Revised wavelength and spectral response calibrations for AKARI near-infrared grism spectroscopy: Cryogenic phase

Baba Shunsuke; Nakagawa Takao; Shirahata Mai; Isobe Naoki; Usui Fumihiko; Ohyama Youichi; Onaka Takashi; Yano Kenichi; Kochi Chihiro

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Revised wavelength and spectral response calibrations for AKARI near-infrared grism spectroscopy: Cryogenic phase

机译：修订的AKARI近红外Grism光谱法的波长和光谱响应校准：低温相

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WeperformrevisedspectralcalibrationsfortheAKARInear-infraredgrismtocorrectquantitativelyfortheeffectofthewavelength-dependentrefractiveindex.Thenear-infraredgrismcoveringthewavelengthrangeof2.5a€“5.0a€‰??m,withaspectralresolvingpowerof120at3.6a€‰??m,isfoundtobecontaminatedbysecond-orderlightatwavelengthslongerthan4.9a€‰??m,whichisespeciallyseriousforredobjects.First,wepresentthewavelengthcalibrationconsideringtherefractiveindexofthegrismasafunctionofthewavelengthforthefirsttime.Wefindthattheprevioussolutionispositivelyshiftedbyupto0.01a€‰??mcomparedwiththerevisedwavelengthsat2.5a€“5.0a€‰??m.Inaddition,wedemonstratethatsecond-ordercontaminationoccursevenwithaperfectorder-sortingfilterowingtothewavelengthdependenceoftherefractiveindex.Secondly,thespectralresponsesofthesystemfromthefirst-andsecond-orderlightaresimultaneouslyobtainedfromtwotypesofstandardobjectswithdifferentcolors.Theresponsefromthesecond-orderlightsuggestsleakageoftheorder-sortingfilterbelow2.5a€‰??m.Therelationsbetweentheoutputofthedetectorandtheintensitiesofthefirst-andsecond-orderlightareformalizedbyamatrixequationthatcombinesthetwoorders.Theremovalofthecontaminatingsecond-orderlightcanbeachievedbysolvingthematrixequation.Thenewcalibrationextendstheavailablespectralcoverageofthegrismmodefrom4.9a€‰??mupto5.0a€‰??m.Therevisioncanbeusedtostudyspectralfeaturesfallingintheseextendedwavelengths,e.g.,thecarbonmonoxidefundamentalro-vibrationalabsorptionwithinnearbyactivegalacticnuclei.

机译：WeperformrevisedspectralcalibrationsfortheAKARInear-infraredgrismtocorrectquantitativelyfortheeffectofthewavelength-dependentrefractiveindex.Thenear-infraredgrismcoveringthewavelengthrangeof2.5a€“5.0A€‰-10米，withaspectralresolvingpowerof120at3.6a€‰-4 M，isfoundtobecontaminatedbysecond-orderlightatwavelengthslongerthan4.9a€‰-10米，whichisespeciallyseriousforredobjects.First，wepresentthewavelengthcalibrationconsideringtherefractiveindexofthegrismasafunctionofthewavelengthforthefirsttime.Wefindthattheprevioussolutionispositivelyshiftedbyupto0.01a €‰?? mcomparedwiththerevisedwavelengthsat2.5a€“5.0A€‰?? m.Inaddition，wedemonstratethatsecond-ordercontaminationoccursevenwithaperfectorder-sortingfilterowingtothewavelengthdependenceoftherefractiveindex.Secondly，thespectralresponsesofthesystemfromthefirst-andsecond-orderlightaresimultaneouslyobtainedfromtwotypesofstandardobjectswithdifferentcolors.Theresponsefromthesecond-orderlightsuggestsleakageoftheorder-sortingfilterbelow2.5a€‰?? m.Therelationsbetweenth eoutputofthedetectorandtheintensitiesofthefirst-andsecond-orderlightareformalizedbyamatrixequationthatcombinesthetwoorders.Theremovalofthecontaminatingsecond-orderlightcanbeachievedbysolvingthematrixequation.Thenewcalibrationextendstheavailablespectralcoverageofthegrismmodefrom4.9a€‰?? mupto5.0a€‰?? m.Therevisioncanbeusedtostudyspectralfeaturesfallingintheseextendedwavelengths，例如thecarbonmonoxidefundamentalro-vibrationalabsorptionwithinnearbyactivegalacticnuclei。

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《PASJ: Publications of the Astronomical Society of Japan》 |2016年第2期|共页
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Baba Shunsuke; Nakagawa Takao; Shirahata Mai; Isobe Naoki; Usui Fumihiko; Ohyama Youichi; Onaka Takashi; Yano Kenichi; Kochi Chihiro;
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1. Revised wavelength and spectral response calibrations for AKARI near-infrared grism spectroscopy: Post-cryogenic phase [J] . Baba Shunsuke, Nakagawa Takao, Usui Fumihiko, PASJ: Publications of the Astronomical Society of Japan . 2019,第1期

机译：修订的AKARI近红外Grism光谱仪的波长和光谱响应校准：低温后阶段
2. Revised wavelength and spectral response calibrations for AKARI near-infrared grism spectroscopy: Post-cryogenic phase [J] . Baba Shunsuke, Nakagawa Takao, Usui Fumihiko, PASJ: Publications of the Astronomical Society of Japan . 2019,第1期

机译：Akari近红外生物光谱的修正波长和光谱响应校准：低温阶段
3. Revised wavelength and spectral response calibrations for AKARI near-infrared grism spectroscopy: Cryogenic phase [J] . Baba Shunsuke, Nakagawa Takao, Shirahata Mai, PASJ: Publications of the Astronomical Society of Japan . 2016,第2期

机译：修订的AKARI近红外Grism光谱法的波长和光谱响应校准：低温相
4. Development of a spectral response calibration system using a wavelength-tunable laser and an integrating sphere [C] . Yasuji, Y. . 2002

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5. Long wavelength near-infrared hyperspectral imaging for classification and quality assessment of bulk samples of wheat from different growing locations and crop years. [D] . Sivakumar, Mahesh. 2011

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7. Revised wavelength and spectral response calibrations for AKARI near-infrared grism spectroscopy: Cryogenic phase [O] . Shunsuke Baba, Takao Nakagawa, Mai Shirahata, 2016

机译：Akari近红外生物光谱的修正波长和光谱响应校准：低温相
8. Measurements of the rate constant of HOsub2 NOsub2 Nsub2 --> HOsub2NOsub2 Nsub2 using near-infrared wavelength-modulation spectroscopy and UV-visible absorption spectroscopy [R] . Christensen, L. E., Okumura, M., Sander, S. P., 2004

机译：HOsub2 NOsub2 Nsub2 - >的速率常数的测量。 HOsub2NOsub2 Nsub2使用近红外波长调制光谱和紫外 - 可见吸收光谱

Revised wavelength and spectral response calibrations for AKARI near-infrared grism spectroscopy: Cryogenic phase

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