Zobrazeno 1 - 10
of 183
pro vyhledávání: '"Green, James C."'
Autor:
Green, James C.
The Far Ultraviolet (FUV: hereafter 900-1150 A) is a spectral range which contains many of the ground state transitions of common elements but has had limited observational capabilities due to the unique technological requirements to operate in this
Externí odkaz:
http://arxiv.org/abs/2312.16684
Autor:
Keeney, Brian A., Stocke, John T., Pratt, Cameron T., Davis, Julie D., Syphers, David, Danforth, Charles W., Shull, J. Michael, Froning, Cynthia S., Green, James C., Penton, Steven V., Savage, Blair D.
Publikováno v:
2018, ApJS, 237, 11
To establish the connection between galaxies and UV-detected absorption systems in the local universe, a deep ($g\leq20$) and wide ($\sim20^{\prime}$ radius) galaxy redshift survey is presented around 47 sight lines to UV-bright AGN observed by the C
Externí odkaz:
http://arxiv.org/abs/1805.08767
Autor:
Keeney, Brian A., Stocke, John T., Danforth, Charles W., Shull, J. Michael, Pratt, Cameron T., Froning, Cynthia S., Green, James C., Penton, Steven V., Savage, Blair D.
We present basic data and modeling for a survey of the cool, photo-ionized Circum-Galactic Medium (CGM) of low-redshift galaxies using far-UV QSO absorption line probes. This survey consists of "targeted" and "serendipitous" CGM subsamples, originall
Externí odkaz:
http://arxiv.org/abs/1704.00235
Autor:
France, Kevin, Hoadley, Keri, Fleming, Brian T., Kane, Robert, Nell, Nicholas, Beasley, Matthew, Green, James C.
NASA's suborbital program provides an opportunity to conduct unique science experiments above Earth's atmosphere and is a pipeline for the technology and personnel essential to future space astrophysics, heliophysics, and atmospheric science missions
Externí odkaz:
http://arxiv.org/abs/1512.00881
Autor:
Danforth, Charles W., Keeney, Brian A., Tilton, Evan M., Shull, J. Michael, Stevans, Matthew, Pieri, Matthew M., Stocke, John T., Savage, Blair D., France, Kevin, Syphers, David, Smith, Britton D., Green, James C., Froning, Cynthia, Penton, Steven V., Osterman, Steven N.
We use high-quality, medium-resolution {\it Hubble Space Telescope}/Cosmic Origins Spectrograph (\HST/COS) observations of 82 UV-bright AGN at redshifts $z_{AGN}<0.85$ to construct the largest survey of the low-redshift intergalactic medium (IGM) to
Externí odkaz:
http://arxiv.org/abs/1402.2655
Autor:
France, Kevin, Nell, Nicholas, Kane, Robert, Burgh, Eric B., Beasley, Matthew, Green, James C.
We present the first science results from the Sub-orbital Local Interstellar Cloud Experiment (SLICE): moderate resolution 1020-1070A spectroscopy of four sightlines through the local interstellar medium. High signal-to-noise (S/N) spectra of eta Uma
Externí odkaz:
http://arxiv.org/abs/1306.6077
Autor:
Keeney, Brian A., Stocke, John T., Rosenberg, Jessica L., Danforth, Charles W., Ryan-Weber, Emma V., Shull, J. Michael, Savage, Blair D., Green, James C.
Publikováno v:
2013ApJ...765...27K
We have used the Cosmic Origins Spectrograph (COS) to obtain far-UV spectra of three closely-spaced QSO sight lines that probe the circumgalactic medium (CGM) of an edge-on spiral galaxy, ESO 157-49, at impact parameters of 74 and 93 kpc near its maj
Externí odkaz:
http://arxiv.org/abs/1301.4242
Autor:
Stocke, John T., Keeney, Brian A., Danforth, Charles W., Shull, J. Michael, Froning, Cynthia S., Green, James C., Penton, Steven V., Savage, Blair D.
Publikováno v:
2013ApJ...763..148S
The Circumgalactic Medium (CGM) of late-type galaxies is characterized using UV spectroscopy of 11 targeted QSO/galaxy pairs at z < 0.02 with the Hubble Space Telescope Cosmic Origins Spectrograph and ~60 serendipitous absorber/galaxy pairs at z < 0.
Externí odkaz:
http://arxiv.org/abs/1212.5658
Autor:
France, Kevin, Beasley, Matthew, Ardila, David R., Bergin, Edwin A., Brown, Alexander, Burgh, Eric B., Calvet, Nuria, Chiang, Eugene, Cook, Timothy A., Désert, Jean-Michel, Ebbets, Dennis, Froning, Cynthia S., Green, James C., Hillenbrand, Lynne A., Johns-Krull, Christopher M., Koskinen, Tommi T., Linsky, Jeffrey L., Redfield, Seth, Roberge, Aki, Schindhelm, Rebecca, Scowen, Paul A., Stapelfeldt, Karl R., Tumlinson, Jason
Few scientific discoveries have captured the public imagination like the explosion of exoplanetary science during the past two decades. This work has fundamentally changed our picture of Earth's place in the Universe and led NASA to make significant
Externí odkaz:
http://arxiv.org/abs/1208.2270
Publikováno v:
2012PASP..124..830K
We present empirical scaling relations for the significance of absorption features detected in medium resolution, far-UV spectra obtained with the Cosmic Origins Spectrograph (COS). These relations properly account for both the extended wings of the
Externí odkaz:
http://arxiv.org/abs/1206.2951