J/AN/342/538 Frolov 1 and NGC 7510 CCD UBV photometry (Yontan+, 2021)
A study of open clusters Frolov 1 and NGC 7510 using CCD UBV photometry and
Gaia DR2 astrometry.
Yontan T., Bilir S., Ak T., Akbulut B., Canbay R., Banks T., Paunzen E.,
Ak S., Bostanci Z.F.
<Astron. Nachrichten 342, 538-552 (2021)>
=2021AN....342..538Y 2021AN....342..538Y (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, open ; Photometry, CCD ; Photometry, UBV ;
Proper motions
Keywords: Hertzsprung-Russell and colour-magnitude diagrams -
open clusters and associations: individual: Frolov 1, NGC 7510
Abstract:
We present reddening, photometric metallicity, age, and distance
estimates for the Frolov 1 and NGC 7510 open clusters based on charge
coupled device (CCD) UBV photometric and Gaia data. Photometric
observations were collected using the 1m telescope of the TUBITAK
National Observatory. Gaia data release 2 (DR2) proper motion data in
the direction of two groupings were used to identify cluster
membership. We determined mean proper motion values of
(pmRAcosDE, pmDE) = (-3.02±0.10, -1.75±0.08) and
(-3.66±0.07, -2.17±0.06)mas/yr for Frolov 1 and NGC 7510,
respectively. We used two color diagrams to obtain E(B-V) color
excesses for Frolov 1 and NGC 7510 of 0.65±0.06) and 1.05±0.05)mag,
respectively. We derived the photometric metallicity of Frolov 1 as
[Fe/H]=0.03±0.03) dex and adopted a solar metallicity for NGC 7510.
Based on these reddening and metallicities, we determined the distance
moduli and ages of the clusters by fitting stellar tracks and
isochrones with the Padova and TRieste Stellar Evolution Code (PARSEC)
isochrones to the cluster color-magnitude diagrams. Isochrone fitting
distances for Frolov 1 and NGC 7510 are 2864±254 and 2818±247pc,
respectively, which correspond to the ages 35±10Myr and 18±6Myr.
We also calculated mean Gaia distances and compared them with those
given in the literature and in this study, concluding that our results
are in good agreement with previous work. Finally, we calculated the
mass function slopes and found them to be X=-1.21±0.18 for Frolov 1
and X=-1.42±0.27 for NGC 7510.
Description:
CCD UBV images of the open clusters Frolov 1 and NGC 7510 and standard
stars selected from Landolt (2009, Cat. J/AJ/137/4186) were acquired
on 2016 November 2 and 2018 November 6 using a 1-m Ritchey-Chretien
telescope (T100) located at the TUBITAK National Observatory (TUG) in
Bakirlitepe, Antalya/Turkey.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 144 6155 Photometric and astrometric catalogue Frolov 1
table2.dat 144 1885 Photometric and astrometric catalogue NGC 7510
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See also:
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
Byte-by-byte Description of file: table1.dat table2.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- ID Sequential number
6- 7 I2 h RAh Right ascension (J2000)
9- 10 I2 min RAm Right ascension (J2000)
12- 16 F5.2 s RAs [0/60] Right ascension (J2000)
18 A1 --- DE- Declination sign (J2000)
19- 20 I2 deg DEd Declination (J2000)
22- 23 I2 arcmin DEm Declination (J2000)
25- 29 F5.2 arcsec DEs Declination (J2000)
31- 36 F6.3 mag Vmag Johnson V magnitude
38- 42 F5.3 mag e_Vmag ?=- rms uncertainty on Vmag
44- 49 F6.3 mag U-B ?=- Johnson U-B colour index
51- 55 F5.3 mag e_U-B ?=- rms uncertainty on U-B
57- 62 F6.3 mag B-V ?=- Johnson B-V colour index
64- 68 F5.3 mag e_B-V ?=- rms uncertainty on B-V
70- 75 F6.3 mag Gmag ?=- Gaia G magnitude
77- 81 F5.3 mag e_Gmag ?=- rms uncertainty on Gmag
83- 88 F6.3 mag BP-RP ?=- Gaia BP-RP colour index
90- 94 F5.3 mag e_BP-RP ?=- rms uncertainty on BP-RP
96-103 F8.3 mas/yr pmRA ?=- proper motion components (pmRA*cosDE)
105-109 F5.3 mas/yr e_pmRA ?=- rms uncertainty on proper motion
111-118 F8.3 mas/yr pmDE ?=- proper motion components (pmdec)
120-124 F5.3 mas/yr e_pmDE ?=- rms uncertainty on proper motion
126-133 F8.3 mas Plx ?=- trigonometric parallax
135-139 F5.3 mas e_Plx ?=- rms uncertainty on trigonometric parallax
141-144 F4.2 % Pmemb [0/1]?=- Membership probability
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Acknowledgements:
Selcuk Bilir, sbilir(at)istanbul.edu.tr
(End) Patricia Vannier [CDS] 25-Nov-2022