The VIRUS-P Exploration Of Nearby Galaxies (VENGA): Survey Design, Data Processing, And Spectral Analysis Methods

dc.contributor.utaustinauthorWeinzirl, Timen_US
dc.contributor.utaustinauthorSong, Mimi M.en_US
dc.contributor.utaustinauthorHeiderman, Amandaen_US
dc.contributor.utaustinauthorGebhardt, Karlen_US
dc.contributor.utaustinauthorJogee, Shardhaen_US
dc.contributor.utaustinauthorEvans, Neal J.en_US
dc.creatorBlanc, Guillermo A.en_US
dc.creatorWeinzirl, Timen_US
dc.creatorSong, Mimi M.en_US
dc.creatorHeiderman, Amandaen_US
dc.creatorGebhardt, Karlen_US
dc.creatorJogee, Shardhaen_US
dc.creatorEvans, Neal J.en_US
dc.creatorvan den Bosch, Remco C. E.en_US
dc.creatorLuo, Rongxinen_US
dc.creatorDrory, Niven_US
dc.creatorFabricius, Maximilianen_US
dc.creatorFisher, Daviden_US
dc.creatorHao, Leien_US
dc.creatorKaplan, Kyleen_US
dc.creatorMarinova, Irinaen_US
dc.creatorVutisalchavakul, Nalinen_US
dc.creatorYoachim, Peteren_US
dc.description.abstractWe 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.en_US
dc.description.sponsorshipNorman Hackerman Advanced Research Program (NHARP) ARP-03658-0234-2009en_US
dc.description.sponsorshipSigma Xi, The Scientific Research Societyen_US
dc.description.sponsorshipNSF AST-1109116en_US
dc.description.sponsorshipNational Natural Science Foundation of China 11073040en_US
dc.description.sponsorship973 Program of China 2009CB824800en_US
dc.description.sponsorshipShanghai Pujiang Talents Program 10pj1411800en_US
dc.identifier.citationBlanc, Guillermo A., Tim Weinzirl, Mimi Song, Amanda Heiderman, Karl Gebhardt, Shardha Jogee, I. I. Evans et al. >The VIRUS-P Exploration of Nearby Galaxies (VENGA): survey design, data processing, and spectral analysis methods.> arXiv preprint arXiv:1303.1552 (May., 2013).en_US
dc.relation.ispartofserialAstronomical Journalen_US
dc.rightsAdministrative deposit of works to Texas ScholarWorks: This works author(s) is or was a University faculty member, student or staff member; this article is already available through open access or the publisher allows a PDF version of the article to be freely posted online. The library makes the deposit as a matter of fair use (for scholarly, educational, and research purposes), and to preserve the work and further secure public access to the works of the University.en_US
dc.subjectgalaxies: generalen_US
dc.subjectgalaxies: kinematics and dynamicsen_US
dc.subjectgalaxies: spiralen_US
dc.subjectism: kinematics and dynamicsen_US
dc.subjectmethods: data analysisen_US
dc.subjectintegral-field spectroscopyen_US
dc.subjectstar-forming galaxiesen_US
dc.subjectextragalactic distance databaseen_US
dc.subjectvelocity dispersionsen_US
dc.subjectemission-line kinematicsen_US
dc.subjectactive galactic nucleien_US
dc.subjectwarm ionized mediumen_US
dc.subjectdigital sky surveyen_US
dc.subjectcold dark matteren_US
dc.subjectastronomy & astrophysicsen_US
dc.titleThe VIRUS-P Exploration Of Nearby Galaxies (VENGA): Survey Design, Data Processing, And Spectral Analysis Methodsen_US
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