Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Pina, Robert K."'
Our mid-infrared and near-infrared surveys over the last five years have helped to strengthen and clarify the relationships between water, methanol, and OH masers and the star formation process. Our surveys show that maser emission seems to be more c
Externí odkaz:
http://arxiv.org/abs/astro-ph/0506156
Publikováno v:
Astrophys.J.598:1127-1139,2003
We present here mid-infrared images of seven sites of water maser emission thought to be associated with the hot molecular core (HMC) phase of massive star formation. Observations were obtained at the NASA InfraRed Telescope Facility 3-m, the Gemini
Externí odkaz:
http://arxiv.org/abs/astro-ph/0307155
Autor:
Radomski, James T., Pina, Robert K., Packham, Christopher, Telesco, Charles M., De Buizer, James M., Fisher, R. Scott, Robinson, A.
Publikováno v:
Astrophys.J. 587 (2003) 117-122
We present subarcsecond resolution mid infrared images of NGC 4151 at 10.8 micron and 18.2 micron. These images were taken with the University of Florida mid-IR camera/spectrometer OSCIR at the Gemini North 8-m telescope. We resolve emission at both
Externí odkaz:
http://arxiv.org/abs/astro-ph/0212307
Publikováno v:
Astrophys.J.580:305-316,2002
We present high-resolution (<0.5") mid-infrared Keck II images of individual sources in the central region of NGC 6334 I. We compare these images to images at a variety of other wavelengths from the near infrared to cm radio continuum and speculate o
Externí odkaz:
http://arxiv.org/abs/astro-ph/0207565
Autor:
Radomski, James T., Pina, Robert K., Packham, Christopher, Telesco, Charles M., Tadhunter, Clive N.
We present subarcsecond resolution mid-infrared images at 10.8 and 18.2 microns of Cygnus A. These images were obtained with the University of Florida mid-IR camera/spectrometer OSCIR at the Keck II 10-m telescope. Our data show extended mid-IR emiss
Externí odkaz:
http://arxiv.org/abs/astro-ph/0110347
Autor:
De Buizer, James M., Walsh, Andrew J., Pina, Robert K., Phillips, Chris J., Telesco, Charles M.
G339.88-1.26 is considered to be a good candidate for a massive star with a circumstellar disk. This has been supported by the observations of linearly distributed methanol maser spots believed to delineate this disk, and mid-infrared observations th
Externí odkaz:
http://arxiv.org/abs/astro-ph/0109095
Autor:
Jayawardhana, Ray, Fisher, R. Scott, Telesco, Charles M., Pina, Robert K., Navascues, David Barrado y, Hartmann, Lee W., Fazio, Giovanni G.
Publikováno v:
Astron.J. 122 (2001) 2047-2054
We have conducted deep mid-infrared imaging of a relatively nearby sample of candidate Vega-like stars using the OSCIR instrument on the CTIO 4-meter and Keck II 10-meter telescopes. Our discovery of a spatially-resolved disk around HR 4796A has alre
Externí odkaz:
http://arxiv.org/abs/astro-ph/0105314
Autor:
Haisch Jr., Karl E., Lada, Elizabeth A., Pina, Robert K., Telesco, Charles M., Lada, Charles J.
We present the results of the first broadband 10.8 um survey of the NGC 2024 cluster. The mid-infrared data were combined with our previously published JHKL photometry in order to construct spectral energy distributions for all detected sources. The
Externí odkaz:
http://arxiv.org/abs/astro-ph/0012482
Autor:
Jayawardhana, Ray, Hartmann, Lee, Fazio, Giovanni, Fisher, R. Scott, Telesco, Charles M., Pina, Robert K.
A group of young, active stars in the vicinity of TW Hydrae has recently been identified as a possible physical association with a common origin. Given its proximity ($\sim$50 pc), age ($\sim$10 Myr) and abundance of binary systems, the TW Hya Associ
Externí odkaz:
http://arxiv.org/abs/astro-ph/9906316
Mid-infrared imaging of the young binary star Hen 3-600: Evidence for a dust disk around the primary
Autor:
Jayawardhana, Ray, Hartmann, Lee, Fazio, Giovanni, Fisher, R. Scott, Telesco, Charles M., Pina, Robert K.
We present high-resolution mid-infrared observations of the nearby late-type young binary system Hen 3-600. The binary, at a distance of $\sim$ 50 pc, could be a member of the TW Hydrae Association, the nearest known group of young stars, with an age
Externí odkaz:
http://arxiv.org/abs/astro-ph/9905173