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Related papers: The Phoenix stream: a cold stream in the Southern …

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We report the serendipitous discovery of a stellar stream in the constellation Pegasus in the south Galactic hemisphere. The stellar stream was detected using the SDSS Data Release 14 by means of a matched filter in the color--magnitude…

Astrophysics of Galaxies · Physics 2019-04-10 H. D. Perottoni , C. Martin , H. J. Newberg , H. J. Rocha-Pinto , F. de Almeida-Fernandes , A. R. Gomes-Junior

We report the discovery of a narrow stellar stream crossing the constellations of Sculptor and Fornax in the Southern celestial hemisphere. The portion of the stream detected in the Data Release 1 photometry of the ATLAS survey is at least…

Astrophysics of Galaxies · Physics 2015-06-19 S. E. Koposov , M. Irwin , V. Belokurov , E. Gonzales-Solares , A. Kupcu Yoldas , J. Lewis , N. Metcalfe , T. Shanks

We perform a search for stellar streams around the Milky Way using the first three years of multi-band optical imaging data from the Dark Energy Survey (DES). We use DES data covering $\sim 5000$ sq. deg. to a depth of $g > 23.5$ with a…

We investigate whether the recently discovered Phoenix stream may be part of a much longer structure that includes the previously discovered Hermus stream. Using a simple model of the Galaxy with a disk, bulge, and a spherical dark matter…

Astrophysics of Galaxies · Physics 2016-04-06 Carl J. Grillmair , Raymond G. Carlberg

We present results from a WIYN/OPTIC photometric and astrometric survey of the field of the open cluster NGC 188 ((l,b) = (122.8\arcdeg, 22.5\arcdeg)). We combine these results with the proper-motion and photometry catalog of Platais et al.…

Astrophysics of Galaxies · Physics 2015-05-18 Dana I. Casetti-Dinescu , Terrence M. Girard , Imants Platais , William F. van Altena

We present the results of fitting a flexible stellar stream density model to a collection of thirteen streams around the Milky Way, using photometric data from DES, DECaLS, and Pan-STARRS. We construct density maps for each stream and…

Astrophysics of Galaxies · Physics 2022-06-22 Jeffrey M. Patrick , Sergey E. Koposov , Matthew G. Walker

We report the discovery of a thin stellar stream found in Pan-STARRS1 photometry near the Galactic bulge in the constellation of Ophiuchus. It appears as a coherent structure in the colour-selected stellar density maps produced to search…

The Phoenix stellar stream has a low intrinsic dispersion in velocity and metallicity that implies the progenitor was probably a low mass globular cluster. In this work we use Magellan/MIKE high-dispersion spectroscopy of eight Phoenix…

We report the discovery of a thin stellar stream - which we name the Jet stream - crossing the constellations of Hydra and Pyxis. The discovery was made in data from the SLAMS survey, which comprises deep $g$ and $r$ imaging for a $650$…

The Ophiuchus stream is a short arc-like stellar feature of uncertain origin located $\sim 5$ kpc North of the Galactic centre. New proper motions from the second $Gaia$ data release reconcile the direction of motion of stream members with…

Astrophysics of Galaxies · Physics 2020-01-22 James M. M. Lane , Julio F. Navarro , Azadeh Fattahi , Kyle A. Oman , Jo Bovy

Observations of an ancient stellar stream provide the first evidence of a vanished population of extremely metal-poor stellar clusters. Their remnants might reveal how the early assembly of the Milky Way proceeded.

Astrophysics of Galaxies · Physics 2020-09-29 J. M. Diederik Kruijssen

We report on the detection in Sloan Digital Sky Survey data of a 63 degree-long tidal stream of stars, extending from Ursa Major to Cancer. The stream has no obvious association with the orbit of any known cluster or galaxy. The contrast of…

Astrophysics · Physics 2009-11-11 Carl J. Grillmair , Odysseas Dionatos

We use Sloan Digital Sky Survey Data Release 5 photometry and spectroscopy to study a tidal stream that extends over 50 degrees in the North Galactic Cap. From the analysis of the path of the stream and the colors and magnitudes of its…

A map of 100 degrees on a side extracted from Gaia DR2 and centred on Alpha Persei reveals two distinct structures | the Alpha Persei star cluster and a conspicuous stellar stream, as widely documented in recent literature. In this work we…

Astrophysics of Galaxies · Physics 2020-09-09 Victoria V. Nikiforova , Maxim V. Kulesh , Anton F. Seleznev , Giovanni Carraro

We present the first results from our survey of stellar substructure in the outskirts of M31 using the Advanced Camera for Surveys (ACS) on board the Hubble Space Telescope. We discuss the stellar populations associated with five prominent…

Using the Sloan Digital Sky Survey Data Release 7, we reexamine the Eastern Banded Structure (EBS), a stellar debris stream first discovered in Data Release 5 and more recently detected in velocity space by Schlaufman et al. The visible…

Astrophysics of Galaxies · Physics 2015-05-28 Carl J. Grillmair

We identify a new, nearby (0.5 < d < 10 kpc) stream in data from the RAdial Velocity Experiment (RAVE). As the majority of stars in the stream lie in the constellation of Aquarius we name it the Aquarius Stream. We identify 15 members of…

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