J/A+A/608/A71 J,H,K spectroscopy of HD 106906 b (Daemgen+, 2017)
High signal-to-noise spectral characterization of the planetary-mass object
HD 106906b.
Daemgen S., Todorov K., Quanz S.P., Meyer M.R., Mordasini C., Marleau G.-D.,
Fortney J.
<Astron. Astrophys. 608, A71 (2017)>
=2017A&A...608A..71D 2017A&A...608A..71D (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Planets ; Spectra, infrared
Keywords: planets and satellites: individual: HD 106906b -
techniques: imaging spectroscopy
Abstract:
Directly imaged planets are ideal candidates for spectroscopic
characterization of their atmospheres. The angular separations that
are typically close to their host stars, however, reduce the
achievable contrast and thus signal-to-noise ratios (S/N).
We spectroscopically characterize the atmosphere of HD 106906 b, which
is a young low-mass companion near the deuterium burning limit. The
wide separation from its host star of 7.1" makes it an ideal candidate
for high S/N and high-resolution spectroscopy. We aim to derive new
constraints on the spectral type, effective temperature, and
luminosity of HD 106906 b and also to provide a high S/N template
spectrum for future characterization of extrasolar planets.
We obtained 1.1-2.5um integral field spectroscopy with the VLT/SINFONI
instrument with a spectral resolution of R~=2000-4000. New estimates
of the parameters of HD 106906 b are derived by analyzing spectral
features, comparing the extracted spectra to spectral catalogs of
other low-mass objects, and fitting with theoretical isochrones.
Description:
Fully reduced spectra of HD 106906b in J (1.10-1.35mu), H
(1.45-1.81mu), and K-band (1.94-2.46mu). Spectra were observed with
SINFONI/VLT integral field spectroscopy at a spectral resolution of
∼2000 (J), ∼3000 (H), ∼4000 (K).
Objects:
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RA (2000) DE Designation(s)
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12 17 53.19 -55 58 31.9 HD 106906b = HD 106906b
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
hband.dat 22 1893 H-band spectrum
jband.dat 22 1752 J-band spectrum
kband.dat 22 2097 K-band spectrum
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Byte-by-byte Description of file: hband.dat jband.dat kband.dat
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Bytes Format Units Label Explanations
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1- 7 F7.5 um lambda Central wavelength for each pixel
9- 15 F7.4 --- NFlux Flux, normalized to 1 at reference wavelength (1)
17- 22 F6.4 --- e_NFlux Flux uncertainty (1)
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Note (1): Fluxes are normalized at the following reference wavelengths:
1.3um (J), 1.7um (H), 2.2um (K).
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Acknowledgements:
Sebastian Daemgen, daemgens(at)phys.ethz.ch
(End) Patricia Vannier [CDS] 21-Aug-2017