NOAO >   Observing Info >   Approved Programs >   2016B-0079

Small NOAO Logo

Program Information for 2016B-0079


PI: Aaron Barth, UC Irvine, barth@uci.edu
Address: Department of Physics and Astronomy, Irvine, CA, 92697-4575 USA

CoI: Joydeep Bagchi, Inter-University Centre for Astronomy and Astrophysics
CoI: Luis Ho, Kavli Institute for Astronomy and Astrophysics
CoI: Minjin Kim, KASI
CoI: Stephen Walker, University of Cambridge
CoI: Andrew Fabian, University of Cambridge

Title: Bulge structure and kinematics in an extreme spiral galaxy hosting megaparsec-scale radio jets

Abstract: The radio galaxy 2MASX J23453268-0449256 is an extreme object with unprecedented properties. It is a disk-dominated and unusually massive red spiral with a rotation speed of 430 km/s at r=15 kpc, and its Mpc-scale radio jets are the largest ever found emerging from a spiral host. Ground-based imaging suggests that its central component is a pseudobulge, and its central stellar velocity dispersion is 350 km/s, surprisingly high for a disk-dominated spiral. This object challenges the conventional wisdom that the hosts of large-scale radio jets are exclusively early-type galaxies. We propose to obtain Gemini GMOS-IFU spectroscopy of J2345. GMOS IFU data will provide high-quality spatially resolved measurements of the stellar and gas kinematics of the bulge, which will be used to model the mass distribution in this unique system. These observations will enable us to accurately quantify the structure and kinematics of this extreme galaxy and clarify its physical properties and formation history. This program is the Gemini component of an approved Cycle 23 Joint HST-NOAO program (HST GO-14091).

Program Type: HST

Scheduled Nights:
Run 1 (2016B):  GEM-SQ/GMOSS -- 6hrs band 2 (GS-2016B-Q-34)


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2016B-0079

noaoprop-help@noao.edu

Small NOAO Logo