2016ApJ...818...95L

Query : 2016ApJ...818...95L

2016ApJ...818...95L - Astrophys. J., 818, 95 (2016/February-2)

Interactions of the infrared bubble N4 with its surroundings.

LIU H.-L., LI J.-Z., WU Y., YUAN J.-H., LIU T., DUBNER G., PARON S., ORTEGA M.E., MOLINARI S., HUANG M., ZAVAGNO A., SAMAL M.R., HUANG Y.-F. and ZHANG S.-J.

Abstract (from CDS):

The physical mechanisms that induce the transformation of a certain mass of gas in new stars are far from being well understood. Infrared bubbles associated with H ii regions have been considered to be good samples for investigating triggered star formation. In this paper we report on the investigation of the dust properties of the infrared bubble N4 around the H ii region G11.898+0.747, analyzing its interaction with its surroundings and star formation histories therein, with the aim of determining the possibility of star formation triggered by the expansion of the bubble. Using Herschel PACS and SPIRE images with a wide wavelength coverage, we reveal the dust properties over the entire bubble. Meanwhile, we are able to identify six dust clumps surrounding the bubble, with a mean size of 0.50 pc, temperature of about 22 K, mean column density of 1.7x1022/cm2, mean volume density of about 4.4x104/cm3, and a mean mass of 320 M☉. In addition, from PAH emission seen at 8 µm, free-free emission detected at 20 cm, and a probability density function in special regions, we could identify clear signatures of the influence of the H ii region on the surroundings. There are hints of star formation, though further investigation is required to demonstrate that N4 is the triggering source.

Abstract Copyright: ∼

Journal keyword(s): H ii regions - ISM: bubbles - ISM: individual: N4 - stars: formation - stars: massive

VizieR on-line data: <Available at CDS (J/ApJ/818/95): table5.dat table8.dat>

Simbad objects: 69

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Number of rows : 69
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 NAME Orion Bright Bar reg 05 35 22.30 -05 24 33.0           ~ 1004 0
3 GRS G308.60 +00.60 HII 13 39.9 -61 45           ~ 108 0
4 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3969 1
5 SH 2-3 HII 17 12.4 -38 28           ~ 234 1
6 NAME the Pipe Nebula DNe 17 30 -25.0           ~ 442 1
7 2MASS J18083199-1816407 Y*? 18 08 32.000 -18 16 40.72           ~ 1 0
8 2MASS J18083249-1816162 Y*? 18 08 32.4878694144 -18 16 16.303198944           ~ 1 0
9 2MASS J18083494-1817520 Y*? 18 08 34.9432695024 -18 17 52.083378132           ~ 1 0
10 2MASS J18083560-1818146 Y*? 18 08 35.6057706960 -18 18 14.833485144           ~ 1 0
11 2MASS J18083938-1818138 Y*? 18 08 39.389 -18 18 13.83           ~ 1 0
12 2MASS J18083970-1818413 Y*? 18 08 39.706 -18 18 41.31           ~ 1 0
13 2MASS J18084008-1819031 Y*? 18 08 40.080 -18 19 03.14           ~ 1 0
14 2MASS J18084164-1816003 Y*? 18 08 41.6385686472 -18 16 00.373652760           ~ 1 0
15 2MASS J18084206-1814578 Y*? 18 08 42.0654681024 -18 14 57.893418240           ~ 1 0
16 2MASS J18084226-1813285 Y*? 18 08 42.269 -18 13 28.59           ~ 1 0
17 2MASS J18084280-1819313 Y*? 18 08 42.803 -18 19 31.34           ~ 1 0
18 2MASS J18084347-1814439 Y*? 18 08 43.472 -18 14 43.96           ~ 1 0
19 2MASS J18084407-1814550 Y*? 18 08 44.079 -18 14 55.03           ~ 1 0
20 2MASS J18084419-1814035 Y*? 18 08 44.192 -18 14 03.50           ~ 1 0
21 2MASS J18084485-1814571 Y*? 18 08 44.851 -18 14 57.16           ~ 1 0
22 2MASS J18084600-1816150 Y*? 18 08 46.006 -18 16 15.09           ~ 1 0
23 2MASS J18084608-1818432 Y*? 18 08 46.087 -18 18 43.28           ~ 1 0
24 2MASS J18084757-1814141 Y*? 18 08 47.574 -18 14 14.16           ~ 1 0
25 2MASS J18084762-1814499 Y*? 18 08 47.623 -18 14 49.91           ~ 1 0
26 2MASS J18084771-1814411 Y*? 18 08 47.710 -18 14 41.14           ~ 1 0
27 2MASS J18084836-1813553 Y*? 18 08 48.360 -18 13 55.34           ~ 1 0
28 WISEA J180849.08-181441.8 Y*? 18 08 49.08 -18 14 41.8           ~ 1 0
29 2MASS J18084970-1813391 Y*? 18 08 49.7006978256 -18 13 39.292391892           ~ 1 0
30 2MASS J18085018-1818159 Y*? 18 08 50.189 -18 18 15.94           ~ 1 0
31 2MASS J18085079-1818368 Y*? 18 08 50.795 -18 18 36.83           ~ 1 0
32 2MASS J18085156-1818322 Y*? 18 08 51.5583357240 -18 18 32.244013476   11.93 11.34     ~ 1 0
33 IRAS 18059-1818 Y*? 18 08 51.7243442544 -18 18 46.762934760           ~ 4 0
34 2MASS J18085234-1817447 Y*? 18 08 52.343 -18 17 44.75           ~ 1 0
35 2MASS J18085256-1813555 Y*? 18 08 52.568 -18 13 55.55           ~ 1 0
36 [ABB2014] WISE G011.893+00.748 bub 18 08 52.6 -18 16 07           ~ 32 0
37 2MASS J18085297-1813353 Y*? 18 08 52.975 -18 13 35.36           ~ 1 0
38 2MASS J18085310-1817416 Y*? 18 08 53.1030498312 -18 17 41.698819104           ~ 1 0
39 2MASS J18085342-1811306 Y*? 18 08 53.429 -18 11 30.62           ~ 1 0
40 2MASS J18085366-1812071 Y*? 18 08 53.670 -18 12 07.15           ~ 1 0
41 [ABG85] 20 HII 18 08 53.9 -18 16 05           ~ 8 0
42 WISEA J180853.94-181422.4 Y*? 18 08 53.94 -18 14 22.4           ~ 1 0
43 WISEA J180854.47-181406.5 Y*? 18 08 54.47 -18 14 06.5           ~ 1 0
44 2MASS J18085472-1812306 Y*? 18 08 54.729 -18 12 30.65           ~ 1 0
45 WISEA J180854.87-181409.5 Y*? 18 08 54.87 -18 14 09.5           ~ 1 0
46 2MASS J18085576-1811354 Y*? 18 08 55.762 -18 11 35.45           ~ 1 0
47 2MASS J18085634-1815054 Y*? 18 08 56.344 -18 15 05.46           ~ 2 0
48 2MASS J18085662-1814192 Y*? 18 08 56.625 -18 14 19.25           ~ 1 0
49 WISEA J180857.00-181354.7 Y*? 18 08 57.00 -18 13 54.7           ~ 1 0
50 2MASS J18085748-1818540 Y*? 18 08 57.480 -18 18 54.06           ~ 1 0
51 TYC 6268-1783-1 * 18 08 58.0486909874 -18 15 06.541573007   12.40 11.48 11.213   ~ 2 0
52 2MASS J18085818-1818082 Y*? 18 08 58.185 -18 18 08.30           ~ 1 0
53 2MASS J18085877-1816297 Y*O 18 08 58.773 -18 16 29.71           ~ 6 0
54 2MASS J18085886-1818058 Y*? 18 08 58.870 -18 18 05.81           ~ 1 0
55 2MASS J18085944-1813329 Y*? 18 08 59.4461210448 -18 13 32.978669088           ~ 3 0
56 2MASS J18085946-1813152 Y*? 18 08 59.465 -18 13 15.29           ~ 2 0
57 2MASS J18085951-1818532 Y*? 18 08 59.512 -18 18 53.29           ~ 1 0
58 2MASS J18090026-1813476 Y*? 18 09 00.2698603560 -18 13 47.700822504           ~ 1 0
59 2MASS J18090030-1819215 Y*? 18 09 00.307 -18 19 21.58           ~ 1 0
60 2MASS J18090047-1819053 Y*? 18 09 00.474 -18 19 05.35           ~ 1 0
61 2MASS J18090292-1813162 Y*? 18 09 02.9253791904 -18 13 16.269693456           ~ 1 0
62 2MASS J18090472-1816374 Y*? 18 09 04.722 -18 16 37.48           ~ 1 0
63 2MASS J18090492-1818075 Y*? 18 09 04.927 -18 18 07.56           ~ 1 0
64 2MASS J18090550-1816227 Y*? 18 09 05.5029414984 -18 16 22.735348428           ~ 2 0
65 2MASS J18090626-1816402 Y*? 18 09 06.267 -18 16 40.26           ~ 1 0
66 2MASS J18090664-1818484 Y*? 18 09 06.6183884784 -18 18 48.667822380           ~ 1 0
67 2MASS J18090854-1817051 Y*? 18 09 08.549 -18 17 05.15           ~ 1 0
68 [ABB2014] WISE G018.253-00.298 bub 18 25 17.1 -13 09 56           ~ 25 0
69 NAME Aql Rift DNe 18 32 -01.0           ~ 355 1

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