Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Seguel, A."'
Autor:
Seguel, P. J. Alister, Schleicher, D. R. G., Boekholt, T. C. N., Fellhauer, M., Klessen, R. S.
Runaway collisions in dense clusters may lead to the formation of supermassive black hole (SMBH) seeds, and this process can be further enhanced by accretion, as recent models of SMBH seed formation in Population III star clusters have shown. This ma
Externí odkaz:
http://arxiv.org/abs/1912.01737
Autor:
Schleicher, D. R. G., Fellhauer, M. A., Boekholt, T., Reinoso, B., Klessen, R. S., Vergara, M. Z. C., Seguel, P. J. Alister, Bovino, S., Olave, C., Díaz, V. B., Fibla, P., Riaz, R., Bandyopadhyay, B., Martin-Perez, R. I. San, Zamponi, J., Haemmerle, L.
To explain the observed population of supermassive black holes at z~7, very massive seed black holes or, alternatively, super-Eddington scenarios are needed to reach final masses of the order of 10^9 solar masses. A popular explanation for massive se
Externí odkaz:
http://arxiv.org/abs/1812.02052
Autor:
Els, S. G., Schoeck, M., Bustos, E., Seguel, J., Vasquez, J., Walker, D., Riddle, R., Skidmore, W., Travouillon, T., Vogiatzis, K.
The optical turbulence conditions as measured between 2004 until end of 2008 above Cerro Tololo, their seasonal as well as nocturnal behavior are presented. A comparison with the MASS-DIMM system of the Thirty Meter Telescope site testing was conduct
Externí odkaz:
http://arxiv.org/abs/0906.3665
Autor:
Els, S. G., Travouillon, T., Schoeck, M., Riddle, R., Skidmore, W., Seguel, J., Bustos, E., Walker, D.
The results on the vertical distribution of optical turbulence above the five mountains which were investigated by the site testing for the Thirty Meter Telescope (TMT) are reported. On San Pedro Martir in Mexico, the 13 North site on Mauna Kea and t
Externí odkaz:
http://arxiv.org/abs/0904.1865
Autor:
Schoeck, M., Els, S., Riddle, R., Skidmore, W., Travouillon, T., Blum, R., Bustos, E., Chanan, G., Djorgovski, S. G., Gillett, P., Gregory, B., Nelson, J., Otarola, A., Seguel, J., Vasquez, J., Walker, A., Walker, D., Wang, L.
As part of the conceptual and preliminary design processes of the Thirty Meter Telescope (TMT), the TMT site testing team has spent the last five years measuring the atmospheric properties of five candidate mountains in North and South America with a
Externí odkaz:
http://arxiv.org/abs/0904.1183
Autor:
Kim, Sang Chul, Lee, Myung Gyoon, Geisler, Doug, Sarajedini, Ata, Park, Hong Soo, Hwang, Ho Seong, Harris, William E., Seguel, Juan C., von Hippel, Ted
Publikováno v:
Astron.J.134:706-720,2007
We present the result of a wide-field survey of globular clusters (GCs) in M31 covering a 3deg x 3deg field c. We have searched for GCs on CCD images taken with Washington CMT1 filters at the KPNO 0.9 m telescope using steps: (1) inspection of morpho
Externí odkaz:
http://arxiv.org/abs/0706.2904
Autor:
Kundu, A., Majewski, S. R., Rhee, J., Rocha-Pinto, H. J., Polak, A. A., Slesnick, C. L., Kunkel, W. E., Johnston, K. V., Patterson, R. J., Geisler, D., Gieren, W., Seguel, J., Smith, V. V., Palma, C., Arenas, J., Crane, J. D., Hummels, C. B.
Publikováno v:
Astrophys.J.576:L125-L130,2002
We describe first results of a spectroscopic probe of selected fields from the Grid Giant Star Survey. Multifiber spectroscopy of several hundred stars in a strip of eleven fields along delta approximately -17^{circ}, in the range 12 <~ alpha <~ 17 h
Externí odkaz:
http://arxiv.org/abs/astro-ph/0208276
Autor:
Strolger, L. -G., Smith, R. C., Suntzeff, N. B., Phillips, M. M., Aldering, G., Nugent, P., Knop, R., Perlmutter, S., Schommer, R. A., Ho, L. C., Hamuy, M., Krisciunas, K., Germany, L. M., Covarrubias, R., Candia, P., Athey, A., Blanc, G., Bonacic, A., Bowers, T., Conley, A., Dahlen, T., Freedman, W., Galaz, G., Gates, E., Goldhaber, G., Goobar, A., Groom, D., Hook, I. M., Marzke, R., Mateo, M., McCarthy, P., Mendez, J., Muena, C., Persson, S. E., Quimby, R., Roth, M., Ruiz-Lapuente, P., Seguel, J., Szentgyorgyi, A., von Braun, K., Wood-Vasey, W. M., York, T.
Publikováno v:
Astron.J.124:2905,2002
SN 1999aw was discovered during the first campaign of the Nearby Galaxies Supernova Search (NGSS) project. This luminous, slow-declining (Delta m_{15} (B) = 0.81 \pm 0.03) Type Ia supernova was noteworthy in at least two respects. First, it occurred
Externí odkaz:
http://arxiv.org/abs/astro-ph/0207409
Autor:
Lee, Myung Gyoon, Kim, Sang Chul, Geisler, Doug, Seguel, Juan, Sarajedini, Ata, Harris, William
We present a progress report of our wide field CCD survey of globular clusters in M31. We have covered 3 deg X 3 deg area centered on M31, using the KPNO 0.9m and Washington CMT1 filters. Our survey is much deeper and more sensitive than previous sur
Externí odkaz:
http://arxiv.org/abs/astro-ph/0109219
Autor:
Kim, Sang Chul, Lee, Myung Gyoon, Geisler, Doug, Seguel, Juan, Sarajedini, Ata, Harris, William E.
We present a progress report on Washington photometry of several hundred new globular cluster (GC) candidates in M31 which were recently found from our new CCD survey of GCs. Washington CMT1 filters we used are very efficient to survey extragalactic
Externí odkaz:
http://arxiv.org/abs/astro-ph/0109217