Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Jeffrey D. Goldader"'
Autor:
Seulah Choi, Jeffrey D. Goldader
Publikováno v:
The Physics Teacher. 48:594-597
Finding ways to demonstrate—in a high school classroom—that subatomic particles from space produce other particles capable of reaching the Earth's surface is not a trivial task. In this paper, we describe a Geiger‐Muller tube‐based cosmic ray
Autor:
Jeffrey D. Goldader
Publikováno v:
The Physics Teacher. 46:206-209
The Celsius and Kelvin temperature scales, we tell our students, are related. We explain that a change in temperature of 1°C corresponds to a change of 1 Kelvin and that atoms and molecules have zero kinetic energy at zero Kelvin, −273°C. In this
Autor:
Charles Alcock, Jeffrey D. Goldader
Publikováno v:
Publications of the Astronomical Society of the Pacific. 115:1330-1339
We present a simple method for constraining the possible future positions of distant solar system objects observed twice over only a very short time span. The method involves taking two positions and then determining a large number of possible orbits
Autor:
Jeffrey D. Goldader, Charles Alcock, Kem H. Cook, Tim Axelrod, S. L. Marshall, Rachel Moody, Brian P. Schmidt
Publikováno v:
Earth, Moon, and Planets. 92:125-130
We present preliminary results of the analysis of the first 500 square degrees of the Southern Edgeworth-Kuiper belt Survey, a large sky survey which ran from January 2000 to January 2003 and comprises 2900° in total. Early tests predict that we sho
Autor:
R. Porrata, J. Giammarco, John Rice, C.-Y. Wen, Yong-Ik Byun, Wen Ping Chen, Matthew J. Lehner, S. K. King, A. Wang, Jack J. Lissauer, Jeffrey D. Goldader, K. H. Cook, Shiang-Yu Wang, Rahul Dave, I. de Pater, Charles Alcock, S. L. Marshall, Typhoon Lee
Publikováno v:
Earth, Moon, and Planets. 92:459-464
The Taiwanese—American Occultation Survey (TAOS) seeks to determine the number and size spectrum for small (~ 3 km) bodies in the Kuiper Belt. This will be accomplished by searching for the brief occultations of bright stars (R ~ 14) by these objec
Autor:
Gerhardt R. Meurer, David B. Sanders, Charles C. Steidel, Mark Seibert, Timothy M. Heckman, Daniela Calzetti, Jeffrey D. Goldader
Publikováno v:
The Astrophysical Journal. 568:651-678
In an effort to better understand the UV properties of ultraluminous infrared galaxies (ULIGs), and compare them to the rest-frame UV properties of high redshift sub-mm and Lyman-break galaxies, we have obtained far- and near-UV imaging observations
Autor:
Jeffrey D. Goldader, Gerhardt R. Meurer, Charles C. Steidel, Daniela Calzetti, David B. Sanders, Timothy M. Heckman, Mark Seibert
Publikováno v:
Highlights of Astronomy. 12:489-492
Many recent estimates of the star formation rate density at high redshift rely on rest-frame ultraviolet (UV) data. These are highly sensitive to dust absorption. Applying a correlation between the far-infrared (FIR) to UV flux ratio and UV color fou
Autor:
Nelson Caldwell, Jeffrey D. Goldader, Zhong Wang, George H. Jacoby, Sheila J. Kannappan, Jason Spyromilio, Maryam Modjaz, Michael L. Calkins, Robert P. Kirshner, Michael A. Pahre, Krzysztof Z. Stanek, R. R. Treffers, Alicia M. Soderberg, Pauline Barmby, Eva K. Grebel, Alexei V. Filippenko, Warren R. Brown, Joseph Zajac, Saurabh Jha, Carl Hergenrother, Weidong Li, Perry Berlind, John P. Huchra, Bruno Leibundgut, Petri Vaisanen, Laurence A. Marschall, Adam G. Riess, Robert P. Stefanik, Peter R. Wood, Lucas M. Macri, Elizabeth J. Barton, Peter M. Garnavich, Brian P. Schmidt, William D. Vacca, Daniel M. Koranyi, Akbar H. Rizvi, Michael A. Beasley, Kenneth J. Rines, Peter Challis, Priscilla J. Benson, Patrick Seitzer, Andrew Szentgyorgyi
Publikováno v:
The Astrophysical Journal Supplement Series. 125:73-97
We present optical and near-infrared photometry and spectroscopy of the type Ia SN 1998bu in the Leo I Group galaxy M96 (NGC 3368). The data set consists of 356 photometric measurements and 29 spectra of SN 1998bu between UT 1998 May 11 and July 15.
Publikováno v:
The Astrophysical Journal Supplement Series. 108:449-470
Spectra across the infrared K band are presented for a flux-limited sample of powerful, bright, "infrared" galaxies. The sample in the present paper, consisting of 43 systems (47 individual galaxies) with infrared luminosities LIR in the range 11.2 l
Publikováno v:
The Astrophysical Journal. 474:104-120
We have obtained spectra across the K window for the first large sample of luminous galaxies selected from the IRAS survey. This paper contains the principal analysis of the 43 systems in our sample with luminosities of 11.2 log (LIR/L?) 11.9. The sp