Maximizing the science return of SITELLE with applications to the evolution of galaxies near and far

通过对近处和远方星系演化的应用，最大化 SITELLE 的科学回报

• 批准号: RGPIN-2014-05008
• 负责人: Drissen, Laurent
• 金额: $ 2.62万
• 依托单位: Université Laval
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2016
• 资助国家: 加拿大
• 起止时间: 2016-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=611383
• 关键词: Maximizing; science; return; SITELLE; applications

Over the past decade, my team has developped, in collaboration with the Québec City-based company ABB, a novel type of imaging spectrometers for visible-light astronomy, Imaging Fourier Transform Spectrometers (iFTS). After having worked on SpIOMM, a prototype IFTS attached to the 1.6-m telescope of the Observatoire du Mont Mégantic, this work will culminate in 2014 with the commissioning of SITELLE as a guest instrument at the Canada-France-Hawaii Telescope; it will be available to the entire CFHT community in the summer of 2014. SITELLE is an iFTS designed to obtain a spectrum for every pixel (0.32'') in a 11' x 11' field of view, in selected bandpasses of the visible band (350 - 900 nm), with a spectral resolution varying between R = 10 and 20 000. This instrument will be used to determine the physical characteristics of comets, nebulae in the Milky Way, nearby galaxies, as well as to characterize the star-formation rate in the more distant Universe. In this proposal, I present a plan to optimize the science return of SITELLE, and use it to study the process of star formation and chemical evolution in galaxies.I see it as a prime objective of my work in the next five years to make sure that SITELLE is used at its full potential by a large fraction of the CFHT community. Continuous support for SITELLE and its users is of prime importance for the success of this instrument, especially given its non-conventional approach to hyperspectral imagery. Data simulation, acquisition, processing and post-processing softwares are now being developped and tested on SpIOMM and simulated SITELLE data cubes; they will however need to be tested on real SITELLE data, and constantly updated throughout the lifetime of the instrument in order to maximize its scientific output. I will also use SITELLE for three projects that oriented its design from the beginning and emphasize its full potential: - The Survey for Nebular Abundances in Galaxies with SITELLE (SNAGS) is mostly aimed at determining the abundance distribution in the disks of several dozen nearby galaxies. I intend to take advantage of SITELLE's high resolution (seeing-limited) to concentrate on evidences of local fluctuations related to the presence of massive stars and their effect on their surrounding ISM, in particular nitrogen enrichement, ionization and kinematics. SITELLE data will be supplemented with long-slit spectra from 8-m class telescopes, archival HST & Galex and UVIT data. - In collaboration with Iglesias (IAA, Spain) and Plana (LATO - Brazil), I will observe with SpIOMM and SITELLE a sample of low-redshift (z < 0.1) compact groups of galaxies, all of them with clear signs of interactions, in order to understand the phenomena at play in such groups, and in particular star formation in the tidal tails. Measurements of the most conspicuous emission lines will allow us to study the properties (density, metallicity, excitation, kinematics) of the ionized gas, and thus of the young stellar populations not only in the main bodies of the galaxies, but also in the tidal features associated to the interactions thoughout the virial region of the group. - SITELLE is an ideal instrument to detect, with relatively low biases, very distant star-forming galaxies through their [OII] (up to z ~ 1) or Lya (z ~ 2 - 5) emission. In collaboration with Simard (NRC) and Willis (Uvic) I will use SITELLE to undergo a deep survey for emission-line galaxies in a wide cosmological volume in order to study the star-formation process at different redshifts.

在过去的十年中，与总部位于Tuebec的公司ABB Le-Light天文学合作，成像傅立叶变换光谱仪（IFTS）。这项工作于2014年与塞特尔（Sitelle在r = 10到20,000之间，该仪器将用于确定彗星的物理特征，附近的星系，以表征较远的宇宙中的恒星形成率。 在此提案中，我为Sitellle的科学回报提供了一个计划，并使用IT研究了Laxies中的恒星形成和化学作用的过程。我将其视为我在未来五年内工作的主要目标，以确保不断支持Sitelle和Primece的成功，尤其是其非征收interch interch to in to spiomm和模拟的sitelle datata cole;在内部更新了仪器的三十体，以最大程度地提高其科学输出。 我还将使用Sitelle进行三个定向的项目，并强调其全部潜力： - 与Sitelle（snags）的星系中的星系丰度的调查主要是在几个附近星系的磁盘中降低，以便优势与Sitelle的高分辨率（观察限制）相关的局部波动。巨大的恒星的存在及其对周围ISM的影响，Inization k nomatics数据将用8-m类望远镜，档案HST＆Galex和Uvit Data的光谱进行调整。 - 与Iglesias（IAA，西班牙IAA）和Plana（Lato -Brazil）合作，我将与Spiomm和Sitelle一起观察到一个低降射（Z <0.1）T组的样本，所有这些都具有清晰的互动迹象，为了理解此类群体中的现象，特别是潮汐尾部的星形形成。年轻的恒星流行不是星系的星系。 - sitellle是一种理想的仪器，具有相对低的偏见，与Simard（NRC）合作，非常遥远的星系[OII]（oii]（最高Z〜1）〜2-5）。我将使用Sitelle在不同红移的广泛宇宙学过程中进行深入的调查论坛排放线。