Conversion of standardized ReadMe file for
file /./ftp/cats/J/ApJ/651/61 into FORTRAN code for reading data files line by line.
Note that special values are assigned to unknown or unspecified
numbers (also called NULL numbers);
when necessary, the coordinate components making up the right ascension
and declination are converted into floating-point numbers
representing these angles in degrees.
program load_ReadMe
C=============================================================================
C F77-compliant program generated by readme2f_1.81 (2015-09-23), on 2026-May-17
C=============================================================================
* This code was generated from the ReadMe file documenting a catalogue
* according to the "Standard for Documentation of Astronomical Catalogues"
* currently in use by the Astronomical Data Centers (CDS, ADC, A&A)
* (see full documentation at URL http://vizier.u-strasbg.fr/doc/catstd.htx)
* Please report problems or questions to
C=============================================================================
implicit none
* Unspecified or NULL values, generally corresponding to blank columns,
* are assigned one of the following special values:
* rNULL__ for unknown or NULL floating-point values
* iNULL__ for unknown or NULL integer values
real*4 rNULL__
integer*4 iNULL__
parameter (rNULL__=--2147483648.) ! NULL real number
parameter (iNULL__=(-2147483647-1)) ! NULL int number
integer idig ! testing NULL number
C=============================================================================
Cat. J/ApJ/651/61 Optically thick absorbers near luminous quasars (Hennawi+, 2006)
*================================================================================
*Quasars probing quasars. I. Optically thick absorbers near luminous quasars.
* Hennawi J.F., Prochaska J.X., Burles S., Strauss M.A., Richards G.T.,
* Schlegel D.J., Fan X., Schneider D.P., Zakamska N.L., Oguri M., Gunn J.E.,
* Lupton R.H., Brinkmann J.
* <Astrophys. J., 651, 61-83 (2006)>
* =2006ApJ...651...61H
C=============================================================================
C Internal variables
integer*4 i__
c - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
C Declarations for 'table1.dat' ! Optically thick absorption-line systems near
foreground quasars
integer*4 nr__
parameter (nr__=28) ! Number of records
character*97 ar__ ! Full-size record
character*15 System ! System name (SDSS JHHMM+DDMM)
character*1 n_System ! [a-d] Note on System (1)
real*4 zbg ! Background quasar redshift
real*4 zfg ! Foreground quasar redshift
real*4 Dthe ! (arcsec) Angular separation of the quasar pair
* sight lines (2)
integer*4 R ! (kpc) Radius (in (h^-1^kpc)
real*4 zabs ! Absorber redshift
integer*4 v_DV_ ! (km/s) Velocity difference between the absorber
* redshift and our best estimate of the
* redshift of the foreground quasar
integer*4 DVfg ! (km/s) Estimated error on the foreground quasar
* redshift
character*1 l_logNHI ! Limit flag on logNHI
real*4 logNHI ! ([cm-2]) ? Column density of the absorber from our fit
* to the HI profile
real*4 e_logNHI ! ([cm-2]) ? rms uncertainty on logNHI
integer*4 gUV ! Maximum enhancement of the quasar's ionizing
* photon flux over that of the extragalactic
* ionizing background, at the location of the
* background quasar sight line, assuming that
* gUV=1+F_QSO_/F_UVB_
* the quasar emission is isotropic
character*9 n_zfg ! Emission line that was centered to determine
* foreground quasar redshift (zfg)
character*6 obs_fg ! Instrument used to observed foreground quasar
character*6 obs_bg ! Instrument used to observed background quasar
*Note (1): Individual notes as follows:
* a = In the systems SDSS J0127+1507 there are two distinct background
* quasars at z=2.38 and 2.60, which show absorption in the
* vicinity of the same foreground quasar at z=1.818.
* b = The foreground quasar for this system has large BAL troughs in
* the Ly{alpha} and CIV emission lines. The redshift was computed
* by comparing the peak of CIV, determined by eye, to the shifted
* wavelength lambda=1545.3{AA} We apply a conservative redshift
* uncertainty of +/-1500km/s.
* c = In the systems SDSS J2347+1501, there is a single background
* quasar at z=2.29 and two foreground quasars at z=2.157 and
* 2.167, although the velocity separation is larger than our
* nominal 1500km/s cutoff for the former.
* d = Voigt profile fits to the Ly{alpha} absorption in the SDSS
* spectrum of the background quasar gave log(NHI)=19.55+/-0.3.
* An archive echelle spectrum of this quasar gives the smaller
* value that is listed in the table, logNHI=18.8+.-0.2.
*Note (2): The angular separation of the quasar pair sight lines corresponds
* to a transverse proper separation of R at the foreground quasar
* redshift.
c - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
C Declarations for 'table2.dat' ! Tentative optically thick absorption-line
systems near foreground quasars
integer*4 nr__1
parameter (nr__1=7) ! Number of records
character*97 ar__1 ! Full-size record
character*15 System_1 ! System name (SDSS JHHMM+DDMM)
character*1 n_System_1 ! [a-d] Note on System (1)
real*4 zbg_1 ! Background quasar redshift
real*4 zfg_1 ! Foreground quasar redshift
real*4 Dthe_1 ! (arcsec) Angular separation of the quasar pair
* sight lines (2)
integer*4 R_1 ! (kpc) Radius (in (h^-1^kpc)
real*4 zabs_1 ! Absorber redshift
integer*4 v_DV__1 ! (km/s) Velocity difference between the absorber
* redshift and our best estimate of the
* redshift of the foreground quasar
integer*4 DVfg_1 ! (km/s) Estimated error on the foreground quasar
* redshift
character*1 l_logNHI_1 ! Limit flag on logNHI
real*4 logNHI_1 ! ([cm-2]) ? Column density of the absorber from our fit
* to the HI profile
real*4 e_logNHI_1 ! ([cm-2]) ? rms uncertainty on logNHI
integer*4 gUV_1 ! Maximum enhancement of the quasar's ionizing
* photon flux over that of the extragalactic
* ionizing background, at the location of the
* background quasar sight line, assuming that
* gUV=1+F_QSO_/F_UVB_
* the quasar emission is isotropic
character*9 n_zfg_1 ! Emission line that was centered to determine
* foreground quasar redshift (zfg)
character*6 obs_fg_1 ! Instrument used to observed foreground quasar
character*6 obs_bg_1 ! Instrument used to observed background quasar
*Note (1): Individual notes as follows:
* a = In the systems SDSS J0127+1507 there are two distinct background
* quasars at z=2.38 and 2.60, which show absorption in the
* vicinity of the same foreground quasar at z=1.818.
* b = The foreground quasar for this system has large BAL troughs in
* the Ly{alpha} and CIV emission lines. The redshift was computed
* by comparing the peak of CIV, determined by eye, to the shifted
* wavelength lambda=1545.3{AA} We apply a conservative redshift
* uncertainty of +/-1500km/s.
* c = In the systems SDSS J2347+1501, there is a single background
* quasar at z=2.29 and two foreground quasars at z=2.157 and
* 2.167, although the velocity separation is larger than our
* nominal 1500km/s cutoff for the former.
* d = Voigt profile fits to the Ly{alpha} absorption in the SDSS
* spectrum of the background quasar gave log(NHI)=19.55+/-0.3.
* An archive echelle spectrum of this quasar gives the smaller
* value that is listed in the table, logNHI=18.8+.-0.2.
*Note (2): The angular separation of the quasar pair sight lines corresponds
* to a transverse proper separation of R at the foreground quasar
* redshift.
c - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
C Declarations for 'table3.dat' ! Coordinates and photometry for projected quasar
pairs in table 1
integer*4 nr__2
parameter (nr__2=54) ! Number of records
character*91 ar__2 ! Full-size record
C J2000 position composed of: RAh RAm RAs DE- DEd DEm DEs
real*8 RAdeg ! (deg) Right Ascension J2000
real*8 DEdeg ! (deg) Declination J2000
C ---------------------------------- ! (position vector(s) in degrees)
character*15 Name ! Quasar name (SDSS JHHMM+DDMM or 2QZ JHHMM+DDMM)
character*1 m_Name ! [A-E] Multiplicity index on Name (1)
integer*4 RAh ! (h) Right ascension (J2000)
integer*4 RAm ! (min) Right ascension (J2000)
real*4 RAs ! (s) Right ascension (J2000)
character*1 DE_ ! Declination sign (J2000)
integer*4 DEd ! (deg) Declination (J2000)
integer*4 DEm ! (arcmin) Declination (J2000)
real*4 DEs ! (arcsec) Declination (J2000)
real*4 z ! Spectroscopic redshift
real*4 umag ! (mag) Extinction-corrected SDSS u magnitude
real*4 gmag ! (mag) Extinction-corrected SDSS g magnitude
real*4 rmag ! (mag) Extinction-corrected SDSS r magnitude
real*4 imag ! (mag) Extinction-corrected SDSS i magnitude
real*4 zmag ! (mag) Extinction-corrected SDSS z magnitude
character*15 System_2 ! System name ((SDSS JHHMM+DDMM)
*Note (1): The background and foreground quasars are labeled A and B,
* respectively
c - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
C Declarations for 'table4.dat' ! Coordinates and photometry for projected quasar
pairs in table 2
integer*4 nr__3
parameter (nr__3=12) ! Number of records
character*91 ar__3 ! Full-size record
C J2000 position composed of: RAh RAm RAs DE- DEd DEm DEs
real*8 RAdeg_1 ! (deg) Right Ascension J2000
real*8 DEdeg_1 ! (deg) Declination J2000
C ---------------------------------- ! (position vector(s) in degrees)
character*15 Name_1 ! Quasar name (SDSS JHHMM+DDMM or 2QZ JHHMM+DDMM)
character*1 m_Name_1 ! [A-E] Multiplicity index on Name (1)
integer*4 RAh_1 ! (h) Right ascension (J2000)
integer*4 RAm_1 ! (min) Right ascension (J2000)
real*4 RAs_1 ! (s) Right ascension (J2000)
character*1 DE__1 ! Declination sign (J2000)
integer*4 DEd_1 ! (deg) Declination (J2000)
integer*4 DEm_1 ! (arcmin) Declination (J2000)
real*4 DEs_1 ! (arcsec) Declination (J2000)
real*4 z_1 ! Spectroscopic redshift
real*4 umag_1 ! (mag) Extinction-corrected SDSS u magnitude
real*4 gmag_1 ! (mag) Extinction-corrected SDSS g magnitude
real*4 rmag_1 ! (mag) Extinction-corrected SDSS r magnitude
real*4 imag_1 ! (mag) Extinction-corrected SDSS i magnitude
real*4 zmag_1 ! (mag) Extinction-corrected SDSS z magnitude
character*15 System_3 ! System name ((SDSS JHHMM+DDMM)
*Note (1): The background and foreground quasars are labeled A and B,
* respectively
c - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
C Declarations for 'table5.dat' ! Coordinates and photometry for the five quasars
in the projected group SDSS J0127+1507
integer*4 nr__4
parameter (nr__4=5) ! Number of records
character*91 ar__4 ! Full-size record
C J2000 position composed of: RAh RAm RAs DE- DEd DEm DEs
real*8 RAdeg_2 ! (deg) Right Ascension J2000
real*8 DEdeg_2 ! (deg) Declination J2000
C ---------------------------------- ! (position vector(s) in degrees)
character*15 Name_2 ! Quasar name (SDSS JHHMM+DDMM or 2QZ JHHMM+DDMM)
character*1 m_Name_2 ! [A-E] Multiplicity index on Name (1)
integer*4 RAh_2 ! (h) Right ascension (J2000)
integer*4 RAm_2 ! (min) Right ascension (J2000)
real*4 RAs_2 ! (s) Right ascension (J2000)
character*1 DE__2 ! Declination sign (J2000)
integer*4 DEd_2 ! (deg) Declination (J2000)
integer*4 DEm_2 ! (arcmin) Declination (J2000)
real*4 DEs_2 ! (arcsec) Declination (J2000)
real*4 z_2 ! Spectroscopic redshift
real*4 umag_2 ! (mag) Extinction-corrected SDSS u magnitude
real*4 gmag_2 ! (mag) Extinction-corrected SDSS g magnitude
real*4 rmag_2 ! (mag) Extinction-corrected SDSS r magnitude
real*4 imag_2 ! (mag) Extinction-corrected SDSS i magnitude
real*4 zmag_2 ! (mag) Extinction-corrected SDSS z magnitude
character*15 System_4 ! System name ((SDSS JHHMM+DDMM)
*Note (1): The background and foreground quasars are labeled A and B,
* respectively
C=============================================================================
C Loading file 'table1.dat' ! Optically thick absorption-line systems near
* foreground quasars
C Format for file interpretation
1 format(
+ A15,A1,1X,F4.2,1X,F5.3,1X,F5.1,1X,I4,1X,F6.4,1X,I4,1X,I4,1X,
+ A1,F5.2,1X,F4.2,1X,I4,1X,A9,1X,A6,2X,A6)
C Effective file loading
open(unit=1,status='old',file=
+'table1.dat')
write(6,*) '....Loading file: table1.dat'
do i__=1,28
read(1,'(A97)')ar__
read(ar__,1)
+ System,n_System,zbg,zfg,Dthe,R,zabs,v_DV_,DVfg,l_logNHI,
+ logNHI,e_logNHI,gUV,n_zfg,obs_fg,obs_bg
if(ar__(58:62) .EQ. '') logNHI = rNULL__
if(ar__(64:67) .EQ. '') e_logNHI = rNULL__
c ..............Just test output...........
write(6,1)
+ System,n_System,zbg,zfg,Dthe,R,zabs,v_DV_,DVfg,l_logNHI,
+ logNHI,e_logNHI,gUV,n_zfg,obs_fg,obs_bg
c .......End.of.Just test output...........
end do
close(1)
C=============================================================================
C Loading file 'table2.dat' ! Tentative optically thick absorption-line
* systems near foreground quasars
C Format for file interpretation
2 format(
+ A15,A1,1X,F4.2,1X,F5.3,1X,F5.1,1X,I4,1X,F6.4,1X,I4,1X,I4,1X,
+ A1,F5.2,1X,F4.2,1X,I4,1X,A9,1X,A6,2X,A6)
C Effective file loading
open(unit=1,status='old',file=
+'table2.dat')
write(6,*) '....Loading file: table2.dat'
do i__=1,7
read(1,'(A97)')ar__1
read(ar__1,2)
+ System_1,n_System_1,zbg_1,zfg_1,Dthe_1,R_1,zabs_1,v_DV__1,
+ DVfg_1,l_logNHI_1,logNHI_1,e_logNHI_1,gUV_1,n_zfg_1,obs_fg_1,
+ obs_bg_1
if(ar__1(58:62) .EQ. '') logNHI_1 = rNULL__
if(ar__1(64:67) .EQ. '') e_logNHI_1 = rNULL__
c ..............Just test output...........
write(6,2)
+ System_1,n_System_1,zbg_1,zfg_1,Dthe_1,R_1,zabs_1,v_DV__1,
+ DVfg_1,l_logNHI_1,logNHI_1,e_logNHI_1,gUV_1,n_zfg_1,obs_fg_1,
+ obs_bg_1
c .......End.of.Just test output...........
end do
close(1)
C=============================================================================
C Loading file 'table3.dat' ! Coordinates and photometry for projected quasar
* pairs in table 1
C Format for file interpretation
3 format(
+ A15,A1,1X,I2,1X,I2,1X,F5.2,1X,A1,I2,1X,I2,1X,F4.1,1X,F4.2,1X,
+ F5.2,1X,F5.2,1X,F5.2,1X,F5.2,1X,F5.2,1X,A15)
C Effective file loading
open(unit=1,status='old',file=
+'table3.dat')
write(6,*) '....Loading file: table3.dat'
do i__=1,54
read(1,'(A91)')ar__2
read(ar__2,3)
+ Name,m_Name,RAh,RAm,RAs,DE_,DEd,DEm,DEs,z,umag,gmag,rmag,imag,
+ zmag,System_2
RAdeg = rNULL__
DEdeg = rNULL__
c Derive coordinates RAdeg and DEdeg from input data
c (RAdeg and DEdeg are set to rNULL__ when unknown)
if(RAh .GT. -180) RAdeg=RAh*15.
if(RAm .GT. -180) RAdeg=RAdeg+RAm/4.
if(RAs .GT. -180) RAdeg=RAdeg+RAs/240.
if(DEd .GE. 0) DEdeg=DEd
if(DEm .GE. 0) DEdeg=DEdeg+DEm/60.
if(DEs .GE. 0) DEdeg=DEdeg+DEs/3600.
if(DE_.EQ.'-'.AND.DEdeg.GE.0) DEdeg=-DEdeg
c ..............Just test output...........
write(6,3)
+ Name,m_Name,RAh,RAm,RAs,DE_,DEd,DEm,DEs,z,umag,gmag,rmag,imag,
+ zmag,System_2
write(6,'(6H Pos: 2F8.4)') RAdeg,DEdeg
c .......End.of.Just test output...........
end do
close(1)
C=============================================================================
C Loading file 'table4.dat' ! Coordinates and photometry for projected quasar
* pairs in table 2
C Format for file interpretation
4 format(
+ A15,A1,1X,I2,1X,I2,1X,F5.2,1X,A1,I2,1X,I2,1X,F4.1,1X,F4.2,1X,
+ F5.2,1X,F5.2,1X,F5.2,1X,F5.2,1X,F5.2,1X,A15)
C Effective file loading
open(unit=1,status='old',file=
+'table4.dat')
write(6,*) '....Loading file: table4.dat'
do i__=1,12
read(1,'(A91)')ar__3
read(ar__3,4)
+ Name_1,m_Name_1,RAh_1,RAm_1,RAs_1,DE__1,DEd_1,DEm_1,DEs_1,z_1,
+ umag_1,gmag_1,rmag_1,imag_1,zmag_1,System_3
RAdeg_1 = rNULL__
DEdeg_1 = rNULL__
c Derive coordinates RAdeg_1 and DEdeg_1 from input data
c (RAdeg_1 and DEdeg_1 are set to rNULL__ when unknown)
if(RAh_1 .GT. -180) RAdeg_1=RAh_1*15.
if(RAm_1 .GT. -180) RAdeg_1=RAdeg_1+RAm_1/4.
if(RAs_1 .GT. -180) RAdeg_1=RAdeg_1+RAs_1/240.
if(DEd_1 .GE. 0) DEdeg_1=DEd_1
if(DEm_1 .GE. 0) DEdeg_1=DEdeg_1+DEm_1/60.
if(DEs_1 .GE. 0) DEdeg_1=DEdeg_1+DEs_1/3600.
if(DE__1.EQ.'-'.AND.DEdeg_1.GE.0) DEdeg_1=-DEdeg_1
c ..............Just test output...........
write(6,4)
+ Name_1,m_Name_1,RAh_1,RAm_1,RAs_1,DE__1,DEd_1,DEm_1,DEs_1,z_1,
+ umag_1,gmag_1,rmag_1,imag_1,zmag_1,System_3
write(6,'(6H Pos: 2F8.4)') RAdeg_1,DEdeg_1
c .......End.of.Just test output...........
end do
close(1)
C=============================================================================
C Loading file 'table5.dat' ! Coordinates and photometry for the five quasars
* in the projected group SDSS J0127+1507
C Format for file interpretation
5 format(
+ A15,A1,1X,I2,1X,I2,1X,F5.2,1X,A1,I2,1X,I2,1X,F4.1,1X,F4.2,1X,
+ F5.2,1X,F5.2,1X,F5.2,1X,F5.2,1X,F5.2,1X,A15)
C Effective file loading
open(unit=1,status='old',file=
+'table5.dat')
write(6,*) '....Loading file: table5.dat'
do i__=1,5
read(1,'(A91)')ar__4
read(ar__4,5)
+ Name_2,m_Name_2,RAh_2,RAm_2,RAs_2,DE__2,DEd_2,DEm_2,DEs_2,z_2,
+ umag_2,gmag_2,rmag_2,imag_2,zmag_2,System_4
RAdeg_2 = rNULL__
DEdeg_2 = rNULL__
c Derive coordinates RAdeg_2 and DEdeg_2 from input data
c (RAdeg_2 and DEdeg_2 are set to rNULL__ when unknown)
if(RAh_2 .GT. -180) RAdeg_2=RAh_2*15.
if(RAm_2 .GT. -180) RAdeg_2=RAdeg_2+RAm_2/4.
if(RAs_2 .GT. -180) RAdeg_2=RAdeg_2+RAs_2/240.
if(DEd_2 .GE. 0) DEdeg_2=DEd_2
if(DEm_2 .GE. 0) DEdeg_2=DEdeg_2+DEm_2/60.
if(DEs_2 .GE. 0) DEdeg_2=DEdeg_2+DEs_2/3600.
if(DE__2.EQ.'-'.AND.DEdeg_2.GE.0) DEdeg_2=-DEdeg_2
c ..............Just test output...........
write(6,5)
+ Name_2,m_Name_2,RAh_2,RAm_2,RAs_2,DE__2,DEd_2,DEm_2,DEs_2,z_2,
+ umag_2,gmag_2,rmag_2,imag_2,zmag_2,System_4
write(6,'(6H Pos: 2F8.4)') RAdeg_2,DEdeg_2
c .......End.of.Just test output...........
end do
close(1)
C=============================================================================
stop
end