@article{bd3bb2600c024ecab8186de1ccdf076a,
title = "Optical spectra of type Ia supernovae at z = 0.46 and z = 1.2",
abstract = "We present optical spectra, obtained with the Keck 10 m telescope, of two high-redshift Type Ia supernovae (SNe Ia) discovered by the High-z Supernova Search Team: SN 1999ff at z = 0.455 and SN 1999fv at z ∼ 1.2, the highest redshift published SN Ia spectrum. Both SNe were at maximum light when the spectra were taken. We compare our high-z spectra with low-z normal and peculiar SNe Ia as well as with SNe Ic, Ib, and II. There are no significant differences between SN 1999ff and normal SNe Ia at low redshift. SN 1999fv appears to be an SN Ia and does not resemble the most peculiar nearby SNe Ia.",
keywords = "Cosmology: observations, Supernovae: general, Supernovae: individual (SN 1999ff, SN 1999fv)",
author = "Coil, {Alison L.} and Thomas Matheson and Filippenko, {Alexei V.} and Leonard, {Douglas C.} and John Tonry and Riess, {Adam G.} and Peter Challis and Alejandro Clocchiatti and Garnavich, {Peter M.} and Hogan, {Craig J.} and Saurabh Jha and Kirshner, {Robert P.} and B. Leibundgut and Phillips, {M. M.} and Schmidt, {Brian P.} and Schommer, {Robert A.} and Smith, {R. Chris} and Soderberg, {Alicia M.} and J. Spyromilio and Christopher Stubbs and Suntzeff, {Nicholas B.} and Patrick Woudt",
year = "2000",
month = dec,
day = "1",
doi = "10.1086/317311",
language = "English",
volume = "544",
pages = "L111--L114",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "American Astronomical Society",
number = "2 PART 2",
}