A Pan-STARRS1 view of the bifurcated sagittarius stream

C. T. Slater; E. F. Bell; E. F. Schlafly; M. Jurić; N. F. Martin; H. W. Rix; E. J. Bernard; W. S. Burgett; K. C. Chambers; D. P. Finkbeiner; B. Goldman; N. Kaiser; E. A. Magnier; E. P. Morganson; P. A. Price; J. L. Tonry

doi:10.1088/0004-637X/762/1/6

A Pan-STARRS1 view of the bifurcated sagittarius stream

C. T. Slater, E. F. Bell, E. F. Schlafly, M. Jurić, N. F. Martin, H. W. Rix, E. J. Bernard, W. S. Burgett, K. C. Chambers, D. P. Finkbeiner, B. Goldman, N. Kaiser, E. A. Magnier, E. P. Morganson, P. A. Price, J. L. Tonry

Research output: Contribution to journal › Review article › peer-review

Abstract

We use data from the Pan-STARRS1 survey to present a panoramic view of the Sagittarius tidal stream in the southern Galactic hemisphere. As a result of the extensive sky coverage of Pan-STARRS1, the southern stream is visible along more than 60° of its orbit, nearly double the length seen by the Sloan Digital Sky Survey. The recently discovered southern bifurcation of the stream is also apparent, with the fainter branch of the stream visible over at least 30°. Using a combination of fitting both the main-sequence turnoff and the red clump, we measure the distance to both arms of the stream in the south. We find that the distances to the bright arm of the stream agree very well with the N-body models of Law & Majewski. We also find that the faint arm lies ∼5 kpc closer to the Sun than the bright arm, similar to the behavior seen in the northern hemisphere.

Original language	English (US)
Article number	6
Journal	Astrophysical Journal
Volume	762
Issue number	1
DOIs	https://doi.org/10.1088/0004-637X/762/1/6
State	Published - Jan 1 2013
Externally published	Yes

Keywords

Galaxy: halo
Galaxy: structure
Local Group

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Online availability

10.1088/0004-637X/762/1/6

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Slater, C. T., Bell, E. F., Schlafly, E. F., Jurić, M., Martin, N. F., Rix, H. W., Bernard, E. J., Burgett, W. S., Chambers, K. C., Finkbeiner, D. P., Goldman, B., Kaiser, N., Magnier, E. A., Morganson, E. P., Price, P. A., & Tonry, J. L. (2013). A Pan-STARRS1 view of the bifurcated sagittarius stream. Astrophysical Journal, 762(1), [6]. https://doi.org/10.1088/0004-637X/762/1/6

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abstract = "We use data from the Pan-STARRS1 survey to present a panoramic view of the Sagittarius tidal stream in the southern Galactic hemisphere. As a result of the extensive sky coverage of Pan-STARRS1, the southern stream is visible along more than 60° of its orbit, nearly double the length seen by the Sloan Digital Sky Survey. The recently discovered southern bifurcation of the stream is also apparent, with the fainter branch of the stream visible over at least 30°. Using a combination of fitting both the main-sequence turnoff and the red clump, we measure the distance to both arms of the stream in the south. We find that the distances to the bright arm of the stream agree very well with the N-body models of Law & Majewski. We also find that the faint arm lies ∼5 kpc closer to the Sun than the bright arm, similar to the behavior seen in the northern hemisphere.",

keywords = "Galaxy: halo, Galaxy: structure, Local Group",

author = "Slater, {C. T.} and Bell, {E. F.} and Schlafly, {E. F.} and M. Juri{\'c} and Martin, {N. F.} and Rix, {H. W.} and Bernard, {E. J.} and Burgett, {W. S.} and Chambers, {K. C.} and Finkbeiner, {D. P.} and B. Goldman and N. Kaiser and Magnier, {E. A.} and Morganson, {E. P.} and Price, {P. A.} and Tonry, {J. L.}",

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doi = "10.1088/0004-637X/762/1/6",

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AU - Slater, C. T.

AU - Bell, E. F.

AU - Schlafly, E. F.

AU - Jurić, M.

AU - Martin, N. F.

AU - Rix, H. W.

AU - Bernard, E. J.

AU - Burgett, W. S.

AU - Chambers, K. C.

AU - Finkbeiner, D. P.

AU - Goldman, B.

AU - Kaiser, N.

AU - Magnier, E. A.

AU - Morganson, E. P.

AU - Price, P. A.

AU - Tonry, J. L.

PY - 2013/1/1

Y1 - 2013/1/1

N2 - We use data from the Pan-STARRS1 survey to present a panoramic view of the Sagittarius tidal stream in the southern Galactic hemisphere. As a result of the extensive sky coverage of Pan-STARRS1, the southern stream is visible along more than 60° of its orbit, nearly double the length seen by the Sloan Digital Sky Survey. The recently discovered southern bifurcation of the stream is also apparent, with the fainter branch of the stream visible over at least 30°. Using a combination of fitting both the main-sequence turnoff and the red clump, we measure the distance to both arms of the stream in the south. We find that the distances to the bright arm of the stream agree very well with the N-body models of Law & Majewski. We also find that the faint arm lies ∼5 kpc closer to the Sun than the bright arm, similar to the behavior seen in the northern hemisphere.

AB - We use data from the Pan-STARRS1 survey to present a panoramic view of the Sagittarius tidal stream in the southern Galactic hemisphere. As a result of the extensive sky coverage of Pan-STARRS1, the southern stream is visible along more than 60° of its orbit, nearly double the length seen by the Sloan Digital Sky Survey. The recently discovered southern bifurcation of the stream is also apparent, with the fainter branch of the stream visible over at least 30°. Using a combination of fitting both the main-sequence turnoff and the red clump, we measure the distance to both arms of the stream in the south. We find that the distances to the bright arm of the stream agree very well with the N-body models of Law & Majewski. We also find that the faint arm lies ∼5 kpc closer to the Sun than the bright arm, similar to the behavior seen in the northern hemisphere.

KW - Galaxy: halo

KW - Galaxy: structure

KW - Local Group

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U2 - 10.1088/0004-637X/762/1/6

DO - 10.1088/0004-637X/762/1/6

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SN - 0004-637X

VL - 762

JO - Astrophysical Journal

JF - Astrophysical Journal

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A Pan-STARRS1 view of the bifurcated sagittarius stream

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