J/A+A/542/A3 Stellar clusters from UKIDSS Galactic Plane Survey (Solin+, 2012)
Mining the UKIDSS Galactic Plane Survey: star formation and embedded clusters.
Solin O., Ukkonen E., Haikala L.
<Astron. Astrophys., 542, A3-3 (2012)>
=2012A&A...542A...3S 2012A&A...542A...3S
ADC_Keywords: Clusters, open ; Associations, stellar ; Surveys ;
Infrared sources
Keywords: open clusters and associations: general - methods: statistical -
catalogs - surveys - infrared: stars
Abstract:
Data mining techniques must be developed and applied to analyse the
large public data bases containing hundreds to thousands of millions
entries.
We develop methods for locating previously unknown stellar clusters
from the UKIDSS Galactic Plane Survey (GPS) catalogue data.
Description:
The cluster candidates are computationally searched from pre-filtered
catalogue data using a method that fits a mixture model of Gaussian
densities and background noise using the expectation maximization
algorithm. The catalogue data contains a significant number of false
sources clustered around bright stars. A large fraction of these
artefacts were automatically filtered out before or during the cluster
search.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 98 137 List of cluster candidates
table2.dat 100 30 List of location of star formation candidates
that cannot be verified as clusters
table3.dat 112 18 References
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See also:
II/310 : UKIDSS-DR7 Large Area Survey (Lawrence+ 2011)
II/314 : UKIDSS-DR8 LAS, GCS and DXS Surveys (Lawrence+ 2012)
II/316 : UKIDSS-DR6 Galactic Plane Survey (Lucas+ 2012)
J/MNRAS/394/857 : UKIDSS-2MASS proper motion survey (Deacon+, 2009)
Byte-by-byte Description of file: table1.dat table2.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Seq Sequential number, within the table
5- 19 A15 --- Name Name (GLLL.lll+B.bbb)
20- 26 F7.3 deg GLON Galactic longitude
28- 33 F6.3 deg GLAT Galactic latitude
35- 36 I2 h RAh Right ascension (J2000)
38- 39 I2 min RAm Right ascension (J2000)
41- 42 I2 s RAs Right ascension (J2000)
44 A1 --- DE- Declination sign (J2000)
45- 46 I2 deg DEd Declination (J2000)
48- 49 I2 arcmin DEm Declination (J2000)
51- 52 I2 arcsec DEs Declination (J2000)
54- 85 A32 ---- Env Associated sources (1)
87-100 A14 --- Ref References, in table3.dat file
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Note (1): Source classification from SIMBAD as follows:
IRDC = infrared dark cloud
of? = outflow candidate
bub = bubble
Mas = maser
smm = sub-millimetre source
mm = millimetre source
2MASX = 2MASS extended source
RNe = reflection nebula
DNe = dark nebula
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Ref Reference number
4- 22 A19 --- BibCode BibCode
24- 43 A20 --- Aut Author's name
45-112 A68 --- Desc Description
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 31-Jul-2012