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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents

ID: 421425.0, MPI für Astronomie / Publikationen_mpia
Things: the H I Nearby Galaxy Survey
Authors:Walter, Fabian; Brinks, Elias; de Blok, W. J. G.; Bigiel, Frank; Kennicutt, Robert C.; Thornley, Michele D.; Leroy, Adam
Date of Publication (YYYY-MM-DD):2008
Title of Journal:The Astronomical Journal
Journal Abbrev.:AJ
Start Page:2563
End Page:2647
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:We present "The H I Nearby Galaxy Survey (THINGS)," a high spectral (<=5.2 km s 1) and spatial (~6'') resolution survey of H I emission in 34 nearby galaxies obtained using the NRAO Very Large Array (VLA). The overarching scientific goal of THINGS is to investigate fundamental characteristics of the interstellar medium (ISM) related to galaxy morphology, star formation, and mass distribution across the Hubble sequence. Unique characteristics of the THINGS database are the homogeneous sensitivity as well as spatial and velocity resolution of the H I data, which is at the limit of what can be achieved with the VLA for a significant number of galaxies. A sample of 34 objects at distances 2 lsim D lsim 15 Mpc (resulting in linear resolutions of ~100 to 500 pc) are targeted in THINGS, covering a wide range of star formation rates (~10 3 to 6 M sun yr 1), total H I masses M HI (0.01 to 14 × 109 M sun), absolute luminosities M B ( 11.5 to 21.7 mag), and metallicities (7.5 to 9.2 in units of 12+log[O/H]). We describe the setup of the VLA observations, the data reduction procedures, and the creation of the final THINGS data products. We present an atlas of the integrated H I maps, the velocity fields, the second moment (velocity dispersion) maps and individual channel maps of each THINGS galaxy. The THINGS data products are made publicly available through a dedicated webpage. Accompanying THINGS papers (in this issue of the Astronomical Journal) address issues such as the small-scale structure of the ISM, the (dark) matter distribution in THINGS galaxies, and the processes leading to star formation.
Free Keywords:galaxies: ISM; galaxies: structure; ISM: atoms; ISM: general; radio lines: galaxies; surveys
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:URL: [ID No:1]
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