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PreprintCC BY 4.0arXiv

The shell around VY Canis Majoris in SPHEREx is likely an artifact

Abstract

Recently, the presence of a large shell around the bright hypergiant star VY Canis Majoris was reported in images from the SPHEREx mission. We report similar shells around other bright stars at similar locations in SPHEREx Band 1 images, suggesting that this shell is not astrophysical but instead a detector artifact.

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BibTeX
@misc{karambelkar2026shell,
  title = {{The shell around VY Canis Majoris in SPHEREx is likely an artifact}},
  author = {Viraj Karambelkar and Yashvi Sharma and Kishalay De},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.28612},
  eprint = {2609.28612},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.28612},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - The shell around VY Canis Majoris in SPHEREx is likely an artifact
AU  - Viraj Karambelkar
AU  - Yashvi Sharma
AU  - Kishalay De
PY  - 2026
DA  - 2026/09/23
PB  - arXiv
DO  - 10.48550/arxiv.2609.28612
UR  - https://arxiv.org/abs/2609.28612
AB  - Recently, the presence of a large shell around the bright hypergiant star VY Canis Majoris was reported in images from the SPHEREx mission. We report similar shells around other bright stars at similar locations in SPHEREx Band 1 images, suggesting that this shell is not astrophysical but instead a detector artifact.
ER  -