Deep photometry of globular clusters. XII - The metal-poor clusters NGC 5694 and Terzan 8

Details Deep photometry of globular clusters. XII - The metal-poor clusters NGC 5694 and Terzan 8 Deep photometry of globular clusters. XII - The metal-poor clusters NGC 5694 and Terzan 8

Jan 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26as...82...71o&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 82, no. 1, Jan. 1990, p. 71-112.

Astronomy and Astrophysics

Astrophysics

22

Astronomical Photometry, Globular Clusters, Asymptotic Giant Branch Stars, Blue Stars, Charge Coupled Devices, Color-Magnitude Diagram, Electrophotometry, Galactic Evolution, Horizontal Branch Stars, Metallicity, Stellar Luminosity, Tables (Data)

Scientific paper

Deep CCD photometries are presented for the little-known metal-poor clusters NGC 5694 and Terzan 8 down to V of about 24. NGC 5694 has a blue horizontal branch, a very high radial velocity, a metallicity of Fe/H = -1.65 + or - 0.06, a reddening of E(B-V) = 0.10 + or - 0.03, and an apparent distance modulus of (m - M)v = 17.82 + or - 0.15. It is located at 26.0 + or - 1.8 kpc from the Galactic center. The helium content derived from the ratio between the number of stars on the horizontal branch and the giant and asymptotic giant branches is consistent with that obtained for other clusters. Terzan 8 is a metal-poor (Fe/H = -1.82 + or - 0.10), moderately reddened (E/B-V/ = 0.20 + or - 0.05) cluster with a blue horizontal branch and apparent distance modulus of (m - M)v = 17.25 + or - 0.15. It is located at 13.8 + or - 2.0 kpc from the Galactic center. The C-M diagram and the luminosity function of NGC 5694 and Terzan 8 are similar to the M92 ones. NGC 5694 and Terzan 8 have ages close to that of the 'classical' globular cluster M92.

Affiliated with

Also associated with

No associations

Rating

Deep photometry of globular clusters. XII - The metal-poor clusters NGC 5694 and Terzan 8 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 Deep photometry of globular clusters. XII - The metal-poor clusters NGC 5694 and Terzan 8, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Deep photometry of globular clusters. XII - The metal-poor clusters NGC 5694 and Terzan 8 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1559115