Pierre Chayer

Orbital Parameters and Chemical Composition of Four White Dwarfs in Post-Common Envelope Binaries (2007)

Kawka, Adela, Vennes, Stephane, Dupuis, Jean, Chayer, Pierre, Lanz, Thierry

We present FUSE observations of the hot white dwarfs in the post-common envelope binaries Feige 24, EUVE J0720-317, BPM 6502, and EUVE J2013+400. The spectra show numerous photospheric absorption...

Evidence for deuterium astration in the planetary nebula Sh2-216? (2007)

Oliveira, Cristina M, Chayer, Pierre, Moos, H. Warren, Kruk, Jeffrey W., Rauch, Thomas

We present FUSE observations of the line of sight to WD0439+466 (LS V +46 21), the central star of the old planetary nebula Sh2-216. The FUSE data shows absorption by many interstellar and stellar...

Iron in Hot DA White Dwarfs (2006)

Vennes, Stephane, Chayer, Pierre, Dupuis, Jean, Lanz, Thierry

We present a study of the iron abundance pattern in hot hydrogen-rich (DA) white dwarfs. The study is based on new and archival far ultraviolet spectroscopy of a sample of white dwarfs in the...

Variations in D/H and D/O from New FUSE Observations (2006)

Oliveira, C. M., Moos, H. Warren, Chayer, Pierre, Kruk, Jeffrey W.

We use data obtained with the Far Ultraviolet Spectroscopic Explorer (FUSE) to determine the interstellar abundances of DI, NI, OI, FeII, and H2 along the sigh tlines to WD1034+001, BD+393226, and...

O/H in the Local Bubble (2005)

Oliveira, Cristina, Dupuis, Jean, Chayer, Pierre, Moos, H. Warren

We present new measurements of the oxygen gas-phase abundance along four sightlines probing gas inside the Local Bubble, using data obtained with the Far Ultraviolet Spectroscopic Explorer (FUSE) and...

Interstellar Deuterium, Nitrogen, and Oxygen Abundances Toward GD 246, WD 2331$-$475, HZ 21, and Lan 23: Results from the FUSE Mission (2002)

Oliveira, Cristina M., Hebrard, Guillaume, Howk, J. Christopher, Kruk, Jeffrey W., Chayer, Pierre, Moos, H. Warren

The interstellar abundances of D I, N I, and O I in the local ISM are studied us ing high-resolution spectra of four hot white dwarfs. The spectra of GD 246, WD 2331$-$475, HZ 21, and Lan 23 were...

Far Ultraviolet Spectroscopic Explorer Observations of the Supernova Remnant N49 in the Large Magellanic Cloud (2000)

Blair, William P., Sankrit, Ravi, Shelton, Robin, Sembach, Kenneth R., Moos, H. Warren, Raymond, John C., ...

We report a Far Ultraviolet Spectroscopic Explorer satellite observation of the supernova remnant N49 in the Large Magellanic Cloud, covering the 905 -- 1187 A spectral region. A 30'' square aperture...