J/AJ/136/2563 HI Nearby Galaxy Survey, THINGS (Walter+, 2008)
THINGS: the H I Nearby Galaxy Survey.
Walter F., Brinks E., De Blok W.J.G., Bigiel F., Kennicutt R.C.,
Thornley M.D., Leroy A.
<Astron. J., 136, 2563-2647 (2008)>
=2008AJ....136.2563W 2008AJ....136.2563W
ADC_Keywords: Galaxies, nearby ; H I data ; Radio lines
Keywords: galaxies: ISM - galaxies: structure - ISM: atoms - ISM: general -
radio lines: galaxies - surveys
Abstract:
We present "The HI Nearby Galaxy Survey (THINGS)," a high spectral
(≤5.2km/s) and spatial (∼6") resolution survey of HI 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 HI 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≲D≳15Mpc (resulting in linear resolutions of ∼100 to
500pc) are targeted in THINGS, covering a wide range of star formation
rates (∼10-3 to 6M☉/yr), total HI masses MHI (0.01 to
14x109M☉), absolute luminosities MB (-11.5 to -21.7mag), 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 HI 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 (http://www.mpia.de/THINGS). 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.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 115 34 Properties of THINGS sample galaxies
refs.dat 138 28 References
table4.dat 32 2688 HI spectra based on the blanked natural
weighted cubes
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See also:
http://www.mpia.de/THINGS : THINGS Home Page
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Name Galaxy name
10- 24 A15 --- AName Alternative names
26- 27 I2 h RAh Right ascension (J2000)
29- 30 I2 min RAm Right ascension (J2000)
32- 35 F4.1 s RAs Right ascension (J2000)
37 A1 --- DE- Declination sign (J2000)
38- 39 I2 deg DEd Declination (J2000)
41- 42 I2 arcmin DEm Declination (J2000)
44- 45 I2 arcsec DEs Declination (J2000)
47- 49 A3 --- s Source for position, in refs.dat file
51- 54 F4.1 Mpc Dist Distance
56- 60 A5 --- r_Dist Reference for Dist, in refs.dat file
62- 65 F4.2 [0.1arcmin] logD25 Optical size (1)
66 A1 --- n_logD25 [*] Holmberg diameter for M81 dwA
68- 72 F5.2 mag Bmag Apparent blue magnitude (3)
74- 79 F6.2 mag BMAG Absolute B magnitude derived from
Bmag and Dist
81- 82 I2 deg i Inclination
84- 86 I3 deg PA Position angle
88- 91 A4 --- r_PA Reference for PA and Incl, in refs.dat file
93- 96 F4.2 [-] Metal ?=- Metallicity, 12+log(O/H)
98-100 A3 --- r_Metal Reference for metallicity, in refs.dat file
102-106 F5.3 Msun/yr SFR ?=- Star formation rate (4)
108-110 A3 --- r_SFR Reference for SFR, in refs.dat file
112-113 I2 --- TT Morphological type from LEDA
115 A1 --- Note [WB] WHISP or Braun target (5)
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Note (1): Optical size (taken from LEDA; LEDA.UNIV-LYON.FR) and
Karachentsev et al., 2004, Cat. J/AJ/127/2031
Note (3): Apparent blue magnitude, corrected for Galactic foreground
extinction and extinction internal to the galaxy from LEDA.
Note (4): Star formation rates. Derived from fluxes published in the
literature and corrected for our adopted distances:
Note (5): Note as follows:
W = WHISP target (e.g. Swaters et al., 2002A&A...390..829S 2002A&A...390..829S)
B = target studied by Braun, 1995A&AS..114..409B 1995A&AS..114..409B.
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- Ref Reference code
7- 25 A19 --- BibCode BibCode
27- 51 A25 --- Aut Atuhor's name
53-138 A86 --- Com Comments
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Name Galaxy name
13- 21 F9.3 km/s Vel Velocity
23- 32 E10.5 Jy SHI ?=0 HI flux density
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 18-Jun-2011