NOAO >   Observing Info >   Approved Programs >   2012A-0469

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Proposal Information for 2012A-0469


PI: Rachel Mason, Gemini Observatory - North, rmason@gemini.edu
Address: Gemini Observatory, 670 N. Aohoku Place, Hilo, HI 96720, USA

CoI: Almudena Alonso-Herrero, Universidad de Cantabria
CoI: Asa Bluck, Gemini Observatory - North
CoI: Luis Colina, Centro de Astrobiologia, Instituto Nacional de Tecnica Aeroespacial
CoI: Ruben Diaz, Gemini Observatory - South
CoI: Tanio Diaz-Santos, Spitzer Science Center/Caltech
CoI: Helene Flohic, Universidad de Chile
CoI: Percy Gomez, Gemini Observatory - South
CoI: Omaira Gonzalez-Martin, Instituto de Astrofisica de Canarias
CoI: Luis Ho, The Observatories of the Carnegie Institution for Science
CoI: Inger Jorgensen, Gemini Observatory - North
CoI: Marie Lemoine-Busserolle, Gemini Observatory - North
CoI: Nancy Levenson, Gemini Observatory - South
CoI: Paulina Lira, Universidad de Chile
CoI: Richard McDermid, Gemini Observatory - North
CoI: Eric Perlman, Florida Institute of Technology
CoI: Alberto Rodriguez-Ardila, Laboratorio Nacional de Astrofisica (LNA/MCT)
CoI: Rogerio Riffel, Universidade Federal do Rio Grande do Sul (UFRGS)
CoI: Ricardo Schiavon, Gemini Observatory - North
CoI: Cristina Ramos Almeida, University of Sheffield
CoI: Karun Thanjavur, Canada-France-Hawaii Telescope Corporation
CoI: Claudia Winge, Gemini Observatory - South

Title: NIR spectroscopy of Palomar emission-line galaxies

Abstract: We propose GNIRS cross-dispersed spectroscopy of 60 Seyferts and LINERs from the Palomar galaxy sample. The spectra will advance our knowledge of AGN physics and lifecycles by demonstrating whether the accretion disk and nuclear dust properties change as a function of accretion rate, as predicted by theoretical models. They will be used to investigate the contribution of evolved stars to the line emission in LINERs, with implications for AGN demographics, and to make new stellar kinematic measurements for black hole mass estimates. The number and variety of spectral features that will appear in the data are expected to enable a wide range of science besides that highlighted in this proposal. For this reason, we plan a reduced proprietary period and to make the reduced spectra available to the community. We anticipate applying for time to observe the remaining emission-line galaxies in the (near-complete) Palomar sample over the next few semesters. The targets are distributed throughout the northern sky, making Gemini's queue mode ideal for this work. The fairly short observations are easily scheduled and can be carried out in suboptimal observing conditions.


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