%0 Journal Article
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%3 galactic foreground, Bersanelli, Marco.pdf
%N 1
%@secondarytype PRE PI
%P 109-117
%4 sid.inpe.br/iris@1916/2005/06.06.12.35
%X We report limits on the Galactic foreground emission contribution to the Background Emission Anisotropy Scanning Telescope (BEAST) Ka- and Q-band CMB anisotropy maps. We estimate the contribution from the cross-correlations between these maps and the foreground emission templates of an H alpha map, a destriped version of the Haslam et al. 408 MHz map, and a combined 100 mu m IRAS DIRBE map. Our analysis samples the BEAST similar to 10 degrees declination band into 24 one-hour (R. A.) wide sectors with similar to 7900 pixels each, where we calculate (1) the linear correlation coefficient between the anisotropy maps and the templates; (2) the coupling constants between the specific intensity units of the templates and the antenna temperature at the BEAST frequencies; and (3) the individual foreground contributions to the BEAST anisotropy maps. The peak sector contributions of the contaminants in the Ka-band are of 56.5% free-free with a coupling constant of 8.3 +/- 0.4 mu K R-1, and 67.4% dust with 45.0 +/- 2.0 mu K MJy(-1) sr(-1). In the Q band the corresponding values are of 64.4% free-free with 4.1 +/- 0.2 mu K R-1 and 67.5% dust with 24.0 +/- 1.0 mu K MJy(-1) sr(-1). Using a lower limit of 10% in the relative uncertainty of the coupling constants, we can constrain the sector contributions of each contaminant in both maps to <20% in 21 (free-free), 19 (dust), and 22 (synchrotron) sectors. At this level, all these sectors are found outside of the vertical bar b vertical bar = 14.degrees 6 region. By performing the same correlation analysis as a function of Galactic scale height, we conclude that the region within b = +/- 17.degrees 5 should be removed from the BEAST maps for CMB studies in order to keep individual Galactic contributions below similar to 1% of the map's rms.
%8 May
%@group DAS-INPE-MCT-BR
%@issn 0067-0049
%@issn 1538-4365
%@affiliation Instituto Naciona de Pesquisas Espaciais, Divisão Astrofisica, (INPE.DAS)
%@affiliation Univ Milan, Dipartimento Fis, Milan, I-20133 Italy
%@affiliation CNR, IASF, Sez Bologna, Bologna, I-40129 Italy
%@affiliation Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA
%@affiliation Universidade Federal de Itajuba, Departamento de  Quimica e Fisica (UNIFEI)
%@affiliation Univ Calif, White Mt Res Stn, CA 93514 USA
%@affiliation Univ Illinois, Dept Astron, Urbana, IL 61801 USA
%@affiliation CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA
%D 2005
%A Mejia, J.,
%A Bersanelli, M.,
%A Burigana, C.,
%A Childers, J.,
%A Figueiredo, N.,
%A Kangas, M.,
%A Lubin, P.,
%A Maino, D.,
%A Mandolesi, N.,
%A Marvil, J.,
%A Meinhold, P.,
%A O'Dwyer, I.,
%A O'Neill, H.,
%A Platania, P.,
%A Seiffert, M.,
%A Stebor, N.,
%A Tello, C.,
%A Vilella Neto, Thyrso,
%A Wandelt, B.,
%A Souza, Carlos Alexandre Wuensche De,
%@area CEA
%T Galactic foreground contribution to the BEAST Cosmic Microwave Background anisotropy maps
%@visibility shown
%@copyholder SID/SCD
%B Astrophysical Journal Supplement Series
%V 158
%@dissemination WEBSCI; PORTALCAPES.
%K cosmic microwave background, cosmology : observations, ISM : structure - SCANNING-TELESCOPE BEAST, SKY MAPS, FULL-SKY, EMISSION, DUST, TEMPLATE.
%@secondarykey INPE-15120-PRE/10027
%2 sid.inpe.br/iris@1916/2005/06.06.12.35.17