The Internal Proper Motions Of Stars In The Open Cluster M35

dc.contributor.utaustinauthorMcArthur, Barbara E.en_US
dc.contributor.utaustinauthorBenedict, G. Fritzen_US
dc.creatorMcNamara, Bernard J.en_US
dc.creatorHarrison, Thomas E.en_US
dc.creatorMcArthur, Barbara E.en_US
dc.creatorBenedict, G. Fritzen_US
dc.description.abstractRelative proper motions, based on 108 orbits of Hubble Space Telescope Fine Guidance Sensor data extending from 1992 to 2006, are reported for 74 stars in the open cluster M35 (NGC 2168). A subset of 22 of these objects are then used to compute the cluster's internal proper motion dispersions in both right ascension and declination. We find that these dispersions are equal to within their measurement errors. The average one-dimensional dispersion is 0.018 +/- 0.002 arcsec century(-1). When combined with the M35 radial velocity dispersion of 0.65 +/- 0.10 km s(-1) found by Geller et al., this produces a cluster distance of 762 +/- 145 pc. Using isochrone fits to the cluster main sequence, this distance suggests that M35 has an age of about 133 Myr. Although this age is consistent with that typically found for M35, the formal error in the dynamical distance of +/- 19% can accommodate ages between 65 Myr and 201 Myr.en_US
dc.description.departmentMcDonald Observatoryen_US
dc.identifier.citationMcNamara, Bernard J., Thomas E. Harrison, Barbara E. McArthur, and G. Fritz Benedict. >The Internal Proper Motions of Stars in the Open Cluster M35.> The Astronomical Journal, Vol. 142, No. 2 (Aug., 2011): 53.en_US
dc.relation.ispartofserialAstronomical Journalen_US
dc.rightsAdministrative deposit of works to Texas ScholarWorks: This works author(s) is or was a University faculty member, student or staff member; this article is already available through open access or the publisher allows a PDF version of the article to be freely posted online. The library makes the deposit as a matter of fair use (for scholarly, educational, and research purposes), and to preserve the work and further secure public access to the works of the University.en_US
dc.subjectopen clusters and associations: individual (m35)en_US
dc.subjectproper motionsen_US
dc.subjectkinematics and dynamicsen_US
dc.subjectfine guidance sensorsen_US
dc.subjectngc 2168en_US
dc.subjectastronomy & astrophysicsen_US
dc.titleThe Internal Proper Motions Of Stars In The Open Cluster M35en_US

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