Membership of Cepheids and red giants in 8 open clusters - NGC 129, 6067, 6087, 6649, 6664, IC 4725, LY 6, RU 79

Details Membership of Cepheids and red giants in 8 open clusters - NGC 129, 6067, 6087, 6649, 6664, IC 4725, LY 6, RU 79 Membership of Cepheids and red giants in 8 open clusters - NGC 129, 6067, 6087, 6649, 6664, IC 4725, LY 6, RU 79

Sep 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26as...70..389m&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 70, no. 3, Sept. 1987, p. 389-407. SNSF-supported research.

Astronomy and Astrophysics

Astrophysics

66

Cepheid Variables, Open Clusters, Red Giant Stars, Binary Stars, Color-Magnitude Diagram, Radial Velocity, Stellar Color

Scientific paper

The membership of eight cluster Cepheids,DL Cas,EV Sct, V367 Sct, S Nor, TW Nor,V340 Nor, U Sgr and CS Vel, has been examined by comparing their systemic radial velocity with that observed for the red giants in the same clusters. The membership is very probable in seven cases, the only-exception being CS Vel. Additional observations of main sequence stars are necessary to confirm some of the conclusions. One spectroscopic binary was discovered among the Cepheids (DL Cas) and at least four were among the red giants. Orbits have been determined for two red giants, one in NGC 129 and one in IC 4725. The position within the instability strip of the nonvariable F5Ib star in NGC 129 is due to its probable composite (gK + dB) character. The ratio of the number of Cepheids to the number of red giants is less than 1, in good agreement with the prediction of evolutionary models with core overshooting. This study is based on 382 observations of 45 stars, obtained with the radial velocity scanner CORAVEL.

Affiliated with

Also associated with

No associations

Rating

Membership of Cepheids and red giants in 8 open clusters - NGC 129, 6067, 6087, 6649, 6664, IC 4725, LY 6, RU 79 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 Membership of Cepheids and red giants in 8 open clusters - NGC 129, 6067, 6087, 6649, 6664, IC 4725, LY 6, RU 79, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Membership of Cepheids and red giants in 8 open clusters - NGC 129, 6067, 6087, 6649, 6664, IC 4725, LY 6, RU 79 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1668205