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. =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{deg}/min, returning several times to the same piece of sky weeks apart to minimize interference. File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- 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 -------------------------------------------------------------------------------- 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 -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 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) -------------------------------------------------------------------------------- Byte-by-byte Description of file: table5.dat -------------------------------------------------------------------------------- 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 -------------------------------------------------------------------------------- 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 -------------------------------------------------------------------------------- History: From electronic version of the journal ================================================================================ (End) Patricia Vannier [CDS] 14-Jun-2010