DIFFRACTO-ASTROMETRY WITH HUBBLE SPACE TELESCOPE AND ADAPTIVE OPTICS IMAGES

被引：0

作者：

Sanchez, L. J. ^{[1
]}

Ruelas-Mayorga, A. ^{[1
]}

Allen, C. ^{[1
]}

Poveda, A. ^{[1
]}

机构：

[1] Univ Nacl Autonoma Mexico, Inst Astron, Mexico City 04510, DF, Mexico

来源：

IV REUNION SOBRE ASTRONOMIA DINAMICA EN LATINOAMERICA (ADELA 2008) | 2008年 / 34卷

关键词：

astrometry; stars: kinematics; stars: open clusters and associations; techniques: high angular resolution; techniques: image processing;

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Following the lead established by Allen et al. (1974, 2004) in the study of internal movements in Trapezium-type systems, we decided to investigate the possibility of performing precision astrometry on Hubble Space Telescope (HST) images and on images obtained with Adaptive Optics (AO) systems. A region widely observed by the HST is that of the Orion Trapezium. The HST archive contains public domain observations of this Trapezium obtained with the WFPC/WFPC2 during a 16 year time interval (1991-2007). Applying new techniques (which we call Diffracto-Astrometry) we have determined the separation between components A and E of the Orion Trapezium with a precision reaching down to 0.03 '' on saturated images. These techniques appear to be very promising for exploiting, not only the important HST public image data base but also images obtained at telescopes using AO techniques. In order to demonstrate this last point, we use these same techniques to carry out precision astrometry on IR images of the Orion Trapezium obtained with the Multi-Conjugate Adaptive Optics (MCAO) system at the VLT.

引用

页码：10 / 13

页数：4

共 4 条

[1]

Allen C, 2004, REV MEX AST ASTR, V21, P195

[2]

Allen C., 1974, Revista Mexicana de Astronomia y Astrofisica, V1, P101

[3] Multi-conjugate adaptive optics images of the Trapezium cluster [J].

Bouy, H. ;

Kolb, J. ;

Marchetti, E. ;

Martin, E. L. ;

Huelamo, N. ;

Barrado y Navascus, D. .

ASTRONOMY & ASTROPHYSICS, 2008, 477 (02) :681-690

[4] The distance to the Orion Nebula [J].

Menten, K. M. ;

Reid, M. J. ;

Forbrich, J. ;

Brunthaler, A. .

ASTRONOMY & ASTROPHYSICS, 2007, 474 (02) :515-520

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