dc.contributor.author | Guarcello, M.G. | |
dc.contributor.author | Wright, N.J. | |
dc.contributor.author | Drake, J.J. | |
dc.contributor.author | Aldcroft, T. | |
dc.contributor.author | Kashyap, V.L. | |
dc.contributor.author | García-Alvarez, D. | |
dc.contributor.author | Drew, J.E. | |
dc.date.accessioned | 2013-06-05T07:15:55Z | |
dc.date.available | 2013-06-05T07:15:55Z | |
dc.date.issued | 2012-10-01 | |
dc.identifier.citation | Guarcello , M G , Wright , N J , Drake , J J , Aldcroft , T , Kashyap , V L , García-Alvarez , D & Drew , J E 2012 , ' Optical photometric GTC/OSIRIS observations of the young massive association Cygnus OB2 ' , Astrophysical Journal, Supplement Series , vol. 202 , no. 2 , 19 . https://doi.org/10.1088/0067-0049/202/2/19 | |
dc.identifier.issn | 0067-0049 | |
dc.identifier.other | PURE: 1896184 | |
dc.identifier.other | PURE UUID: f2720629-0fd5-42ad-9e49-9191e00014c7 | |
dc.identifier.other | Scopus: 84866898300 | |
dc.identifier.uri | http://hdl.handle.net/2299/10699 | |
dc.description.abstract | In order to fully understand the gravitational collapse of molecular clouds, the star formation process, and the evolution of circumstellar disks, these phenomena must be studied in different Galactic environments with a range of stellar contents and positions in the Galaxy. The young massive association Cygnus OB2, in the Cygnus-X region, is a unique target to study how star formation and the evolution of circumstellar disks proceed in the presence of a large number of massive stars. We present a catalog obtained with recent optical observations in the r, i, z filters with OSIRIS, mounted on the 10.4 m Gran Telescopio CANARIAS telescope, which is the deepest optical catalog of Cyg OB2 to date. The catalog consists of 64,157 sources down to M = 0.15 M at the adopted distance and age of Cyg OB2. A total of 38,300 sources have good photometry in all three bands. We combined the optical catalog with existing X-ray data of this region, in order to define the cluster locus in the optical diagrams. The cluster locus in the r - i versus i - z diagram is compatible with an extinction of the optically selected cluster members in the 2.64 <A <5.57 range. We derive an extinction map of the region, finding a median value of A = 4.33 in the center of the association, decreasing toward the northwest. In the color-magnitude diagrams, the shape of the distribution of main-sequence stars is compatible with the presence of an obscuring cloud in the foreground ∼850 ± 25 pc from the Sun. | en |
dc.language.iso | eng | |
dc.relation.ispartof | Astrophysical Journal, Supplement Series | |
dc.rights | Open | |
dc.title | Optical photometric GTC/OSIRIS observations of the young massive association Cygnus OB2 | en |
dc.contributor.institution | School of Physics, Astronomy and Mathematics | |
dc.contributor.institution | Science & Technology Research Institute | |
dc.contributor.institution | Centre for Astrophysics Research | |
dc.description.status | Peer reviewed | |
dc.identifier.url | http://www.scopus.com/inward/record.url?scp=84866898300&partnerID=8YFLogxK | |
dc.description.versiontype | Submitted Version | |
dcterms.dateAccepted | 2012-10-01 | |
rioxxterms.version | SMUR | |
rioxxterms.versionofrecord | https://doi.org/10.1088/0067-0049/202/2/19 | |
rioxxterms.type | Journal Article/Review | |
herts.preservation.rarelyaccessed | true | |
herts.rights.accesstype | Open | |