BVRI photometry of NGC 3231, NGC 7055, and NGC 7127 (Research
Note)

J 2012

BVRI photometry of NGC 3231, NGC 7055, and NGC 7127 (Research Note)

PAUNZEN, Ernst; L. HERMANSSON a P. HOLMSTROM

Základní údaje

Originální název

BVRI photometry of NGC 3231, NGC 7055, and NGC 7127 (Research Note)

Autoři

PAUNZEN, Ernst; L. HERMANSSON a P. HOLMSTROM

Vydání

Astronomy and Astrophysics, Paris, EDP Sciences, 2012, 0004-6361

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Francie

Utajení

není předmětem státního či obchodního tajemství

Impakt faktor

Impact factor: 5.084

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/12:00058300

Organizační jednotka

Přírodovědecká fakulta

DOI

https://doi.org/10.1051/0004-6361/201118468

UT WoS

000305803300046

Klíčová slova anglicky

open clusters and associations: general; open clusters and associations: individual: NGC 3231; open clusters and associations: individual: NGC 7055; open clusters and associations: individual: NGC 7127

Štítky

AKR, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 27. 1. 2013 21:47, doc. RNDr. Miloslav Zejda, Ph.D.

Anotace

V originále

Context. Open clusters are often used as tracers for the formation and evolution of the Milky Way. But they can also be used to study distinct "local stellar populations" and all kind of stellar groups. All these studies crucially depend on their unambiguous detection and classification separating them from the fore-and background field population. Aims. Still more than one third of the catalogued galactic open clusters are unstudied to date. We have chosen three northern open cluster fields, namely NGC 3231, NGC 7055, and NGC 7127 which have been never studied before to shed more light on their true nature. Methods. We present Johnson-Cousins BVRI photometry down to V approximate to 19 mag. After the transformation to the standard systems, colour-magnitude diagrams were generated. These diagrams were used to fit solar abundant isochrones to determine the distance modulus, reddening and apparent age of the main sequences. Results. As reported before, a significant plate-dependent distortion of the UCAC3 compared to the PPMXL within all three star fields was found. No correlation of this distortion with the apparent magnitude of the objects was detected. From the analysis of the colour-magnitude diagrams and the available proper motions we conclude that NGC 7055 and NGC 7127 are young, real, open clusters with ages of about 10 and 100 Myr, respectively. They are located in a distance of about 3300 as well as 5700 pc from the Sun. NGC 3231, on the other hand, is probably a high galactic latitude open cluster remnant.

Návaznosti

GAP209/12/0217, projekt VaV

Název: Multispektrální proměnnost horkých hvězd a její příčiny

Investor: Grantová agentura ČR, Multispektrální proměnnost horkých hvězd a její příčiny

Citovat

PAUNZEN, Ernst; L. HERMANSSON a P. HOLMSTROM. BVRI photometry of NGC 3231, NGC 7055, and NGC 7127 (Research Note). Astronomy and Astrophysics. Paris: EDP Sciences, 2012, roč. 542, June, s. "A68"-"A71", 4 s. ISSN 0004-6361. Dostupné z: https://doi.org/10.1051/0004-6361/201118468.

@article{1083551,
   author = {Paunzen, Ernst and Hermansson, L. and Holmstrom, P.},
   article_location = {Paris},
   article_number = {June},
   doi = {https://doi.org/10.1051/0004-6361/201118468},
   keywords = {open clusters and associations: general; open clusters and associations: individual: NGC 3231; open clusters and associations: individual: NGC 7055; open clusters and associations: individual: NGC 7127},
   language = {eng},
   issn = {0004-6361},
   journal = {Astronomy and Astrophysics},
   title = {BVRI photometry of NGC 3231, NGC 7055, and NGC 7127 (Research Note)},
   volume = {542},
   year = {2012}
}

TY  - JOUR
ID  - 1083551
AU  - Paunzen, Ernst - Hermansson, L. - Holmstrom, P.
PY  - 2012
TI  - BVRI photometry of NGC 3231, NGC 7055, and NGC 7127 (Research Note)
JF  - Astronomy and Astrophysics
VL  - 542
IS  - June
SP  - "A68"-"A71"
EP  - "A68"-"A71"
PB  - EDP Sciences
SN  - 00046361
KW  - open clusters and associations: general
KW  - open clusters and associations: individual: NGC 3231
KW  - open clusters and associations: individual: NGC 7055
KW  - open clusters and associations: individual: NGC 7127
N2  - Context. Open clusters are often used as tracers for the formation and evolution of the Milky Way. But they can also be used to study distinct "local stellar populations" and all kind of stellar groups. All these studies crucially depend on their unambiguous detection and classification separating them from the fore-and background field population. Aims. Still more than one third of the catalogued galactic open clusters are unstudied to date. We have chosen three northern open cluster fields, namely NGC 3231, NGC 7055, and NGC 7127 which have been never studied before to shed more light on their true nature. Methods. We present Johnson-Cousins BVRI photometry down to V approximate to 19 mag. After the transformation to the standard systems, colour-magnitude diagrams were generated. These diagrams were used to fit solar abundant isochrones to determine the distance modulus, reddening and apparent age of the main sequences. Results. As reported before, a significant plate-dependent distortion of the UCAC3 compared to the PPMXL within all three star fields was found. No correlation of this distortion with the apparent magnitude of the objects was detected. From the analysis of the colour-magnitude diagrams and the available proper motions we conclude that NGC 7055 and NGC 7127 are young, real, open clusters with ages of about 10 and 100 Myr, respectively. They are located in a distance of about 3300 as well as 5700 pc from the Sun. NGC 3231, on the other hand, is probably a high galactic latitude open cluster remnant.
ER  -

PAUNZEN, Ernst; L. HERMANSSON a P. HOLMSTROM. BVRI photometry of NGC 3231, NGC 7055, and NGC 7127 (Research Note). \textit{Astronomy and Astrophysics}. Paris: EDP Sciences, 2012, roč.~542, June, s.~''A68''-''A71'', 4 s. ISSN~0004-6361. Dostupné z: https://doi.org/10.1051/0004-6361/201118468.

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