Zobrazeno 1 - 10
of 94
pro vyhledávání: '"Adelberger, K."'
We have detected Lyman-alpha emission from a damped Lyman-alpha system (DLA) that lies near the bright quasar HS1549+1919. The DLA has the same redshift as HS1549+1919 and was discovered in the spectrum of a faint QSO that lies 49" away (380 proper k
Externí odkaz:
http://arxiv.org/abs/astro-ph/0509229
Autor:
Adelberger, K. L., Steidel, C. C.
Publikováno v:
Astrophys.J. 627 (2005) L1-L4
We use the clustering of galaxies around distant active-galactic nuclei to derive an estimate of the relationship between galaxy and black hole mass that obtained during the ancient quasar epoch, at redshifts 2 <~ z <~ 3, when giant black holes accre
Externí odkaz:
http://arxiv.org/abs/astro-ph/0505546
Autor:
Adelberger, K. L., Steidel, C. C.
Publikováno v:
Astrophys.J. 630 (2005) 50-58
We use the clustering of galaxies around distant AGN to show with ~90% confidence that fainter AGN are longer lived. Our argument is simple: since the measured galaxy-AGN cross-correlation length r_0 ~ 5h^-1 Mpc does not vary significantly over a 10
Externí odkaz:
http://arxiv.org/abs/astro-ph/0505210
Publikováno v:
Astrophys.J.629:636-653,2005
Absorption-line spectroscopy of 23 background QSOs and numerous background galaxies has let us measure the spatial distribution of metals and neutral hydrogen around 1044 UV-selected galaxies at redshifts 1.8
Externí odkaz:
http://arxiv.org/abs/astro-ph/0505122
Autor:
Stanek, K. Z., Garnavich, P. M., Nutzman, P. A., Hartman, J. D., Garg, A., Adelberger, K., Berlind, P., Bonanos, A. Z., Calkins, M. L., Challis, P., Gaudi, B. S., Holman, M. J., Kirshner, R. P., McLeod, B. A., Osip, D., Reiprich, T. Pimenova T. H., Romanishin, W., Spahr, T., Tegler, S. C., Zhao, X.
Publikováno v:
Astrophys.J. 626 (2005) L5-L10
We present deep optical photometry of the afterglow of gamma-ray burst (GRB) 041006 and its associated hypernova obtained over 65 days after detection (55 R-band epochs on 10 different nights). Our early data (t<4 days) joined with published GCN data
Externí odkaz:
http://arxiv.org/abs/astro-ph/0502319
Publikováno v:
Mon.Not.Roy.Astron.Soc.359:47-56,2005
We present an analysis of the X-ray emission from a large sample of ultraviolet (UV) selected, star forming galaxies with 0.74
Externí odkaz:
http://arxiv.org/abs/astro-ph/0501411
Publikováno v:
Astrophys.J. 619 (2005) 697-713
We analyzed the spatial distribution of 28500 photometrically selected galaxies with AB magnitude 23.5
Externí odkaz:
http://arxiv.org/abs/astro-ph/0410165
Autor:
Nandra, K., Laird, E. S., Adelberger, K., Gardner, J. P., Mushotzky, R. F., Rhodes, J., Steidel, C. C., Teplitz, H. I., Arnaud, K. A.
Publikováno v:
Mon.Not.Roy.Astron.Soc. 356 (2005) 568-586
We present the results of a 200 ks Chandra observation of part of the Groth Strip region, using the ACIS-I instrument. We present a relatively simple method for the detection of point-sources and calculation of limiting sensitivities, which we argue
Externí odkaz:
http://arxiv.org/abs/astro-ph/0410149
Autor:
Barmby, P., Huang, J. -S., Fazio, G. G, Surace, J. A., Arendt, R. G., Hora, J. L., Pahre, M. A., Adelberger, K. L., Eisenhardt, P., Erb, D. K., Pettini, M., Reach, W. T., Reddy, N. A., Shapley, A. E., Steidel, C. C., Stern, D., Wang, Z., Willner, S. P.
Publikováno v:
Astrophys.J.Suppl.154:97-102,2004
As part of the In-Orbit Checkout activities for the Spitzer Space Telescope, the IRAC team carried out a deep observation (average integration time ~8 hours) of a field surrounding the bright QSO HS 1700+6416. This field contains several hundred z~3
Externí odkaz:
http://arxiv.org/abs/astro-ph/0405624
Publikováno v:
Astrophys.J.612:108-121,2004
We present results of near-IR spectroscopic measurements of 7 star-forming galaxies at 2.1
Externí odkaz:
http://arxiv.org/abs/astro-ph/0405187