TY - JOUR
T1 - Photometric and spectroscopic study of the intermediate-age open cluster NGC 2355
AU - Donati, P.
AU - Bragaglia, A.
AU - Carretta, E.
AU - D'Orazi, V.
AU - Tosi, M.
AU - Cusano, F.
AU - Carini, R.
PY - 2015/11/11
Y1 - 2015/11/11
N2 - In this paper we analyse the evolutionary status and properties of the old open cluster NGC 2355, located in the Galactic anticentre direction, as a part of the long termprogramme BOCCE. NGC 2355 was observed with LBCatLBT using the Bessel B, V , and Ic filters. The cluster parameters have been obtained using the synthetic colour- magnitude diagram (CMD) method, as done in other papers of this series. Additional spectroscopic observations with FIESatNOT of three giant stars were used to deter- mine the chemical properties of the cluster. Our analysis shows that NGC 2355 has metallicity slightly less than solar, with [Fe/H]= -0:06 dex, age between 0.8 and 1 Gyr, reddening E(B - V ) in the range 0.14 and 0.19 mag, and distance modulus (m-M)0 of about 11 mag. We also investigated the abundances of O, Na, Al, α, iron-peak, and neutron capture elements, showing that NGC 2355 falls within the abundance distri- bution of similar clusters (same age and metallicity). The Galactocentric distance of NGC 2355 places it at the border between two regimes of metallicity distribution; this makes it an important cluster for the study of the chemical properties and evolution of the disc.
AB - In this paper we analyse the evolutionary status and properties of the old open cluster NGC 2355, located in the Galactic anticentre direction, as a part of the long termprogramme BOCCE. NGC 2355 was observed with LBCatLBT using the Bessel B, V , and Ic filters. The cluster parameters have been obtained using the synthetic colour- magnitude diagram (CMD) method, as done in other papers of this series. Additional spectroscopic observations with FIESatNOT of three giant stars were used to deter- mine the chemical properties of the cluster. Our analysis shows that NGC 2355 has metallicity slightly less than solar, with [Fe/H]= -0:06 dex, age between 0.8 and 1 Gyr, reddening E(B - V ) in the range 0.14 and 0.19 mag, and distance modulus (m-M)0 of about 11 mag. We also investigated the abundances of O, Na, Al, α, iron-peak, and neutron capture elements, showing that NGC 2355 falls within the abundance distri- bution of similar clusters (same age and metallicity). The Galactocentric distance of NGC 2355 places it at the border between two regimes of metallicity distribution; this makes it an important cluster for the study of the chemical properties and evolution of the disc.
KW - Hertzprung-Russell and colour-magnitude diagrams
KW - galaxy: disc
KW - open clusters and associations: general
KW - open clusters and associations: individual: NGC 2355
UR - http://www.scopus.com/inward/record.url?scp=85006499475&partnerID=8YFLogxK
U2 - 10.1093/mnras/stv1914
DO - 10.1093/mnras/stv1914
M3 - Article
AN - SCOPUS:85006499475
VL - 453
SP - 4185
EP - 4202
JO - Monthly Notices of the Royal Astronomical Society: Letters
JF - Monthly Notices of the Royal Astronomical Society: Letters
SN - 1745-3925
IS - 4
ER -