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J/ApJ/561/106       Gravitational lensing of SN 1997ff       (Mortsell+, 2001)

Gravitational lensing of the farthest known supernova SN 1997ff. Mortsell E., Gunnarsson C., Goobar A. <Astrophys. J. 561, 106 (2001)> =2001ApJ...561..106M
ADC_Keywords: Supernovae ; Gravitational lensing ; Redshifts Keywords: galaxies: high-redshift - gravitational lensing - supernovae: individual (SN 1997ff) Abstract: We investigate the effects of gravitational lensing due to intervening galaxies on the recently discovered Type Ia supernova at z∼1.7, SN 1997ff, in the Hubble Deep Field North. We find that it is possible to obtain a wide range of magnifications by varying the mass and/or the velocity dispersion normalization of the lensing galaxies. In order to be able to use SN 1997ff to constrain the redshift-distance relation, very detailed modeling of the galaxies to control the systematic effects from lensing is necessary. Thus, we argue that, based on our current limited knowledge of the lensing galaxies, it is difficult to use SN 1997ff to constrain the values of ΩM and Ω_Λ, or even to place severe limits on gray dust obscuration or luminosity evolution of Type Ia supernovae. Objects: ---------------------------------------------- RA (2000) DE Designation(s) ---------------------------------------------- 12 36 44.1 +62 12 44 SN 1997ff = SN 1997ff ---------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 45 11 Data for galaxies in the HDF-N, closer than 10" to the line of sight to SN 1997ff hdfnpz.dat 94 1021 Photometric redshifts in the HDF North hdfspz.dat 94 897 Photometric redshifts in the HDF South refs.dat 66 9 References
Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 3 I3 --- Gwyn Galaxy (Gwyn HDFN NNN in Simbad) number 5- 9 F5.3 --- z Redshift 10 A1 --- n_z [a] a: Photometric redshift used because spectroscopic redshift is not available 13- 20 E8.3 --- m/m*(rST) Mass relative to the rST band mass value 23- 30 E8.3 --- m/m*(iST) Mass relative to the iST band mass value 33- 37 F5.3 --- v/v*(rST) Velocity dispersion relative to the rST band velocity dispersion value 41- 45 F5.3 --- v/v*(iST) Velocity dispersion relative to the iST band velocity dispersion value
Byte-by-byte Description of file: hdfnpz.dat hdfspz.dat
Bytes Format Units Label Explanations
2- 5 A4 --- Seq Sequential number (1) 8- 9 I2 h RAh Right ascension (J2000) 11- 12 I2 min RAm Right ascension (J2000) 14- 18 F5.2 s RAs Right ascension (J2000) 20 A1 --- DE- Declination sign (J2000) 21- 22 I2 deg DEd Declination (J2000) 24- 25 I2 arcmin DEm Declination (J2000) 27- 31 F5.2 arcsec DEs Declination (J2000) 33- 39 F7.2 pix Xpos X position 41- 47 F7.2 pix Ypos Y position 49- 54 F6.3 mag Umag UST magnitude (F300W) 56- 61 F6.3 mag Bmag BST magnitude (F450W) 63- 68 F6.3 mag Rmag RST magnitude (F606W) 70- 75 F6.3 mag Imag IST magnitude (F814W) 77- 81 F5.3 --- zph Photometric redshift 83- 88 F6.4 --- z Spectroscopic redshift 90- 94 A5 --- Ref Reference, in refs.dat file
Note (1): No. 1 to 1015, s1 to s6 in the HDF-North No. 1 to 886, s1 to s11 in the HDF-South
Byte-by-byte Description of file: refs.dat
Bytes Format Units Label Explanations
1- 2 I2 --- Ref Reference number 4- 22 A19 --- BIbCode BibCode 24- 44 A21 --- Aut Author's name 47- 66 A20 --- Com Comments
History: Copied at
(End) James Marcout, Patricia Bauer [CDS] 14-Jan-2002
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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