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A Remarkable Oxygen-rich Asymptotic Giant Branch Variable in the Sagittarius Dwarf Irregular Galaxy
Patricia A. Whitelock, John W. Menzies, Michael W. Feast +1
We report and discuss JHKs photometry for Sgr dIG, a very metal-deficient galaxy in the Local Group, obtained over 3.5 years with the Infrared Survey Facility in South Africa. Thre…
The Local Group Galaxy IC1613 and its Asymptotic Giant Branch Variables
John W. Menzies, Patricia A. Whitelock, Michael W. Feast
JHKs photometry is presented from a three-year survey of the central regions of the Local Group dwarf irregular galaxy IC1613. The morphologies of the colour-magnitude and colour-c…
Cepheid Variables in the Flared Outer Disk of our Galaxy
Michael W. Feast, John W. Menzies, Noriyuki Matsunaga +1
Flaring and warping of the disk of the Milky Way have been inferred from observations of atomic hydrogen, but stars associated with flaring have not hitherto been reported. In the…
The Local Group Galaxy NGC 6822 and its Asymptotic Giant Branch Stars
Patricia A. Whitelock, John W. Menzies, Michael W. Feast +2
JHKs photometry is presented from a 3.5 year survey of the central regions of the irregular galaxy NGC6822. The morphology of the colour-magnitude and colour-colour diagrams is dis…
A Carbon-rich Mira variable in a globular cluster: A stellar merger
Michael W. Feast, John W. Menzies, Patricia A. Whitelock
The membership of Matsunaga's variable 1, a carbon-rich, mass-losing, Mira variable, in the globular cluster Lynga 7 is discussed on the basis of radial velocities. We conclude tha…
Asymptotic Giant Branch Variables in NGC 6822
Francois Nsengiyumva, Patricia W. Whitelock, Michael W. Feast +1
Using multi-epoch JHK photometry obtained with the 1.4-m Japanese-South African Infrared Survey Facility at Sutherland we have identified large numbers of AGB variables in NGC 6822…