2008ApJ...678..200C


Query : 2008ApJ...678..200C

2008ApJ...678..200C - Astrophys. J., 678, 200-218 (2008/May-1)

Young stellar objects in the Large Magellanic Cloud: N63 and N180 H II regions.

CAULET A., GRUENDL R.A. and CHU Y.-H.

Abstract (from CDS):

We used Spitzer infrared observations to find the young stars of two H II regions in the Large Magellanic Cloud, N63 and N180. The young stellar object (YSO) candidates were identified in each nebula by means of color-color, color-magnitude diagrams, and the shapes of their spectral energy distributions (SEDs). The most luminous YSOs are found near the ionization fronts within strong 8 µm emission clumps. Most YSOs, less luminous, are seen in projection inside the H II regions. HST images show several Class I stars that have emerged along the borders of the H II regions; other YSOs are embedded in cometary clouds. The most luminous YSO of N63 is connected to a string of pointlike sources. Its SED can be modeled by a central source of stellar mass M* between 7 and 11 M, with a circumstellar disk of outer radius Rd of ∼55 AU, and an envelope of moderate accretion rate, M{dot}env of ∼2x10–5 M/yr. N180 is experiencing a phase of star formation more intense than N63, attested by the properties of its most luminous YSO: M* of 25 M, Rdof ∼200 AU, and M{dot}envof ∼1.5x10–3 M/yr. The modes of triggered star formation in N63 and N180 appear similar to those seen in Galactic H II regions.

Abstract Copyright:

Journal keyword(s): ISM: H II Regions - Galaxies: Magellanic Clouds - Stars: Formation

VizieR on-line data: <Available at CDS (J/ApJ/678/200): table3.dat table5.dat table6.dat notes.dat>

Nomenclature: Table 3: [CGC2008] JHHMMSS.ss+DDMMSS.s N=18. Table 5: [CGC2008] N63 NN, [CGC2008] N63 NNC, N=29 among (Nos 8-50). Table 6: [CGC2008] N180 NN, [CGC2008] N180 NNC, N=38 among (Nos 9-45).

Simbad objects: 104

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Number of rows : 104
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 Tau-Aur Complex SFR 04 30 +25.0           ~ 1359 0
2 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 17478 0
3 LHA 120-N 51D HII 05 25 17.3 -67 22 47           ~ 114 0
4 NAME LMC 4 Supergiant Shell sh 05 31 33 -66 40.5           ~ 176 0
5 2MASS J05331859-6600401 C* 05 33 18.5909928072 -66 00 40.123717668       18.147   C-rich 8 0
6 [CGC2008] N63 16C Y*O 05 34 41.9628373608 -66 04 00.279296076           ~ 1 0
7 [GC2009] J053448.78-660857.2 Y*O 05 34 48.7767520680 -66 08 57.035140620           ~ 2 0
8 2MASS J05345247-6600439 Y*O 05 34 52.4848905336 -66 00 43.867598688           ~ 1 0
9 [CGC2008] N63 28C Y*O 05 34 56.15 -66 00 44.5           ~ 1 0
10 [CGC2008] N63 13C Y*O 05 34 56.71 -66 04 38.8           ~ 1 0
11 [CGC2008] N63 8C Y*O 05 35 02.87 -66 08 48.2           ~ 1 0
12 [CGC2008] N63 21C Y*O 05 35 07.26 -66 02 05.6           ~ 1 0
13 M 42 HII 05 35 17 -05 23.4           ~ 4083 0
14 [CGC2008] J053519.13-660020.8 G 05 35 19.13 -66 00 20.8           ~ 1 0
15 [CGC2008] N63 39 Y*O 05 35 19.940 -66 02 09.32           ~ 2 0
16 2MASS J05352327-6601558 Y*O 05 35 23.2613936376 -66 01 55.780758588           ~ 1 0
17 [CGC2008] N63 17C Y*O 05 35 26.38 -66 02 41.9           ~ 1 0
18 [CGC2008] J053526.84-660515.4 G 05 35 26.84 -66 05 15.4           ~ 1 0
19 [CGC2008] N63 32 Y*O 05 35 27.34 -66 03 32.9           ~ 1 0
20 [WSI2008] 885 Y*O 05 35 28.597 -66 02 25.83           ~ 2 0
21 2MASS J05353150-6600565 Y*O 05 35 31.4550011712 -66 00 56.464884756   17.424 17.062     ~ 2 0
22 NGC 2030 HII 05 35 33.6 -66 02 26           ~ 73 0
23 LH 83 As* 05 35 34 -66 03.0           ~ 41 1
24 [CGC2008] N63 14C Y*O 05 35 34.10 -66 04 24.1           ~ 1 0
25 [CGC2008] N63 46 Y*O 05 35 34.42 -66 04 10.2           ~ 1 0
26 [CGC2008] N63 35 Y*O 05 35 34.62 -66 02 59.7           ~ 2 0
27 [CGC2008] N63 23C Y*O 05 35 42.32 -66 01 55.1           ~ 2 0
28 SNR B0535-66.0 SNR 05 35 43.1 -66 01 59           ~ 176 1
29 [CGC2008] N63 18C Y*O 05 35 43.47 -66 02 23.2           ~ 1 0
30 [CGC2008] N63 26C Y*O 05 35 47.5290099312 -66 01 26.613045228           ~ 1 0
31 2MASS J05354798-6602504 Y*? 05 35 47.9812623168 -66 02 50.415971748 18.893 18.284 16.975   15.223 ~ 4 0
32 2MASS J05354934-6601335 Y*O 05 35 49.342 -66 01 33.55           ~ 4 0
33 [CGC2008] N63 31C Y*O 05 35 54.2294511432 -65 58 26.511866724           ~ 1 0
34 [CGC2008] N63 28 Y*O 05 36 00.62 -66 06 35.2           ~ 1 0
35 [CGC2008] N63 34 Y*O 05 36 01.31 -66 03 09.9           ~ 1 0
36 [CGC2008] N63 25C Y*O 05 36 10.81 -66 01 36.7           ~ 1 0
37 [CGC2008] N63 45 Y*O 05 36 12.28 -65 59 43.7           ~ 1 0
38 [CGC2008] N63 49 Y*O 05 36 21.40 -65 56 50.9           ~ 1 0
39 [CGC2008] N63 9C Y*O 05 36 30.7447740192 -66 08 07.548652176           ~ 1 0
40 [CGC2008] N63 50 Y*O 05 36 32.3455182480 -65 56 40.330971168           ~ 1 0
41 [CGC2008] N63 24 Y*O 05 36 48.114 -66 08 50.67           ~ 2 0
42 [CGC2008] N63 30C Y*O 05 36 52.44 -65 59 22.2           ~ 1 0
43 [RM85] 24 LP* 05 38 03.3962964384 -64 52 57.300034728     15.7 14.313   K5e 4 0
44 RHV 0538173-660651 LP* 05 38 21.1510688856 -66 05 18.677456088     20.52 14.964   C 10 0
45 [KDM2001] 5345 C* 05 38 23.5945057056 -66 09 00.188052912     17.23 15.056   C 9 0
46 2MASS J05383208-6615382 LP* 05 38 32.0819574024 -66 15 38.111670504     18.64 16.85   ~ 5 0
47 LHA 120-N 159 HII 05 39 46.650 -69 45 39.94           ~ 276 2
48 NAME LMC 2 Supergiant Shell sh 05 41 27 -69 22.4           ~ 191 0
49 2MASS J05452658-7014222 Mi* 05 45 26.5942877448 -70 14 22.180375752     21.25 18.191 17.919 ~ 11 0
50 2MASS J05455416-6955172 Mi* 05 45 54.1751514504 -69 55 17.001886944     20.87 18.185 16.883 ~ 10 0
51 MSX LMC 1464 Mi* 05 46 44.8161624000 -70 14 29.323963860         18.277 ~ 9 0
52 IRAS 05475-7004 Mi* 05 47 00.5487117118 -70 03 16.977255028     20.934 18.326 16.771 ~ 10 0
53 2MASS J05474076-6955177 Mi* 05 47 40.763 -69 55 17.73       17.093 18.093 ~ 6 0
54 2MASS J05480120-7002447 Y*O 05 48 01.2234439704 -70 02 44.619675144           ~ 1 0
55 [CGC2008] N180 38 Y*O 05 48 02.18 -69 58 46.8 18.643 19.213 18.824   18.437 ~ 2 0
56 2MASS J05481114-7000167 AB* 05 48 11.1759832296 -70 00 16.671747168           ~ 3 0
57 LHA 120-N 180C EmO 05 48 15.1 -70 02 03           ~ 13 0
58 [CGC2008] N180 42C Y*O 05 48 15.28 -70 01 09.9           ~ 1 0
59 2MASS J05481676-6959380 Y*O 05 48 16.7954675136 -69 59 38.019105744           ~ 1 0
60 2MASS J05481799-7003433 Mi* 05 48 17.997 -70 03 43.35         18.060 ~ 7 0
61 MSX LMC 1529 Y*O 05 48 18.16968 -70 01 09.0228           ~ 4 0
62 2MASS J05482622-7008502 LP* 05 48 26.227 -70 08 50.23           ~ 5 0
63 [CGC2008] N180 10C Y*O 05 48 28.72 -70 08 51.7           ~ 1 0
64 [CGC2008] N180 27C Y*O 05 48 32.94 -70 03 51.1           ~ 1 0
65 [CGC2008] N180 28C Y*O 05 48 34.14 -70 03 51.0           ~ 1 0
66 [CGC2008] N180 41C Y*O 05 48 37.94 -70 01 41.2           ~ 1 0
67 IRAS 05489-7002 Y*O 05 48 38.305 -70 02 08.04           ~ 4 0
68 [GC2009] J054839.05-700536.4 Y*O 05 48 39.05 -70 05 36.4           ~ 3 0
69 2MASS J05484133-7005363 Y*O 05 48 41.335 -70 05 36.35           ~ 3 0
70 [CGC2008] N180 13C Y*O 05 48 42.49 -70 08 20.0           ~ 1 0
71 LHA 120-N 180A EmO 05 48 44 -70 03.2           ~ 17 0
72 2MASS J05484435-7004003 Y*O 05 48 44.354 -70 04 00.35           ~ 4 0
73 2MASS J05484577-7005356 LP* 05 48 45.7534111752 -70 05 35.445082560       17.851   ~ 3 0
74 HD 270145 s*b 05 48 49.6513961040 -70 03 57.837376476 10.903 12.110 12.166     O6.5Iaf 48 1
75 [CGC2008] N180 33C Y*O 05 48 50.03 -70 03 28.9           ~ 1 0
76 [CGC2008] N180 40C Y*O 05 48 50.56 -70 01 41.9           ~ 1 0
77 2MASS J05485218-7005415 Y*O 05 48 52.186 -70 05 41.56           ~ 1 0
78 [CGC2008] N180 12C Y*O 05 48 52.40 -70 08 23.3           ~ 1 0
79 2MASS J05485365-7003201 Y*O 05 48 53.658 -70 03 20.14           ~ 3 0
80 NGC 2122 As* 05 48 55 -70 04.1     10.43     ~ 92 0
81 2MASS J05485520-7005106 LP* 05 48 55.1748799872 -70 05 10.281408540 18.034 18.677 17.828 17.368 17.044 ~ 8 0
82 [CGC2008] N180 19C Y*O 05 48 56.3367803496 -70 05 29.739663456           ~ 1 0
83 [CGC2008] N180 30C Y*O 05 48 57.66 -70 03 42.8           ~ 1 0
84 [CGC2008] N180 29C Y*O 05 48 58.80 -70 03 44.8           ~ 1 0
85 2MASS J05490074-7013354 Mi* 05 49 00.7358282320 -70 13 35.423848522     20.276 16.198 16.343 ~ 8 0
86 [CGC2008] N180 24C Y*O 05 49 00.9143953152 -70 04 22.381204872           ~ 1 0
87 [GC2009] J054905.93-700304.8 Y*O 05 49 05.93 -70 03 04.8           ~ 2 0
88 2MASS J05490675-7004199 Y*O 05 49 06.7412495088 -70 04 19.876113192           ~ 1 0
89 [CGC2008] J054907.71-695908.9 G 05 49 07.71 -69 59 08.9           ~ 1 0
90 [CGC2008] N180 21C Y*O 05 49 10.98 -70 04 47.5           ~ 1 0
91 [CGC2008] N180 20 Y*O 05 49 11.86 -70 06 59.3           ~ 1 0
92 LHA 120-N 180 HII 05 49 13 -70 06.4           ~ 35 0
93 [GC2009] J054914.04-701119.5 Y*O 05 49 14.04 -70 11 19.5           ~ 2 0
94 [CGC2008] N180 38C Y*O 05 49 14.37 -70 02 37.9           ~ 1 0
95 [CGC2008] N180 31C Y*O 05 49 16.78 -70 03 42.7           ~ 1 0
96 [CGC2008] N180 44C Y*O 05 49 20.24 -70 00 13.2           ~ 1 0
97 2MASS J05494566-7012441 Mi* 05 49 45.661 -70 12 44.18     18.151 16.661 16.363 ~ 8 0
98 [CGC2008] N180 32 Y*O 05 50 04.4438921568 -70 02 01.866435216           ~ 1 0
99 OGLE LMC191.8 6748 Y*O 05 50 07.6122512304 -70 05 26.285176248     20.72   19.92 ~ 2 0
100 [CGC2008] N180 9C Y*O 05 50 12.62 -70 10 41.1           ~ 1 0
101 2MASS J05502959-7010465 AGN 05 50 29.591 -70 10 46.57     21.07   19.70 ~ 2 0
102 M 16 OpC 18 18 45.1 -13 47 31           ~ 1029 1
103 SH 2-104 HII 20 17 52.5 +36 49 24           ~ 97 0
104 [L72] LH 117-118 * ~ ~           O4:III(f) 2 0

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