Hostname: page-component-cd9895bd7-mkpzs Total loading time: 0 Render date: 2024-12-27T07:43:08.268Z Has data issue: false hasContentIssue false
  • English
  • Français

Kinematics of an Anticenter Stream Tributary in Kapteyn’s Selected Area 76

Published online by Cambridge University Press:  11 July 2011

M. Koleva ,
Ph. Prugniel ,
I. Vauglin ,
J.L. Carlin ,
D.I. Casetti-Dinescu ,
C.J. Grillmair  and
S.R. Majewski
J.L. Carlin
Affiliation:
Department of Astronomy, University of Virginia, PO Box 400325, Charlottesville, VA 22904-4325, USA
D.I. Casetti-Dinescu
Affiliation:
Astronomy Department, Yale University, PO Box 208101, New Haven, CT 06520-8101, USA
C.J. Grillmair
Affiliation:
Spitzer Science Center, 1200 E. California Blvd., Pasadena, CA 91125, USA
S.R. Majewski
Affiliation:
Department of Astronomy, University of Virginia, USA
Get access

Abstract

We have measured 3-D kinematics of stars in Kapteyn’s Selected Area (SA) 76 that were selected to be Anticenter Stream (ACS) members on the basis of their kinematics and CMD positions. Mean stream kinematics from the 31 identified ACS members produce an orbit inclined by ~30° to the well-defined spatial distribution of the stream. We have explored possible explanations for this, and suggest that our data in SA 76 are measuring the motion of a kinematically cold sub-stream among the ACS debris, which was likely a fragment of the same infalling structure that created the larger ACS system.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 48: CRAL-2010 A Universe of Dwarf Galaxies , 2011 , pp. 365 - 366
Copyright
© EAS, EDP Sciences, 2011

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Casetti-Dinescu, D.I., et al., 2006, AJ, 132, 2082CrossRef
Dinescu, D.I., Majewski, S.R., Girard, T.M., & Cudworth, K.M., 2000, AJ, 120, 1892CrossRef
Grillmair, C.J., 2006, ApJ, 651, L29 (G06)CrossRef
Grillmair, C.J., Carlin, J.L., & Majewski, S.R., 2008, ApJ, 689, L117 (GCM08)CrossRef
Robin, A.C., Reylé, C., Derrière, S., & Picaud, S., 2003, A&A, 409, 523