Advanced search    

Search: authors:"J.-C. Mermilliod"

13 papers found.
Use AND, OR, NOT, +word, -word, "long phrase", (parentheses) to fine-tune your search.

Membership, binarity and metallicity of red giants in the southern open cluster NGC 2354

We present new Coravel radial-velocity observations and photoelectric photometry in the UBV, DDO and Washington systems for a sample of red giant candidates in the field of the intermediate-age open cluster NGC 2354. Photometric membership probabilities show very good agreement with those obtained from Coravel radial velocities. The analysis of the photometric and kinematical...

Analysing the database for stars in open clusters - I. General methods and description of the data

, Astrophys. and Space Sci. Library , 203 , 127 Mermilliod , J.-C. , & Mermilliod , M. 1994 , Catalogue of Mean UBV Data on Stars (New York: Springer Verlag) Paunzen , E. , & Maitzen , H. M. 2002 , A &A, 385

Red giants in open clusters - XIII. Orbital elements of 156 spectroscopic binaries

Context.The identification and characterisation of spectroscopic binaries with red-giant primaries in open clusters is important for a proper understanding of the colour-magnitude diagrams of the clusters. Moreover, the orbital eccentricities and axial rotations of these binaries are valuable probes into the inner structure and tidal interaction of the stars.Aims.We report on a...

Red giants in open clusters - XIII. Orbital elements of 156 spectroscopic binaries

Context.The identification and characterisation of spectroscopic binaries with red-giant primaries in open clusters is important for a proper understanding of the colour-magnitude diagrams of the clusters. Moreover, the orbital eccentricities and axial rotations of these binaries are valuable probes into the inner structure and tidal interaction of the stars.Aims.We report on a...

Membership, binarity, and rotation of F-G-K stars in the open cluster Blanco 1

Context. The nearby open cluster Blanco 1 is of considerable astrophysical interest for formation and evolution studies of open clusters because it is the third highest Galactic latitude cluster known. It has been observed often, but so far no definitive and comprehensive membership determination is readily available.Aims. An observing programme was carried out to study the...

The evolution of lithium depletion in young open clusters: NGC 6475

separate paper devoted to the study of NGC 6475 based on CORAVEL observations. If necessary, data used in the present paper are available from J.–C. Mermilliod. CORAVEL radial velocities have been used in

A deep proper-motion survey of the nearby open cluster Blanco 1*,†

We provide two comprehensive catalogues of positions and proper motions in the area of open cluster Blanco 1. The main catalogue, CtlgM, contains 6271 objects down to V∼ 18.5 and covers a circular ∼11 deg2 area. The accuracy of CtlgM proper motions, at about 0.3–0.5 mas yr−1 for well-measured stars, permits an excellent segregation between the cluster and field stars. The vector...

Photometric and Coravel observations of red giant candidates in three open clusters: membership, binarity, reddening and metallicity

Aims.We present new CORAVEL radial-velocity observations and photoelectric photometry in the and  systems for a sample of potential members of the red-giant branches of NGC 6192, NGC 6208 and NGC 6268, three open clusters projected close to the Galactic center direction. We also examine the properties of a sample of 42 inner disk open clusters projected towards almost the same...

Photometric and Coravel observations of red giant candidates in three open clusters: membership, binarity, reddening and metallicity

Aims.We present new CORAVEL radial-velocity observations and photoelectric photometry in the and  systems for a sample of potential members of the red-giant branches of NGC 6192, NGC 6208 and NGC 6268, three open clusters projected close to the Galactic center direction. We also examine the properties of a sample of 42 inner disk open clusters projected towards almost the same...

WIYN open cluster study - XXVI. Improved kinematic membership and spectroscopy of IC 2391

Context.Young open clusters provide important clues to the interface between the main sequence and pre-main-sequence phases of stellar evolution. The young and nearby open cluster IC 2391 is well-suited to studies of these two evolutionary phases.Aims.We establish a bona fide set of cluster members and then analyze this set in terms of binary frequency, projected rotational...

The General Catalogue of Photometric Data (GCPD). II.

ADS output pages. interests which may prove useful in particular applications if one knows about their existence. The proliferation of - Send o print requests to: J.-C. Mermilliod 2. The photometric ... , A &AS 36 , 163 Mermilliod J.-C. , 1986 , A &AS 63 , 293 Mermilliod J.-C. , Mermilliod M. , 1994 , \ Catalogue of Mean UBV Data on Stars" . Springer Verlag, New-York

Multicolour photometry and Coravel observations of stars in the southern open cluster IC 2488

We present new UBV photoelectric observations of 119 stars in the field of the southern open cluster IC 2488, supplemented by DDO and Washington photometry and Coravel radial velocities for a sample of red giant candidates. Nearly 50% of the stars sampled – including three red giants and one blue straggler – are found to be probable cluster members. Photometric membership...

Red giants in open clusters - IX. NGC 2324, 2818, 3960 and 6259

We present accurate radial velocities and photoelectric UBV photometry for 73 and 57 red-giant candidates, respectively, in the intermediate-age open clusters NGC 2324, 2818, 3960 and 6259. These data confirm the membership of 47 stars, 12 of which (26% ) are spectroscopic binaries; three preliminary orbits have been determined in NGC 3960. From Washington photometry of 8 red...