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J/ApJ/636/631      Lyman-alpha forest toward PKS 0405-123      (Williger+, 2006)

The low-redshift Lyα forest toward PKS 0405-123. Williger G.M., Heap S.R., Weymann R.J., Dave R., Ellingson E., Carswell R.F., Tripp T.M., Jenkins E.B. <Astrophys. J., 636, 631-653 (2006)> =2006ApJ...636..631W
ADC_Keywords: QSOs ; Redshifts ; Spectroscopy Keywords: cosmology: observations - intergalactic medium - quasars: absorption lines Abstract: We present results for Lyα forest and metal absorbers from ∼7km/s resolution Space Telescope Imaging Spectrograph (STIS) data for QSO PKS 0405-123 (z=0.574). We analyze strong and weak samples of Lyα forest lines, containing 60 absorbers with column density log N(HI)≥13.3 over 0.002<z<0.423 and 44 with logN(HI)≥13.1 over 0.020<z<0.234, respectively. Description: PKS 0405-123 was observed with HST and STIS using grating E140M for 10 orbits (27,208s) on 1999 January 24 and 1999 March 7. Direct images in Gunn r and multiobject spectroscopic observations of galaxies in the PKS 0405-123 field were made on 1995 January 2 UT at the Canada-France Hawaii Telescope (CFHT), using the Multi-Object Spectrograph (MOS), the O300 grism, and the z5 band-limiting filter. Objects: ---------------------------------------------------------- RA (2000) DE Designation(s) ---------------------------------------------------------- 04 07 48.4 -12 11 37 PKS 0405-123 = QSO J0407-1211 ---------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 126 231 Absorption lines toward PKS 0405-123 table4.dat 72 15 Lyα forest pairs with Δv<250km/s and logN(HI)≥13.3 table5.dat 75 73 Galaxies around PKS 0405-123
See also: J/A+A/373/757 : Lyman-Alpha forest of 3 QSOs (Kim+, 2001) J/A+A/391/L11 : Lyman alpha forest in HE 0515-4414 (Janknecht+ 2002) J/MNRAS/335/555 : Lyman-alpha forest of 5 QSOs (Kim+, 2002) J/ApJ/617/718 : Atomic data and EW for PKS 0405-123 (Prochaska+, 2004) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 5 A5 --- Species Species name and ionization stage 7- 15 F9.6 --- z Redshift 17- 24 F8.6 --- e_z ? The 1sigma error in z (1) 26- 30 F5.1 km/s b ? Doppler parameter 32- 35 F4.1 km/s e_b ? The 1sigma error in b (1) 37 A1 --- l_logN Limit flag on logN 39- 44 F6.3 [cm-2] logN Log of the HI column density 46- 50 F5.3 [cm-2] e_logN ? The 1sigma error in logN (1) 52-122 A71 --- Lines Line(s) used in profile fits or remarks (2) 124-126 A3 --- Rem Remarks on lines (3)
Note (1): Assumes that the component structure is correct. Note (2): λλ denotes a doublet. Some ≥4σ features in the STIS data, in particular blueward of ∼1200Å, correspond to higher order Lyman lines which did not provide useful constraints for profile fits. We find unidentified features at 1154.93, 1168.96, 1172.53, 1180.10, 1203.32 and 1404.90~Å. The FUSE data do not confirm the ones at λ<1187Å, however. Note (3): Flag on Lines, defined as follows: d = Upper limits from apparent optical depth method of Savage & Semback (1991ApJ...379..245S). e = FUSE data used for PII upper limit column density. f = Column density from Prochaska et al. (2004, Cat. J/ApJ/617/718). g = The CIV fit is from archival STIS G230M data.
Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 8 F8.6 --- z1 Redshift of first component 10- 17 F8.6 --- z2 Redshift of second component 19- 21 I3 km/s dV Velocity separation 23- 27 F5.2 [cm-2] log(N)1 HI density column of first component 29- 32 F4.2 [cm-2] e_log(N)1 Error in logN(HI)1 34- 38 F5.2 [cm-2] log(N)2 HI density column of second component 40- 43 F4.2 [cm-2] e_log(N)2 Error in logN(HI)2 45- 49 F5.1 km/s b1 Doppler parameter of first component 51- 54 F4.1 km/s e_b1 Error in b1 56- 60 F5.1 km/s b2 Doppler parameter of second component 62- 65 F4.1 km/s e_b2 Error in b2 67- 70 A4 --- Profile Profile code (1) 72 I1 --- Mult Multiplicity flag (2)
Note (1): Profile code, defined as follows: 1 = well separated; 2 = double-minimum trough; 3 = asymmetric profile; 4 = Lyβ used. Note (2): Multiplicity flag, defined as follows: 2 = pair; 3 = triplet; 4 = quadruplet.
Byte-by-byte Description of file: table5.dat
Bytes Format Units Label Explanations
1- 2 I2 --- [WHW2006] Running number 4- 5 I2 h RAh Hour of Right Ascension (J2000) 7- 8 I2 min RAm Minute of Right Ascension (J2000) 10- 13 F4.1 s RAs Second of Right Ascension (J2000) 15 A1 --- DE- Sign of the Declination (J2000) 16- 17 I2 deg DEd Degree of Declination (J2000) 19- 20 I2 arcmin DEm Arcminute of Declination (J2000) 22- 25 F4.1 arcsec DEs Arcsecond of Declination (J2000) 27- 30 F4.1 mag rmag Apparent r band magnitude (1) 31 A1 --- u_rmag Uncertainty flag on rmag 33- 37 F5.1 mag rMAG Absolute r band magnitude (1) 38 A1 --- u_rMAG Uncertainty flag on rMAG 40- 45 F6.4 --- z Redshift (2) 46 A1 --- u_z Uncertainty flag on z 48 A1 --- n_z [AE] Absorption (A) or emission (E) line spectrum 50- 54 F5.1 arcsec AngDist Angular distance from PKS 0405-123 56- 60 F5.3 Mpc LRFDist Local rest frame distance from PKS 0405-123 62- 67 A6 --- --- [[EY94]] 69- 71 I3 --- EY ? Other name (EY PKS 0405-123 NNN in Simbad) (3) 73- 75 A3 --- f_EY Flag on EY (4)
Note (1): Errors are ∼0.1 magnitudes. Absolute magnitudes calculated using distance modulus from our adopted cosmology. Note (2): Errors are ∼100km/s in the rest frame. Note (3): Galaxies without an [EY94] number are from this work. Listings are from the NASA Extragalactic Database (NED) [EY94] = Ellingson & Yee (1994ApJS...92...33E). Note (4): Flag on Ref, defined as follows: f = Listed in both Spinrad et al. (1993AJ....106....1S) and Ellingson & Yee (1994ApJS...92...33E). Redshifts are from Spinrad et al. (1993AJ....106....1S) and are relatively less certain. Photometry is consistent between the two papers except for galaxy 177, where Δr=0.1mag. We take the Ellingson & Yee (1994ApJS...92...33E) value for consistency. The EY93 nomenclature in NED is an error. g = Blended with star. Take magnitude as lower limit for galaxy. Blended nature and galaxy type from J. Prochaska (private communication, 2005).
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 28-Dec-2006
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

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