Stellar overdensities in the halo: The extent of the Virgo overdensity

Stefan C. Keller; Gary S. Da Costa; Sayuri L. Prior

doi:10.1111/j.1365-2966.2009.14393.x

Stellar overdensities in the halo: The extent of the Virgo overdensity

Stefan C. Keller, Gary S. Da Costa, Sayuri L. Prior

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

Abstract

We map the three-dimensional extent of the Virgo overdensity by combining distance information from RR Lyrae variables and projected spatial information from the Southern Edgeworth-Kuiper Belt Object Survey and Sloan Digital Sky Survey Data Release 6 photometry. The Virgo overdensity is seen to comprise two filaments and 10° × 3°, and a circular structure 3° in diameter. Together, the three features span 38° of right ascension and declinations of 2° to -15°. RR Lyrae variables place the two filamentary features at heliocentric distances of 20 and 17 kpc, respectively, with projected dimensions of 5 × 1 and 3 × 1 kpc.

Original language	English
Pages (from-to)	1045-1050
Number of pages	6
Journal	Monthly Notices of the Royal Astronomical Society
Volume	394
Issue number	2
DOIs	https://doi.org/10.1111/j.1365-2966.2009.14393.x
Publication status	Published - Apr 2009

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title = "Stellar overdensities in the halo: The extent of the Virgo overdensity",

abstract = "We map the three-dimensional extent of the Virgo overdensity by combining distance information from RR Lyrae variables and projected spatial information from the Southern Edgeworth-Kuiper Belt Object Survey and Sloan Digital Sky Survey Data Release 6 photometry. The Virgo overdensity is seen to comprise two filaments and 10° × 3°, and a circular structure 3° in diameter. Together, the three features span 38° of right ascension and declinations of 2° to -15°. RR Lyrae variables place the two filamentary features at heliocentric distances of 20 and 17 kpc, respectively, with projected dimensions of 5 × 1 and 3 × 1 kpc.",

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author = "Keller, \{Stefan C.\} and \{Da Costa\}, \{Gary S.\} and Prior, \{Sayuri L.\}",

year = "2009",

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doi = "10.1111/j.1365-2966.2009.14393.x",

language = "English",

volume = "394",

pages = "1045--1050",

journal = "Monthly Notices of the Royal Astronomical Society",

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T1 - Stellar overdensities in the halo

T2 - The extent of the Virgo overdensity

AU - Keller, Stefan C.

AU - Da Costa, Gary S.

AU - Prior, Sayuri L.

PY - 2009/4

Y1 - 2009/4

N2 - We map the three-dimensional extent of the Virgo overdensity by combining distance information from RR Lyrae variables and projected spatial information from the Southern Edgeworth-Kuiper Belt Object Survey and Sloan Digital Sky Survey Data Release 6 photometry. The Virgo overdensity is seen to comprise two filaments and 10° × 3°, and a circular structure 3° in diameter. Together, the three features span 38° of right ascension and declinations of 2° to -15°. RR Lyrae variables place the two filamentary features at heliocentric distances of 20 and 17 kpc, respectively, with projected dimensions of 5 × 1 and 3 × 1 kpc.

AB - We map the three-dimensional extent of the Virgo overdensity by combining distance information from RR Lyrae variables and projected spatial information from the Southern Edgeworth-Kuiper Belt Object Survey and Sloan Digital Sky Survey Data Release 6 photometry. The Virgo overdensity is seen to comprise two filaments and 10° × 3°, and a circular structure 3° in diameter. Together, the three features span 38° of right ascension and declinations of 2° to -15°. RR Lyrae variables place the two filamentary features at heliocentric distances of 20 and 17 kpc, respectively, with projected dimensions of 5 × 1 and 3 × 1 kpc.

KW - Galaxy: halo

KW - Galaxy: structure

UR - https://www.scopus.com/pages/publications/62549097247

U2 - 10.1111/j.1365-2966.2009.14393.x

DO - 10.1111/j.1365-2966.2009.14393.x

M3 - Article

SN - 0035-8711

VL - 394

SP - 1045

EP - 1050

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 2

ER -

Stellar overdensities in the halo: The extent of the Virgo overdensity

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