Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Deriving stellar properties from photometry: maximizing information
  content and minimizing biases   I study the importance of the accurate calibration of photometric systems in
order to produce meaningful comparisons between the observed colors +
magnitudes and model SEDs. Possible sources of errors are discussed and two
examples are analyzed. I show that well-calibrated Tycho-2 photometry is stable
and precise enough for such comparisons. On the contrary, the available
calibrations for Johnson UBV photometry yield relative large systematic errors,
which has prompted me to develop a new, more precise calibration. The
advantages of multicolor photometry over the standard single-color + magnitude
diagrams for the derivation of physical properties of stars (elimination of
degeneracies, inclusion of multiple parameters, avoidance of linearizing
approximations, possibility of a more precise treatment of errors) are
discussed through the use of CHORIZOS, a code developed specifically for this
purpose.

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The categories of this paper are: q-fin
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The categories of this paper are: econ
13
The categories of this paper are: quant-ph
4
The categories of this paper are: cond-mat
1
The categories of this paper are: cs
16
The categories of this paper are: stat
7
The categories of this paper are: hep-th
22
The categories of this paper are: chao-dyn
31
The categories of this paper are: ao-sci
11
The categories of this paper are: hep-lat
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The categories of this paper are: dg-ga
28
The categories of this paper are: alg-geom
15
The categories of this paper are: nucl-ex
21
The categories of this paper are: adap-org
9
The categories of this paper are: nlin
34
The categories of this paper are: chem-ph