A New Cold Stream near the Southern Galactic Pole

Abstract

We report the discovery of a cold stream near the southern Galactic pole (dubbed as SGP-S) detected in $Gaia$ Early Data Release 3. The stream is at a heliocentric distance of $\sim$ 9.5 kpc and spans nearly 58${}^{\circ }$ by 0.6${}^{\circ }$ on sky. The colour-magnitude diagram of SGP-S indicates an old and metal-poor (age $\sim$ 12 Gyr, [M/H] $\sim$ -2.0 dex) stellar population. The stream's surface brightness reaches an exceedingly low level of ${\Sigma }_G\simeq$ 36.2 mag arcsec${}^{-2}$. Neither extant globular clusters nor other known streams are associated with SGP-S.

References in corpus (38)

• Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
• Measuring Reddening with SDSS Stellar Spectra and Recalibrating SFD
• PARSEC: stellar tracks and isochrones with the PAdova and TRieste Stellar Evolution Code
• Local Kinematics and the Local Standard of Rest
• galpy: A Python Library for Galactic Dynamics
• The merger that led to the formation of the Milky Way's inner stellar halo and thick disk
• Gaia Early Data Release 3: The astrometric solution
• Gaia Early Data Release 3: Photometric content and validation
• The Ghost of Sagittarius and Lumps in the Halo of the Milky Way
• The Sagittarius Dwarf Galaxy: a Model for Evolution in a Triaxial Milky Way Halo
• A dynamically young and perturbed Milky Way disk
• Gaia EDR3 view on Galactic globular clusters
• The Milky Way's circular velocity curve between 4 and 14 kpc from APOGEE data
• Constraining the Milky Way potential with a 6-D phase-space map of the GD-1 stellar stream
• The total mass of the Large Magellanic Cloud from its perturbation on the Orphan stream
• Detection of a 63 Degree Cold Stellar Stream in the Sloan Digital Sky Survey
• The extended tails of Palomar 5: A ten degree arc of globular cluster tidal debris
• Stellar Streams Discovered in the Dark Energy Survey
• "Skinny Milky Way, Please", says Sagittarius
• The shape of the inner Milky Way halo from observations of the Pal 5 and GD-1 stellar streams
• Charting the Galactic acceleration field I. A search for stellar streams with Gaia DR2 and EDR3 with follow-up from ESPaDOnS and UVES
• Detection of a 45 Degree Tidal Stream Associated with the Globular Cluster NGC 5466
• Discovery of a New, Polar-Orbiting Debris Stream in the Milky Way Stellar Halo
• Constraining the Milky Way Halo Potential with the GD-1 stellar stream
• Riding the kinematic waves in the Milky Way disk with Gaia
• $S^5$: The Orbital and Chemical Properties of One Dozen Stellar Streams
• A Cold Milky Way Stellar Stream in the Direction of Triangulum
• Discovery of a cold stellar stream in the ATLAS DR1 data
• Orbital Clustering Identifies the Origins of Galactic Stellar Streams
• A Catalog of Moving Group Candidates in The Solar Neighborhood
• Phlegethon, a nearby $75°$-long retrograde stellar stream
• Constraining the Milky Way Halo Shape Using Thin Streams
• Detection of a 50 degree-long Trailing Tidal Tail for the Globular Cluster M5
• Icarus: a Flat and Fast Prograde Stellar Stream in the Milky Way disk
• Stellar Stream Candidates in the Solar Neighborhood Found in the LAMOST DR3 and TGAS
• Extended Tidal Tails of IC 4756 detected by {\it Gaia} EDR3
• Two Portions of Sagittarius Stream in the LAMOST Complete Spectroscopic Survey of Pointing Area at Southern Galactic Cap
• Revisit NGC 5466 Tidal Stream with $Gaia$, SDSS/SEGUE and LAMOST

Cited by in corpus (3)

• The Spectacular Tidal Tails of Globular Cluster M3 (NGC 5272)
• Flipping of the tidal tails of the Ophiuchus stream due to the decelerating Galactic bar
• A Dwarf Galaxy Debris Stream Associated with Palomar 1 and the Anticenter Stream