2013AJ....146...64Z


Query : 2013AJ....146...64Z

2013AJ....146...64Z - Astron. J., 146, 64 (2013/September-0)

Open clusters in the Milky Way outer disk: newly discovered and unstudied clusters in the Spitzer GLIMPSE-360, CYG-X, and SMOG surveys.

ZASOWSKI G., BEATON R.L., HAMM K.K., MAJEWSKI S.R., BABLER B., BENJAMIN R.A., CHURCHWELL E., MEADE M., PATTERSON R.J., WATSON C. and WHITNEY B.A.

Abstract (from CDS):

Open stellar clusters are extremely valuable probes of Galactic structure, star formation, kinematics, and chemical abundance patterns. Near-infrared (NIR) data have enabled the detection of hundreds of clusters hidden from optical surveys, and mid-infrared (MIR) data are poised to offer an even clearer view into the most heavily obscured parts of the Milky Way. We use new MIR images from the Spitzer GLIMPSE-360, Cyg-X, and SMOG surveys to visually identify a large number of open cluster candidates in the outer disk of the Milky Way (65° < l < 265°). Using NIR color-magnitude diagrams, stellar isochrones, and stellar reddening estimates, we derive cluster parameters (metallicity, distance, reddening) for those objects without previous identification and/or parameters in the literature. In total, we present coordinates and sizes of 20 previously unknown open cluster candidates; for 7 of these we also present metallicity, distance, and reddening values. In addition, we provide the first estimates of these values for nine clusters that had been previously cataloged. We compare our cluster sizes and other derived parameters to those in the open cluster catalog of Dias et al. and find strong similarities except for a higher mean reddening for our objects, which signifies our increased detection sensitivity in regions of high extinction. The results of this cluster search and analysis demonstrate the ability of MIR imaging and photometry to augment significantly the current census of open clusters in the Galaxy.

Abstract Copyright:

Journal keyword(s): Galaxy: stellar content - infrared: stars - open clusters and associations: general

Nomenclature: Tables 1-2: [ZBH2013] GLM-CYGX NN (Nos 14, 16), [ZBH2013] GLM-G360 NNN N=18 among (Nos 9-174.

Simbad objects: 39

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Number of rows : 39
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 [FSR2007] 0494 OpC 00 25 40 +63 45.2           ~ 20 0
2 HD 17505 ** 02 51 07.97514 +60 25 03.8720 6.83 7.47 7.07     O6.5III((f))n+O8V 188 0
3 IC 1848 OpC 02 51 25 +60 25.1   6.87 6.5     ~ 471 2
4 SAI 24 OpC 02 59 25.4 +60 33 58           ~ 16 0
5 NAME Per Arm PoG 03 30 +45.0           ~ 1407 0
6 [FSR2007] 0665 Cl* 04 05 12.0 +51 31 20           ~ 6 0
7 [ZBH2013] GLM-G360 9 Cl* 04 56 31 +01 30.7           ~ 1 0
8 [ZBH2013] GLM-CYGX 14 Cl* 05 15 58 +03 40.4           ~ 1 0
9 [ZBH2013] GLM-CYGX 16 Cl* 05 19 30 -00 55.6           ~ 1 0
10 NGC 1857 OpC 05 20 07 +39 20.2   8.08 7.0     ~ 39 0
11 Cl Czernik 20 OpC 05 20 31 +39 32.7           ~ 27 0
12 [FSR2007] 0777 OpC 05 27 31.0 +34 44 01           ~ 15 0
13 [ZBH2013] GLM-G360 18 Cl* 05 47 47 +00 37.8           ~ 1 0
14 [FSR2007] 0979 OpC 06 31 18.0 +11 04 51           ~ 14 0
15 [ZBH2013] GLM-G360 90 Cl* 07 30 32 +01 14.4           ~ 1 0
16 [ZBH2013] GLM-G360 105 Cl* 07 48 00 +02 23.5           ~ 1 0
17 NAME VELA MOL RIDGE MoC 08 53 -45.0           ~ 141 0
18 [ZBH2013] GLM-G360 123 Cl* 08 54 33 +00 08.3           ~ 1 0
19 [ZBH2013] GLM-G360 125 Cl* 08 59 11 +01 18.7           ~ 1 0
20 [ZBH2013] GLM-G360 174 Cl* 09 07 18 +01 03.9           ~ 1 0
21 [ZBH2013] GLM-G360 128 Cl* 09 08 48 +00 53.9           ~ 1 0
22 [ZBH2013] GLM-G360 129 Cl* 09 09 39 +01 16.9           ~ 1 0
23 [ZBH2013] GLM-G360 167 Cl* 12 42 06 +00 52.2           ~ 1 0
24 [ZBH2013] GLM-G360 169 Cl* 12 57 49 +00 02.1           ~ 1 0
25 [ZBH2013] GLM-G360 46 Cl* 13 58 26 +00 04.6           ~ 1 0
26 [ZBH2013] GLM-G360 49 Cl* 14 11 36 -00 26.3           ~ 1 0
27 [ZBH2013] GLM-G360 50 Cl* 14 11 44 -00 35.7           ~ 1 0
28 [ZBH2013] GLM-G360 58 Cl* 14 58 28 -00 07.5           ~ 1 0
29 [ZBH2013] GLM-G360 60 Cl* 15 09 19 -02 01.7           ~ 1 0
30 [ZBH2013] GLM-G360 63 Cl* 15 11 00 -01 54.3           ~ 1 0
31 [ZBH2013] GLM-G360 75 Cl* 16 32 31 -01 12.4           ~ 1 0
32 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 13192 0
33 GB6 B2010+3635 Rad 20 12 11.10 +36 44 05.0           ~ 1 0
34 IRAS 20103+3633 HII 20 12 13.9 +36 42 59           ~ 13 0
35 NAME Cyg Complex reg 20 32 +45.0           ~ 565 0
36 [FSR2007] 0442 OpC 23 30 02.0 +63 28 55           ~ 14 0
37 NAME Majaess 225 OpC 23 39 44 +61 55.8           ~ 8 0
38 LBN 114.55+00.22 HII 23 39.8 +61 56           ~ 36 0
39 C 2353+642 OpC 23 56.3 +64 33           ~ 9 0

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2022.10.02-23:48:51

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