Access to Astronomical Catalogues

← Click to display the menu
J/ApJ/613/914    Star formation in HI-selected galaxies       (Helmboldt+, 2004)

Star formation in HI-selected galaxies. I. Sample characteristics. Helmboldt J.F., Walterbos R.A.M., Bothun G.D., O'Neil K., De Blok W.J.G. <Astrophys. J., 613, 914-932 (2004)> =2004ApJ...613..914H
ADC_Keywords: Galaxies, photometry ; Galaxies, radio ; Equivalent widths Keywords: galaxies: ISM - galaxies: photometry - galaxies: stellar content Abstract: A sample of 69 galaxies with radial velocities of less than 2500km/s was selected from the HI Parkes All-Sky Survey (HIPASS, Cat. VIII/73) and imaged in broadband B and R and narrowband Hα, to deduce details about star formation in nearby disk galaxies while avoiding surface brightness selection effects. Description: Data were acquired during two separate observing runs. Images were obtained at Cerro Tololo Inter-American Observatory (CTIO) with the 0.9m telescope and the Tek 2Kx2K CCD camera during both runs, one on 2000 March 3-9 and the other on 2000 October 23-28 and November 2, 5, and 6. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 112 71 Observations table4.dat 51 69 Isophotal Data table5.dat 63 69 Surface brightness profile data table6.dat 71 69 Emission line data
See also: VIII/73 : HI Parkes All Sky Survey Catalogue (HIPASS) (Meyer+, 2004) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 31 A31 --- Date Observation location and dates 33- 45 A13 --- Name Galaxy name 47- 52 I6 --- UTDate UT Date of observation 54- 55 I2 h RAh NED Hour of Right Ascension (J2000) 57- 58 I2 min RAm NED Minute of Right Ascension (J2000) 60- 64 F5.2 s RAs NED Second of Right Ascension (J2000) 66 A1 --- DE- Sign of the NED Declination (J2000) 67- 68 I2 deg DEd NED Degree of Declination (J2000) 70- 71 I2 arcmin DEm NED Arcminute of Declination (J2000) 73- 76 F4.1 arcsec DEs NED Arcsecond of Declination (J2000) 78 I1 --- nB B band number of exposures 80 A1 --- --- [X] 82- 84 I3 s tB B band exposure time 86 I1 --- nR ? R band number of exposures 88 A1 --- --- [X] 90- 92 A3 s tR ? R band exposure time 94 I1 --- nHa ? Hα band exposure time 96 A1 --- --- [X] 98-101 I4 --- tHa ? The Hα band exposure time 103-111 A9 --- Ha Halpha filter description (1)
Note (1): Hα filter used during observation(s); the 657, 658, 659, 660, & 661nm filters are the 30Å Rand filters; the 6563, 6600, 6618, & 6653Å filters are the NOAO 75Å filters.
Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 13 A13 --- Name Galaxy name 15 A1 --- f_Name [*] Flag on Name (G1) 16 A1 --- i26 [d] data are for the 26mag/arcsec2 isophote. 18- 23 A6 --- MType Morphological type (2) 25- 27 I3 arcsec R25 The 25 mag/arcsec2 isophotal radius 29- 32 F4.1 mag B25mag The B band isophotal magnitude within R25 34- 37 F4.1 mag R25mag The R band isophotal magnitude within R25 39- 43 F5.3 mag E(B-V) The (B-V) color excess 45- 46 I2 deg Inc Inclination 48- 50 I3 deg PA [-90/128] Position angle (3)
Note (2): Morphological type, in the de Vaucouleurs classification system. Note (3): Position angle measured from North through East.
Byte-by-byte Description of file: table5.dat
Bytes Format Units Label Explanations
1- 13 A13 --- Name Galaxy name 15 A1 --- f_Name [*] Flag on Name (G1) 17- 20 F4.1 mag Bmag Total extrapolated B band magnitude 22- 25 F4.1 mag Rmag Total extrapolated R band magnitude 27- 31 F5.2 mag B-R The (B-R) color index within Rad (2) 33- 37 F5.1 arcsec Rad Effective radius 39- 42 F4.1 mag/arcsec2 muBe The B band surface brightness at Rad 44- 47 F4.1 mag/arcsec2 muRe The R band surface brightness at Rad 49- 52 F4.1 arcsec Dscl Disk scale length 54- 57 F4.1 mag/arcsec2 muBo Extrapolated B band disk central surface brightness (2) 59- 62 F4.1 mag/arcsec2 muRo Extrapolated R band disk central surface brightness (2)
Note (2): All colors and central surface brightnesses were corrected for Galactic extinction using E(B-V) values quoted in the NASA/IPAC Extragalactic Database (NED) and E(B-V) to Aν conversion factors provided by Schlegel et al. (1998ApJ...500..525S).
Byte-by-byte Description of file: table6.dat
Bytes Format Units Label Explanations
1- 13 A13 --- Name Galaxy name 15 A1 --- f_Name [*] Flag on Name (G1) 16 A1 --- n_logHa [s] Halpha flux calibration (1) 18- 23 F6.2 [mW/m2] log(Ha+NII) ? Log of the observed Hα+[NII] flux in units of ergs/s/cm2 25- 30 F6.2 [mW/m2] logHa ? Log of the Halpha flux in units of ergs/s/cm2 (2) 32- 37 F6.1 0.1nm EW(Ha+NII) ? Observed equivalent width of Hα+[NII] in units of Angstroms 39- 44 F6.1 0.1nm EWHa ? Equivalent width of Halpha in units of Angstroms (3) 46- 50 F5.1 Jy.km/s SHI Integrated 21 cm flux 52- 55 F4.2 solMass/solLum MHI/LB The B band gas-to-light ratio (4) 57- 60 F4.2 solMass/solLum MHI/LR The R band gas-to-light ratio (4) 62- 65 I4 km/s RV Measured radial velocity 67- 70 I4 km/s RVcorr Corrected radial velocity (5)
Note (1): 's' indicates that the Hα flux was calibrated using the R-band flux. Note (2): Hα flux corrected for [NII] emission and Galatic and internal extinction. Note (3): Hα equivalent width corrected for [NII] emission. Note (4): B and R band gas-to-light ratio corrected for Galactic extinction. Note (5): Radial velocity corrected for Virgo-centric infall relative to the rest frame of the Local Group.
Global Notes: Note (G1): the asterisk (*) indicates that galaxy image was most likely taken through clouds and the values listed should be taken as estimates only.
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 23-Mar-2005
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

catalogue service

© UDS/CNRS

Contact