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<h1><b><font size=3 face="Times New Roman"><span style='font-size:12.0pt;
font-weight:normal'>ALMA</span></font></b><font size=3><span
style='font-size:12.0pt;font-weight:normal'> MEMO #492 <br>
<br>
</span></font><font size=3><span style='font-size:12.0pt;font-weight:normal'>ALMA</span></font><font
size=3><span style='font-size:12.0pt;font-weight:normal'> Calibration - Example
of Scientific Impact </span></font></h1>
<h2><b><font size=3 face="Times New Roman"><span style='font-size:12.0pt;
font-weight:normal'>Chris Carilli</span></font></b><font face=Helvetica><span
style='font-family:Helvetica'><br>
</span></font><font size=3><span style='font-size:12.0pt;font-weight:normal'>National
Radio Astronomy Observatory<br>
<br>
2004-05-04 </span></font></h2>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Keywords: </span></font>ALMA calibration, gallaxies - star forming,
high redshift, dust - spectral energy distribution</p>
<p><font size=3 face="Times New Roman"><span style='font-size:12.0pt'>An
example of the scientific impact of band-to-band calibration errors for </span></font>ALMA
is presented. The specific example entails constraining the temperature of a
modified black body at high redshift. This experiment is one of the key goals
in the study of the dust obscured star formation history of the universe. We
find that 3% calibration errors between 250 and 350 GHz will constrain (at 3ó )
the temperature of a warm (~50 K) dust compnent to only 20°, while 10%
calibration errors between 250 and 650 GHz provide a 3ó contraint of 10°. </p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>View a pdf version of ALMA Memo #492. </span></font></p>
<p class=MsoNormal><u><font size=2 color=blue face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:blue'><a
href="http://www.alma.nrao.edu/memos/html-memos/alma492/memo492.pdf">http://www.alma.nrao.edu/memos/html-memos/alma492/memo492.pdf</a></span></font></u></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span></font></p>
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