Candidate members of the Pal 5, GD-1, Cetus Polar, and Orphan tidal stellar halo streams from Sdss DR9, Lamost DR3 and APOGEE catalogues

Abstract

We present candidate members of the Pal 5, GD-1, Cetus Polar, and Orphan tidal stellar streams found in LAMOST DR3, SDSS DR9 and APOGEE catalogs. In LAMOST DR3, we find 20, 4, 24 high confidence candidates of tidal streams GD-1, Cetus Polar and Orphan respectively. We also list from the SDSS DR9 spectroscopic catalog 59, 118, 10 high confidence candidates of tidal streams Cetus Polar, Orphan and Pal 5, respectively. Furthermore, we find 7 high confidence candidates of the Pal 5 tidal stream in APOGEE data. Compared with SDSS, the new candidates from LAMOST DR3 are brighter, so that together, more of the color-magnitude diagram, including the giant branch can be explored. Analysis of SDSS data shows that there are 3 metallicity peaks of the Orphan stream and also shows some spatial separation. LAMOST data confirms multiple metallicities in this stream. The metallicity, given by the higher resolution APOGEE instrument, of the Pal 5 tidal stream is [Fe/H] $\sim -1.2$, higher than that given earlier by SDSS spectra. Many previously unidentified stream members are tabulated here for the first time, along with existing members, allowing future researchers to further constrain the orbits of these objects as they move within the Galaxy's dark matter potential.

17pages, 19 figures, 3 tables

References in corpus (7)

• The Apache Point Observatory Galactic Evolution Experiment (APOGEE)
• Detection of a 63 Degree Cold Stellar Stream in the Sloan Digital Sky Survey
• Discovery of a New, Polar-Orbiting Debris Stream in the Milky Way Stellar Halo
• Tracing Sagittarius Structure with SDSS and SEGUE Imaging and Spectroscopy
• An Orbit Fit for the Grillmair Dionatos Cold Stellar Stream
• Palomar 5 and its Tidal Tails: A Search for New Members in the Tidal Stream
• Validation of LAMOST Stellar Parameters with the PASTEL Catalog

Cited by in corpus (5)

• $S^5$: The Orbital and Chemical Properties of One Dozen Stellar Streams
• Galactic potential constraints from clustering in action space of combined stellar stream data
• STREAMFINDER II: A possible fanning structure parallel to the GD-1 stream in Pan-STARRS1
• The substructures in the local stellar halo from Gaia and LAMOST
• On the Hunt for the Origins of the Orphan--Chenab Stream: Detailed Element Abundances with APOGEE and Gaia