Zobrazeno 1 - 10
of 107
pro vyhledávání: '"de Pree, C."'
Autor:
Nony, T., Galván-Madrid, R., Brouillet, N., Suárez, G., Louvet, F., De Pree, C. G., Juárez-Gama, M., Ginsburg, A., Immer, K., Lin, Y., Liu, H. B., Román-Zúñiga, C. G., Zhang, Q.
Publikováno v:
A&A 687, A84 (2024)
We aim to identify and characterize cores in the high-mass proto-cluster W49, determine their evolutionary stages and measure the associated lifetimes. We built a catalog of 129 cores extracted from an ALMA 1.3 mm continuum image at 0.26" (2900 au) a
Externí odkaz:
http://arxiv.org/abs/2404.02250
Autor:
De Pree, C. G., Wilner, D. J., Kristensen, L. E., Galván-Madrid, R., Goss, W. M., Klessen, R. S., Mac Low, M. -M., Peters, T., Robinson, A., Sloman, S., Rao, M.
We present new Jansky Very Large Array (VLA) images of the central region of the W49A star-forming region at 3.6~cm and at 7~mm at resolutions of 0\farcs15 (1650 au) and 0\farcs04 (440 au), respectively. The 3.6~cm data reveal new morphological detai
Externí odkaz:
http://arxiv.org/abs/2010.04656
Autor:
Mills, E. A. C., Ginsburg, A., Clements, A. R., Schilke, P., Sánchez-Monge, Á., Menten, K. M., Butterfield, N., Goddi, C., Schmiedeke, A., De Pree, C. G.
We report the discovery of the first 14NH3 (2,2) maser, seen in the Sgr B2 Main star forming region near the center of the Milky Way, using data from the Very Large Array radio telescope. The maser is seen in both lower resolution (3" or ~0.1 pc) dat
Externí odkaz:
http://arxiv.org/abs/1810.09567
Autor:
De Pree, C. G., Galván-Madrid, R., Goss, W. M., Klessen, R. S., Mac Low, M. -M., Peters, T., Wilner, D., Bates, J., Melo, T., Presler-Marshall, B., Webb-Forgus, R.
A number of ultracompact H II regions in Galactic star forming environments have been observed to vary significantly in radio flux density on timescales of 10-20 years. Theory predicted that such variations should occur when the accretion flow that f
Externí odkaz:
http://arxiv.org/abs/1807.10669
Autor:
De Pree, C. G., Peters, T., Mac Low, M. -M., Wilner, D. J., Goss, W. M., Galván-Madrid, R., Keto, E. R., Klessen, R. S., Monsrud, A.
We have recently published observations of significant flux density variations at 1.3 cm in HII regions in the star forming regions Sgr B2 Main and North (De Pree et al. 2014). To further study these variations, we have made new 7 mm continuum and re
Externí odkaz:
http://arxiv.org/abs/1511.05131
Autor:
De Pree, C. G., Peters, T., Mac Low, M. -M., Wilner, D. J., Goss, W. M., Galván-Madrid, R., Keto, E. R., Klessen, R. S., Monsrud, A.
Accretion flows onto massive stars must transfer mass so quickly that they are themselves gravitationally unstable, forming dense clumps and filaments. These density perturbations interact with young massive stars, emitting ionizing radiation, altern
Externí odkaz:
http://arxiv.org/abs/1312.7768
Autor:
Galván-Madrid, R., Liu, H. B., Zhang, Z. -Y., Pineda, J. E., Peng, T. -C., Zhang, Q., Keto, E. R., Ho, P. T. P., Rodríguez, L. F., Zapata, L., Peters, T., De Pree, C. G.
Publikováno v:
2013, ApJ, 779, 121
The Multi-Scale Continuum and Line Exploration of W49 (MUSCLE W49) is a comprehensive gas and dust survey of the giant molecular cloud (GMC) of W49A, the most luminous star-formation region in the Milky Way. It covers the entire GMC at different scal
Externí odkaz:
http://arxiv.org/abs/1309.4129
Autor:
Qiu, Keping, Zhang, Qizhou, Megeath, S. Thomas, Gutermuth, Robert A., Beuther, Henrik, Shepherd, Debra S., Sridharan, T. K., Testi, L., De Pree, C. G.
We present Spitzer Space Telescope IRAC and MIPS observations toward a sample of nine high-mass star forming regions at a distance of around 2 kpc. Based on IRAC and MIPS 24 $\mu$m photometric results and 2MASS JHKs data, we carry out a census of you
Externí odkaz:
http://arxiv.org/abs/0806.2488
We have detected C91$\alpha$ (8.5891 GHz) emission toward 4 ultra-compact \HII regions (\UCHII s; W49G, J, L & C) in the W49 North massive star forming region with the Very Large Array (VLA) at 3\arcsec resolution. No carbon line emission was detecte
Externí odkaz:
http://arxiv.org/abs/astro-ph/0602269
Publikováno v:
Astron.J.130:698-710,2005
We present three epochs of VLBA observations of Galactic HI absorption toward the quasar 3C~138 with resolutions of 20 mas (~ 10 AU). This analysis includes VLBA data from observations in 1999 and 2002 along with a reexamination of 1995 VLBA data. Im
Externí odkaz:
http://arxiv.org/abs/astro-ph/0505080