Zobrazeno 1 - 10
of 2 370
pro vyhledávání: '"Friedman, S D"'
Autor:
Friedman, S. D., Chayer, P., Jenkins, E. B., Tripp, T. M., Williger, G. M., Hebrard, G., Sonnentrucker, P.
We present high S/N measurements of the H I Ly alpha absorption line toward 16 Galactic targets which are at distances between approximately 190 and 2200 pc, all beyond the wall of the Local Bubble. We describe the models used to remove stellar emiss
Externí odkaz:
http://arxiv.org/abs/2301.13226
We provide a model where u(\kappa) < 2^{\kappa} for a supercompact cardinal \kappa. Garti and Shelah have provided a sketch of how to obtain such a model by modifying the construction in a paper of Dzamonja and Shelah; we provide here a complete proo
Externí odkaz:
http://arxiv.org/abs/1511.02687
Autor:
Hobbs, L. M., York, D. G., Thorburn, J. A., Snow, T. P., Bishof, M., Friedman, S. D., McCall, B. J., Oka, T., Rachford, B., Sonnentrucker, P., Welty, D. E.
Echelle spectra of HD 183143 [B7Iae, E(B-V) = 1.27] were obtained on three nights, at a resolving power R = 38,000 and with a signal-to-noise ratio ~1000 at 6400 A in the final, combined spectrum. A catalog is presented of 414 diffuse interstellar ba
Externí odkaz:
http://arxiv.org/abs/0910.2983
Autor:
Hobbs, L. M., York, D. G., Snow, T. P., Oka, T., Thorburn, J. A., Bishof, M., Friedman, S. D., McCall, B. J., Rachford, B., Sonnentrucker, P., Welty, D. E.
Publikováno v:
Astrophys.J.680:1256-1270,2008
Echelle spectra of the double-lined spectroscopic binary HD 204827 were obtained on five nights, at a resolving power R = 38,000 and with a S/N ratio = 750 near 6000 A in the final, combined spectrum. The stars show E(B-V) = 1.11 and spectral types n
Externí odkaz:
http://arxiv.org/abs/0804.2094
The Inner Model Hypothesis (IMH) and the Strong Inner Model Hypothesis (SIMH) were introduced by the first author in ``Internal consistency and the inner model hypothesis'', Bulletin of Symbolic Logic, December 2006. In this article we establish some
Externí odkaz:
http://arxiv.org/abs/0711.0680
Autor:
Bowen, D. V., Jenkins, E. B., Tripp, T. M., Sembach, K. R., Savage, B. D., Moos, H. W., Oegerle, W. R., Friedman, S. D., Gry, C., Kruk, J. W., Murphy, E., Sankrit, R., Shull, J. M., Sonneborn, G., York, D. G.
Publikováno v:
Astrophys.J.Suppl.176:59-163,2008
To probe the distribution and physical characteristics of interstellar gas at temperatures T ~ 3e5 K in the disk of the Milky Way, we have used the Far Ultraviolet Spectroscopic Explorer (FUSE) to observe absorption lines of OVI toward 148 early-type
Externí odkaz:
http://arxiv.org/abs/0711.0005
Publikováno v:
Astrophys.J.650:L115-L118,2006
Cl I is the atomic species most directly coupled to molecular hydrogen due to its chemistry. Its weakest lines are thereby probably the best tracer of optically thick H2 components in diffuse clouds. We report on the empirical determination of the os
Externí odkaz:
http://arxiv.org/abs/astro-ph/0609132
Publikováno v:
Astrophys.J.638:847-859,2006
We present measurements of the column densities of interstellar DI, OI, NI, and H2 made with FUSE, and of HI made with IUE toward the sdO star LSE 44, at a distance of 554+/-66 pc. This target is among the seven most distant Galactic sight lines for
Externí odkaz:
http://arxiv.org/abs/astro-ph/0510593
Autor:
Hebrard, G., Tripp, T. M., Chayer, P., Friedman, S. D., Dupuis, J., Sonnentrucker, P., Williger, G. M., Moos, H. W.
Publikováno v:
Astrophys.J.635:1136-1150,2005
We present a study of the deuterium abundance along the extended sight line (2.7kpc) toward HD 90087 with FUSE. Both in terms of distance and column densities, HD 90087 has the longest and densest sight line observed in the Galactic disk for which a
Externí odkaz:
http://arxiv.org/abs/astro-ph/0508611
Autor:
Zheng, W., Kriss, G. A., Deharveng, J. -M., Dixon, W. V., Kruk, J. W., Shull, J. M., Giroux, M. L., Morton, D. C., Williger, G. M., Friedman, S. D., Moos, H. W.
Publikováno v:
Astrophys.J. 605 (2004) 631-644
We obtained high-resolution VLT and FUSE spectra of the quasar HE2347-4342 to study the properties of the intergalactic medium between redshifts z=2.0-2.9. The high-quality optical spectrum allows us to identify approximately 850 HeII absorption comp
Externí odkaz:
http://arxiv.org/abs/astro-ph/0312557