J/MNRAS/394/340 SDSS photometry of HI-selected galaxies (Garcia-Appadoo+, 2009)
Correlations among the properties of galaxies found in a blind HI survey,
which also have SDSS optical data.
Garcia-Appadoo D.A., West A.A., Dalcanton J.J., Cortese L., Disney M.J.
<Mon. Not. R. Astron. Soc. 394, 340 (2009)>
=2009MNRAS.394..340G 2009MNRAS.394..340G
ADC_Keywords: Galaxies, photometry ; H I data ; Photometry, SDSS
Keywords: galaxies: evolution - galaxies: fundamental parameters -
galaxies: general - galaxies: peculiar - galaxies: structure
Abstract:
We have used the Parkes Multibeam system and the Sloan Digital Sky
Survey to assemble a sample of 195 galaxies selected originally from
their HI signature to avoid biases against unevolved or low surface
brightness objects. For each source nine intrinsic properties are
measured homogeneously, as well as inclination and an optical
spectrum. The sample, which should be almost entirely free of either
misidentification or confusion, includes a wide diversity of galaxies
ranging from inchoate, low surface brightness dwarfs to giant spirals.
Despite this diversity there are five clear correlations among their
properties. They include a common dynamical mass-to-light ratio within
their optical radii, a correlation between surface brightness and
luminosity and a common HI surface density. Such correlation should
provide strong constrains on models of galaxy formation and evolution.
Description:
The observations were carried out with the Parkes 64-m radio telescope
using the Multibeam System in which 13 adjacent beams employing 26
receivers track the sky at a rate of 1°/min, returning several
times to the same piece of sky weeks apart to minimize interference.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 67 195 HI properties of the Equatorial Strip (ES) sample
table5.dat 107 195 Petrosian photometry of the ES sample
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See also:
VIII/73 : HI Parkes All Sky Survey Catalogue (HIPASS) (Meyer+, 2004)
II/294 : The SDSS Photometric Catalog, Release 7 (Adelman-McCarthy+, 2009)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- --- [HIPEQ]
6- 12 A7 --- HIPEQ ES source name (HHMM+DD,
in Simbad)
13 A1 --- m_HIPEQ [ab] Multiplicity index on HIPEQ
15- 16 I2 h RAh Fitted HI right ascension (J2000)
18- 19 I2 min RAm Fitted HI right ascension (J2000)
21- 22 I2 s RAs Fitted HI right ascension (J2000)
24 A1 --- DE- Fitted HI declination sign (J2000)
25- 26 I2 deg DEd Fitted HI declination (J2000)
28- 29 I2 arcmin DEm Fitted HI declination (J2000)
31- 32 I2 arcsec DEs Fitted HI declination (J2000)
34- 38 F5.3 Jy Speak HI peak flux density
40- 45 F6.2 Jy.km/s Sint Integrated HI flux density
47- 50 I4 km/s VHI HI systematic velocity, Vsys, measured at the
20% level of peak flux density
52- 54 I3 km/s W20 Velocity linewidth, W20, measured at the
20% level of the peak flux
56- 61 F6.2 Mpc Dist Distance (see text for description)
63- 67 F5.2 [solMass] logMHI Logarithm of the HI mass, calculated using
equation (3) (see text)
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 5 A5 --- --- [HIPEQ]
6- 12 A7 --- HIPEQ ES source name (HHMM+DD,
HIPEQ JHHMM+DD in Simbad)
13 A1 --- m_HIPEQ [ab] Multiplicity index on HIPEQ
15- 16 I2 h RAOh Right ascension of optical position of
SDSS-DR2 source (J2000)
18- 19 I2 min RAOm Right ascension of optical position of
SDSS-DR2 source (J2000)
21- 22 I2 s RAOs Right ascension of optical position of
SDSS-DR2 source (J2000)
24 A1 --- DEO- Declination sign of optical position of
SDSS-DR2 source (J2000)
25- 26 I2 deg DEOd Declination of optical position of
SDSS-DR2 source (J2000)
28- 29 I2 arcmin DEOm Declination of optical position of
SDSS-DR2 source (J2000)
31- 32 I2 arcsec DEOs Declination of optical position of
SDSS-DR2 source (J2000)
34- 38 F5.2 mag umag Petrosian SDSS u magnitude (1)
40- 43 F4.2 mag e_umag rms uncertainty on umag
45- 49 F5.2 mag gmag Petrosian SDSS g magnitude (1)
51- 54 F4.2 mag e_gmag rms uncertainty on gmag
56- 60 F5.2 mag rmag Petrosian SDSS r magnitude (1)
62- 65 F4.2 mag e_rmag rms uncertainty on rmag
67- 71 F5.2 mag imag Petrosian SDSS i magnitude (1)
73- 76 F4.2 mag e_imag rms uncertainty on imag
78- 82 F5.2 mag zmag Petrosian SDSS z magnitude (1)
84- 87 F4.2 mag e_zmag rms uncertainty on zmag
89- 93 F5.1 arcsec R50 g-band semimajor axes that encompass 50% of
the total Petrosian flux
95- 97 F3.1 arcsec e_R50 rms uncertainty on PetroR50
99-103 F5.1 arcsec R90 g-band semimajor axes that encompass 90% of
the total Petrosian flux
105-107 F3.1 arcsec e_R90 rms uncertainty on PetroR90
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Note (1): Petrosian magnitudes in each SDSS band u, g, r, i, z.
Unlike the native SDSS-DR2 Petrosian magnitudes, our Petrosian
apertures are elliptical. The shape of each aperture is defined from
two-dimensional Sersic fits and we use the g band to measure both the
shape and size of each Petrosian aperture. For some galaxies in the
sample, a Sersic profile was not a good fit. In these cases, a
circular aperture was used. All of the SDSS data are described in West
et al., 2010AJ....139..315W 2010AJ....139..315W
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 14-Jun-2010