Zobrazeno 1 - 10
of 224
pro vyhledávání: '"Koerner D"'
Autor:
Boogert, A., Pontoppidan, K., Knez, C., Lahuis, F., Kessler-Silacci, J., van Dishoeck, E., Blake, G., Augereau, J., Bisschop, S., Bottinelli, S., Brooke, T., Brown, J., Crapsi, A., Evans II, N., Fraser, H., Geers, V., Huard, T., Jorgensen, J., Oberg, K., Allen, L., Harvey, P., Koerner, D., Mundy, L., Padgett, D., Sargent, A., Stapelfeldt, K.
Publikováno v:
Astrophys.J.678:985-1004,2008
With the goal to study the physical and chemical evolution of ices in solar-mass systems, a spectral survey is conducted of a sample of 41 low luminosity YSOs using 3-38 um Spitzer and ground-based spectra. The long-known 6.0 and 6.85 um bands are de
Externí odkaz:
http://arxiv.org/abs/0801.1167
Autor:
Rebull, L. M., Stapelfeldt, K. R., Evans II, N. J., Joergensen, J. K., Harvey, P. M., Brooke, T. Y., Bourke, T. L., Padgett, D. L., Chapman, N. L., Lai, S. -P., Spiesmann, W. J., Noreiga-Crespo, A., Merin, B., Huard, T., Allen, L. E., Blake, G. A., Jarrett, T., Koerner, D. W., Mundy, L. G., Myers, P. C., Sargent, A. I., van Dishoeck, E. F., Wahhaj, Z., Young, K. E.
Publikováno v:
Astrophys.J.Suppl.171:447-477,2007
We present observations of 10.6 square degrees of the Perseus molecular cloud at 24, 70, and 160 microns with the Spitzer Space Telescope Multiband Imaging Photometer for Spitzer (MIPS). The image mosaics show prominent, complex extended emission dom
Externí odkaz:
http://arxiv.org/abs/astro-ph/0701711
Publikováno v:
Astrophys.J.661:368-373,2007
Sub-arcsecond scale Keck images of the young A1V star, 49 Ceti, resolve emission at lambda = 12.5 and 17.9 microns from a disk with long axis at PA 125 pm 10 degrees and inclination phi = 60 pm 15 degrees . At 17.9 microns, the emission is brighter a
Externí odkaz:
http://arxiv.org/abs/astro-ph/0701352
Autor:
Padgett, D. L., Cieza, L., Stapelfeldt, K. R., Evans, N. J., Koerner, D., Sargent, A., Fukagawa, M., van Dishoek, E. F., Augereau, J., Allen, L., Blake, G., Brooke, T., Chapman, N., Harvey, P., Porras, A., Lai, S., Mundy, L., Myers, P. C., Spiesman, W., Wahhaj, Z.
Using the Spitzer Space Telescope, we have observed 90 weak-line and classical T Tauri stars in the vicinity of the Ophiuchus, Lupus, Chamaeleon, and Taurus star-forming regions as part of the Cores to Disks (c2d) Spitzer Legacy project. In addition
Externí odkaz:
http://arxiv.org/abs/astro-ph/0603370
Autor:
Young, K. E., Harvey, P. M., Brooke, T. Y., Chapman, N., Kauffmann, J., Bertoldi, F., Lai, S. -P., Alcala', J., Bourke, T. L., Spiesman, W., Allen, L. E., Blake, G. A., Evans II, N. J., Koerner, D. W., Mundy, L. G., Myers, P. C., Padgett, D. L., Salinas, A., Sargent, A. I., Stapelfeldt, K. R., Teuben, P., van Dishoeck, E. F., Wahhaj, Z.
Publikováno v:
Astrophys.J. 628 (2005) 283-297
We present maps of over 1.5 square degrees in Chamaeleon (Cha) II at 24, 70, and 160 micron observed with the Spitzer Space Telescope Multiband Imaging Photometer for Spitzer (MIPS) and a 1.2 square degree millimeter map from SIMBA on the Swedish-ESO
Externí odkaz:
http://arxiv.org/abs/astro-ph/0503670
Publikováno v:
Astrophys.J. 625 (2005) 385-397
We report our efforts to constrain the form of the low-mass star and brown dwarf mass function via Bayesian inference. Recent surveys of M, L, and T dwarfs in the local solar neighborhood are an essential component of our study. Uncertainties in the
Externí odkaz:
http://arxiv.org/abs/astro-ph/0502189
Publikováno v:
In IFAC PapersOnLine 2018 51(27):152-157
Autor:
Wahhaj, Z., Koerner, D. W., Backman, D. E., Werner, M. W., Serabyn, E., Ressler, M. E., Lis, D. C.
Publikováno v:
Astrophys.J.618:385-396,2004
We present high-dynamic-range images of circumstellar dust around HR 4796A that were obtained with MIRLIN at the Keck II telescope at lambda = 7.9, 10.3, 12.5 and 24.5 um. We also present a new continuum measurement at 350 um obtained at the Caltech
Externí odkaz:
http://arxiv.org/abs/astro-ph/0409283
Autor:
Young, C. H., Joergensen, J. K., Shirley, Y. L., Kauffmann, J., Huard, T., Lai, S. -P., Lee, C. W., Crapsi, A., Bourke, T. L., Dullemond, C. P., Brooke, T. Y., Porras, A., Spiesman, W., Allen, L. E., Blake, G. A., Evans II, N. J., Harvey, P. M., Koerner, D. W., Mundy, L. G., Myers, P. C., Padgett, D. L., Sargent, A. I., Stapelfeldt, K. R., van Dishoeck, E. F., Bertoldi, F., Chapman, N., Cieza, L., DeVries, C. H., Ridge, N. A., Wahhaj, Z.
Publikováno v:
Astrophys.J.Suppl.154:396-401,2004
We present observations of L1014, a dense core in the Cygnus region previously thought to be starless, but data from the Spitzer Space Telescope shows the presence of an embedded source. We propose a model for this source that includes a cold core, h
Externí odkaz:
http://arxiv.org/abs/astro-ph/0406371
Autor:
Boogert, A., Pontoppidan, K., Lahuis, F., Jorgensen, J., Augereau, J., Blake, G., Brooke, T., Brown, J., Dullemond, C., Evans II, N., Geers, V., Hogerheijde, M., Kessler-Silacci, J., Knez, C., Morris, P., Noriega-Crespo, A., Schoier, F., van Dishoeck, E., Allen, L., Harvey, P., Koerner, D., Mundy, L., Myers, P., Padgett, D., Sargent, A., Stapelfeldt, K.
Sensitive 5-38 um Spitzer Space Telescope (SST) and ground based 3-5 um spectra of the embedded low mass protostars B5 IRS1 and HH46 IRS show deep ice absorption bands superposed on steeply rising mid-infrared continua. The ices likely originate in t
Externí odkaz:
http://arxiv.org/abs/astro-ph/0406298