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Asteroseismology of the High-amplitude Scuti Star EH Librae
Xiran Xie, Jianning Fu, Gang Meng +7
A subclass of intermediate mass variables Scuti stars, known as High-amplitude Scuti (HADS) stars, exhibits pronounced radial pulsations. We used ground- and space-based ob…
Characterizing the variability of Melotte 111 AV 1224: a new variable star in the Coma Berenices open cluster
L. Fox-Machado, R. Michel, M. Alvarez +1
A search for new pulsating stars in the Coma Berenices open cluster was carried out. As a result of this search the cluster member Melotte 111 AV 1224 presented clear indications o…
Spectroscopy of BL Cam - Observations
M. Alvarez, R. Michel, L. Fox-Machado +3
The star BL Camelopardalis (GD 428, GSC 04067-00471, V=12.92, B=13.1), is a SX Phoenicis pulsating variable showing a high amplitude variability (300-350 mmag), with a very clear p…
Two-site CCD observations and spectroscopy of HD 207331: a new Scuti variable in Cygnus
L. Fox Machado, W. J. Schuster, C. Zurita +2
The results of an observational campaign on the new Scuti pulsator \astrobj{HD~207331} are reported. The star was observed photometrically from August 26 to September 2, 2009 f…
HD 207331 a new Scuti star in the Cygnus field: discovery and follow-up observations
L. Fox-Machado, W. J. Schuster, C. Zurita +2
Preliminary results on the discovery and follow-up observations of a new Scuti pulsator in the Cygnus field are presented. The variability of the star HD 207331 was detected wh…
Preliminary results from the STEPHI2009 campaign on the open cluster NGC 1817
O. L. Creevey, J. N. Fu, L. Fox Machado +10
We present preliminary observational results of the multi-site STEPHI campaign on the cluster NGC 1817. The three observatories involved are San Pedro Martir (Mexico), Xing Long (C…
CCD Photometry of the Pleiades Delta Scuti Star V650 Tauri
L. Fox Machado, R. Michel, M. Alvarez +2
The preliminary results of a three-site CCD photometric campaign are reported. The Scuti variable V650 Tauri belonging to the Pleiades cluster was observed photometrically for…