Fundamental parameters for 45 open clusters with Gaia DR2, an
improved extinction correction and a metallicity gradient prior

J 2020

Fundamental parameters for 45 open clusters with Gaia DR2, an improved extinction correction and a metallicity gradient prior

MONTEIRO, Hektor; Wilton S. DIAS; André MOITINHO; Tristan CANTAT-GAUDIN; Jacques R.D. LEPINE et al.

Základní údaje

Originální název

Fundamental parameters for 45 open clusters with Gaia DR2, an improved extinction correction and a metallicity gradient prior

Autoři

MONTEIRO, Hektor; Wilton S. DIAS; André MOITINHO; Tristan CANTAT-GAUDIN; Jacques R.D. LEPINE; Giovanni CARRARO a Ernst PAUNZEN

Vydání

Monthly Notices of the Royal Astronomical Society, Oxford, Oxford University Press, 2020, 0035-8711

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 5.287

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/20:00117437

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

open clusters and associations: general

Štítky

14312040, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 18. 12. 2020 14:40, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

Reliable fundamental parameters of open clusters (OCs) such as distance, age, and extinction are key to our understanding of Galactic structure and stellar evolution. In this work, we use Gaia Data Release 2 (DR2) to investigate 45 OCs listed in the New catalogue of optically visible open clusters and candidates (DAML) but with no previous astrometric membership estimation based on Gaia DR2. In the process of selecting targets for this study, we found that some clusters reported as new discoveries in recent papers based on Gaia DR2 were already known clusters listed in DAML. Cluster memberships were determined using a maximum likelihood method applied to Gaia DR2 astrometry. This has allowed us to estimate mean proper motions and mean parallaxes for all investigated clusters. Mean radial velocities were also determined for 12 clusters, 7 of which had no previous published values. We have improved our isochrone fitting code to account for interstellar extinction using an updated extinction polynomial for the Gaia DR2 photometric bandpasses and the Galactic abundance gradient as a prior for metallicity. The updated procedure was validated with a sample of clusters with high-quality [Fe/H] determinations. We then did a critical review of the literature and verified that our cluster parameter determinations represent a substantial improvement over previous values.

Citovat

MONTEIRO, Hektor; Wilton S. DIAS; André MOITINHO; Tristan CANTAT-GAUDIN; Jacques R.D. LEPINE; Giovanni CARRARO a Ernst PAUNZEN. Fundamental parameters for 45 open clusters with Gaia DR2, an improved extinction correction and a metallicity gradient prior. Monthly Notices of the Royal Astronomical Society. Oxford: Oxford University Press, 2020, roč. 499, č. 2, s. 1874-1889. ISSN 0035-8711. Dostupné z: https://doi.org/10.1093/mnras/staa2983.

@article{1712297,
   author = {Monteiro, Hektor and Dias, Wilton S. and Moitinho, André and CantatandGaudin, Tristan and Lepine, Jacques R.D. and Carraro, Giovanni and Paunzen, Ernst},
   article_location = {Oxford},
   article_number = {2},
   doi = {https://doi.org/10.1093/mnras/staa2983},
   keywords = {open clusters and associations: general},
   language = {eng},
   issn = {0035-8711},
   journal = {Monthly Notices of the Royal Astronomical Society},
   title = {Fundamental parameters for 45 open clusters with Gaia DR2, an improved extinction correction and a metallicity gradient prior},
   url = {https://doi.org/10.1093/mnras/staa2983},
   volume = {499},
   year = {2020}
}

TY  - JOUR
ID  - 1712297
AU  - Monteiro, Hektor - Dias, Wilton S. - Moitinho, André - Cantat-Gaudin, Tristan - Lepine, Jacques R.D. - Carraro, Giovanni - Paunzen, Ernst
PY  - 2020
TI  - Fundamental parameters for 45 open clusters with Gaia DR2, an improved extinction correction and a metallicity gradient prior
JF  - Monthly Notices of the Royal Astronomical Society
VL  - 499
IS  - 2
SP  - 1874-1889
EP  - 1874-1889
PB  - Oxford University Press
SN  - 00358711
KW  - open clusters and associations: general
UR  - https://doi.org/10.1093/mnras/staa2983
L2  - https://doi.org/10.1093/mnras/staa2983
N2  - Reliable fundamental parameters of open clusters (OCs) such as distance, age, and extinction are key to our understanding of Galactic structure and stellar evolution. In this work, we use Gaia Data Release 2 (DR2) to investigate 45 OCs listed in the New catalogue of optically visible open clusters and candidates (DAML) but with no previous astrometric membership estimation based on Gaia DR2. In the process of selecting targets for this study, we found that some clusters reported as new discoveries in recent papers based on Gaia DR2 were already known clusters listed in DAML. Cluster memberships were determined using a maximum likelihood method applied to Gaia DR2 astrometry. This has allowed us to estimate mean proper motions and mean parallaxes for all investigated clusters. Mean radial velocities were also determined for 12 clusters, 7 of which had no previous published values. We have improved our isochrone fitting code to account for interstellar extinction using an updated extinction polynomial for the Gaia DR2 photometric bandpasses and the Galactic abundance gradient as a prior for metallicity. The updated procedure was validated with a sample of clusters with high-quality [Fe/H] determinations. We then did a critical review of the literature and verified that our cluster parameter determinations represent a substantial improvement over previous values.
ER  -

MONTEIRO, Hektor; Wilton S. DIAS; André MOITINHO; Tristan CANTAT-GAUDIN; Jacques R.D. LEPINE; Giovanni CARRARO a Ernst PAUNZEN. Fundamental parameters for 45 open clusters with Gaia DR2, an improved extinction correction and a metallicity gradient prior. \textit{Monthly Notices of the Royal Astronomical Society}. Oxford: Oxford University Press, 2020, roč.~499, č.~2, s.~1874-1889. ISSN~0035-8711. Dostupné z: https://doi.org/10.1093/mnras/staa2983.

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