... as planned, and no problems were reported 1.22 Completed WF/PC-2 6737 (Imaging Reflection Nebulosity in Three Post-AGB Objects) The WF/PC-2 was used to make observations of the reflectionnebula surrounding the post-AGB objects HD179821 and HD161796 ...
... from circumstellar material, an asymmetrical distribution of light about the line of sight on the near edge of the disk, enhanced brightness along the near edge of the disk due to forward scattering, and a compact reflectionnebula near the secondary star ...
... H.M. Adorf, P. Benvenuti, A. Caulet, R. Fosbury, R. Hook 1 Introduction Previous observations for calibration of the FOC polarizers (proposals 1521 and 3873) have been of polarized, nebulous objects, the jet of M 87 and the reflectionnebula Lick Hff 233 ...
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Ссылки http://www.stsci.edu/ftp/instrument_news/FOC/Foc_isr/foc_isr069.ps -- 80.0 Кб -- 04.10.1994 Похожие документы
... This has already been done for Extended Red Emission, which is an optical emission feature of dust, using HST ACS NICMOS imaging of narrow filaments in the reflectionnebula NGC 7023 (Witt et al. ...
... To establish the zeropoint of the polarizer orientation it is necessary to observe a highly polarized source; a reflectionnebula was chosen for its large size and 10-20% polarization. ...
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Ссылки http://www.stsci.edu/hst/wfpc2/documents/isr/wfpc2_isr9507.pdf -- 453.3 Кб -- 05.02.2013 Похожие документы
... To quantify this effect, the IRAC instrument supp ort team conducted measurements of HI I regions and bright reflectionnebula previously imaged by MSX at 8.3 µm and with good quality ISO SWS sp ectra to provide SED information. ...
... Werner et al. (1983) were the first to report that at 4.8 m the BN / KL complex is predominantly a reflectionnebula, but since the albedo of astronomical silicates drops by 2 orders of magnitude between No. ...
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Ссылки http://www.stsci.edu/~robberto/Main/Recent%20papers/ApJ129.1534.pdf -- 1795.0 Кб -- 13.01.2006 Похожие документы