 32 41           ~ 1 0
61 [MAY2009] 25 Y*O 06 49 06.8 -04 32 56           ~ 1 0
62 [MAY2009] 26 Y*O 06 49 07.2 -04 33 02           ~ 1 0
63 [MAY2009] 27 Y*O 06 49 07.7 -04 33 00           ~ 1 0
64 [MAY2009] 64 Y*O 06 49 09.7 -04 36 27           ~ 1 0
65 [MAY2009] 65 Y*O 06 49 10.1 -04 38 05           ~ 1 0
66 [MAY2009] 28 Y*O 06 49 10.2 -04 38 00           ~ 1 0
67 [MAY2009] 66 Y*O 06 49 10.6 -04 32 54           ~ 1 0
68 [MAY2009] 67 Y*O 06 49 11.0 -04 38 19           ~ 1 0
69 [MAY2009] 29 Y*O 06 49 11.0 -04 33 24           ~ 1 0
70 [MAY2009] 68 Y*O 06 49 11.3 -04 32 31           ~ 1 0
71 [MAY2009] 30 Y*O 06 49 11.7 -04 33 05           ~ 1 0
72 [MAY2009] 69 Y*O 06 49 12.2 -04 39 40           ~ 1 0
73 [MAY2009] 31 Y*O 06 49 12.4 -04 33 11           ~ 1 0
74 [MAY2009] 70 Y*O 06 49 12.7 -04 47 35           ~ 1 0
75 [MAY2009] 71 Y*O 06 49 13.5 -04 32 36           ~ 1 0
76 [MAY2009] 72 Y*O 06 49 14.0 -04 30 58           ~ 1 0
77 [MAY2009] 32 Y*O 06 49 14.2 -04 32 49           ~ 1 0
78 [MAY2009] 33 Y*O 06 49 14.4 -04 32 30           ~ 1 0
79 2MASS J06493056-0424504 Y*O 06 49 30.5620160400 -04 24 50.504848884           ~ 1 0
80 [MAY2009] 74 Y*O 06 49 34.7 -04 46 41           ~ 1 0
81 LEDA 136697 G 06 54 46.0 -03 54 32           ~ 10 0
82 LBN 1012 HII 06 59 29 -04 49.2           ~ 50 0
83 NAME Ori Mon Complex Cld ~ ~           ~ 19 0

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