SKYSURF-11: A New Zodiacal Light Model Optimized for Optical Wavelengths
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arXiv
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| Auteurs principaux: | , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866910173548773376 |
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| author | O'Brien, Rosalia Arendt, Richard G. Windhorst, Rogier A. Acharya, Tejovrash Calamida, Annalisa Carleton, Timothy Carter, Delondrae Cohen, Seth H. Dwek, Eli Frye, Brenda L. Jansen, Rolf A. Kenyon, Scott J. Koekemoer, Anton M. MacKenty, John Miller, Megan Ortiz III, Rafael Smith, Peter C. B. Tompkins, Scott A. |
| author_facet | O'Brien, Rosalia Arendt, Richard G. Windhorst, Rogier A. Acharya, Tejovrash Calamida, Annalisa Carleton, Timothy Carter, Delondrae Cohen, Seth H. Dwek, Eli Frye, Brenda L. Jansen, Rolf A. Kenyon, Scott J. Koekemoer, Anton M. MacKenty, John Miller, Megan Ortiz III, Rafael Smith, Peter C. B. Tompkins, Scott A. |
| contents | We present an improved zodiacal light model, optimized for optical wavelengths, using archival Hubble Space Telescope (HST) imaging from the SKYSURF program. The Kelsall et al. 1998 model used infrared imaging from the Diffuse Infrared Background Experiment (DIRBE) on board the Cosmic Background Explorer to create a 3D structure of the interplanetary dust cloud. However, this model cannot accurately represent zodiacal light emission outside of DIRBE's nominal wavelength bandpasses, the bluest of which is 1.25 micron. We present a revision to this model (called ZodiSURF) that incorporates analytical forms of both the scattering phase function and albedo as a function of wavelength, which are empirically determined across optical wavelengths (0.3-1.6 micron) from over 5,000 HST sky surface brightness (sky-SB) measurements. This refined model results in significantly improved predictions of zodiacal light emission at these wavelengths and for Sun angles greater than 80 deg. Fits to HST data show an uncertainty in the model of ~4.5%. Remarkably, the HST sky-SB measurements show an excess of residual diffuse light (HST Sky - ZodiSURF - Diffuse Galactic Light) of 0.013 +/- 0.006 MJy/sr. We suggest that a very dim spherical dust cloud may need to be included in the zodiacal light model, which we present here as a toy model. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_18231 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | SKYSURF-11: A New Zodiacal Light Model Optimized for Optical Wavelengths O'Brien, Rosalia Arendt, Richard G. Windhorst, Rogier A. Acharya, Tejovrash Calamida, Annalisa Carleton, Timothy Carter, Delondrae Cohen, Seth H. Dwek, Eli Frye, Brenda L. Jansen, Rolf A. Kenyon, Scott J. Koekemoer, Anton M. MacKenty, John Miller, Megan Ortiz III, Rafael Smith, Peter C. B. Tompkins, Scott A. Cosmology and Nongalactic Astrophysics Earth and Planetary Astrophysics Astrophysics of Galaxies We present an improved zodiacal light model, optimized for optical wavelengths, using archival Hubble Space Telescope (HST) imaging from the SKYSURF program. The Kelsall et al. 1998 model used infrared imaging from the Diffuse Infrared Background Experiment (DIRBE) on board the Cosmic Background Explorer to create a 3D structure of the interplanetary dust cloud. However, this model cannot accurately represent zodiacal light emission outside of DIRBE's nominal wavelength bandpasses, the bluest of which is 1.25 micron. We present a revision to this model (called ZodiSURF) that incorporates analytical forms of both the scattering phase function and albedo as a function of wavelength, which are empirically determined across optical wavelengths (0.3-1.6 micron) from over 5,000 HST sky surface brightness (sky-SB) measurements. This refined model results in significantly improved predictions of zodiacal light emission at these wavelengths and for Sun angles greater than 80 deg. Fits to HST data show an uncertainty in the model of ~4.5%. Remarkably, the HST sky-SB measurements show an excess of residual diffuse light (HST Sky - ZodiSURF - Diffuse Galactic Light) of 0.013 +/- 0.006 MJy/sr. We suggest that a very dim spherical dust cloud may need to be included in the zodiacal light model, which we present here as a toy model. |
| title | SKYSURF-11: A New Zodiacal Light Model Optimized for Optical Wavelengths |
| topic | Cosmology and Nongalactic Astrophysics Earth and Planetary Astrophysics Astrophysics of Galaxies |
| url | https://arxiv.org/abs/2510.18231 |