Zobrazeno 1 - 10
of 419
pro vyhledávání: '"Olszewski, E."'
Autor:
Dupree, A. K., Dotter, A., Johnson, C. I., Marino, A. F., Milone, A. P., Bailey, J. I., Crane, J. D., Mateo, M., Olszewski, E. W.
High-resolution spectroscopic observations were taken of 29 extended main-sequence turnoff (eMSTO) stars in the young (similar to 200 Myr) Large Magellanic Cloud (LMC) cluster, NGC 1866, using the Michigan/Magellan Fiber System and MSpec spectrograph
Externí odkaz:
http://hdl.handle.net/10150/625815
http://arizona.openrepository.com/arizona/handle/10150/625815
http://arizona.openrepository.com/arizona/handle/10150/625815
Autor:
Narayan, G., Axelrod, T., Holberg, J. B., Matheson, T., Saha, A., Olszewski, E., Claver, J., Stubbs, C. W., Bohlin, R. C., Deustua, S., Rest, A.
We present the initial results from a program aimed at establishing a network of hot DA white dwarfs to serve as spectrophotometric standards for present and future wide-field surveys. These stars span the equatorial zone and are faint enough to be c
Externí odkaz:
http://hdl.handle.net/10150/621236
http://arizona.openrepository.com/arizona/handle/10150/621236
http://arizona.openrepository.com/arizona/handle/10150/621236
Autor:
Calamida, A., Matheson, T., Olszewski, E. W., Saha, A., Axelrod, Tim, Shanahan, C., Holberg, J., Points, S., Narayan, G., Malanchev, K., Ridden-Harper, R., Gentile-Fusillo, N., Raddi, R., Bohlin, R., Rest, A., Hubeny, I., Deustua, S., Mackenty, . J., Sabbi, E., Stubbs, C. W.
We verified for photometric stability a set of DA white dwarfs with Hubble Space Telescope magnitudes from the near-ultraviolet to the near-infrared and ground-based spectroscopy by using time-spaced observations from the Las Cumbres Observatory netw
Externí odkaz:
http://arxiv.org/abs/2209.09950
Autor:
Bennet, P., Sand, D. J., Crnojević, D., Weisz, D. R., Caldwell, N., Guhathakurta, P., Hargis, J. R., Karunakaran, A., Mutlu-Pakdil, B., Olszewski, E., Salzer, J. J., Seth, A. C., Simon, J. D., Spekkens, K., Stark, D. P., Strader, J., Tollerud, E. J., Toloba, E., Willman, B.
We present observations of the dwarf galaxies GALFA Dw3 and GALFA Dw4 with the Advanced Camera for Surveys (ACS) on the Hubble Space Telescope (HST). These galaxies were initially discovered as optical counterparts to compact HI clouds in the GALFA s
Externí odkaz:
http://arxiv.org/abs/2101.08270
Autor:
Paterson, K., Lundquist, M. J., Rastinejad, J. C., Fong, W., Sand, D. J., Andrews, J. E., Amaro, R. C., Eskandari, O., Wyatt, S., Daly, P. N., Bradley, H., Zhou-Wright, S., Valenti, S., Yang, S., Christensen, E., Gibbs, A. R., Shelly, F., Bilinski, C., Chomiuk, L., Corsi, A., Drout, M. R., Foley, R. J., Gabor, P., Garnavich, P., Grier, C. J., Hamden, E., Krantz, H., Olszewski, E., Paschalidis, V., Reichart, D., Rest, A., Smith, N., Strader, J., Trilling, D., Veillet, C., Wagner, R. M., Zabludoff, A.
With the conclusion of the third observing run for Advanced LIGO/Virgo (O3), we present a detailed analysis of both triggered and serendipitous observations of 17 gravitational wave (GW) events (7 triggered and 10 purely serendipitous) from the Searc
Externí odkaz:
http://arxiv.org/abs/2012.11700
Autor:
Lundquist, M. J., Paterson, K., Fong, W., Sand, D. J., Andrews, J. E., Shivaei, I., Daly, P. N., Valenti, S., Yang, S., Christensen, E., Gibbs, A. R., Shelly, F., Wyatt, S., Kuhn, O., Amaro, R. C., Arcavi, I., Behroozi, P., Butler, N., Chomiuk, L., Corsi, A., Drout, M. R., Egami, E., Fan, X., Foley, R. J., Frye, B., Gabor, P., Green, E. M., Grier, C. J., Guzman, F., Hamden, E., Howell, D. A., Jannuzi, B. T., Kelly, P., Milne, P., Moe, M., Nugent, A., Olszewski, E., Palazzi, E., Paschalidis, V., Psaltis, D., Reichart, D., Rest, A., Rossi, A., Schroeder, G., Smith, P. S., Smith, N., Spekkens, K., Strader, J., Stark, D. P., Trilling, D., Veillet, C., Wagner, M., Weiner, B., Wheeler, J. C., Williams, G. G., Zabludoff, A.
We present Searches After Gravitational-waves Using ARizona Observatories (SAGUARO), a comprehensive effort dedicated to the discovery and characterization of optical counterparts to gravitational wave (GW) events. SAGUARO utilizes ground-based facil
Externí odkaz:
http://arxiv.org/abs/1906.06345
Autor:
Calamida, A., Matheson, T., Saha, A., Olszewski, E., Narayan, G., Claver, J., Shanahan, C., Holberg, J., Axelrod, T., Bohlin, R., Stubbs, C. W., Deustua, S., Hubeny, I., Mackenty, J., Points, S., Rest, A., Sabbi, E.
We present precise photometry and spectroscopy for 23 candidate spectrophotometric standard white dwarfs. The selected stars are distributed in the Northern hemisphere and around the celestial equators and are all fainter than r ~ 16.5 mag. This netw
Externí odkaz:
http://arxiv.org/abs/1812.00034
Autor:
Bonnivard, V., Combet, C., Maurin, D., Geringer-Sameth, A., Koushiappas, S. M., Walker, M. G., Mateo, M., Olszewski, E., Bailey III, J. I.
Publikováno v:
2015 ApJ 808 L36
The dwarf spheroidal galaxies (dSph) of the Milky Way are among the most attractive targets for indirect searches of dark matter. In this work, we reconstruct the dark matter annihilation (J-factor) and decay profiles for the newly discovered dSph Re
Externí odkaz:
http://arxiv.org/abs/1504.03309
Autor:
Sand, D. J., Crnojević, D., Bennet, P., Willman, B., Hargis, J., Strader, J., Olszewski, E., Tollerud, E. J., Simon, J. D., Caldwell, N., Guhathakurta, P., James, B. L., Koposov, S., McLeod, B., Morrell, N., Peacock, M., Salinas, R., Seth, A. C., Stark, D. P., Toloba, E.
We report five Local Volume dwarf galaxies (two of which are presented here for the first time) uncovered during a comprehensive archival search for optical counterparts to ultra-compact high velocity clouds (UCHVCs). The UCHVC population of HI cloud
Externí odkaz:
http://arxiv.org/abs/1503.00720
Autor:
Koposov, S. E., Belokurov, V., Zucker, D. B., Lewis, G. F., Ibata, R. A., Olszewski, E. W., Lopez-Sanchez, A. R., Hyde, E. A.
We show that a combination of infrared photometry from WISE and 2MASS surveys can yield highly pure samples of M giant stars. We take advantage of the new WISE$\cap$2MASS M giant selection to trace the Sagittarius trailing tail behind the Galactic di
Externí odkaz:
http://arxiv.org/abs/1410.6482