Home News About Us Contact Contributors Disclaimer Privacy Policy Help FAQ

Home
Search
Quick Search
Advanced
Fulltext
Browse
Collections
Persons
My eDoc
Session History
Login
Name:
Password:
Documentation
Help
Support Wiki
Direct access to
document ID:


          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



  history
ID: 660997.0, MPI für Astronomie / Publikationen_mpia
The stretching of Hercules
Authors:Deason, A. J.; Belokurov, V.; Evans, N. W.; Watkins, L. L.; Fellhauer, M.
Date of Publication (YYYY-MM-DD):2012
Title of Journal:Monthly Notices of the Royal Astronomical Society
Journal Abbrev.:MNRAS
Volume:425
Issue / Number:1
Start Page:L101
End Page:L105
Review Status:not specified
Audience:Not Specified
Abstract / Description:We present VLT/FORS2 spectroscopy of candidate blue horizontal branch (BHB) stars in the vicinity of the Hercules ultrafaint dwarf galaxy. We identify eight convincing Hercules BHB members, and a further five stars with similar systemic velocities to that of Hercules, but ˜0.5 kpc from the centre of the galaxy along its major axis. It is likely that these stars once belonged to Hercules, but have been tidally stripped and are now unbound. We emphasize the usefulness of looking for any gradient in the systemic velocity of this stretched system, which would further support our interpretation of the origin of its elongated and distended morphology. E-mail: ajd75@ast.cam.ac.uk (AJD); vasily@ast.cam.ac.uk (VB); nwe@ast.cam.ac.uk (NWE)
Free Keywords:galaxies: dwarf; galaxies: interactions; galaxies: kinematics and dynamics; Local Group
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:URL:http://cdsads.u-strasbg.fr/abs/2012MNRAS.425L.101D [ID No:1]
The scope and number of records on eDoc is subject to the collection policies defined by each institute - see "info" button in the collection browse view.