The old open cluster NGC 2506 and its similarity to NGC 2420

Details The old open cluster NGC 2506 and its similarity to NGC 2420 The old open cluster NGC 2506 and its similarity to NGC 2420

Feb 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...243..841m&link_type=abstract

Astrophysical Journal, Part 1, vol. 243, Feb. 1, 1981, p. 841-854.

Astronomy and Astrophysics

Astrophysics

52

Abundance, Electrophotometry, Hertzsprung-Russell Diagram, Open Clusters, Stellar Spectrophotometry, Ubv Spectra, Astronomical Photography, Binary Stars, Color-Magnitude Diagram, Giant Stars, Interstellar Extinction, Spatial Distribution, Stellar Evolution, Stellar Luminosity, Stellar Motions

Scientific paper

Photoelectric photometry on the UBV and DDO systems and photographic photometry in B and V are presented for stars in the open cluster NGC 2506. The derived ultraviolet delta (U - B) = 0.09 mag, and CN anomaly delta CN = -0.08 mag imply a low heavy-element abundance relative to the Hyades. The photographic photometry is combined with proper motion data of Chiu and van Altena (1981) to construct a color-magnitude diagram for the cluster members. The derived age of 3.4 billion years is similar to that of M67 from fits to the same grid of isochrones. The distance modulus of 12.2 mag corresponds to a position for NGC 2506 of almost 3 kpc near the direction of the galactic anticenter, and 500 pc above the plane. The characteristic of low metallicity for an old disk cluster, together with its galactocentric position several kpc beyond the solar orbit place this cluster into a class of similar objects that includes NGC 2420 as the prototype, NGC 2158, NGC 2204, NGC 2243, and Melotte 66. It is estimated that approximately half of the stars on the main sequence of NGC 2506 are binaries.

Affiliated with

Also associated with

No associations

Rating

The old open cluster NGC 2506 and its similarity to NGC 2420 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The old open cluster NGC 2506 and its similarity to NGC 2420, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The old open cluster NGC 2506 and its similarity to NGC 2420 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1407151