J/other/NewA/34.84 New Galactic embedded cluster candidates (Camargo+, 2015)
New Galactic embedded clusters and candidates from a WISE Survey.
Camargo D., Bica E., Bonatto C.
<New Astron., 34, 84-97 (2015)>
=2015NewA...34...84C 2015NewA...34...84C
ADC_Keywords: Milky Way ; Clusters, open ; Associations, stellar ; Morphology
Keywords: open clusters and associations
Abstract:
We carried out a search for new infrared star clusters, stellar groups
and candidates using WISE images, which are very sensitive to dust
emission nebulae. We report the discovery of 437 embedded clusters and
stellar groups that show a variety of structures, both in the stellar
and nebular components. Pairs or small groupings of clusters are
observed, suggesting multiple generations at the early formation
stages. The resulting catalogue provides Galactic and equatorial
coordinates, together with angular sizes for all objects. The nature
of a representative test sub-sample of 14 clusters is investigated in
detail by means of 2MASS photometry. The colour magnitude diagrams and
radial density distributions characterise them as stellar clusters.
The 437 new objects were found in the ranges 145°<.l≤290° and
-25°≤b≤20°, and they appear to be a major object source for
future studies of star cluster formation and their early evolution.
WISE is a powerful tool to further probe for very young clusters
throughout the disk.
Description:
We searched for new clusters, stellar groups, and candidates in the
WISE3 (Wright et al., 2010AJ....140.1868W 2010AJ....140.1868W, Cat. II/311) image atlas.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 108 437 The new list of star clusters or candidates
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See also:
II/311 : WISE All-Sky Data Release (Cutri+ 2012)
V/112 : Catalog of Star-Forming Regions in the Galaxy (Avedisova 2002)
J/A+A/447/921 : Galactic Open Cluster Candidates (Kronberger+, 2006)
J/A+A/532/A131 : New Galactic star clusters in VVV survey (Borissova+, 2011)
J/A+A/542/A3 : Stellar clusters from UKIDSS GPS (Solin+, 2012)
J/A+A/562/A54 : Galactic open clusters in RAVE (Conrad+, 2014)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- --- [Camargo]
9- 11 I3 --- Camargo [1/437] Target sequential number
13- 19 F7.3 deg GLON Galactic longitude
21- 26 F6.2 deg GLAT Galactic latitude
28- 29 I2 h RAh Right ascension (J2000)
31- 32 I2 min RAm Right ascension (J2000)
34- 35 I2 s RAs Right ascension (J2000)
37 A1 --- DE- Declination sign (J2000)
38- 39 I2 deg DEd Declination (J2000)
41- 42 I2 arcmin DEm Declination (J2000)
44- 45 I2 arcsec DEs Declination (J2000)
47- 50 F4.1 arcmin Size1 Cluster size (major)
51 A1 --- --- [x]
52- 55 F4.1 arcmin Size2 Cluster size (minor)
57- 59 A3 --- Type Cluster type (1)
61 A1 --- Aved [y/n] Cross-identifications with Avedisova
(2002ARep...46..193A 2002ARep...46..193A, Cat. V/112) SFRs or
candidates within 5' of the central coordinates
63-108 A46 --- Com Comments
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Note (1): Type as follows:
OC = open cluster
OCC = open cluster candidate
EC = embedded cluster
ECC = embedded cluster candidate
EGr = stellar group
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 05-Jun-2015