Alan Tokunaga

Details der Publikationsliste

Zeitraum

1986 - 2009

Anzahl

11

Co-Autoren

Photometric Calibrations for 21st Century Science (2009)

Kent, Stephen, Kaiser, Mary Elizabeth, Deustua, Susana E., Smith, J. Allyn, Adelman, Saul, Allam, Sahar, ...

The answers to fundamental science questions in astrophysics, ranging from the history of the expansion of the universe to the sizes of nearby stars, hinge on our ability to make precise measurements...

An Adaptive Optics Survey for Close Protostellar Binaries (2009)

Connelley, Michael, Reipurth, Bo, Tokunaga, Alan

In order to test the hypothesis that Class I protostellar binary stars are a product of ejections during the dynamical decay of non-hierarchical multiple systems, we combined the results of new...

The Evolution of the Multiplicity of Embedded Protostars I: Sample Properties and Binary Detections (2008)

Connelley, Michael, Reipurth, Bo, Tokunaga, Alan

We present the observational results of a near-infrared survey of a large sample of Class I protostars designed to determine the Class I binary separation distribution from ~100 AU to ~5000 AU. We...

The Evolution of the Multiplicity of Embedded Protostars II: Binary Separation Distribution & Analysis (2008)

Connelley, Michael, Reipurth, Bo, Tokunaga, Alan

We present the Class I protostellar binary separation distribution based on the data tabulated in the companion paper. We verify the excess of Class I binary stars over solar-type main-sequence...

, Hiroshi Terada c, Miwa Goto c (2007)

Alan Tokunaga, Mark Weber, Robert Potter, Peter Onaka, Gregory Ching

, Tony Young b, Kent Fletcher b, Douglas Neil b, Louis Robertson b Daniel Cook b

First Detection of NaI D lines in High-Redshift Damped Lyman-alpha Systems (2006)

Kondo, Sohei, Kobayashi, Naoto, Minowa, Yosuke, Tsujimoto, Takuji, Churchill, Christopher W., Takato, Naruhisa, ...

A Near-infrared (1.18-1.35 micron) high-resolution spectrum of the gravitationally-lensed QSO APM 08279+5255 was obtained with the IRCS mounted on the Subaru Telescope using the AO system. We...

First detection of Na I D lines in high-redshift damped Lya Systems (2006)

Kondo, Sohei, Kobayashi, Naoto, Minowa, Yosuke, Tsujimoto, Takuji, Churchill, Christopher W., Takato, Naruhisa, ...

An NIR (1.18-1.35 mum) high-resolution spectrum of the gravitationally lensed QSO APM 08279+5255 was obtained with the Subaru Telescope IRCS using the AO system. We have detected strong Na I D...

MgII Absorption Lines in z=2.974 Damped Lyman-alpha System toward Gravitationally Lensed QSO APM 08279+5255: Detection of Small-scale Structure in MgII Absorbing Clouds (2002)

Kobayashi, Naoto, Terada, Hiroshi, Goto, Miwa, Tokunaga, Alan

1.02-1.16 micron spectra (R ~ 7,000) of the gravitationally lensed QSO APM 08279+5255 at z_em=3.911 were obtained during the commissioning run of IRCS, the 1-5 micron near-infrared camera and...

0.8-13 Micron Spectroscopy of V838 Monocerotis and a Model for Its Emission (1998)

Lynch, David K., Venturini, Catherine C., Dimpfl, W., Bernstein, Lawrence S., Sitko, Michael L., Fajardo-Acosta, Sergio, ...

We report on the results of a number of infrared spectra (0.8-2.5, 2.1-4.6, and 3-14 microns) of V838 Monocerotis, taken from a short time after discovery in 2002 January to about 14 months later, in...

Kinematic Diagnostics of Disks Around Young Stars: CO Overtone Emission from WL16 and 1548C27 (1995)

Najita, Joan, Carr, John, Glassgold, Al, Shu, Frank, Tokunaga, Alan

We report high spectral resolution observations of the CO vibrational overtone emission from the young stellar object 1548C27; our observations include both the CO(2-0) and CO(5-3) bandhead regions....

Enhanced acetylene emission near the north pole of jupiter (1986)

Drossart, Pierre, Bezard, Bruno, Atreya, Sushil K., Lacy, John, Serabyn, Eugene, Tokunaga, Alan, ...

We report observations of acetylene emission lines near 13.3 [mu]m on Jupiter recorded at the NASA Infrared Telescope Facility in July 1984. A strong enhancement in the intensity of R10 line of the...