THE VIRUS-P EXPLORATION OF NEARBY GALAXIES (VENGA): SURVEY DESIGN, DATA PROCESSING, AND SPECTRAL ANALYSIS METHODS

	THE VIRUS-P EXPLORATION OF NEARBY GALAXIES (VENGA): SURVEY DESIGN, DATA PROCESSING, AND SPECTRAL ANALYSIS METHODS
	Blanc, Guillermo A.1; Weinzirl, Tim 2; Song, Mimi 2; Heiderman, Amanda 2; Gebhardt, Karl 2; Jogee, Shardha 2; Evans, Neal J., II 2; van den Bosch, Remco C. E.3; Luo, Rongxin 4; Drory, Niv 5
刊名	ASTRONOMICAL JOURNAL
	2013-05-01
卷号	145 期号:5 页码:1
关键词	galaxies: general galaxies: kinematics and dynamics galaxies: spiral ISM: kinematics and dynamics methods: data analysis surveys
英文摘要	We present the survey design, data reduction, and spectral fitting pipeline for the VIRUS-P Exploration of Nearby Galaxies (VENGA). VENGA is an integral field spectroscopic survey, which maps the disks of 30 nearby spiral galaxies. Targets span a wide range in Hubble type, star formation activity, morphology, and inclination. The VENGA data cubes have 5 ''.6 FWHM spatial resolution, similar to 5 angstrom FWHM spectral resolution, sample the 3600 angstrom-6800 angstrom range, and cover large areas typically sampling galaxies out to similar to 0.7R(25). These data cubes can be used to produce two-dimensional maps of the star formation rate, dust extinction, electron density, stellar population parameters, the kinematics and chemical abundances of both stars and ionized gas, and other physical quantities derived from the fitting of the stellar spectrum and the measurement of nebular emission lines. To exemplify our methods and the quality of the data, we present the VENGA data cube on the face-on Sc galaxy NGC 628 (a.k.a. M 74). The VENGA observations of NGC 628 are described, as well as the construction of the data cube, our spectral fitting method, and the fitting of the stellar and ionized gas velocity fields. We also propose a new method to measure the inclination of nearly face-on systems based on the matching of the stellar and gas rotation curves using asymmetric drift corrections. VENGA will measure relevant physical parameters across different environments within these galaxies, allowing a series of studies on star formation, structure assembly, stellar populations, chemical evolution, galactic feedback, nuclear activity, and the properties of the interstellar medium in massive disk galaxies.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	INTEGRAL-FIELD SPECTROSCOPY ; STAR-FORMING GALAXIES ; HUBBLE-SPACE-TELESCOPE ; EXTRAGALACTIC DISTANCE DATABASE ; STELLAR VELOCITY DISPERSIONS ; EMISSION-LINE KINEMATICS ; ACTIVE GALACTIC NUCLEI ; WARM IONIZED MEDIUM ; DIGITAL SKY SURVEY ; COLD DARK MATTER
收录类别	SCI
语种	英语
WOS记录号	WOS:000317329100022
内容类型	期刊论文
源URL	[http://119.78.226.72/handle/331011/18016]
专题	上海天文台_星系宇宙学重点实验室
作者单位	1.Observ Carnegie Inst Sci, Pasadena, CA USA 2.Univ Texas Austin, Dept Astron, Austin, TX 78712 USA 3.Max Planck Inst Astron, D-69117 Heidelberg, Germany 4.Shanghai Astron Observ, Shanghai, Peoples R China 5.Univ Nacl Autonoma Mexico, Inst Astron, Mexico City 04510, DF, Mexico 6.Max Planck Inst Extraterr Phys, Garching, Germany 7.Univ Maryland, Dept Astron, College Pk, MD 20742 USA 8.Univ Washington, Dept Astron, Seattle, WA 98195 USA
推荐引用方式 GB/T 7714	Blanc, Guillermo A.,Weinzirl, Tim,Song, Mimi,et al. THE VIRUS-P EXPLORATION OF NEARBY GALAXIES (VENGA): SURVEY DESIGN, DATA PROCESSING, AND SPECTRAL ANALYSIS METHODS[J]. ASTRONOMICAL JOURNAL,2013,145(5):1.
APA	Blanc, Guillermo A..,Weinzirl, Tim.,Song, Mimi.,Heiderman, Amanda.,Gebhardt, Karl.,...&Yoachim, Peter.(2013).THE VIRUS-P EXPLORATION OF NEARBY GALAXIES (VENGA): SURVEY DESIGN, DATA PROCESSING, AND SPECTRAL ANALYSIS METHODS.ASTRONOMICAL JOURNAL,145(5),1.
MLA	Blanc, Guillermo A.,et al."THE VIRUS-P EXPLORATION OF NEARBY GALAXIES (VENGA): SURVEY DESIGN, DATA PROCESSING, AND SPECTRAL ANALYSIS METHODS".ASTRONOMICAL JOURNAL 145.5(2013):1.