CCD UBV photometry of the open cluster NGC 6819

J 2016

CCD UBV photometry of the open cluster NGC 6819

AK, Tansel, Funda BOSTANCI, Talar YONTAN, Selcuk BILIR, Tolger GUVER et. al.

Basic information

Original name

CCD UBV photometry of the open cluster NGC 6819

Authors

AK, Tansel (792 Turkey), Funda BOSTANCI (792 Turkey), Talar YONTAN (792 Turkey), Selcuk BILIR (792 Turkey), Tolger GUVER (792 Turkey), Serap AK (792 Turkey), Hakan URGUP (792 Turkey) and Ernst PAUNZEN (40 Austria, guarantor, belonging to the institution)

Edition

Astrophysics and Space Science, DORDRECHT, Springer, 2016, 0004-640X

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10308 Astronomy

Country of publisher

Netherlands

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 1.622

RIV identification code

RIV/00216224:14310/16:00088052

Organization unit

Faculty of Science

DOI

http://dx.doi.org/10.1007/s10509-016-2707-2

UT WoS

000372553700011

Keywords in English

Galaxy: open cluster and associations: individual: NGC 6819; Stars: Hertzsprung Russell (HR) diagram

Abstract

V originále

We present the results of CCD UBV observations of the open cluster NGC 6819. We calculated the stellar density profile in the cluster's field to determine the structural parameters of NGC 6819. Using the existing astrometric data, we calculated the probabilities of the stars being physical members of the cluster, and used these objects in the determination of the astrophysical parameters of NGC 6819. We inferred the reddening and metallicity of the cluster as E(B-V) = 0.130 +/- 0.035 mag and [Fe/H] = +0.051 +/- 0.020 dex, respectively, using the U-B vs B-V two-colour diagram and UV excesses of the F-G type main-sequence stars. We fit the colour-magnitude diagrams of NGC 6819 with the PARSEC isochrones and derived the distance modula, distance and age of the cluster as mu(V) = 12.22 +/- 0.10 mag, d = 2309 +/- 106 pc and t = 2.4 +/- 0.2 Gyr, respectively. The parameters of the galactic orbit estimated for NGC 6819 indicate that the cluster is orbiting in a slightly eccentric orbit of e = 0.06 with a period of P-orb = 142 Myr. The slope of the mass function estimated for the cluster is close to the one found for the stars in the solar neighbourhood.

Links

GP14-26115P, research and development project

Name: Vstříc k jednotné škále metalicity pro otevřené hvězdokupy

Investor: Czech Science Foundation

3SGA5916, interní kód MU

Name: Hvězdy a hvězdokupy v Magellanových mračnech (Acronym: Webda MaC)

Investor: South-Moravian Region, Incoming grants

Citovat

AK, Tansel, Funda BOSTANCI, Talar YONTAN, Selcuk BILIR, Tolger GUVER, Serap AK, Hakan URGUP and Ernst PAUNZEN. CCD UBV photometry of the open cluster NGC 6819. Astrophysics and Space Science. DORDRECHT: Springer, 2016, vol. 361, No 4, p. "nestrankovano", 14 pp. ISSN 0004-640X. Available from: https://dx.doi.org/10.1007/s10509-016-2707-2.

@article{1350540,
   author = {Ak, Tansel and Bostanci, Funda and Yontan, Talar and Bilir, Selcuk and Guver, Tolger and Ak, Serap and Urgup, Hakan and Paunzen, Ernst},
   article_location = {DORDRECHT},
   article_number = {4},
   doi = {http://dx.doi.org/10.1007/s10509-016-2707-2},
   keywords = {Galaxy: open cluster and associations: individual: NGC 6819; Stars: Hertzsprung Russell (HR) diagram},
   language = {eng},
   issn = {0004-640X},
   journal = {Astrophysics and Space Science},
   title = {CCD UBV photometry of the open cluster NGC 6819},
   volume = {361},
   year = {2016}
}

TY  - JOUR
ID  - 1350540
AU  - Ak, Tansel - Bostanci, Funda - Yontan, Talar - Bilir, Selcuk - Guver, Tolger - Ak, Serap - Urgup, Hakan - Paunzen, Ernst
PY  - 2016
TI  - CCD UBV photometry of the open cluster NGC 6819
JF  - Astrophysics and Space Science
VL  - 361
IS  - 4
SP  - "nestrankovano"
EP  - "nestrankovano"
PB  - Springer
SN  - 0004640X
KW  - Galaxy: open cluster and associations: individual: NGC 6819
KW  - Stars: Hertzsprung Russell (HR) diagram
N2  - We present the results of CCD UBV observations of the open cluster NGC 6819. We calculated the stellar density profile in the cluster's field to determine the structural parameters of NGC 6819. Using the existing astrometric data, we calculated the probabilities of the stars being physical members of the cluster, and used these objects in the determination of the astrophysical parameters of NGC 6819. We inferred the reddening and metallicity of the cluster as E(B-V) = 0.130 +/- 0.035 mag and [Fe/H] = +0.051 +/- 0.020 dex, respectively, using the U-B vs B-V two-colour diagram and UV excesses of the F-G type main-sequence stars. We fit the colour-magnitude diagrams of NGC 6819 with the PARSEC isochrones and derived the distance modula, distance and age of the cluster as mu(V) = 12.22 +/- 0.10 mag, d = 2309 +/- 106 pc and t = 2.4 +/- 0.2 Gyr, respectively. The parameters of the galactic orbit estimated for NGC 6819 indicate that the cluster is orbiting in a slightly eccentric orbit of e = 0.06 with a period of P-orb = 142 Myr. The slope of the mass function estimated for the cluster is close to the one found for the stars in the solar neighbourhood.
ER  -

AK, Tansel, Funda BOSTANCI, Talar YONTAN, Selcuk BILIR, Tolger GUVER, Serap AK, Hakan URGUP and Ernst PAUNZEN. CCD UBV photometry of the open cluster NGC 6819. \textit{Astrophysics and Space Science}. DORDRECHT: Springer, 2016, vol.~361, No~4, p.~''nestrankovano'', 14 pp. ISSN~0004-640X. Available from: https://dx.doi.org/10.1007/s10509-016-2707-2.

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