Browsing by Author "Marang, F."
Now showing 1 - 3 of 3
Results Per Page
Sort Options
Item Further observations of Hipparcos red stars and standards for UBV(RI)C photometry(Oxford University Press, 2007) Kilkenny, David; Koen, Chris; van Wyk, F.; Marang, F.; Cooper, D.We present homogeneous and standardized UBV(RI)C JHK photometry for over 100 M stars selected from an earlier paper on the basis of apparent photometric constancy. L photometry has been obtained for stars brighter than about L = 6. Most of the stars have a substantial number of UBV(RI)C observations and, it is hoped, will prove useful as red supplementary standards. Additionally,we list JHK photometry for nearly 300 Hipparcos red stars not selected as standards, as well as L photometry for the brightest stars.Item Improved SAAO–2MASS photometry transformations(Oxford University Press, 2007) Koen, Chris; Marang, F.; Kilkenny, David; Jacobs, C.Near-infrared photometry of 599 stars is used to calculate transformations from the South African Astronomical Observatory (SAAO) JHK system to the Two-Micron All-Sky Survey (2MASS) JHKS system. Both several-term formal regression relations and simplified transformations are presented. Inverse transformations (i.e. 2MASS to SAAO) are also given. The presence of non-linearities in some colour terms is highlighted.Item UBV(RI)C JHK observations of Hipparcos-selected nearby stars(Oxford University Press, 2010) Koen, Chris; Kilkenny, David; van Wyk, F.; Marang, F.We present homogeneous, standardized UBV(RI)C photometry for over 700 nearby stars selected on the basis of Hipparcos parallaxes. Additionally, we list JHK photometry for about half of these stars, as well as L photometry for 86 of the brightest. A number of stars with peculiar colours or anomalous locations in various colour–magnitude diagrams are discussed.