Zobrazeno 1 - 10
of 1 178
pro vyhledávání: '"Chaffee, F."'
Autor:
Pustilnik, S. A., Engels, D., Lipovetsky, V. A., Kniazev, A. Y., Pramskij, A. G., Ugryumov, A. V., Masegosa, J., Izotov, Y. I., Chaffee, F., Marquez, I., Teplyakova, A. L., Hopp, U., Brosch, N., Hagen, H. -J., Martin, J. -M.
We present the sixth list with results of the Hamburg/SAO Survey for Emission-Line Galaxies. The final list resulted from follow-up spectroscopy conducted with the 4.5m MMT telescope in 1996, and with 2.2m CAHA and 6m SAO telescopes in 2000 to 2003.
Externí odkaz:
http://arxiv.org/abs/astro-ph/0507082
Autor:
Dey, A., Bian, C., Soifer, B. T., Brand, K., Brown, M. J. I., Chaffee, F. H., LeFloc'h, E., Hill, G., Houck, J. R., Jannuzi, B. T., Rieke, M., Weedman, D., Brodwin, M., Eisenhardt, P.
Publikováno v:
Astrophys.J. 629 (2005) 654-666
We report the discovery of a very large, spatially extended Ly alpha -emitting nebula at z=2.656 associated with a luminous mid-infrared source. The bright mid-infrared source (F(24um)=0.86 mJy) was first detected in observations made using the Spitz
Externí odkaz:
http://arxiv.org/abs/astro-ph/0503632
Autor:
Blake, C. H., Bloom, J. S., Starr, D. L., Falco, E. E., Skrutskie, M., Fenimore, E. E., Duchene, G., Szentgyorgyi, A., Hornstein, S., Prochaska, J. X., McCabe, C., Ghez, A., Konopacky, Q., Stapelfeldt, K., Hurley, K., Campbell, R., Kassis, M., Chaffee, F., Gehrels, N., Barthelmy, S., Cummings, J. R., Hullinger, D., Krimm, H. A., Markwardt, C. B., Palmer, D., Parsons, A., McLean, K., Tueller, J.
Publikováno v:
Nature 435:181-184,2005
The explosion that results in a cosmic gamma-ray burst (GRB) is thought to produce emission from two physical processes -- the activity of the central engine gives rise to the high-energy emission of the burst through internal shocking and the subseq
Externí odkaz:
http://arxiv.org/abs/astro-ph/0503508
Autor:
Brunner, Robert J., Hall, Patrick B., Djorgovski, S. George, Gal, R. R., Mahabal, A. A., Lopes, P. A. A., de Carvalho, R. R., Odewahn, S. C., Castro, S., Thompson, D., Chaffee, F., Darling, J., Desai, V.
Publikováno v:
Astron.J. 126 (2003) 53
With the recent release of large (i.e., > hundred million objects), well-calibrated photometric surveys, such as DPOSS, 2MASS, and SDSS, spectroscopic identification of important targets is no longer a simple issue. In order to enhance the returns fr
Externí odkaz:
http://arxiv.org/abs/astro-ph/0304166
Autor:
Djorgovski, S. G., Kulkarni, S. R., Frail, D. A., Harrison, F. A., Bloom, J. S., Berger, E., Price, P. A., Fox, D., Soderberg, A. M., Sari, R., Yost, S., Mahabal, A. A., Castro, S. M., Goodrich, R., Chaffee, F.
Studies of the cosmic gamma-ray bursts (GRBs) and their host galaxies are starting to provide interesting or even unique new insights in observational cosmology. GRBs represent a new way of identifying a population of star-forming galaxies at cosmolo
Externí odkaz:
http://arxiv.org/abs/astro-ph/0302004
Autor:
Djorgovski, S. G., Kulkarni, S. R., Frail, D. A., Harrison, F. A., Bloom, J. S., Berger, E., Price, P. A., Fox, D., Soderberg, A. M., Galama, T. J., Reichart, D. E., Sari, R., Yost, S., Mahabal, A. A., Castro, S. M., Goodrich, R., Chaffee, F.
Studies of the cosmic gamma-ray bursts (GRBs) and their host galaxies are now starting to provide interesting or even unique new insights in observational cosmology. Observed GRB host galaxies have a median magnitude R ~ 25 mag, and show a range of l
Externí odkaz:
http://arxiv.org/abs/astro-ph/0301342
Autor:
Dietrich, M., Hamann, F., Shields, J. C., Constantin, A., Vestergaard, M., Chaffee, F., Foltz, C. B., Junkkarinen, V. T.
Publikováno v:
Astrophys.J. 581 (2002) 912-924
We report on the analysis of a large sample of 744 type 1 Active Galactic Nuclei, including quasars and Seyfert 1 galaxies across the redshift range from 0 < z < 5 and spanning nearly 6 orders of magnitude in continuum luminosity. We discuss correlat
Externí odkaz:
http://arxiv.org/abs/astro-ph/0208348
Publikováno v:
Astrophys.J.574:623-633,2002
We present spectroscopic observations with Keck/LRIS of LBQS 0015+0239, a pair of quasars at z = 2.45 with a separation of $\Delta\theta = 2.2$ arcsec (projected linear distance of 17.8 $h_{70}^{-1}$ kpc, for $\Omega_m = 0.3$, $\Lambda = 0.7$). Lensi
Externí odkaz:
http://arxiv.org/abs/astro-ph/0204084
Autor:
Izotov, Y., Chaffee, F., Foltz, C., Fricke, K., Green, R., Guseva, N., Noeske, K., Papaderos, P., Thuan, T.
The results of the N/O abundance determination in a sample of low-metallicity blue compact dwarf (BCD) galaxies based on new spectroscopic observations with large telescopes (Keck, VLT, MMT, 4m KPNO) are presented. We show that the N/O abundance rati
Externí odkaz:
http://arxiv.org/abs/astro-ph/0109519
Autor:
Goodrich, R. W., Campbell, R., Chaffee, F., Hill, G. M., Sprayberry, D., Brandt, W. N., Schneider, D. P., Kaspi, S., Fan, X., Gunn, J. E., Strauss, M. A.
We use the NIRSPEC near-IR spectrometer on Keck II to obtain moderate resolution (R = 1540) spectroscopy that shows conclusively that the C IV emission line in the z = 5.74 quasar SDSSp J104433.04-012502.2 is accompanied by broad, blueshifted C IV ab
Externí odkaz:
http://arxiv.org/abs/astro-ph/0109464