Zobrazeno 1 - 10
of 774
pro vyhledávání: '"Spaans, M"'
Autor:
Tang, X. D., Henkel, C., Menten, K. M., Gong, Y., Chen, C. -H. R., Li, D. L., Lee, M. -Y., Mangum, J. G., Ao, Y. P., Mühle, S., Aalto, S., García-Burillo, S., Martín, S., Viti, S., Muller, S., Costagliola, F., Asiri, H., Levshakov, S. A., Spaans, M., Ott, J., Impellizzeri, C. M. V., Fukui, Y., He, Y. X., Esimbek, J., Zhou, J. J., Zheng, X. W., Zhao, X., Li, J. S.
Publikováno v:
A&A 655, A12 (2021)
We mapped the kinetic temperature structure of two massive star-forming regions, N113 and N159W, in the Large Magellanic Cloud (LMC). We have used $\sim$1\hbox{$\,.\!\!^{\prime\prime}$}6\,($\sim$0.4\,pc) resolution measurements of the para-H$_2$CO\,$
Externí odkaz:
http://arxiv.org/abs/2108.10519
Autor:
Tang, X. D., Henkel, C., Menten, K. M., Gong, Y., Martin, S., Muhle, S., Aalto, S., Muller, S., Garcia-Burillo, S., Levshakov, S., Aladro, R., Spaans, M., Viti, S., Asiri, H. M., Ao, Y. P., Zhang, J. S., Zheng, X. W., Esimbek, J., Zhou, J. J.
Publikováno v:
A&A 629, A6 (2019)
We derive molecular-gas-phase $^{12}$C/$^{13}$C isotope ratios for the central few 100 pc of the three nearby starburst galaxies NGC 253, NGC 1068, and NGC 4945 making use of the $\lambda$ $\sim$ 3 mm $^{12}$CN and $^{13}$CN $N$ = 1--0 lines in the A
Externí odkaz:
http://arxiv.org/abs/1906.06638
Autor:
Chacón-Tanarro, A., Caselli, P., Bizzocchi, L., Pineda, J. E., Harju, J., Spaans, M., Désert, F. -X.
Publikováno v:
A&A 606, A142 (2017)
In dense and cold molecular clouds dust grains are surrounded by thick icy mantles. It is however not clear if dust growth and coagulation take place before the switch-on of a protostar. This is an important issue, as the presence of large grains may
Externí odkaz:
http://arxiv.org/abs/1707.00005
Publikováno v:
A&A 604, A58 (2017)
The temperature of interstellar dust particles is of great importance to astronomers. It plays a crucial role in the thermodynamics of interstellar clouds, because of the gas-dust collisional coupling. It is also a key parameter in astrochemical stud
Externí odkaz:
http://arxiv.org/abs/1704.02763
Autor:
Greenwood, A. J., Kamp, I., Waters, L. B. F. M., Woitke, P., Thi, W. -F., Rab, Ch., Aresu, G., Spaans, M.
Publikováno v:
A&A 601, A44 (2017)
The physical properties of brown dwarf discs, in terms of their shapes and sizes, are still largely unexplored by observations. To what extent brown dwarf discs are similar to scaled-down T Tauri discs is currently unknown, and this work is a step to
Externí odkaz:
http://arxiv.org/abs/1702.04744
Autor:
Simpson, J. M., Smail, Ian, Swinbank, A. M., Ivison, R. J., Dunlop, J. S., Geach, J. E., Almaini, O., Arumugam, V., Bremer, M. N., Chen, Chian-Chou, Conselice, C., Coppin, K. E. K., Farrah, D., Ibar, E., Hartley, W. G., Ma, C. J., Michalowski, M. J., Spaans, M., Thomson, A. P., van der Werf, P. P.
We present a multi-wavelength analysis of 52 sub-millimeter galaxies (SMGs), identified using ALMA 870$\mu$m continuum imaging in a pilot program to precisely locate bright SCUBA2-selected sub-mm sources in the UKIDSS Ultra Deep Survey (UDS) field. U
Externí odkaz:
http://arxiv.org/abs/1611.03084
Autor:
Antonellini, S., Bremer, J., Kamp, I., Riviere-Marichalar, P., Lahuis, F., Thi, W. -F., Woitke, P., Meijerink, R., Aresu, G., Spaans, M.
Publikováno v:
A&A 597, A72 (2017)
Mid-IR water lines from protoplanetary disks around T Tauri stars have a detection rate of 50\%. Models have identified multiple physical properties of disks such as dust-to-gas mass ratio, dust size power law distribution, disk gas mass, disk inner
Externí odkaz:
http://arxiv.org/abs/1610.09873
Autor:
Zavala, J. A., Aretxaga, I., Geach, J. E., Hughes, D. H., Birkinshaw, M., Chapin, E., Chapman, S., Chen, Chian-Chou, Clements, D. L., Dunlop, J. S., Farrah, D., Ivison, R. J., Jenness, T., Michałowski, M. J., Robson, E. I., Scott, Douglas, Simpson, J., Spaans, M., van der Werf, P.
We present deep observations at 450 um and 850 um in the Extended Groth Strip field taken with the SCUBA-2 camera mounted on the James Clerk Maxwell Telescope as part of the deep SCUBA-2 Cosmology Legacy Survey (S2CLS), achieving a central instrument
Externí odkaz:
http://arxiv.org/abs/1610.03551
Autor:
Drabek-Maunder, E., Mohanty, S., Greaves, J., Kamp, I., Meijerink, R., Spaans, M., Thi, W. -F., Woitke, P.
LkCa 15 is an extensively studied star in the Taurus region known for its pre-transitional disk with a large inner cavity in dust continuum and normal gas accretion rate. The most popular hypothesis to explain the LkCa 15 data invokes one or more pla
Externí odkaz:
http://arxiv.org/abs/1609.05894
Autor:
Kazandjian, M. V., Pelupessy, I., Meijerink, R., Israel, F. P., Coppola, C. M., Rosenberg, M. J. F., Spaans, M.
Far-infrared molecular emission is an important tool used to understand the excitation mechanisms of the gas in the inter-stellar medium of star-forming galaxies. In the present work, we model the emission from rotational transitions with critical de
Externí odkaz:
http://arxiv.org/abs/1609.02567