Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Observed spectral energy distribution of the thermal emission from the
  dayside of WASP-46b   We aim to construct a spectral energy distribution (SED) for the emission
from the dayside atmosphere of the hot Jupiter WASP-46b and to investigate its
energy budget. We observed a secondary eclipse of WASP-46b simultaneously in
the g'r'i'z'JHK bands using the GROND instrument on the MPG/ESO 2.2m telescope.
Eclipse depths of the acquired light curves were derived to infer the
brightness temperatures at multibands that cover the SED peak. We report the
first detection of the thermal emission from the dayside of WASP-46b in the K
band at 4.2-sigma level and tentative detections in the H (2.5-sigma) and J
(2.3-sigma) bands, with flux ratios of 0.253 +0.063/-0.060%, 0.194 +/- 0.078%,
and 0.129 +/- 0.055%, respectively. The derived brightness temperatures (2306
+177/-187K, 2462 +245/-302K, and 2453 +198/-258K, respectively) are consistent
with an isothermal temperature profile of 2386K, which is significantly higher
than the dayside-averaged equilibrium temperature, indicative of very poor heat
redistribution efficiency. We also investigate the tentative detections in the
g'r'i' bands and the 3-sigma upper limit in the z' band, which might indicate
the existence of reflective clouds if these tentative detections do not arise
from systematics.

4
The categories of this paper are: cond-mat
5
The categories of this paper are: gr-qc
19
The categories of this paper are: eess
13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
3
The categories of this paper are: physics
23
The categories of this paper are: solv-int
30
The categories of this paper are: q-alg
7
The categories of this paper are: hep-th
31
The categories of this paper are: ao-sci
36
The categories of this paper are: cmp-lg
25
The categories of this paper are: patt-sol
26
The categories of this paper are: bayes-an
35
The categories of this paper are: mtrl-th
15
The categories of this paper are: nucl-ex