2 μ m Narrow – band Adaptive Optics Imaging in the Arches Cluster
نویسندگان
چکیده
Visiting Astronomer, Canada–France–Hawaii–Telescope, operated by the National Research Council of Canada, the Centre National de la Recherche Scientifique de France, and the University of Hawaii
منابع مشابه
The Arches Cluster Mass Function
We have analyzed H and Ks–band images of the Arches cluster obtained using the NIRC2 instrument on Keck with the laser guide star adaptive optics (LGS AO) system. With the help of the LGS AO system, we were able to obtain the deepest ever photometry for this cluster and its neighborhood, and derive the background-subtracted present-day mass function (PDMF) down to 1.3M⊙ for the 5–9 annulus of t...
متن کاملThe Proper Motion of the Arches Cluster with Keck Laser-guide Star Adaptive Optics
We present the first measurement of the proper motion of the young, compact Arches cluster near the Galactic center from near-infrared adaptive optics (AO) data taken with the recently commissioned laser-guide star (LGS) at the Keck 10 m telescope. The excellent astrometric accuracy achieved with LGS-AO provides the basis for a detailed comparison with VLT/NAOS-CONICA data taken 4.3 yr earlier....
متن کاملPhotometry of the Arches Cluster near the Galactic Center
We present Near-IR photometry of the Arches cluster, a young and massive stellar cluster near the Galactic center. We have analyzed the high resolution (FWHM ∼ 0.2) H and K ′ band images in the Galactic Center Demonstration Science Data Set, which were obtained with the Gemini/Hokupa’s adaptive optics (AO) system. We present the color-magnitude diagram, the luminosity function and the initial m...
متن کاملar X iv : a st ro - p h / 05 06 57 5 v 1 2 3 Ju n 20 05 The Arches Cluster - Evidence for a Truncated Mass Function ? 1
We have analyzed high-resolution, adaptive optics (AO) HK observations of the Arches cluster obtained with NAOS/CONICA. With a spatial resolution of 84 mas, the cluster center is uniquely resolved. From these data the present-day mass function (MF) of Arches is derived down to ∼ 4M⊙. The integrated MF as well as the core and 2 annulus MFs are consistent with a turn-over at 6−7M⊙. This turn-over...
متن کاملPhotonic Materials and Devices
Our recent advances in solid-state optoelectronic materials and devices will be reviewed. In the area of glass optics, fabrication of novel microstructured and multi-core fibers and their use in realizing single mode lasers will be summarized. In organic and plastic optics, photorefractive polymers for 3D display applications and nonlinear optical polymers for high speed modulators in RF photon...
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تاریخ انتشار 2001