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  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
  4. 1.01 Articoli in rivista
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/28150
Title: A Gaia DR2 view of the open cluster population in the Milky Way
Authors: Cantat-Gaudin, T.
Jordi, C.
VALLENARI, Antonella 
BRAGAGLIA, Angela 
Balaguer-Núñez, L.
Soubiran, C.
Bossini, D.
Moitinho, A.
Castro-Ginard, A.
Krone-Martins, A.
Casamiquela, L.
SORDO, ROSANNA 
CARRERA, JIMENEZ RICARDO JESUS 
Issue Date: 2018
Journal: ASTRONOMY & ASTROPHYSICS 
Number: 618
First Page: A93
Abstract: Context. Open clusters are convenient probes of the structure and history of the Galactic disk. They are also fundamental to stellar evolution studies. The second Gaia data release contains precise astrometry at the submilliarcsecond level and homogeneous photometry at the mmag level, that can be used to characterise a large number of clusters over the entire sky. <BR /> Aims: In this study we aim to establish a list of members and derive mean parameters, in particular distances, for as many clusters as possible, making use of Gaia data alone. <BR /> Methods: We compiled a list of thousands of known or putative clusters from the literature. We then applied an unsupervised membership assignment code, UPMASK, to the Gaia DR2 data contained within the fields of those clusters. <BR /> Results: We obtained a list of members and cluster parameters for 1229 clusters. As expected, the youngest clusters are seen to be tightly distributed near the Galactic plane and to trace the spiral arms of the Milky Way, while older objects are more uniformly distributed, deviate further from the plane, and tend to be located at larger Galactocentric distances. Thanks to the quality of Gaia DR2 astrometry, the fully homogeneous parameters derived in this study are the most precise to date. Furthermore, we report on the serendipitous discovery of 60 new open clusters in the fields analysed during this study. <P />Full Table 1 is only available in electronic form at the CDS via anonymous ftp to <A href="http://cdsarc.u-strasbg.fr">http://cdsarc.u-strasbg.fr</A> (ftp://130.79.128.5) or via <A href="http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/618/A93">http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/618/A93
URI: http://hdl.handle.net/20.500.12386/28150
URL: https://arxiv.org/pdf/1805.08726.pdf
https://www.aanda.org/articles/aa/abs/2018/10/aa33476-18/aa33476-18.html
ISSN: 0004-6361
DOI: 10.1051/0004-6361/201833476
Bibcode ADS: 2018A&A...618A..93C
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

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