Skip navigation
Skip navigation

SMASH 1: A VERY FAINT GLOBULAR CLUSTER DISRUPTING in the OUTER REACHES of the LMC?

Martin, Nicolas F; Jungbluth, Valentin; Nidever, David L.; Bell, Eric F; Besla, Gurtina; Blum, Robert D.; Conn, Blair; Cioni, M.-R. L; Kaleida, Catherine C.; Gallart, Carme

Description

We present the discovery of a very faint stellar system, SMASH 1, that is potentially a satellite of the Large Magellanic Cloud. Found within the Survey of the Magellanic Stellar History (SMASH), SMASH 1 is a compact (rh=9.1-3.4 +5.9pc) and very low luminosity (Mv=-1.0±0.9,Lv=102.3±0.4L⊙ ) stellar system that is revealed by its sparsely populated main sequence and a handful of red giant branch candidate member stars. The photometric properties of these stars are compatible with a metal-poor...[Show more]

dc.contributor.authorMartin, Nicolas F
dc.contributor.authorJungbluth, Valentin
dc.contributor.authorNidever, David L.
dc.contributor.authorBell, Eric F
dc.contributor.authorBesla, Gurtina
dc.contributor.authorBlum, Robert D.
dc.contributor.authorConn, Blair
dc.contributor.authorCioni, M.-R. L
dc.contributor.authorKaleida, Catherine C.
dc.contributor.authorGallart, Carme
dc.date.accessioned2018-11-29T22:56:36Z
dc.date.available2018-11-29T22:56:36Z
dc.identifier.issn2041-8205
dc.identifier.urihttp://hdl.handle.net/1885/153578
dc.description.abstractWe present the discovery of a very faint stellar system, SMASH 1, that is potentially a satellite of the Large Magellanic Cloud. Found within the Survey of the Magellanic Stellar History (SMASH), SMASH 1 is a compact (rh=9.1-3.4 +5.9pc) and very low luminosity (Mv=-1.0±0.9,Lv=102.3±0.4L⊙ ) stellar system that is revealed by its sparsely populated main sequence and a handful of red giant branch candidate member stars. The photometric properties of these stars are compatible with a metal-poor ([Fe/H]=-2.2) and old (13 Gyr) isochrone located at a distance modulus of ∼18.8, i.e., a distance of . Situated at 11.°3 from the LMC in projection, its three-dimensional distance from the Cloud is 13 kpc, consistent with a connection to the LMC, whose tidal radius is at least . Although the nature of SMASH 1 remains uncertain, its compactness favors it being a stellar cluster and hence dark-matter free. If this is the case, its dynamical tidal radius is only ≲19 pc at this distance from the LMC, and smaller than the system's extent on the sky. Its low luminosity and apparent high ellipticity (ϵ=0.62-0.21 +0.17) with its major axis pointing toward the LMC may well be the tell-tale sign of its imminent tidal demise
dc.format.mimetypeapplication/pdf
dc.publisherInstitute of Physics Publishing Ltd.
dc.sourceAstrophysical Journal Letters
dc.titleSMASH 1: A VERY FAINT GLOBULAR CLUSTER DISRUPTING in the OUTER REACHES of the LMC?
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume830
dc.date.issued2016
local.identifier.absfor020106 - High Energy Astrophysics; Cosmic Rays
local.identifier.absfor020199 - Astronomical and Space Sciences not elsewhere classified
local.identifier.ariespublicationa383154xPUB8434
local.type.statusPublished Version
local.contributor.affiliationMartin, Nicolas F, University of Strasbourg
local.contributor.affiliationJungbluth, Valentin, Observatoire Astronomique de Strasbourg, Université de Strasbourg
local.contributor.affiliationNidever, David L., Large Synoptic Survey Telescope
local.contributor.affiliationBell, Eric F, University of Michigan
local.contributor.affiliationBesla, Gurtina, University of Arizona
local.contributor.affiliationBlum, Robert D., National Optical Astronomy Observatory
local.contributor.affiliationConn, Blair, College of Science, ANU
local.contributor.affiliationCioni, M.-R. L, University of Hertfordshire
local.contributor.affiliationKaleida, Catherine C., Cerro Tololo Inter-American Observatory
local.contributor.affiliationGallart, Carme, Universidad de La Laguna
local.bibliographicCitation.issue1
local.identifier.doi10.3847/2041-8205/830/1/L10
dc.date.updated2018-11-29T08:13:25Z
local.identifier.scopusID2-s2.0-84991678528
local.identifier.thomsonID000385943000003
dcterms.accessRightsOpen Access
CollectionsANU Research Publications

Download

There are no files associated with this item.


Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.

Updated:  22 January 2019/ Responsible Officer:  University Librarian/ Page Contact:  Library Systems & Web Coordinator