期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 446, 期 1, 页码 120-143出版社
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stu2019
关键词
techniques: photometric; galaxies: elliptical and lenticular, cD; galaxies: interactions; galaxies: photometry; galaxies: stellar content
资金
- Agence Nationale de la Recherche [ANR10-BLANC-0506-01]
- Lyon Institute of Origins [ANR-10-LABX-66]
- Royal Society University Research Fellowship
- UK Research Councils [PP/E001114/1, ST/H002456/1, PPA/V/S/2002/00553, PP/E001564/1, ST/H504862/1]
- Christ Church, Oxford
- Royal Society [502011.K502/jd, JP0869822]
- DFG Cluster of Excellence 'Origin and Structure of the Universe'
- STFC Advanced Fellowship [ST/F009186/1]
- NSF [AST-1109803]
- ESO fellowship
- European Community's Seventh Framework Programme (/FP7) [229517]
- ESO
- STFC [ST/L004496/1, ST/H002456/1, ST/K00106X/1, ST/F009186/1, ST/M001857/1, PP/E001564/1, PP/E001114/1, ST/H504862/1] Funding Source: UKRI
- Division Of Astronomical Sciences
- Direct For Mathematical & Physical Scien [1109803] Funding Source: National Science Foundation
- Science and Technology Facilities Council [PP/E001114/1, ST/H002456/1, ST/K00106X/1, ST/H504862/1, PP/E001564/1, ST/F009186/1, ST/L004496/1, ST/M001857/1] Funding Source: researchfish
Galactic archaeology based on star counts is instrumental to reconstruct the past mass assembly of Local Group galaxies. The development of new observing techniques and data reduction, coupled with the use of sensitive large field of view cameras, now allows us to pursue this technique in more distant galaxies exploiting their diffuse low surface brightness (LSB) light. As part of the ATLAS(3D) project, we have obtained with the MegaCam camera at the Canada-France-Hawaii Telescope extremely deep, multiband images of nearby early-type galaxies (ETGs). We present here a catalogue of 92 galaxies from the ATLAS(3D) sample, which are located in low-to medium-density environments. The observing strategy and data reduction pipeline, which achieve a gain of several magnitudes in the limiting surface brightness with respect to classical imaging surveys, are presented. The size and depth of the survey are compared to other recent deep imaging projects. The paper highlights the capability of LSB-optimized surveys at detecting new prominent structures that change the apparent morphology of galaxies. The intrinsic limitations of deep imaging observations are also discussed, among those, the contamination of the stellar haloes of galaxies by extended ghost reflections, and the cirrus emission from Galactic dust. The detection and systematic census of fine structures that trace the present and past mass assembly of ETGs are one of the prime goals of the project. We provide specific examples of each type of observed structures - tidal tails, stellar streams and shells - and explain how they were identified and classified. We give an overview of the initial results. The detailed statistical analysis will be presented in future papers.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据