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Discovery of a huge low-surface-brightness galaxy - A protodisk galaxy at low redshift?
Abstract
The authors report on the accidental discovery of an extremely large, extremely H I-rich low-surface-brightness galaxy located at a redshift of z = 0.083. Its nuclear spectrum exhibits broad, low-level emission lines. Surface photometry at V indicates the presence of a bulge component and a very extended disk, with scale length of ≈45arcsec (55 kpc for H0 = 100) and with central surface brightness of V(0) ≈ 25.5 mag arcsec-2. The total amount of H I is at least 1.0×1011M_sun;. This amount of H I is at least 5 times more H I than any spiral galaxy previously observed. If disk formation is a quiescent process, then it is likely that the authors have caught a disk in the process of formation. They also point out that the properties of this disk are likely to be similar to the suspected sources that produce the observed damped Lyα absorption profiles that are so conspicuous at z ≈ 2.
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Cited by
Ferguson, H. C., & Binggeli, B. (1994) · The Astronomy and Astrophysics Review · doi:10.1007/bf01208252 · Cited by 317
Illuminating Low Surface Brightness Galaxies with the Hyper Suprime-Cam Survey
Greco, J. P., Greene, J. E., Strauss, M. A., Macarthur, L. A., Flowers, X., Goulding, A. D., Huang, S., Kim, J. H., Komiyama, Y., Leauthaud, A., et al. (2018) · The Astrophysical Journal · doi:10.3847/1538-4357/aab842 · Cited by 193
Metadata
- Authors
- Bothun, G. D., Impey, C. D., Malin, D. F., & Mould, J. R.
- Venue
- The Astronomical Journal
- Publisher
- American Astronomical Society
- Published
- 1987-07
- Volume
- 94
- Pages
- 23
- ISSN
- 0004-6256 (ISSN-L)
- OpenAlex
- W1981372704
- Cited by
- 240
- References
- 0
- FWCI
- 5.99
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Discovery of a huge low-surface-brightness galaxy - A protodisk galaxy at low redshift? https://app.cochat.ai/papers/10.1086/114443
- The paper
- Bothun, G. D., Impey, C. D., Malin, D. F., & Mould, J. R. (1987). Discovery of a huge low-surface-brightness galaxy - A protodisk galaxy at low redshift? The Astronomical Journal. https://doi.org/10.1086/114443
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
