2023
DOI: 10.3847/1538-4357/acbb64
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The Apparent Absence of Forward Scattering in the HD 53143 Debris Disk

Abstract: HD 53143 is a mature Sun-like star and host to a broad disk of dusty debris, including a cold outer ring of planetesimals near 90 au. Unlike most other inclined debris disks imaged at visible wavelengths, the cold disk around HD 53143 appears as disconnected “arcs” of material, with no forward-scattering side detected to date. We present new, deeper Hubble Space Telescope Imaging Spectrograph coronagraphic observations of the HD 53143 debris disk and show that the forward-scattering side of the disk remains un… Show more

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Cited by 5 publications
(3 citation statements)
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“…Nevertheless, given that it offers the narrowest IWA in visible wavelengths (Debes et al 2019), the increase of popularity in BAR5 (e.g., Schneider et al 2018;Walker et al 2021;Ren et al 2023;Debes et al 2023) can help provide better PSF templates in the future. Its potential in PSF modeling can be maximized when a PSF reference does not match that of the target in complicated scenarios (e.g., source-variability-induced color and thus PSF change in STIS: Stark et al 2023).…”
Section: Appendix A: Hst/stis Coronagraphic Imagingmentioning
confidence: 99%
“…Nevertheless, given that it offers the narrowest IWA in visible wavelengths (Debes et al 2019), the increase of popularity in BAR5 (e.g., Schneider et al 2018;Walker et al 2021;Ren et al 2023;Debes et al 2023) can help provide better PSF templates in the future. Its potential in PSF modeling can be maximized when a PSF reference does not match that of the target in complicated scenarios (e.g., source-variability-induced color and thus PSF change in STIS: Stark et al 2023).…”
Section: Appendix A: Hst/stis Coronagraphic Imagingmentioning
confidence: 99%
“…We demonstrate in both Figure 7 and Table 5.4 the improvement in computational efficiency with an increase in the number of NMF components. We note that the CPU is faster than the GPU for the smallest number of components (10). This is because of the memory transfer overhead, which increases linearly, from transferring arrays in the CPU to undergoing computations on the GPU.…”
Section: Improved Efficiency With a Gpumentioning
confidence: 99%
“…2 NMF has been used previously to image the debris disk around HD 32297 in Duchêne et al, 7 and for the detection of a faint arc around HD 129590 in Olofsson et al 8 It has also been used for the first dynamical detection of a companion driving a spiral arm in HD 100453 in Xie et al 9 NMF, however, relies largely on matrix multiplications, and since matrix multiplications have a complexity of O(n 3 ), utilizing a higher number of components in large surveys quickly becomes untenable. Stark et al 10 and Ren 11 have previously noted the difficulties of using NMF because of its computationally-intensive nature. The majority of the computation involved in matrix multiplication is easily parallelizable since each row/column pair is operated independently by one thread, and multiple threads can operate in tandem.…”
Section: Introductionmentioning
confidence: 99%