Zobrazeno 1 - 10
of 447
pro vyhledávání: '"Dunham, M."'
Autor:
Kirk, H., Dunham, M. M., Francesco, J. Di, Johnstone, D., Offner, S. S. R., Sadavoy, S. I., Tobin, J. J., Arce, H. G., Bourke, T. L., Mairs, S., Myers, P. C., Pineda, J. E., Schnee, S., Shirley, Y. L.
Compact substructure is expected to arise in a starless core as mass becomes concentrated in the central region likely to form a protostar. Additionally, multiple peaks may form if fragmentation occurs. We present Atacama Large Millimeter/submillimet
Externí odkaz:
http://hdl.handle.net/10150/624012
http://arizona.openrepository.com/arizona/handle/10150/624012
http://arizona.openrepository.com/arizona/handle/10150/624012
Autor:
Kóspál, Á., de Miera, F. Cruz-Sáenz, White, J. A., Ábrahám, P., Chen, L., Csengeri, T., Dong, R., Dunham, M. M., Fehér, O., Green, J. D., Hashimoto, J., Henning, Th., Hogerheijde, M., Kudo, T., Liu, H. B., Takami, M., Vorobyov, E. I.
FU Orionis-type objects (FUors) are low-mass pre-main sequence stars undergoing a temporary, but significant increase of mass accretion rate from the circumstellar disk onto the protostar. It is not yet clear what triggers the accretion bursts and wh
Externí odkaz:
http://arxiv.org/abs/2106.14409
Autor:
Agurto-Gangas, C., Pineda, J. E., Szucs, L., Testi, L., Tazzari, M., Miotello, A., Caselli, P., Dunham, M., Stephens, I. W., Bourke, T. L.
Publikováno v:
A&A 623, A147 (2019)
A good constraint of when the growth of dust grains from sub-micrometer to millimeter sizes occurs, is crucial for planet formation models. This provides the first step towards the production of pebbles and planetesimals in protoplanetary disks. Curr
Externí odkaz:
http://arxiv.org/abs/1901.05021
Autor:
Kristensen, L. E., Dunham, M. M.
Publikováno v:
A&A 618, A158 (2018)
(Abridged) Protostellar systems evolve from prestellar cores, through the deeply embedded stage and then disk-dominated stage, before they end up on the main sequence. Knowing how much time a system spends in each stage is crucial for understanding h
Externí odkaz:
http://arxiv.org/abs/1807.11262
Autor:
Kóspál, Á., Ábrahám, P., Csengeri, T., Fehér, O., Hogerheijde, M. R., Brinch, Ch., Dunham, M. M., Vorobyov, E. I., Salter, D. M., Henning, Th.
Publikováno v:
The Astrophysical Journal, Volume 843, Issue 1, article id. 45, 12 pp. (2017)
A long-standing open issue of the paradigm of low-mass star formation is the luminosity problem: most protostars are less luminous than theoretically predicted. One possible solution is that the accretion process is episodic. FU Ori-type stars (FUors
Externí odkaz:
http://arxiv.org/abs/1707.09883
Autor:
Mottram, J. C., van Dishoeck, E. F., Kristensen, L. E., Karska, A., José-García, I. San, Khanna, S., Herczeg, G. J., Andr, Ph., Bontemps, S., Cabrit, S., Carney, M. T., Drozdovskaya, M. N., Dunham, M. M., Evans, N. J., Fedele, D., Green, J. D., Harsono, D., Johnstone, D., Jørgensen, J. K., Könyves, V., Nisini, B., Persson, M. V., Tafalla, M., Visser, R., Yıldız, U. A.
[Abridged] We present spectroscopic observations in H$_{2}$O, CO and related species with \textit{Herschel} HIFI and PACS, as well as ground-based follow-up with the JCMT and APEX in CO, HCO$^{+}$ and isotopologues, of a sample of 49 nearby ($d<$500\
Externí odkaz:
http://arxiv.org/abs/1701.04647
Autor:
Kóspál, Á., Ábrahám, P., Acosta-Pulido, J. A., Dunham, M. M., García-Álvarez, D., Hogerheijde, M. R., Kun, M., Moór, A., Farkas, A., Hajdu, G., Hodosán, G., Kovács, T., Kriskovics, L., Marton, G., Molnár, L., Pál, A., Sárneczky, K., Sódor, Á., Szakáts, R., Szalai, T., Szegedi-Elek, E., Szing, A., Tóth, I., Vida, K., Vinkó, J.
Publikováno v:
A&A 596, A52 (2016)
HBC 722 (V2493 Cyg) is a young eruptive star in outburst since 2010. It is an FU Orionis-type object with an atypically low outburst luminosity. Because it was well characterized in the pre-outburst phase, HBC 722 is one of the few FUors where we can
Externí odkaz:
http://arxiv.org/abs/1607.05925
Autor:
Thompson, M. A., Scicluna, P., Kemper, F., Geach, J. E., Dunham, M. M., Morata, O., Ertel, S., Ho, P. T. P., Dempsey, J., Coulson, I., Petitpas, G., Kristensen, L. E.
We present millimetre (SMA) and sub-millimetre (SCUBA-2) continuum observations of the peculiar star KIC 8462852 which displayed several deep and aperiodic dips in brightness during the Kepler mission. Our observations are approximately confusion-lim
Externí odkaz:
http://arxiv.org/abs/1512.03693
Autor:
Rumble, D., Hatchell, J., Gutermuth, R. A., Kirk, H., Buckle, J., Beaulieu, S. F., Berry, D. S., Broekhoven-Fiene, H., Currie, M. J., Fich, M., Jenness, T., Johnstone, D., Mottram, J. C., Nutter, D., Pattle, K., Pineda, J. E., Quinn, C., Salji, C., Tisi, S., Walker-Smith, S., Di Francesco, J., Hogerheijde, M. R., Ward-Thompson, D., Allen, L. E., Cieza, L. A., Dunham, M. M., Harvey, P. M., Stapelfeldt, K. R., Bastien, P., Butner, H., Chen, M., Chrysostomou, A., Coude, S., Davis, C. J., Drabek-Maunder, E., Duarte-Cabral, A., Fiege, J., Friberg, P., Friesen, R., Fuller, G. A., Graves, S., Greaves, J., Gregson, J., Holland, W., Joncas, G., Kirk, J. M., Knee, L. B. G., Mairs, S., Marsh, K., Matthews, B. C., Moriarty-Schieven, G., Rawlings, J., Richer, J., Robertson, D., Rosolowsky, E., Sadavoy, S., Thomas, H., Tothill, N., Viti, S., White, G. J., Wilson, C. D., Wouterloot, J., Yates, J., Zhu, M.
We present SCUBA-2 450micron and 850micron observations of the Serpens MWC 297 region, part of the JCMT Gould Belt Survey of nearby star-forming regions. Simulations suggest that radiative feedback influences the star-formation process and we investi
Externí odkaz:
http://arxiv.org/abs/1412.5965
Autor:
Urquhart, J. S., Morgan, L. K., Figura, C. C., Moore, T. J. T., Lumsden, S. L., Hoare, M. G., Oudmaijer, R. D., Mottram, J. C., Davies, B., Dunham, M. K.
The Red MSX Source (RMS) survey has identified a sample of ~1200 massive young stellar objects (MYSOs), compact and ultra compact HII regions from a sample of ~2000 MSX and 2MASS colour selected sources. We have used the 100 m Green Bank telescope to
Externí odkaz:
http://arxiv.org/abs/1107.3913