A Tangle of Stellar Streams in the North Galactic Cap

Weiss, Jake and Newberg, Heidi Jo and Desell, Travis (2018) A Tangle of Stellar Streams in the North Galactic Cap. The Astrophysical Journal, 867 (1). L1. ISSN 2041-8213

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Abstract

Stellar halo substructures were identified using statistical photometric parallax of blue main-sequence turnoff stars from 14 Sloan Digital Sky Survey stripes in the north Galactic cap. Four structures are consistent with previous measurements of the Sagittarius dwarf tidal stream: the leading tail, the "bifurcated" stream, the trailing tail, and Stream C. The stellar overdensity in Virgo, about 15 kpc from the Sun, could arise from the crossing of the Parallel Stream and a new, candidate stream dubbed the Perpendicular Stream. The data suggests the presence of a wide stream near NGC 5466, with a distance of 5–15 kpc. Measurements of the flattening of the smooth stellar halo from the 14 stripes average q = 0.58, with a dispersion of 0.04.

Item Type: Article
Subjects: Open Research Librarians > Physics and Astronomy
Depositing User: Unnamed user with email support@open.researchlibrarians.com
Date Deposited: 28 Jun 2023 05:31
Last Modified: 14 Oct 2023 05:35
URI: http://stm.e4journal.com/id/eprint/1344

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