Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Characterizing the stellar photospheres and near-infrared excesses in
  accreting T Tauri systems   Using NASA IRTF SpeX data from 0.8 to 4.5 $\mu$m, we determine
self-consistently the stellar properties and excess emission above the
photosphere for a sample of classical T Tauri stars (CTTS) in the Taurus
molecular cloud with varying degrees of accretion. This process uses a
combination of techniques from the recent literature as well as observations of
weak-line T Tauri stars (WTTS) to account for the differences in surface
gravity and chromospheric activity between the TTS and dwarfs, which are
typically used as photospheric templates for CTTS. Our improved veiling and
extinction estimates for our targets allow us to extract flux-calibrated
spectra of the excess in the near-infrared. We find that we are able to produce
an acceptable parametric fit to the near-infrared excesses using a combination
of up to three blackbodies. In half of our sample, two blackbodies at
temperatures of 8000 K and 1600 K suffice. These temperatures and the
corresponding solid angles are consistent with emission from the accretion
shock on the stellar surface and the inner dust sublimation rim of the disk,
respectively. In contrast, the other half requires three blackbodies at 8000,
1800, and 800 K, to describe the excess. We interpret the combined two cooler
blackbodies as the dust sublimation wall with either a contribution from the
disk surface beyond the wall or curvature of the wall itself, neither of which
should have single-temperature blackbody emission. In these fits, we find no
evidence of a contribution from optically thick gas inside the inner dust rim.

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The categories of this paper are: patt-sol
2
The categories of this paper are: math
5
The categories of this paper are: gr-qc
22
The categories of this paper are: chao-dyn
7
The categories of this paper are: hep-th
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
3
The categories of this paper are: physics
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The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
18
The categories of this paper are: econ
10
The categories of this paper are: q-bio
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The categories of this paper are: solv-int