Zobrazeno 1 - 10
of 78
pro vyhledávání: '"North, J. R."'
The Sydney University Stellar Interferometer (SUSI) has been used to make a new determination of the angular diameter of Sirius A. The observations were made at an effective wavelength of 694.1 nm and the new value for the limb-darkened angular diame
Externí odkaz:
http://arxiv.org/abs/1010.3790
Autor:
Robertson, J. G., Davis, J., Ireland, M. J., Tuthill, P. G., Tango, W. J., Jacob, A. P., North, J. R., Brummelaar, T. A. ten
The University of Sydney has a long history in optical stellar interferometry. The first project, in the 1960s, was the Narrabri Stellar Intensity Interferometer, which measured the angular diameters of 32 hot stars and established the temperature sc
Externí odkaz:
http://arxiv.org/abs/0905.1749
Observations of the pulsation of the Cepheid l Car with the Sydney University Stellar Interferometer
Autor:
Davis, J., Jacob, A. P., Robertson, J. G., Ireland, M. J., North, J. R., Tango, W. J., Tuthill, P. G.
Observations of the southern Cepheid l Car to yield the mean angular diameter and angular pulsation amplitude have been made with the Sydney University Stellar Interferometer (SUSI) at a wavelength of 696 nm. The resulting mean limb-darkened angular
Externí odkaz:
http://arxiv.org/abs/0812.4791
Autor:
Tango, W. J., Davis, J., Jacob, A. P., Mendez, A., North, J. R., O'Byrne, J. W., Seneta, E. B., Tuthill, P. G.
The binary star delta Sco (HD143275) underwent remarkable brightening in the visible in 2000, and continues to be irregularly variable. The system was observed with the Sydney University Stellar Interferometer (SUSI) in 1999, 2000, 2001, 2006 and 200
Externí odkaz:
http://arxiv.org/abs/0811.4004
Autor:
North, J. R., Davis, J., Robertson, J. G., Bedding, T. R., Bruntt, H., Ireland, M. J., Jacob, A. P., Lacour, S., O'Byrne, J. W., Owens, S. M., Stello, D., Tango, W. J., Tuthill, P. G.
We have used the Sydney University Stellar Interferometer (SUSI) to measure the angular diameter of the F9 V star beta Virginis. After correcting for limb darkening and combining with the revised Hipparcos parallax, we derive a radius of 1.703 +/- 0.
Externí odkaz:
http://arxiv.org/abs/0811.1804
Autor:
Bruntt, H., North, J. R., Cunha, M., Brandao, I. M., Elkin, V. G., Kurtz, D. W., Davis, J., Bedding, T. R., Jacob, A. P., Owens, S. M., Robertson, J. G., Tango, W. J., Gameiro, J. F., Ireland, M. J., Tuthill, P. G.
We have used the Sydney University Stellar Interferometer (SUSI) to measure the angular diameter of alpha Cir. This is the first detailed interferometric study of a rapidly oscillating A (roAp) star, alpha Cir being the brightest member of its class.
Externí odkaz:
http://arxiv.org/abs/0803.1518
Autor:
Davis, J., Booth, A. J., Ireland, M. J., Jacob, A. P., North, J. R., Owens, S. M., Robertson, J. G., Tango, W. J., Tuthill, P. G.
New angular diameter determinations for the bright southern F8 supergiant Delta CMa enable the bolometric emergent flux and effective temperature of the star to be determined with improved accuracy. The spectral flux distribution and bolometric flux
Externí odkaz:
http://arxiv.org/abs/0709.3873
Autor:
Davis, J., Ireland, M. J., Chow, J., Jacob, A. P., Lucas, R. E., North, J. R., O'Byrne, J. W., Owens, S. M., Robertson, J. G., Seneta, E., Tango, W. J., Tuthill, P. G.
A new beam-combination and detection system has been installed in the Sydney University Stellar Interferometer working at the red end of the visual spectrum (wavelength range 500-950 nm) to complement the existing blue-sensitive system (wavelength ra
Externí odkaz:
http://arxiv.org/abs/0709.3872
The first orbital solution for the spectroscopic pair in the multiple star system sigma Scorpii, determined from measurements with the Sydney University Stellar Interferometer (SUSI), is presented. The primary component is of beta Cephei variable typ
Externí odkaz:
http://arxiv.org/abs/0707.0897
Autor:
North, J. R., Davis, J., Bedding, T. R., Ireland, M. J., Jacob, A. P., O'Byrne, J., Owens, S. M., Robertson, J. G., Tango, W. J., Tuthill, P. G.
We have used the Sydney University Stellar Interferometer (SUSI) to measure the angular diameter of beta Hydri. This star is a nearby G2 subgiant whose mean density was recently measured with high precision using asteroseismology. We determine the ra
Externí odkaz:
http://arxiv.org/abs/0707.0333