Zobrazeno 1 - 10
of 857
pro vyhledávání: '"O'Neil, K"'
Autor:
O'Neil, K., Schneider, Stephan E., van Driel, W., Liu, G., Joseph, T., Schwortz, A. C., Butcher, Z.
A search has been made for 21 cm HI line emission in a total of 350 unique galaxies from two samples whose optical properties indicate they may be massive The first consists of 241 low surface brightness (LSB) galaxies of morphological type Sb and la
Externí odkaz:
http://arxiv.org/abs/2307.11202
Autor:
Jia, Siyao, Xu, Ningyuan, Lu, Jessica R., Chu, D. S, O'Neil, K. Kosmo, Drechsler, W. B., Hosek Jr., M. W., Sakai, S., Do, T., Ciurlo, A., Gautam, A. K., Ghez, A. M., Becklin, E., Morris, M. R., Bentley, R. O.
We measure the 3D kinematic structures of the young stars within the central 0.5 parsec of our Galactic Center using the 10 m telescopes of the W.~M.~Keck Observatory over a time span of 25 years. Using high-precision measurements of positions on the
Externí odkaz:
http://arxiv.org/abs/2302.02040
Autor:
O'Neil, K. Kosmo, Martinez, G. D., Hees, A., Ghez, A. M., Do, T., Witzel, G., Konopacky, Q., Becklin, E. E., Chu, D. S., Lu, J., Matthews, K., Sakai, S.
Publikováno v:
AJ, 158, 4 (2019)
We propose a new approach to Bayesian prior probability distributions (priors) that can improve orbital solutions for low-phase-coverage orbits, where data cover less than approximately 40% of an orbit. In instances of low phase coverage such as with
Externí odkaz:
http://arxiv.org/abs/1809.05490
Autor:
Minchin, R. F., Momjian, E., Auld, R., Davies, J. I., Valls-Gabaud, D., Karachentsev, I. D., Henning, P. A., O'Neil, K. L., Schneider, S., Smith, M. W. L., Stage, M. D., Taylor, R., van Driel, W.
Publikováno v:
AJ, 140, 1093 (2010)
Two 5 square degree regions around the NGC 7332/9 galaxy pair and the isolated galaxy NGC 1156 have been mapped in the 21-cm line of neutral hydrogen (HI) with the Arecibo L-band Feed Array out to a redshift of ~0.065$ (~20,000$ km/s) as part of the
Externí odkaz:
http://arxiv.org/abs/1009.4438
Autor:
Putman, M. E., Henning, P., Bolatto, A., Keres, D., Pisano, D. J., Rosenberg, J., Bigiel, F., Bryan, G., Calzetti, D., Carilli, C., Charlton, J., Chen, H. -W., Darling, J., Gibson, S., Gnedin, N., Gnedin, O., Heitsch, F., Hunter, D., Kannappan, S., Krumholz, M., Lazarian, A., Lazio, J., Leroy, A., Lockman, F. J., Mac Low, M., Maller, A., Meurer, G., O'Neil, K., Ostriker, J., Peek, J. E. G., Prochaska, J. X., Rand, R., Robertson, B., Schiminovich, D., Simon, J., Stanimirovic, S., Thilker, D., Thom, C., Tinker, J., van der Hulst, J. M., Wakker, B., Weiner, B., Wolfe, A., Wong, O. I., Young, L.
Great strides have been made in the last two decades in determining how galaxies evolve from their initial dark matter seeds to the complex structures we observe at z=0. The role of mergers has been documented through both observations and simulation
Externí odkaz:
http://arxiv.org/abs/0902.4717
Using B, R, and H-alpha images of roughly equal-sized samples of low surface brightness (LSB) and high surface brightness (HSB) galaxies (~40 galaxies apiece), we have explored the dependence of HII region properties on local and global disc surface
Externí odkaz:
http://arxiv.org/abs/0810.5062
Autor:
O'Neil, K.
Massive low surface brightness galaxies have disk central surface brightnesses at least one magnitude fainter than the night sky, but total magnitudes and masses that show they are among the largest galaxies known. Like all low surface brightness (LS
Externí odkaz:
http://arxiv.org/abs/0803.4463
Autor:
Cortese, L., Minchin, R. F., Auld, R. R., Davies, J. I., Catinella, B., Momjian, E., Rosenberg, J. L., Taylor, R., Gavazzi, G., O'Neil, K., Baes, M., Boselli, A., Bothun, G., Koribalski, B., Schneider, S., van Driel, W.
We present 21 cm HI line observations of 5x1 square degrees centered on the local Abell cluster 1367 obtained as part of the Arecibo Galaxy Environment Survey. One hundred sources are detected (79 new HI measurements and 50 new redshifts), more than
Externí odkaz:
http://arxiv.org/abs/0711.0684
Autor:
O'Neil, K.
Publikováno v:
AIP Conf.Proc.1035:112-118,2008
Massive low surface brightness galaxies have disk central surface brightnesses at least one magnitude fainter than the night sky, but total magnitudes and masses that show they are among the largest galaxies known. Like all low surface brightness (LS
Externí odkaz:
http://arxiv.org/abs/0707.3939
Autor:
Chapman, S. C., Penarrubia, J., Ibata, R., McConnachie, A., Martin, N., Irwin, M., Blain, A., Lewis, G. F., Letarte, B., Lo, K., Ludlow, A., O'neil, K.
We present spectroscopic observations of the AndXII dwarf spheroidal galaxy using DEIMOS/Keck-II, showing it to be moving rapidly through the Local Group (-556 km/s heliocentric velocity, -281 km/s relative to Andromeda from the MW), falling into the
Externí odkaz:
http://arxiv.org/abs/0705.4113