2010ApJ...712..797B

Query : 2010ApJ...712..797B

2010ApJ...712..797B - Astrophys. J., 712, 797-812 (2010/April-1)

Young stellar objects and triggered star formation in the Vulpecula OB association.

BILLOT N., NORIEGA-CRESPO A., CAREY S., GUIEU S., SHENOY S., PALADINI R. and LATTER W.

Abstract (from CDS):

The Vulpecula OB association, Vul OB1, is a region of active star formation located in the Galactic plane at 2.3 kpc from the Sun. Previous studies suggest that sequential star formation is propagating along this 100 pc long molecular complex. In this paper, we use Spitzer MIPSGAL and GLIMPSE data to reconstruct the star formation history of Vul OB1, and search for signatures of past triggering events. We make a census of young stellar objects (YSOs) in Vul OB1 based on IR color and magnitude criteria, and we rely on the properties and nature of these YSOs to trace recent episodes of massive star formation. We find 856 YSO candidates, and show that the evolutionary stage of the YSO population in Vul OB1 is rather homogeneous–ruling out the scenario of propagating star formation. We estimate the current star formation efficiency to be ∼8%. We also report the discovery of a dozen pillar-like structures, which are confirmed to be sites of small scale triggered star formation.

Abstract Copyright: ∼

Journal keyword(s): H II regions - infrared: ISM - infrared: stars - stars: formation - stars: pre-main sequence

VizieR on-line data: <Available at CDS (J/ApJ/712/797): table2.dat table3.dat table5.dat>

Nomenclature: Tables 3-4: [BNC2010] VulPNN (Nos 1-14).

Status at CDS : All or part of tables of objects could be ingested in SIMBAD with priority 2.

Simbad objects: 56

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Number of rows : 56
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 IC 1848 OpC 02 51 19.4 +60 25 32   6.87 6.5     ~ 522 2
2 NGC 1333 OpC 03 29 09.2 +31 20 59           ~ 1575 1
3 NAME Per Arm PoG 03 30 +45.0           ~ 1672 0
4 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
5 NAME Ori Trapezium OpC 05 35 16.5 -05 23 14           ~ 1708 1
6 NAME Maddalena Cloud MoC 06 48.1 -03 52           ~ 100 0
7 GRS G308.60 +00.60 HII 13 39.9 -61 45           ~ 108 0
8 NAME NOAO Deep Wide Field reg 14 32 05.75 +34 16 47.5           ~ 430 0
9 IC 1127 SyG 15 34 57.22396 +23 30 11.6084   14.76 13.88     ~ 3090 4
10 M 16 OpC 18 18 45.1 -13 47 31           ~ 1084 1
11 NAME Serpens Cloud SFR 18 29 49 +01 14.8           ~ 1195 1
12 LDN 792 DNe 19 36.8 +25 34           ~ 5 0
13 SPICY 105419 Y*O 19 38 42.009 +23 04 14.44           ~ 3 0
14 SPICY 105785 Y*? 19 41 03.278 +24 01 12.99           ~ 2 0
15 NGC 6820 GNe 19 42 27.930 +23 05 14.75       14.56   ~ 50 0
16 SSTGLMC G059.7319+00.2144 G 19 42 30.5 +23 45 52           ~ 1 0
17 IRAS 19404+2335 Y*? 19 42 32.400 +23 42 54.59           ~ 4 0
18 SNR G059.5+00.1 SNR 19 42.6 +23 35           ~ 30 0
19 2MASS J19424611+2255536 Y*? 19 42 46.114 +22 55 53.67           ~ 3 0
20 2MASS J19430628+2355478 Y*? 19 43 06.28680 +23 55 47.8632           ~ 2 0
21 SSTGLMC G059.7973+00.0750 Y*O 19 43 10.77 +23 45 07.8           ~ 2 0
22 MSX6C G059.7831+00.0648 Y*O 19 43 11.2464 +23 44 03.270           ~ 159 0
23 NGC 6823 OpC 19 43 11.3 +23 18 32   7.71 7.1     ~ 279 2
24 IRAS 19410+2336 SFR 19 43 11.5 +23 44 06           ~ 160 0
25 LBN 059.38-00.15 HII 19 43 12 +23 15.0           ~ 25 1
26 [BNC2010] VulP6 PoC 19 43.3 +24 06           ~ 1 0
27 2MASS J19432849+2313470 Y*O 19 43 28.49400 +23 13 47.0712           ~ 3 0
28 SPICY 106267 Y*? 19 43 31.061 +23 57 32.92           ~ 2 0
29 [BNC2010] VulP14 PoC 19 43.5 +23 21           ~ 1 0
30 [BNC2010] VulP12 PoC 19 43.6 +23 28           ~ 1 0
31 [BNC2010] VulP5 PoC 19 43.6 +23 59           ~ 1 0
32 [BNC2010] VulP13 PoC 19 43.7 +23 22           ~ 1 0
33 2MASS J19434910+2328567 Y*O 19 43 49.100 +23 28 56.79           ~ 3 0
34 [BNC2010] VulP7 PoC 19 43.9 +24 20           ~ 1 0
35 Ass Vul OB 1 As* 19 44.0 +24 13           ~ 100 0
36 SH 2-88 A HII 19 44.5 +25 48           ~ 9 0
37 [BNC2010] VulP4 PoC 19 44.6 +23 35           ~ 1 0
38 [EPH2001] 59.7-0.4+44 sh 19 45 +23.4           ~ 2 0
39 [BNC2010] VulP3 PoC 19 45.0 +23 42           ~ 1 0
40 [BNC2010] VulP8 PoC 19 45.0 +24 47           ~ 1 0
41 [BNC2010] VulP2 PoC 19 45.3 +23 44           ~ 1 0
42 HD 186745 sg* 19 45 24.3491996232 +23 56 34.374919992 8.00 7.96 7.03     B8Ia 108 0
43 [BNC2010] VulP1 PoC 19 45.4 +23 53           ~ 2 0
44 HD 338916 Em* 19 45 42.1151605392 +25 21 16.409831436 10.36 10.70 10.17     O7.5Vz 56 0
45 [BNC2010] VulP11 PoC 19 46.1 +23 50           ~ 1 0
46 GSH 061+00+51 HI 19 46 +25.           ~ 4 0
47 SSTGLMC G059.6291-00.8301 G 19 46 13.9 +23 09 14           ~ 1 0
48 SSTGLMC G060.9219-00.1041 G 19 46 19.5 +24 38 11           ~ 1 0
49 SH 2-87 bub 19 46 20.69 +24 35 15.4           ~ 161 2
50 LBN 061.50+00.29 HII 19 46 45.7 +25 12 56           ~ 69 0
51 SH 2-88 B HII 19 46 48.2 +25 12 21           ~ 159 2
52 [BNC2010] VulP10 PoC 19 48.0 +24 14           ~ 1 0
53 [BNC2010] VulP9 PoC 19 48.0 +24 37           ~ 1 0
54 SSTGLMC G061.1282-00.7549 G 19 49 15.3 +24 29 09           ~ 1 0
55 SSTGLMC G061.6453-00.7439 G 19 50 22.2 +24 56 13           ~ 1 0
56 NAME Vulpecula Region reg ~ ~           ~ 30 0

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