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Simple Target
List Of Targets
Fast Xmatch with large catalogs or Simbad
Target
Name (resolved by
Sesame
) or
Position
:
J2000
B1975
B1950
B1900
B1875
B1855
Galactic
Supergal.
Ecl.J2000
Target dimension:
deg
arcmin
arcsec
NB: The epoch used for the query is the original epoch of the table(s)
Radius
Box size
J/ApJ/651/61
2021
Optically thick absorbers near luminous quasars (Hennawi+, 2006)
ReadMe+ftp
2006ApJ...651...61H
Similar Catalogs
Post annotation
1.
J/ApJ/651/61/ALS
Confirmed or Tentative optically thick absorption-line systems near foreground quasars
(35 rows)
meta
J/ApJ/651/61/ALS
2.
J/ApJ/651/61/photom
(c)
Coordinates and photometry for projected quasar pairs in tables 1 and 2
(71 rows)
meta
J/ApJ/651/61/photom
Simple Constraint
List Of Constraints
Query by
Constraints
applied on Columns
(
Output Order:
+
-
)
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Column
Constraint
Explain
(
UCD
)
(ALL)
recno
Record number assigned by the VizieR team. Should Not be used for identification.
(
meta.record
)
(
RECORD
)
(ALL)
Type
(char)
O
for Opticaly thick assorption-line system, or
t
for Tentative opticaly thick assorption-line systems,
a
for the five quasars on system J0127+1507
(
meta.code
)
(
CODE_MISC
)
(ALL)
System
(char)
(i)
System name (SDSS JHHMM+DDMM)
(
meta.id;meta.main
)
(
ID_MAIN
)
(1)
n_System
(char)
[a-d] Note on System
(Note 1)
(
meta.note
)
(
NOTE
)
(1)
zbg
Background quasar redshift
(
src.redshift
)
(
REDSHIFT_HC
)
(1)
zfg
Foreground quasar redshift
(
src.redshift
)
(
REDSHIFT_HC
)
(1)
Dthe
arcsec
Angular separation of the quasar pair sight lines
(Note 2)
(
pos.angDistance
)
(
POS_ANG_DIST_GENERAL
)
(1)
R
kpc
Radius (in (h
–1
kpc)
(
phys.size.radius
)
(
PHYS_SIZE_RADIUS_GENERAL
)
(1)
zabs
Absorber redshift
(
src.redshift
)
(
REDSHIFT_HC
)
(1)
|DV|
km/s
Velocity difference between the absorber redshift and our best estimate of the redshift of the foreground quasar
(
phys.veloc;arith.diff
)
(
VELOC_DIFF
)
(1)
DVfg
km/s
Estimated error on the foreground quasar redshift
(
stat.error
)
(
ERROR
)
ALL
cols
(i)
indexed column
(1)
l_logNHI
(char)
Limit flag on logNHI
(
meta.code.error
)
(
CODE_LIMIT
)
(1)
logNHI
[cm-2]
(n)
Column density of the absorber from our fit to the HI profile
(
stat.weight
)
(
PHYS_COLUMN_DENSITY
)
(1)
e_logNHI
[cm-2]
(n)
rms uncertainty on logNHI
(
stat.error
)
(
ERROR
)
(1)
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
(
phot.flux;arith.ratio
)
(
SPECT_FLUX_RATIO
)
(1)
n_zfg
(char)
Emission line that was centered to determine foreground quasar redshift (zfg)
(
meta.note
)
(
NOTE
)
(1)
obs.fg
(char)
Instrument used to observed foreground quasar
(
meta.id;instr
)
(
INST_ID
)
(1)
obs.bg
(char)
Instrument used to observed background quasar
(
meta.id;instr
)
(
INST_ID
)
(2)
Name
(char)
Quasar name (SDSS JHHMM+DDMM or 2QZ JHHMM+DDMM)
(
meta.id;meta.main
)
(
ID_MAIN
)
(2)
m_Name
(char)
[A-E] Multiplicity index on Name
(Note 1)
(
meta.code.multip
)
(
CODE_MULT_INDEX
)
(2)
RAJ2000
"h:m:s"
(i)
Right ascension (J2000)
(
pos.eq.ra;meta.main
)
(
POS_EQ_RA_MAIN
)
(2)
DEJ2000
"d:m:s"
(i)
Declination (J2000)
(
pos.eq.dec;meta.main
)
(
POS_EQ_DEC_MAIN
)
(2)
z
Spectroscopic redshift
(
src.redshift
)
(
REDSHIFT_HC
)
(2)
umag
mag
Extinction-corrected SDSS u magnitude
(
phot.mag;em.opt.U
)
(
PHOT_SDSS_U
)
(2)
gmag
mag
Extinction-corrected SDSS g magnitude
(
phot.mag;em.opt.B
)
(
PHOT_SDSS_G
)
(2)
rmag
mag
Extinction-corrected SDSS r magnitude
(
phot.mag;em.opt.R
)
(
PHOT_SDSS_R
)
(2)
imag
mag
Extinction-corrected SDSS i magnitude
(
phot.mag;em.opt.I
)
(
PHOT_SDSS_I
)
(2)
zmag
mag
Extinction-corrected SDSS z magnitude
(
phot.mag;em.opt.I
)
(
PHOT_SDSS_Z
)
(2)
SDSS
(char)
Display the SDSS data for this quasar
(
meta.ref.url
)
(
DATA_LINK
)
ALL
cols
(n)
indicates a possible blank or NULL column
(i)
indexed column
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UCD1
https://cdsannotations.u-strasbg.fr/annotations/vizierTable//
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