J/A+A/545/A97 0.8-6µm calibrated spectrum of 55 Cnc (Crossfield, 2012)
ACME stellar spectra.
I. Absolutely calibrated, mostly empirical flux densities of 55 Cancri and its
transiting planet 55 Cancri e.
Crossfield I.J.M.
<Astron. Astrophys. 545, A97 (2012)>
=2012A&A...545A..97C 2012A&A...545A..97C
ADC_Keywords: Stars, double and multiple; Stars, G-type; Planets; Spectroscopy
Keywords: infrared: stars - planetary systems - stars: individual (55 Cnc) -
stars: fundamental parameters - techniques: spectroscopic
Abstract:
The ACME Spectra project provides absolutely calibrated, mostly
empirical spectra of exoplanet host stars for use in analysis of the
stars and their planets. Spectra are obtained from ground-based
telescopes and are tied directly to calibrated ground- and space-based
photometry. The spectra remain only "mostly" empirical because of
telluric absorption, but interpolation of stellar models over the gaps
in wavelength coverage provides continuous stellar spectra. Among
other uses, the spectra are suitable for precisely converting observed
secondary eclipses (occultations) into absolute flux units with
minimal recourse to models. In this paper, I introduce ACME's methods
and present a calibrated spectrum of the nearby, super-Earth hosting
star 55 Cancri that spans the range from 0.81-5.05um.
Description:
This work presents the flux-calibrated spectrum of the star 55 Cancri,
as observed from with SpeX on the NASA IRTF, Mauna Kea Observatory,
Hawai'i, U.S.A. Reduction of the observations is described in the
associated paper.
Objects:
---------------------------------------------
RA (2000) DE Designation(s)
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08 52 36.1 +28 19 53 55 Cancri = 55 Cnc
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
55cancri.dat 25 8203 55 Cancri spectrum
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See also:
J/A+A/533/A114 : Transit of super-Earth 55 Cnc e (Demory+, 2011)
J/A+A/539/A28 : New transit photometry for super-Earth 55 Cnc e (Gillon+ 2012)
Byte-by-byte Description of file: 55cancri.dat
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Bytes Format Units Label Explanations
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1- 7 F7.5 um lambda [0.8/6] Wavelength (microns)
9- 17 F9.5 [W/m2/um] log(Flux) Flux Fλ , in W/m2/µm
19- 25 F7.5 --- err Fractional error in Flux
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Acknowledgements:
Ian Crossfield, ianc(at)mpia.de
(End) Ian Crossfield [MPIA, Heidelberg], Patricia Vannier [CDS] 06-Aug-2012