J/A+A/447/921 Galactic Open Cluster Candidates (Kronberger+, 2006)
New Galactic Open Cluster Candidates from DSS and 2MASS Imagery.
Kronberger M., Teutsch P., Alessi B., Steine M., Ferrero L., Graczewski K.,
Juchert M., Patchick D., Riddle D., Saloranta J., Schoenball M., Watson C.
<Astron. Astrophys. 447, 921 (2006)>
=2006A&A...447..921K 2006A&A...447..921K
ADC_Keywords: Clusters, open ; Planetary nebulae ; Morphology
Keywords: Galaxy: open clusters and associations: general - HII regions -
reflection nebulae - planetary nebulae: general
Abstract:
An inspection of DSS and 2MASS images of selected Milky Way regions
led to the discovery of 66 stellar groupings whose morphologies,
color-magnitude diagrams and stellar density distributions suggest
that these objects are possible open clusters that are not yet listed
in any catalogue. For 24 of these, which we consider to be the most
likely candidates, we provide extensive descriptions on the basis of
2MASS photometry and their visual impression on DSS and 2MASS. Of those
cluster candidates, 9 have fundamental parameters determined by
fitting the color-magnitude diagrams with solar metallicity Padova
isochrones. Additional 10 cluster candidates have distance moduli
and reddenings derived from K magnitudes and (J-K) color indices of
helium-burning red clump stars. As an addendum, we provide a list of a
number of apparently yet unknown galactic and extragalactic objects
which were also discovered during the survey.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 108 240 Isochrone-fitted open cluster candidates (a),
Open cluster candidates with RCs (b) or without
fundamental parameters (c), list of additional (d)
and suspected (e) open cluster candidates.
table3.dat 82 23 List of galactic and extragalactic objects
table4a.dat 83 111 List of additional galactic nebulae
table4b.dat 82 30 List of additional extragalactic objects
notes.dat 80 458 Individual notes
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See also:
II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1 A1 --- Cat [abcde] Category of objects (1)
3- 5 A3 --- --- [DSH]
7- 19 A13 --- DSH DSH designation (JHHMM.m+DDMMA)
20 A1 --- n_DSH [*] indicates a note in notes.dat
22- 40 A19 --- Name Discoverer identification name
42- 43 I2 h RAh Right ascension (J2000)
45- 46 I2 min RAm Right ascension (J2000)
48- 51 F4.1 s RAs Right ascension (J2000)
53 A1 --- DE- Declination sign (J2000)
54- 55 I2 deg DEd Declination (J2000)
57- 58 I2 arcmin DEm Declination (J2000)
60- 61 I2 arcsec DEs Declination (J2000)
63- 66 F4.2 arcmin Dvis Visual diameter
67- 70 F4.2 mag E(B-V) ? Reddening (a and b only)
72- 75 F4.2 mag e_E(B-V) ? rms uncertainty on E(B-V)
77- 81 F5.2 mag (m-M)0 ? Distance modulus (a and b only)
83- 86 F4.2 mag e_(m-M)0 ? rms uncertainty on distance modulus
88- 92 F5.2 kpc Dist ? Distance (a and b only)
93- 95 F3.1 kpc e_Dist ? rms uncertainty on distance
97 A1 --- l_logt [<] upper limit flag
98-101 F4.2 [yr] logt ? age (a only)
103-106 F4.2 [yr] e_logt ? rms uncertainty on age
108 A1 --- Note [ab] Note (2)
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Note (1): Category of cluster as follows:
a = Isochrone-fitted open cluster candidates, 9 stars
b = Open cluster candidates with He-burning Red Clump (RCs), 10 stars
c = Open cluster candidates without fundamental parameters, 5 stars
d = Additional open cluster candidates, 42 stars
e = List of suspected open cluster candidates, 174 stars, classified
as Cl* (Cluster of Stars) in Simbad
Note (2): Note as follows:
a = solution excludes giant stars
b = solution includes giant stars
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Byte-by-byte Description of file: table3.dat table4[ab].dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- --- [DSH]
5- 17 A13 --- DSH DSH designation (JHHMM.m+DDMM)
18 A1 --- n_DSH [*] indicates a note in notes.dat
20- 46 A27 --- Name Discoverer identification name
47- 49 A3 --- ObjType Object type (SIMBAD-format) (1)
51- 52 I2 h RAh Right ascension (J2000)
54- 55 I2 min RAm Right ascension (J2000)
57- 60 F4.1 s RAs Right ascension (J2000)
62 A1 --- DE- Declination sign
63- 64 I2 deg DEd Declination (J2000)
66- 67 I2 arcmin DEm Declination (J2000)
69- 70 I2 arcsec DEs Declination (J2000)
72- 76 F5.2 arcmin Dmaj Major axis
77 A1 --- u_Dmaj Uncertainty flag on Dmaj
79- 82 F4.2 arcmin dmin Minor axis
83 A1 --- u_dmin Uncertainty flag on dmin
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Note (1): Object type (SIMBAD-format) as follows:
PN = Planetary Nebula
PN? = Possible Planetary Nebula
BNe = Bright Nebula
G = Galaxy
Neb = Nebula of unknown nature
BNe = Bright Nebula
HII = HII (ionized) region
RNe = Reflection Nebula
CGb = Cometary Globule
DNe = Dark Nebula
ClG = Cluster of Galaxies
GrG = Group of Galaxies
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Byte-by-byte Description of file: notes.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- --- [DSH]
5- 17 A13 --- DSH DSH designation
19- 80 A62 --- Note Text of the note
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Acknowledgements: Philipp Harald Teutsch, Philipp.Teutsch(at)uibk.ac.at
(End) Patricia Vannier [CDS] 20-Oct-2005