Calibration of Herschel SPIRE FTS observations at different spectral resolutions

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dc.contributor.authorMarchili, N.
dc.contributor.authorHopwood, R.
dc.contributor.authorFulton, T.
dc.contributor.authorPolehampton, E. T.
dc.contributor.authorValtchanov, I.
dc.contributor.authorZaretski, J.
dc.contributor.authorNaylor, David A.
dc.contributor.authorGriffin, M. J.
dc.contributor.authorImhof, P.
dc.contributor.authorLim, T.
dc.contributor.authorLu, N.
dc.contributor.authorMakiwa, G.
dc.contributor.authorPearson, C.
dc.contributor.authorSpencer, Locke Dean
dc.date.accessioned2019-12-17T00:02:45Z
dc.date.available2019-12-17T00:02:45Z
dc.date.issued2017
dc.descriptionSherpa Romeo green journal. Permission to archive final published version.en_US
dc.description.abstractThe SPIRE Fourier Transform Spectrometer on-board the Herschel Space Observatory had two standard spectral resolution modes for science observations: high resolution (HR) and low resolution (LR), which could also be performed in sequence (H+LR). A comparison of the HR and LR resolution spectra taken in this sequential mode revealed a systematic discrepancy in the continuum level. Analysing the data at different stages during standard pipeline processing demonstrates that the telescope and instrument emission affect HR and H+LR observations in a systematically different way. The origin of this difference is found to lie in the variation of both the telescope and instrument response functions, while it is triggered by fast variation of the instrument temperatures. As it is not possible to trace the evolution of the response functions using housekeeping data from the instrument subsystems, the calibration cannot be corrected analytically. Therefore, an empirical correction for LR spectra has been developed, which removes the systematic noise introduced by the variation of the response functions.en_US
dc.description.peer-reviewYesen_US
dc.identifier.citationMarchili, N., Hopwood, R., Fulton, T., Polehampton, E. T., Valchanov, I., Zaretski, J., ...Spencer, L. (2017). Calibration of Herschel SPIRE FTS observations at different spectral resolution. Monthly Notices of the Royal Astronomical Society, 464(3), 3331-3342. doi:10.1093/mnras/stw2600en_US
dc.identifier.urihttps://hdl.handle.net/10133/5634
dc.language.isoen_USen_US
dc.publisherOxford University Pressen_US
dc.publisher.departmentDepartment of Physics and Astronomyen_US
dc.publisher.facultyArts and Scienceen_US
dc.publisher.institutionIAPS-INAFen_US
dc.publisher.institutionImperial College Londonen_US
dc.publisher.institutionUniversity of Lethbridgeen_US
dc.publisher.institutionBlue Sky Spectroscopyen_US
dc.publisher.institutionRutherford Appleton Laboratoryen_US
dc.publisher.institutionHerschel Science Centreen_US
dc.publisher.institutionCardiff Universityen_US
dc.publisher.institutionChinese Academy of Sciencesen_US
dc.publisher.institutionThe Open Universityen_US
dc.publisher.institutionUniversity of Oxforden_US
dc.publisher.urlhttps://doi.org/10.1093/mnras/stw2600en_US
dc.subjectInstrumentationen_US
dc.subjectSpectrographsen_US
dc.subjectData analysis - Space vehiclesen_US
dc.subjectInstruments - Techniquesen_US
dc.subjectSpectroscopicen_US
dc.subjectHerschel Spectral and Photometric REceiver
dc.subjectFourier Transform Spectrometer
dc.subjectSPIRE
dc.subject.lcshFourier transform spectroscopy
dc.subject.lcshHerschel Space Observatory (Spacecraft)
dc.subject.lcshCalibration
dc.titleCalibration of Herschel SPIRE FTS observations at different spectral resolutionsen_US
dc.typeArticleen_US
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