29a. Working Group on Absolute Spectrophotometry
نویسندگان
چکیده
منابع مشابه
Absolute spectrophotometry of northern compact planetary nebulae ⋆
We present medium-dispersion spectra and narrowband images of six northern compact planetary nebulae (PNe): BoBn 1, DdDm 1, IC 5117, M 1-5, M 1-71, and NGC 6833. From broad-slit spectra, total absolute fluxes and equivalent widths were measured for all observable emission lines. High signal-to-noise emission line fluxes of Hα, Hβ, [Oiii], [Nii], and HeI may serve as emission line flux standards...
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The absolute order on the hyperoctahedral group Bn is investigated. Using a poset fiber theorem, it is proved that the order ideal of this poset generated by the Coxeter elements is homotopy Cohen–Macaulay. This method results in a new proof of Cohen–Macaulayness of the absolute order on the symmetric group. Moreover, it is shown that every closed interval in the absolute order on Bn is shellab...
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∗DIMACS was founded as a National Science Foundation Science and Technology Center. It is a joint project of Rutgers University, Princeton University, AT&T Labs-Research, Bell Labs, NEC Laboratories America, and Telcordia Technologies, with affiliated partners Avaya Labs, Georgia Institute of Technology, HP Labs, IBM Research, Microsoft Research, Rensselaer Polytechnic Institute, and Stevens In...
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ژورنال
عنوان ژورنال: Transactions of the International Astronomical Union
سال: 1970
ISSN: 0251-107X
DOI: 10.1017/s0251107x00023841