2015ApJ...806...40L

Query : 2015ApJ...806...40L

2015ApJ...806...40L - Astrophys. J., 806, 40 (2015/June-2)

A 13CO survey of intermediate-mass star-forming regions.

LUNDQUIST M.J., KOBULNICKY H.A., KERTON C.R. and ARVIDSSON K.

Abstract (from CDS):

We have conducted a 13CO survey of a sample of 128 infrared color-selected intermediate-mass star-forming region (IM SFR) candidates. We utilized the Onsala 20 m telescope to observe 13CO (1-0) toward 67 northern IM SFRs, used the 12 m Atacama Pathfinder Experiment telescope to observe 13CO (2-1) toward 22 southern IM SFRs, and incorporated an additional 39 sources from the Boston University Five College Radio Astronomy Observatory Galactic Ring Survey which observed 13CO (1-0). We detect 13CO (1-0) in 58 of the 67 northern sources and 13CO (2-1) in 20 of the 22 southern sources. The mean molecular column densities and 13CO linewidths in the inner Galaxy are higher by factors of 3.4 and 1.5, respectively, than the outer Galaxy. We attribute this difference to molecular clouds in the inner Galaxy being more massive and hosting star forming regions with higher luminosities on average than the outer Galaxy. IM SFRs have mean a molecular column density of 7.89x1021/cm2, a factor of 3.1 lower than that for a sample of high-mass regions, and have a mean 13CO linewidth of 1.84 km/s, a factor of 1.5 lower than that for high-mass regions. We demonstrate a correlation between 13CO linewidth and infrared luminosity as well as between molecular column density and infrared luminosity for the entire sample of intermediate-mass and high-mass regions. IM SFRs appear to form in distinctly lower-density environments with mean linewidths and beam-averaged column densities a factor of several lower than high-mass star-forming regions.

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Journal keyword(s): ISM: clouds - ISM: molecules - stars: formation

Simbad objects: 133

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Number of rows : 133
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 IRAS 00259+5625 Y*? 00 28 41.64408 +56 41 52.6956           ~ 29 1
2 IRAS 00420+5530 Y*? 00 44 57.31 +55 47 18.1           ~ 61 0
3 IRAS 01041+5828 IR 01 07 11.4 +58 44 43           ~ 4 0
4 IRAS 01082+5717 IR 01 11 22.2 +57 33 32           ~ 4 0
5 IRAS 01467+5339 IR 01 50 00.9 +53 54 37           ~ 3 0
6 IRAS 01573+6730 IR 02 01 15.6 +67 45 09           ~ 7 0
7 UCAC4 727-020080 Or* 02 16 30.7111817472 +55 23 00.139141680   14.92 14.32 14.52   B3 37 0
8 IRAS 05068-7032 IR 05 06 21.9 -70 28 18           ~ 4 0
9 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
10 IRAS 05380+2020 G 05 40 59.2873621344 +20 21 31.718397924   12.88 12.15 12.10   ~ 12 0
11 IRAS 05378+2928 IR 05 41 05.167 +29 30 26.02           ~ 7 0
12 IRAS 05396+2855 IR 05 42 48.4 +28 56 51           ~ 6 0
13 TYC 1871-1284-1 * 05 58 29.6862376080 +26 42 12.086802396   12.64 12.01     ~ 7 0
14 IRAS 05591+2027 mul 06 02 09.9 +20 27 14           ~ 7 0
15 IRAS 05593+1711 IR 06 02 16.2 +17 11 19           ~ 7 0
16 IRAS 06008+3129 Cld 06 04 08.7 +31 29 33           ~ 6 0
17 IRAS 06045+3006 IR 06 07 48.1 +30 06 00           ~ 5 0
18 IRAS 06060+1655 IR 06 08 54.9 +16 54 36           ~ 6 0
19 IRAS 06061+2028 IR 06 09 09.0 +20 27 39           ~ 11 0
20 IRAS 06065+2124 IR 06 09 30.9 +21 23 57           ~ 11 0
21 IRAS 06091+1510 G 06 12 03.8 +15 09 20           ~ 6 0
22 IRAS 06110+1847 MIR 06 14 00.76488 +18 46 55.9812           ~ 6 0
23 IRAS 06133+2419 Em* 06 16 23.8548858816 +24 18 08.420681160           ~ 9 0
24 JCMTSF J061724.0+145444 Cl* 06 17 24.30 +14 54 37.2           ~ 31 0
25 IRAS 06166+1724 IR 06 19 32.6 +17 22 42           ~ 7 0
26 IRAS 06175+1108 PN? 06 20 21.7011468576 +11 07 10.077407832           ~ 5 0
27 IRAS 06178+1539 IR 06 20 40.5 +15 38 18           ~ 4 0
28 IRAS 06181+1057 IR 06 20 53.9 +10 56 33           ~ 4 0
29 LBN 189.33+04.40 RNe 06 23 12.1 +22 52 35           ~ 9 0
30 IRAS 06212+1645 IR 06 24 07.9 +16 44 11           ~ 6 0
31 IRAS 06226+0733 SFR 06 25 19.78 +07 31 31.5           ~ 10 0
32 IRAS 06314+0427 IR 06 34 04.92 +04 25 00.1           ~ 25 1
33 Cl Collinder 106 OpC 06 37 02.6 +05 59 54     4.6     ~ 55 0
34 IRAS 06348+0234 IR 06 37 27.6 +02 32 10           ~ 8 0
35 IRAS 06358+0047 IR 06 38 27.5 +00 44 41           ~ 9 0
36 IRAS 06375-0141 G 06 40 02.9 -01 44 44           ~ 7 0
37 IRAS 06416+0701 IR 06 44 20.5 +06 58 44           ~ 3 0
38 IRAS 06427+0507 mul 06 45 22.3 +05 03 49           ~ 4 0
39 IRAS 06446+0319 mul 06 47 19.3 +03 15 48           ~ 4 0
40 IRAS 06448+0543 IR 06 47 31.2 +05 40 05           ~ 5 0
41 IRAS 06454+0020 IR 06 48 03.2366272920 +00 17 33.415462068           ~ 7 0
42 IRAS 06486-0110 IR 06 51 14.3 -01 14 33           ~ 7 0
43 LEDA 136609 G 06 52 12.8 +02 13 27           ~ 9 0
44 IRAS 06520+0018 IR 06 54 36.4 +00 14 58           ~ 5 0
45 IRAS 06527-0027 IR 06 55 16.8 -00 31 05           ~ 6 0
46 IRAS 06559-0134 IR 06 58 27.6 -01 38 35           ~ 5 0
47 IRAS 07195-1538 IR 07 21 48.7 -15 44 06           ~ 4 0
48 BRAN 22C RNe 07 24 14.1 -24 38 16           ~ 10 0
49 IRAS 07226-1602 Y*? 07 24 54.9063032640 -16 08 11.106629304           ~ 4 0
50 IRAS 07260-2202 MIR 07 28 09.43800 -22 08 39.9048           ~ 3 0
51 IRAS 07492-2639 HII 07 51 17.44896 -26 46 36.1884           ~ 4 0
52 IRAS 07512-3406 IR 07 53 07.5 -34 14 35           ~ 3 0
53 ESO 494-1 RNe 07 55 06.9 -25 21 40   12.68   12.63   ~ 17 1
54 IRAS 07587-3050 IR 08 00 44.8 -30 59 12           ~ 3 0
55 IRAS 08236-4049 IR 08 25 26.9 -40 59 00           ~ 3 0
56 IRAS 08323-4247 IR 08 34 07.8 -42 58 05           ~ 3 0
57 IRAS 08342-4150 MIR 08 36 04.38288 -42 00 44.3520           ~ 3 0
58 IRAS 09074-5056 mul 09 09 04.5 -51 08 54           ~ 4 0
59 IRAS 09100-4922 IR 09 11 45.3 -49 35 09           ~ 3 0
60 IRAS 09288-5427 IR 09 30 30.1 -54 40 20           ~ 3 0
61 IRAS 09453-5647 IR 09 46 59.4 -57 01 53           ~ 3 0
62 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
63 IRAS 18131-1606 MIR 18 16 01.56960 -16 05 08.8332           ~ 10 0
64 IRAS 18144-1700 IR 18 17 22.1 -16 59 13           ~ 4 0
65 IRAS 18180-1342 Cld 18 20 55.1 -13 40 41           ~ 6 0
66 IRAS 18199-1603 IR 18 22 51.4 -16 02 15           ~ 3 0
67 IRAS 18224-1228 IR 18 25 12.7 -12 27 10           ~ 9 0
68 IRAS 18241-1320 Y*? 18 26 58.94352 -13 18 58.5540           ~ 5 0
69 IRAS 18253-1210 IR 18 28 11.5 -12 08 05           ~ 4 0
70 HD 170634 Or* 18 30 24.8757877680 +01 13 23.641855860 10.53 10.43 9.85     B8V 60 1
71 IRAS 18300-0458 IR 18 32 41.1 -04 56 18           ~ 3 0
72 IRAS 18308-0741 IR 18 33 35.9 -07 38 51           ~ 6 0
73 IRAS 18314-0517 AB? 18 34 06.30120 -05 14 46.9212           ~ 7 0
74 IRAS 18318-0434 IR 18 34 32.7 -04 31 46           ~ 4 0
75 IRAS 18322-0956 MIR 18 34 57.58824 -09 53 42.7704           ~ 4 0
76 IRAS 18370-0607 IR 18 39 46.6 -06 04 36           ~ 5 0
77 IRAS 18412-0440 IR 18 43 56.4 -04 37 18           ~ 7 0
78 IRAS 18441-0118 IR 18 46 41.4 -01 15 01           ~ 4 0
79 IRAS 18463-0052 Y*O 18 48 52.8 -00 49 02           ~ 11 0
80 IRAS 18502-0018 Cld 18 52 46.2 -00 15 02           ~ 5 0
81 IRAS 18504+0025 HII 18 53 00.2 +00 28 49           ~ 8 0
82 IRAS 18530+0515 IR 18 55 29.4 +05 19 19           ~ 4 0
83 IRAS 18537+0145 IR 18 56 15.0 +01 49 03           ~ 9 0
84 IRAS 18564+0145 IR 18 58 59.7 +01 49 15           ~ 4 0
85 IRAS 19012+0505 mul 19 03 43.5 +05 09 49           ~ 31 0
86 IRAS 19014+0451 IR 19 03 57.4 +04 56 18           ~ 4 0
87 IRAS 19023+0601 IR 19 04 46.0 +06 05 39           ~ 6 0
88 IRAS 19023+0545 IR 19 04 46.7 +05 50 23           ~ 4 0
89 IRAS 19027+0656 IR 19 05 11.4 +07 01 12           ~ 4 0
90 IRAS 19049+0712 IR 19 07 21.0 +07 17 25           ~ 7 0
91 IRAS 19062+0758 Cld 19 08 36.9 +08 03 16           ~ 4 0
92 IRAS 19062+0531 IR 19 08 42.5 +05 36 01           ~ 6 0
93 IRAS 19064+0539 * 19 08 56.5523093688 +05 44 56.149294740           ~ 3 0
94 IRAS 19072+0649 IR 19 09 40.2 +06 53 56           ~ 4 0
95 IRAS 19100+1528 IR 19 12 18.0115414464 +15 33 51.867347616           ~ 3 0
96 IRAS 19105+0852 IR 19 12 59.7 +08 57 19           ~ 4 0
97 GAL 045.6-00.5 SR? 19 16 10.0 +11 00 53           ~ 6 0
98 IRAS 19139+1045 IR 19 16 19.6 +10 50 34           ~ 4 0
99 IRAS 19156+1441 IR 19 17 55.9 +14 47 11           ~ 4 0
100 IRAS 19157+1319 IR 19 18 03.7 +13 24 44           ~ 4 0
101 IRAS 19172+1558 IR 19 19 31.8 +16 04 24           ~ 3 0
102 IRAS 19191+1733 IR 19 21 20.1 +17 39 42           ~ 3 0
103 IRAS 19193+1443 Cld 19 21 38.4 +14 49 44           ~ 4 0
104 IRAS 19205+1447 Cld 19 22 49.77216 +14 53 26.7612           ~ 7 0
105 IRAS 19207+1348 Cld 19 23 00.8 +13 54 29           ~ 8 0
106 IRAS 19207+1329 IR 19 23 01.4 +13 35 39           ~ 4 0
107 IRAS 19214+1556 IR 19 23 44.8 +16 02 38           ~ 4 0
108 IRAS 19221+1456 IR 19 24 24.9 +15 02 22           ~ 5 0
109 IRAS 19230+1851 IR 19 25 16.7 +18 57 10           ~ 3 0
110 IRAS 19233+1413 IR 19 25 37.6 +14 19 12           ~ 4 0
111 IRAS 19240+1907 IR 19 26 14.6 +19 13 57           ~ 3 0
112 IRAS 19247+1829 IR 19 26 57.0 +18 35 34           ~ 4 0
113 IRAS 19248+1730 IR 19 27 05.5 +17 36 40           ~ 4 0
114 IRAS 19255+1531 bub 19 27 43.5 +15 37 25           ~ 8 0
115 IRAS 19256+1705 mul 19 27 54.6 +17 11 58           ~ 4 0
116 IRAS 19260+1821 IR 19 28 18.0 +18 27 28           ~ 4 0
117 IRAS 19266+1926 IR 19 28 53.5 +19 33 13           ~ 5 0
118 IRAS 19295+1637 Cld 19 31 50.9 +16 43 29           ~ 9 0
119 IRAS 19315+2029 IR 19 33 44.7 +20 35 48           ~ 3 0
120 IRAS 19330+1956 IR 19 35 11.5 +20 03 18           ~ 5 0
121 IRAS 19340+2336 IR 19 36 07.4 +23 42 47           ~ 3 0
122 IRAS 19342+2235 IR 19 36 24.6 +22 42 21           ~ 3 0
123 IRAS 19352+2717 Cld 19 37 19.9 +27 24 07           ~ 3 0
124 IRAS 19355+2055 IR 19 37 46.2 +21 02 27           ~ 3 0
125 IRAS 19359+2746 IR 19 37 55.6 +27 53 34           ~ 3 0
126 IRAS 19370+2601 IR 19 39 06.6 +26 08 54           ~ 3 0
127 IRAS 19377+2229 IR 19 39 54.5 +22 36 08           ~ 3 0
128 IRAS 19429+2320 IR 19 45 04.6 +23 27 25           ~ 3 0
129 IRAS 19433+2420 * 19 45 27.3923587800 +24 27 28.846416888           ~ 3 0
130 IRAS 19440+2344 IR 19 46 07.3 +23 52 20           ~ 3 0
131 IRAS 19455+2433 IR 19 47 38.0684983392 +24 41 04.887652740           ~ 3 0
132 IRAS 19471+2532 IR 19 49 11.7 +25 40 08           ~ 3 0
133 IRAS 23504+6802 * 23 52 52.2707219136 +68 19 23.770615584           ~ 8 0

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