Fornax Globular 3

DOI

We present new B-V color-magnitude diagrams for Fornax globular cluster 3 and the surrounding field where our data reach one magnitude below the horizontal branch which is at V_HB_=21.28. After subtracting the field stars from the cluster CMD, we found no evidence for an intrinsic width of the red giant branch because the scatter is only slightly wider than the photometric errors. We determine that there is an intrinsic width to the horizontal branch because the scatter is larger than the photometric errors. After comparing our data with earlier photometry, we find 7 possible variable stars, both within and outside the instability strip, out of a total of 74 horizontal branch stars. We calculate the horizontal branch type of cluster 3 to be of intermediate color, -0.110+/-0.104, which when compared to Fornax cluster 1, having similar metallicity, suggests a second-parameter pair. Five carbon star candidates identified by Jorgensen & Jimenez (1997, Cat. ) are marked in the field-subtracted color-magnitude diagram. (c) 1997 American Astronomical Society.

Cone search capability for table J/AJ/114/1471/table3 (*Fornax cluster 3 photometry)

Identifier
DOI http://doi.org/10.26093/cds/vizier.51141471
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/AJ/114/1471
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/114/1471
Related Identifier http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/114/1471
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/AJ/114/1471
Provenance
Creator Smith E.O.; Michael R.R.; Neill J.D.
Publisher CDS
Publication Year 1998
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Dataset; AstroObjects
Discipline Astrophysics and Astronomy; Natural Sciences; Observational Astronomy; Physics; Stellar Astronomy