2008A&A...484..609Y


C.D.S. - SIMBAD4 rel 1.7 - 2019.12.14CET19:28:28

2008A&A...484..609Y - Astronomy and Astrophysics, volume 484, 609-620 (2008/6-3)

Ground-based CCD astrometry with wide-field imagers. II. A star catalog for M 67: WFI2.2 m MPG/ESO astrometry, FLAMESLT radial velocities.

YADAV R.K.S., BEDIN L.R., PIOTTO G., ANDERSON J., CASSISI S., VILLANOVA S., PLATAIS I., PASQUINI L., MOMANY Y. and SAGAR R.

Abstract (from CDS):

The solar-age open cluster M 67 (C0847+120, NGC 2682) is a touchstone in studies of the old Galactic disk. Despite its outstanding role, the census of cluster membership for M 67 at fainter magnitudes and their properties are not well-established. Using proprietary and archival ESO data, we have obtained astrometric, photometric, and radial velocities of stars in a 34x33arcmin2 field centered on the old open cluster M 67. The two-epoch archival observations separated by 4 years and acquired with the Wide-Field Imager at the 2.2 m MPG/ESO telescope were reduced with our new astrometric techniques, as described in the first paper in this series. The same observations served to derive calibrated BVI photometry in M 67. Radial velocities were measured using the archival and new spectroscopic data obtained at the VLT. We have determined relative proper motions and membership probabilities for ∼2400 stars. The precision of proper motions for optimally exposed stars is 1.9mas/yr, gradually degrading down to ∼5mas/yr at V=20. Our relatively precise proper motions at V>16 were first obtained in this magnitude range for M 67. Radial velocities were measured for 211 stars in the same field. We also present a detailed comparison with recent theoretical isochrones from several independent groups. For the M 67 area, we provide positions, calibrated BVI photometry, relative proper motions, membership probabilities, and radial velocities. We demonstrate that ground-based CCD mosaic observations just a few years apart are producing proper motions, allowing reliable membership determination. We have produced a catalog that is electronically available to the astronomical community.

Abstract Copyright:

Journal keyword(s): Galaxy: open clusters and associations: individual: M 67 - astrometry - catalogs

VizieR on-line data: <Available at CDS (J/A+A/484/609): catalog.dat>

Nomenclature: Catalog: Cl* NGC 2682 YBP NNNN (Nos 1-2410).

Status in Simbad:  could be processed

Simbad objects: 7

goto Full paper

goto View the reference in ADS

Number of rows : 7

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NGC 188 OpC 00 48 26 +85 15.3           ~ 796 0
2 IC 2391 OpC 08 40 32 -53 02.0           ~ 705 0
3 NGC 2682 81 SB* 08 51 11.7795102754 +11 45 22.122658355   9.96 10.024     B8V 86 0
4 NGC 2682 OpC 08 51 18 +11 48.0           ~ 1991 0
5 BD+12 1926 RG* 08 51 29.9056917233 +11 47 16.877217672   11.004 9.555 9.360 8.36 K3III 122 0
6 NAME Baade Window reg 18 03.5 -30 01           ~ 518 3
7 NAME Galactic Bulge reg ~ ~           ~ 3264 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2008A&A...484..609Y and select 'bookmark this link' or equivalent in the popup menu


2019.12.14-19:28:28

© Université de Strasbourg/CNRS

    • Contact