J/A+A/559/A33 Near-IR Spectrophotometry of GJ 3470b (Crossfield+, 2013)
Warm ice giant GJ 3470b.
I. A flat transmission spectrum indicates a hazy, low-methane, and/or
metal-rich atmosphere.
Crossfield I.J.M., Barman T., Hansen B.M.S., Howard A.W.
<Astron. Astrophys. 559, A33 (2013)>
=2013A&A...559A..33C 2013A&A...559A..33C
ADC_Keywords: Stars, double and multiple ; Planets ; Photometry
Keywords: techniques: spectroscopic - techniques: photometric -
planets and satellites: atmospheres - stars: individual: GJ 3470 -
eclipses
Description:
This work presents time-series relative photometry of the
planet-hosting star GJ 3470 during the transit of its 14 Earth-mass
planet. Observations were obtained with the MOSFIRE near-infrared
spectrograph from 2.09-2.36 micron, both in one single band and in six
smaller bands. Reduction of the observations is described in the
associated paper.
Objects:
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RA (2000) DE Designation(s)
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07 59 05.87 +15 23 29.5 GJ 3470 = LP 424-4
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
keck3470.dat 95 397 GJ 3470 light curves and instrumental parameters
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Byte-by-byte Description of file: keck3470.dat
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Bytes Format Units Label Explanations
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1- 13 F13.5 d BJD Mid-exposure timestamp for each frame, BJD_TDB
15- 19 F5.2 pix x Shift of spectra along dispersion direction
21- 26 F6.2 pix y Shift of spectra along spatial direction
28- 31 F4.2 pix w Instrumental seeing (FWHM of spectral trace)
33- 39 F7.5 --- AirM Airmass of observations, from FITS header.
41- 47 F7.5 --- d0 White-light relative light curve (2.09-2.36µm)
49- 55 F7.5 --- d1 Relative light curve, integrated 2.09-2.13µm
57- 63 F7.5 --- d2 Relative light curve, integrated 2.13-2.17µm
65- 71 F7.5 --- d3 Relative light curve, integrated 2.17-2.21µm
73- 79 F7.5 --- d4 Relative light curve, integrated 2.21-2.26µm
81- 87 F7.5 --- d5 Relative light curve, integrated 2.26-2.31µm
89- 95 F7.5 --- d6 Relative light curve, integrated 2.31-2.36µm
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Acknowledgements:
Ian Crossfield, ianc(at)mpia.de
(End) Patricia Vannier [CDS] 03-Sep-2013