The DOI matches its Crossref record.
Galactic Halo Substructure in the Sloan Digital Sky Survey: The Ancient Tidal Stream from the Sagittarius Dwarf Galaxy
Open accessAbstract
Two studies have recently reported the discovery of pronounced halo substructure in the Sloan Digital Sky Survey (SDSS) commissioning data. Here we show that this halo substructure is, almost in its entirety, due to the expected tidal stream torn off the Sagittarius dwarf galaxy during the course of its many close encounters with the Milky Way. This interpretation makes strong predictions on the kinematics and distances of these stream stars. Comparison of the structure in old horizontal branch stars, detected by the SDSS team, with the carbon star structure discovered in our own survey, indicates that this halo stream is of comparable age to the Milky Way. It would appear that the Milky Way and the Sagittarius dwarf galaxy have been a strongly interacting system for most of their existence. Once complete, the SDSS will provide a unique data set with which to constrain the dynamical evolution of the Sagittarius dwarf galaxy; it will also strongly constrain the mass distribution of the outer Milky Way.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cited by
LSST: From Science Drivers to Reference Design and Anticipated Data Products
Ivezić, Ž., Kahn, S. M., Tyson, J. A., Abel, B., Acosta, E., Allsman, R., Alonso, D., AlSayyad, Y., Anderson, S. F., Andrew, J., et al. (2019) · The Astrophysical Journal · doi:10.3847/1538-4357/ab042c · Cited by 4,357
“• Mapping the metallicity, kinematics and spatial profile of the Sgr dwarf tidal stream (e.g., Ibata et al. 2001; Majewski et al. 2003; Law, Johnston & Majewski 2005; Belokurov et al. 2014) and the Magellanic stream (Zaritsky et al. 2004).”
BackgroundThe New Galaxy: Signatures of Its Formation
Freeman, K., & Bland-Hawthorn, J. (2002) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev.astro.40.060401.093840 · Cited by 1,160
The Field of Streams: Sagittarius and Its Siblings
Belokurov, V., Zucker, D. B., Evans, N. W., Gilmore, G., Vidrih, S., Bramich, D. M., Newberg, H. J., Wyse, R. F. G., Irwin, M. J., Fellhauer, M., et al. (2006) · The Astrophysical Journal · doi:10.1086/504797 · Cited by 915
Self-citationThe Ghost of Sagittarius and Lumps in the Halo of the Milky Way
Newberg, H. J., Yanny, B., Rockosi, C., Grebel, E. K., Rix, H., Brinkmann, J., Csabai, I., Hennessy, G., Hindsley, R. B., Ibata, R., et al. (2002) · The Astrophysical Journal · doi:10.1086/338983 · Cited by 760
Self-citationGalactic stellar haloes in the CDM model
Cooper, A. P., Cole, S., Frenk, C. S., White, S. D. M., Helly, J., Benson, A. J., De Lucia, G., Helmi, A., Jenkins, A., Navarro, J. F., et al. (2010) · Monthly Notices of the Royal Astronomical Society · doi:10.1111/j.1365-2966.2010.16740.x · Cited by 594
Metadata
- Authors
- Ibata, R., Irwin, M., Lewis, G. F., & Stolte, A.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 2001-02-01
- Volume
- 547
- Issue
- 2
- Pages
- L133-L136
- ISSN
- 0004-637X (ISSN-L)
- OpenAlex
- W2059468604
- Cited by
- 276
- References
- 0
- FWCI
- 11.61
- Type
- journal article
- Language
- en
- Open access
- bronze
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: Galactic Halo Substructure in the Sloan Digital Sky Survey: The Ancient Tidal Stream from the Sagittarius Dwarf Galaxy. https://app.cochat.ai/papers/10.1086/318894
- The paper
- Ibata, R., Irwin, M., Lewis, G. F., & Stolte, A. (2001). Galactic Halo Substructure in the Sloan Digital Sky Survey: The Ancient Tidal Stream from the Sagittarius Dwarf Galaxy. The Astrophysical Journal. https://doi.org/10.1086/318894
Data sources
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.
