J/AJ/166/263 UBV & Gaia DR3 photometry of King 6 and NGC 1605 (Gokmen+, 2023)
CCD UBV and Gaia DR3 Analyses of the Open Clusters King 6 and NGC 1605.
Gokmen S., Eker Z., Yontan T., Bilir S., Ak T., Ak S., Banks T.,
Sarajedini A.
<Astron. J., 166, 263 (2023)>
=2023AJ....166..263G 2023AJ....166..263G
ADC_Keywords: Clusters, open; Photometry, UBV; Proper motions;
Parallaxes, trigonometric
Keywords: Open star clusters ; Stellar kinematics ; Hertzsprung Russell
diagram
Abstract:
A detailed analysis of ground-based CCD UBV photometry and space-based
Gaia Data Release 3 (DR3) data for the open clusters King-6 and
NGC-1605 was performed. Using the pyUPMASK algorithm on Gaia
astrometric data to estimate cluster membership probabilities, we have
identified 112 stars in King 6 and 160 stars in NGC-1605 as the
statistically most likely members of each cluster. We calculated
reddening and metallicity separately using UBV two-color diagrams to
estimate parameter values via independent methods. The color excess
E(B-V) and photometric metallicity [Fe/H] for King-6 are
0.515±0.030mag and 0.02±0.20dex, respectively. For NGC-1605,
they are 0.840±0.054mag and 0.01±0.20dex, respectively. With
reddening and metallicity kept constant, we have estimated the
distances and cluster ages by fitting PARSEC isochrones to
color-magnitude diagrams based on the Gaia and UBV data. The
photometric distances are 723±34pc for King-6 and 3054±243pc
for NGC-1605. The cluster ages are 200±20Myr and 400±50 Myr
for King-6 and NGC-1605, respectively. The mass function slopes were
found to be 1.29±0.18 and 1.63±0.36 for King-6 and NGC-1605,
respectively. These values are in good agreement with the value of
Salpeter. The relaxation times were estimated as 5.8Myr for King-6
and60 Myr for NGC-1605. These indicate that both clusters are
dynamically relaxed since these times are less than the estimated
cluster ages. A Galactic orbit analysis shows that both clusters
formed outside the solar circle and are members of the young thin-disk
population.
Description:
Broadband UBV CCD photometric observations of the two clusters were
performed using the f/10 Ritchey-Chretien focus of the 1m T100
telescope. The T100 is installed at the TUBITAK National Observatory
(TUG) in Turkey. The CCD is a back-illuminated device with 4kx4k
pixels.
Objects:
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RA (2000) DE Designation(s)
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03 27 55.68 +56 26 38.4 King 6 = C 0324+562
04 34 58.80 +45 16 08.4 NGC 1605 = C 0431+451
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table5.dat 154 3358 Catalogues for King 6 and NGC 1605
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See also:
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
I/350 : Gaia EDR3 (Gaia Collaboration, 2020)
V/164 : LAMOST DR5 catalogs (Luo+, 2019)
J/A+AS/109/375 : Blue stragglers in open clusters (Ahumada+, 1995)
J/A+AS/133/387 : NGC 1817 and NGC 1807 proper motions (Balaguer-Nunnez+ 1998)
J/AJ/115/592 : VI photometry of NGC 2157 (Fischer+, 1998)
J/A+A/329/101 : Masses of Pleiades members (Raboud+ 1998)
J/A+AS/141/491 : Chemical composition of halo and disk stars (Nissen+, 2000)
J/A+A/438/1163 : Catalogue of Open Cluster Data (COCD) (Kharchenko+, 2005)
J/AJ/131/1184 : Recalibration of optical photometry (Maiz-Apellaniz+, 2006)
J/AJ/137/4186 : UBVRI standards around celestial equator (Landolt, 2009)
J/AJ/141/92 : BVI photometry of 10 distant open clusters (Janes+, 2011)
J/A+A/543/A156 : Milky Way global survey of star clusters (Kharchenko+, 2012)
J/ApJ/764/73 : HST VI photometry of HD 97950 cluster members (Pang+, 2013)
J/MNRAS/430/3350 : Proper motions and membership in NGC 3766 (Yadav+, 2013)
J/AJ/147/139 : UBVRI CCD photo open clusters. II. NGC 6866 (Janes+, 2014)
J/A+A/563/A45 : Pleiades cluster membership probabilities (Sarro+, 2014)
J/MNRAS/453/1095 : NGC 6866 UBVRI photometry (Bostanci+, 2015)
J/other/ApSS/355.267 : NGC 6811 CCD UBVRI photometry (Yontan+, 2015)
J/other/ApSS/361.126 : NGC 6819 CCD UBV photometry (Ak+, 2016)
J/other/ASpR/58.1900 : NGC 225 CCD UBV photometry (Bilir+, 2016)
J/AJ/153/99 : Galactic outer disk; a field toward Tombaugh 1 (Carraro+, 2017)
J/other/AstBu/72.257 : Homogeneous Cat of Open Cluster Param. (Loktin+, 2017)
J/MNRAS/470/3937 : 1876 open clusters multimembership catalog (Sampedro+, 2017)
J/A+A/618/A93 : Gaia DR2 open clusters in Milky Way (Cantat-Gaudin+, 2018)
J/MNRAS/479/5491 : Absolute parameters of 509 main-sequence stars (Eker+, 2018)
J/A+A/619/A155 : Open cluster kinematics with Gaia DR2 (Soubiran+, 2018)
J/A+A/623/A108 : Age of 269 GDR2 open clusters (Bossini+, 2019)
J/ApJS/245/32 : Newly identified star clusters in Gaia DR2 (Liu+, 2019)
J/A+A/625/A115 : Ruprecht 147 DANCe. I. (Olivares+, 2019)
J/A+A/633/A99 : GaiaDR2 openclusters in Milky Way. II (Cantat-Gaudin+, 2020)
J/A+A/640/A1 : Portrait Galactic disc (Cantat-Gaudin+, 2020)
J/MNRAS/496/3887 : Bolometric correction for nearby MS stars (Eker+, 2020)
J/MNRAS/494/4713 : Study of NGC 381, NGC 2360 and Berkeley 68 (Maurya+, 2020)
J/A+A/640/A127 : Open cluster properties with Gaia and LAMOST (Zhong+, 2020)
J/other/ApSS/366.68 : Czernik 2 & NGC 7554 CCD UBV photometry (Akbulut+, 2021)
J/MNRAS/504/356 : Updated parameters of 1743 open clusters (Dias+, 2021)
J/other/RAA/21.93 : 74 new open clusters found in Gaia DR2 (He+, 2021)
J/A+A/651/A104 : Spiral arms Gaia EDR3 (Poggio+, 2021)
J/A+A/649/A3 : Gaia EDR3 photometric passbands (Riello+, 2021)
J/AJ/162/146 : Kinematic & photometry of King11 Gaia EDR3 (Sariya+, 2021)
J/A+A/647/A19 : 3D Kinematics and age of OCs (Tarricq+, 2021)
J/AN/342/538 : Frolov 1 and NGC 7510 CCD UBV photometry (Yontan+, 2021)
J/AJ/163/191 : Photometry & astrometry in NGC 1664 & NGC 6939 (Koc+, 2022)
J/other/RMxAA/58.333 : NGC 1193 and NGC 1798 CCD UBV photometry (Yontan+, 2022)
J/A+A/673/A114 : Improving the open cluster census. II. (Hunt+, 2023)
J/AJ/165/79 : Catalogs for Berkeley 68 and Stock 20 (Yontan, 2023)
Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- Cluster Cluster identifier
10- 13 I4 --- Seq [1/2474] Sequential identifier in Cluster
15- 15 I1 h RAh [3/4] Hour of Right Ascension
(ICRS at Epoch=2016)
17- 18 I2 min RAm Minute of Right Ascension
(ICRS at Epoch=2016)
20- 24 F5.2 s RAs Second of Right Ascension
(ICRS at Epoch=2016)
26- 27 I2 deg DEd [45/56] Degree of Declination
(ICRS at Epoch=2016)
29- 30 I2 arcmin DEm Arcminute of Declination
(ICRS at Epoch=2016)
32- 36 F5.2 arcsec DEs Arcsecond of Declination
(ICRS at Epoch=2016)
38- 43 F6.3 mag Vmag [9.99/21] TUG/T100 V band magnitude
45- 49 F5.3 mag e_Vmag [0/0.2] Uncertainty in Vmag
51- 57 F7.3 mag U-B [-4.52/2.3]?=-99.990 TUG/T100 U-B Color
59- 65 F7.3 mag e_U-B [0.001/0.9]?=-99.990 Uncertainty in U-B
67- 71 F5.3 mag B-V [0.14/3.83] TUG/T100 B-V Color
73- 77 F5.3 mag e_B-V [0.001/0.3] Uncertainty in B-V
79- 84 F6.3 mag Gmag [10/20.6] Gaia DR3 G band magnitude
86- 90 F5.3 mag e_Gmag [0.003/0.02] Uncertainty in Gmag
92- 98 F7.3 mag BP-RP [0.58/5.47]?=-99.990 Gaia DR3 GBP-GRP color
100-106 F7.3 mag e_BP-RP [0.005/0.5]?=-99.990 Uncertainty in GBP-GRP
108-114 F7.3 mas.yr-1 pmRA [-79.5/49.9] Gaia DR3 proper motion in
Right Ascension
116-120 F5.3 mas.yr-1 e_pmRA [0.01/2] Uncertainty in pmRA
122-129 F8.3 mas.yr-1 pmDE [-297/16] Gaia DR3 proper motion in
Declination
131-135 F5.3 mas.yr-1 e_pmDE [0.01/2] Uncertainty in pmDE
137-142 F6.3 mag plx [-3.86/22.7] Gaia DR3 parallax
144-148 F5.3 mag e_plx [0.01/2] Uncertainty in plx
150-154 F5.2 --- Pmemb [0/1.0] Membership probability
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History:
From electronic version of the journal
(End) Prepared by [AAS], Coralie Fix [CDS], 12-Apr-2024