Absolute calibration and characterization of the multiband imaging photometer for Spitzer. III. An asteroid-based calibration of MIPS at 160 μm
— University of Arizona Skip to main navigation Skip to search Skip to main content University of Arizona Home Home Profiles Departments and Centers Scholarly Works Activities Grants Datasets Prizes Search by expertise, name or affiliation Absolute calibration and characterization of the multiband imaging photometer for Spitzer. III. An asteroid-based calibration of MIPS at 160 μm J. A. Stansberry, K. D. Gordon, B. Bhattacharya, C. W. Engelbracht, G. H. Rieke, F. R. Marleau, D. Fadda, D. T. Frayer, A. Noriega-Crespo, S. Wachter, E. T. Young, T. G. Müller, D. M. Kelly, M. Blaylock, D. Henderson, G. Neugebauer, J. W. Beeman, E. E. Haller Steward Observatory Lunar and Planetary Lab Planetary Sciences Research output: Contribution to journal › Article › peer-review 99 Scopus citations Overview Fingerprint Abstract We describe the absolute calibration of the Multiband Imaging Photometer for Spitzer (MIPS) 160 μm channel. After the on-orbit discovery of a near-IR ghost image that dominates the signal for sources hotter than about 2000 K, we adopted a strategy utilizing asteroids to transfer the absolute calibrations of the MIPS 24 and 70 μm channels to the 160 μm channel. Near-simultaneous observations at all three wavelengths are taken, and photometry at the two shorter wavelengths is fit using the standard thermal model. The 160 μm flux density is predicted from those fits and compared with the observed 160 μm signal to derive the conversion from instrumental units to surface brightness. The calibration factor we derive is 41.7 MJy sr -1 MIPS160 -1 (MIPS 160 being the instrumental units). The scatter in the individual measurements of the calibration factor, as well as an assessment of the external uncertainties inherent in the calibration, lead us to adopt an uncertainty of 5.0 MJy sr -1 MIPS160 -1 (12%) for the absolute uncertainty on the 160 μm flux density of a particular source as determined from a single measurement. For sources brighter than about 2 Jy, nonlinearity in the response of the 160 μm detectors produces an underestimate of the flux density: for objects as bright as 4 Jy, measured flux densities are likely to be ≲ 20% too low. This calibration has been checked against that of the ISO (using ULIRGs) and IRAS (using IRAS-derived diameters), and is consistent with those at the 5% level. Original language English (US) Pages (from-to) 1038-1051 Number of pages 14 Journal Publications of the Astronomical Society of the Pacific Volume 119 Issue number 859 DOIs https://doi.org/10.1086/521880 State Published - 2007 ASJC Scopus subject areas Astronomy and Astrophysics Space and Planetary Science Access to Document 10.1086/521880 Other files and links Link to publication in Scopus Fingerprint Dive into the research topics of 'Absolute calibration and characterization of the multiband imaging photometer for Spitzer. III. An asteroid-based calibration of MIPS at 160 μm'. Together they form a unique fingerprint. photometer Earth & Environmental Sciences 100% asteroids Physics & Astronomy 97% asteroid Earth & Environmental Sciences 90% photometers Physics & Astronomy 75% flux density Physics & Astronomy 67% calibration Earth & Environmental Sciences 57% Infrared Astronomy Satellite Physics & Astronomy 50% characterization Physics & Astronomy 46% View full fingerprint Cite this APA Standard Harvard Vancouver Author BIBTEX RIS Stansberry, J. A., Gordon, K. D., Bhattacharya, B., Engelbracht, C. W., Rieke, G. H., Marleau, F. R., Fadda, D., Frayer, D. T., Noriega-Crespo, A., Wachter, S., Young, E. T., Müller, T. G., Kelly, D. M., Blaylock, M., Henderson, D., Neugebauer, G., Beeman, J. W., & Haller, E. E. (2007). Absolute calibration and characterization of the multiband imaging photometer for Spitzer. III. An asteroid-based calibration of MIPS at 160 μm. Publications of the Astronomical Society of the Pacific, 119(859), 1038-1051. https://doi.org/10.1086/521880 Absolute calibration and characterization of the multiband imaging photometer for Spitzer. III. An asteroid-based calibration of MIPS at 160 μm. / Stansberry, J. A.; Gordon, K. D.; Bhattacharya, B.; Engelbracht, C. W.; Rieke, G. H.; Marleau, F. R.; Fadda, D.; Frayer, D. T.; Noriega-Crespo, A.; Wachter, S.; Young, E. T.; Müller, T. G.; Kelly, D. M.; Blaylock, M.; Henderson, D.; Neugebauer, G.; Beeman, J. W.; Haller, E. E. In: Publications of the Astronomical Society of the Pacific, Vol. 119, No. 859, 2007, p. 1038-1051. Research output: Contribution to journal › Article › peer-review Stansberry, JA, Gordon, KD, Bhattacharya, B, Engelbracht, CW, Rieke, GH, Marleau, FR, Fadda, D, Frayer, DT, Noriega-Crespo, A, Wachter, S, Young, ET, Müller, TG, Kelly, DM, Blaylock, M, Henderson, D, Neugebauer, G, Beeman, JW & Haller, EE 2007, 'Absolute calibration and characterization of the multiband imaging photometer for Spitzer. III. An asteroid-based calibration of MIPS at 160 μm', Publications of the Astronomical Society of the Pacific, vol. 119, no. 859, pp. 1038-1051. https://doi.org/10.1086/521880 Stansberry JA, Gordon KD, Bhattacharya B, Engelbracht CW, Rieke GH, Marleau FR et al. Absolute calibration and characterization of the multiband imaging photometer for Spitzer. III. An asteroid-based calibration of MIPS at 160 μm. Publications of the Astronomical Society of the Pacific. 2007;119(859):1038-1051. https://doi.org/10.1086/521880 Stansberry, J. A. ; Gordon, K. D. ; Bhattacharya, B. ; Engelbracht, C. W. ; Rieke, G. H. ; Marleau, F. R. ; Fadda, D. ; Frayer, D. T. ; Noriega-Crespo, A. ; Wachter, S. ; Young, E. T. ; Müller, T. G. ; Kelly, D. M. ; Blaylock, M. ; Henderson, D. ; Neugebauer, G. ; Beeman, J. W. ; Haller, E. E. / Absolute calibration and characterization of the multiband imaging photometer for Spitzer. III. An asteroid-based calibration of MIPS at 160 μm. In: Publications of the Astronomical Society of the Pacific. 2007 ; Vol. 119, No. 859. pp. 1038-1051. @article{92049a47493249baa1e28b861cf069cf, title = "Absolute calibration and characterization of the multiband imaging photometer for Spitzer. III. An asteroid-based calibration of MIPS at 160 μm", abstract = "We describe the absolute calibration of the Multiband Imaging Photometer for Spitzer (MIPS) 160 μm channel. After the on-orbit discovery of a near-IR ghost image that dominates the signal for sources hotter than about 2000 K, we adopted a strategy utilizing asteroids to transfer the absolute calibrations of the MIPS 24 and 70 μm channels to the 160 μm channel. Near-simultaneous observations at all three wavelengths are taken, and photometry at the two shorter wavelengths is fit using the standard thermal model. The 160 μm flux density is predicted from those fits and compared with the observed 160 μm signal to derive the conversion from instrumental units to surface brightness. The calibration factor we derive is 41.7 MJy sr -1 MIPS160 -1 (MIPS 160 being the instrumental units). The scatter in the individual measurements of the calibration factor, as well as an assessment of the external uncertainties inherent in the calibration, lead us to adopt an uncertainty of 5.0 MJy sr -1 MIPS160 -1 (12%) for the absolute uncertainty on the 160 μm flux density of a particular source as determined from a single measurement. For sources brighter than about 2 Jy, nonlinearity in the response of the 160 μm detectors produces an underestimate of the flux density: for objects as bright as 4 Jy, measured flux densities are likely to be ≲ 20% too low. This calibration has been checked against that of the ISO (using ULIRGs) and IRAS (using IRAS-derived diameters), and is consistent with those at the 5% level.", author = "Stansberry, {J. A.} and Gordon, {K. D.} and B. Bhattacharya and Engelbracht, {C. W.} and Rieke, {G. H.} and Marleau, {F. R.} and D. Fadda and Frayer, {D. T.} and A. Noriega-Crespo and S. Wachter and Young, {E. T.} and M{\"u}ller, {T. G.} and Kelly, {D. M.} and M. Blaylock and D. Henderson and G. Neugebauer and Beeman, {J. W.} and Haller, {E. E.}", year = "2007", doi = "10.1086/521880", language = "English (US)", volume = "119", pages = "1038--1051", journal = "Publications of the Astronomical Society of the Pacific", issn = "0004-6280", publisher = "University of Chicago", number = "859", } TY - JOUR T1 - Absolute calibration and characterization of the multiband imaging photometer for Spitzer. III. An asteroid-based calibration of MIPS at 160 μm AU - Stansberry, J. A. AU - Gordon, K. D. AU - Bhattacharya, B. AU - Engelbracht, C. W. AU - Rieke, G. H. AU - Marleau, F. R. AU - Fadda, D. AU - Frayer, D. T. AU - Noriega-Crespo, A. AU - Wachter, S. AU - Young, E. T. AU - Müller, T. G. AU - Kelly, D. M. AU - Blaylock, M. AU - Henderson, D. AU - Neugebauer, G. AU - Beeman, J. W. AU - Haller, E. E. PY - 2007 Y1 - 2007 N2 - We describe the absolute calibration of the Multiband Imaging Photometer for Spitzer (MIPS) 160 μm channel. After the on-orbit discovery of a near-IR ghost image that dominates the signal for sources hotter than about 2000 K, we adopted a strategy utilizing asteroids to transfer the absolute calibrations of the MIPS 24 and 70 μm channels to the 160 μm channel. Near-simultaneous observations at all three wavelengths are taken, and photometry at the two shorter wavelengths is fit using the standard thermal model. The 160 μm flux density is predicted from those fits and compared with the observed 160 μm signal to derive the conversion from instrumental units to surface brightness. The calibration factor we derive is 41.7 MJy sr -1 MIPS160 -1 (MIPS 160 being the instrumental units). The scatter in the individual measurements of the calibration factor, as well as an assessment of the external uncertainties inherent in the calibration, lead us to adopt an uncertainty of 5.0 MJy sr -1 MIPS160 -1 (12%) for the absolute uncertainty on the 160 μm flux density of a particular source as determined from a single measurement. For sources brighter than about 2 Jy, nonlinearity in the response of the 160 μm detectors produces an underestimate of the flux density: for objects as bright as 4 Jy, measured flux densities are likely to be ≲ 20% too low. This calibration has been checked against that of the ISO (using ULIRGs) and IRAS (using IRAS-derived diameters), and is consistent with those at the 5% level. AB - We describe the absolute calibration of the Multiband Imaging Photometer for Spitzer (MIPS) 160 μm channel. After the on-orbit discovery of a near-IR ghost image that dominates the signal for sources hotter than about 2000 K, we adopted a strategy utilizing asteroids to transfer the absolute calibrations of the MIPS 24 and 70 μm channels to the 160 μm channel. Near-simultaneous observations at all three wavelengths are taken, and photometry at the two shorter wavelengths is fit using the standard thermal model. The 160 μm flux density is predicted from those fits and compared with the observed 160 μm signal to derive the conversion from instrumental units to surface brightness. The calibration factor we derive is 41.7 MJy sr -1 MIPS160 -1 (MIPS 160 being the instrumental units). The scatter in the individual measurements of the calibration factor, as well as an assessment of the external uncertainties inherent in the calibration, lead us to adopt an uncertainty of 5.0 MJy sr -1 MIPS160 -1 (12%) for the absolute uncertainty on the 160 μm flux density of a particular source as determined from a single measurement. For sources brighter than about 2 Jy, nonlinearity in the response of the 160 μm detectors produces an underestimate of the flux density: for objects as bright as 4 Jy, measured flux densities are likely to be ≲ 20% too low. This calibration has been checked against that of the ISO (using ULIRGs) and IRAS (using IRAS-derived diameters), and is consistent with those at the 5% level. UR - http://www.scopus.com/inward/record.url?scp=35348912408&partnerID=8YFLogxK UR - http://www.scopus.com/inward/citedby.url?scp=35348912408&partnerID=8YFLogxK U2 - 10.1086/521880 DO - 10.1086/521880 M3 - Article AN - SCOPUS:35348912408 VL - 119 SP - 1038 EP - 1051 JO - Publications of the Astronomical Society of the Pacific JF - Publications of the Astronomical Society of the Pacific SN - 0004-6280 IS - 859 ER - Powered by Pure, Scopus & Elsevier Fingerprint Engine™ © 2022 Elsevier B.V We use cookies to help provide and enhance our service and tailor content. By continuing you agree to the use of cookies Log in to Pure About web accessibility Contact us
