{ "id": "2203.13414", "version": "v1", "published": "2022-03-25T01:52:10.000Z", "updated": "2022-03-25T01:52:10.000Z", "title": "Revisit NGC 5466 Tidal Stream with $Gaia$, SDSS/SEGUE and LAMOST", "authors": [ "Yong Yang", "Jing-Kun Zhao", "Miho N. Ishigaki", "Jian-Zhao Zhou", "Cheng-Qun Yang", "Xiang-Xiang Xue", "Xian-Hao Ye", "Gang Zhao" ], "comment": "accepted for publication in MNRAS", "categories": [ "astro-ph.GA" ], "abstract": "By mining the data from $Gaia$ EDR3, SDSS/SEGUE DR16 and LAMOST DR8, 11 member stars of the NGC 5466 tidal stream are detected and 7 of them are newly identified. To reject contaminators, a variety of cuts are applied in sky position, color-magnitude diagram, metallicity, proper motion and radial velocity. We compare our data to a mock stream generated by modeling the cluster's disruption under a smooth Galactic potential plus the Large Magellanic Cloud (LMC). The concordant trends in phase-space between the model and observations imply that the stream might have been perturbed by LMC. The two most distant stars among 11 detected members trace the stream's length to $60^\\circ$ of sky, supporting and extending the previous length of $45^\\circ$. Given that NGC 5466 is so distant and potentially has a longer tail than previously thought, we expect that NGC 5466 tidal stream could be a useful tool in constraining the Milky Way gravitational field.", "revisions": [ { "version": "v1", "updated": "2022-03-25T01:52:10.000Z" } ], "analyses": { "keywords": [ "tidal stream", "revisit ngc", "smooth galactic potential plus", "milky way gravitational field", "large magellanic cloud" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }