Zobrazeno 1 - 10
of 101
pro vyhledávání: '"Alan Stockton"'
Autor:
Alan Stockton, Hsin-Yi Shih
Publikováno v:
Proceedings of the International Astronomical Union. 11:67-70
We present observations of a remarkable compact group of galaxies at z = 2.48. Four galaxies, all within 40 kpc of each other, surround a powerful high redshift radio source. This group comprises two compact red passive galaxies and a pair of merging
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::91121d428f418204f5089ff3b3b6f36a
https://doi.org/10.1017/s1743921315010248
https://doi.org/10.1017/s1743921315010248
Autor:
Caitlin M. Casey, Nick Scoville, Alan Stockton, Asantha Cooray, Hai Fu, J. Xavier Prochaska, Jacob Isbell
We present Atacama Large Millimeter/submillimeter Array (ALMA) 870um observations of 29 bright Herschel sources near high-redshift QSOs. The observations confirm that 20 of the Herschel sources are submillimeter-bright galaxies (SMGs) and identify 16
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4b76ef8eb9b5fde244efb0f5a3beafa6
Publikováno v:
The Astrophysical Journal. 709:L58-L63
From a search of a portion of the sky covered by the SDSS and UKIDSS databases, we have located 2 galaxies at z~0.5 that have properties similar to those of the luminous passive compact galaxies found at z~2.5. From Keck moderate-resolution spectrosc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1fae9e35854fae019d5b6b86b08654f7
https://doi.org/10.1088/2041-8205/709/1/l58
https://doi.org/10.1088/2041-8205/709/1/l58
Autor:
Alan Stockton, Hai Fu
Publikováno v:
The Astrophysical Journal. 696:1693-1699
We present Spitzer IRS spectra and MIPS photometry of 12 radio-loud QSOs with FR II morphologies at z ~ 0.3. Six of the sources are surrounded by luminous extended emission-line regions (EELRs), while the other six do not have such extended nebulae.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ca1f2d9bfb1676210a9875f14c7b4bd1
https://doi.org/10.1088/0004-637x/696/2/1693
https://doi.org/10.1088/0004-637x/696/2/1693
Autor:
Mark Lacy, Gabriela Canalizo, Chien Y. Peng, Bruno Jungwiert, Alan Stockton, Nicola Bennert, Francois Schweizer
Publikováno v:
The Astrophysical Journal. 677:846-857
We present results from a pilot HST ACS deep imaging study in broad-band V of five low-redshift QSO host galaxies classified in the literature as ellipticals. The aim of our study is to determine whether these early-type hosts formed at high redshift
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f1c595158714b3865a7c59d025bb00ad
https://doi.org/10.1086/529068
https://doi.org/10.1086/529068
Autor:
Hai Fu, Alan Stockton
Publikováno v:
The Astrophysical Journal. 666:794-805
We present Gemini integral field spectroscopy and Keck II longslit spectroscopy of the extended emission-line region (EELR) around the quasar 4C 37.43. The velocity structure of the ionized gas is complex and cannot be explained globally by a simple
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::110f6e0cf279ef65a22387846a3409e7
https://doi.org/10.1086/520530
https://doi.org/10.1086/520530
Autor:
Alan Stockton, Hai Fu
Publikováno v:
The Astrophysical Journal. 664:L75-L78
We present a correlation between the presence of luminous extended emission-line regions (EELRs) and the metallicity of the broad-line regions (BLRs) of low-redshift quasars. The result is based on ground-based [O III] 5007 narrow-band imaging and Hu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::beef807f4ed9e5538027bbcabf0478ef
https://doi.org/10.1086/520959
https://doi.org/10.1086/520959
Autor:
Alan Stockton, Hsin-Yi Shih
We present observations of a remarkable compact group of galaxies at $z = 2.48$. Four galaxies, all within 40 kpc of each other, surround a powerful high redshift radio source. This group comprises two compact red passive galaxies and a pair of mergi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::db2ef5f676fe7ece6ad60e380c6dfbba
Publikováno v:
New Astronomy Reviews. 50:694-700
Extended emission-line regions (EELRs) on scales of a few tens of kpc are found around a substantial fraction of steep-spectrum radio-loud QSOs. In most cases, at least at low redshifts, the distribution of this gas seems to be uncorrelated with eith
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8516b629c94f56b6170a6cad963d73b6
https://doi.org/10.1016/j.newar.2006.06.024
https://doi.org/10.1016/j.newar.2006.06.024
Publikováno v:
New Astronomy Reviews. 50:748-753
We report NIR (primarily H-band) AO imaging with the Gemini-N and Subaru telescopes, of 32 nearby (z 2.1 L H * ), with a range −23.5 to −26.5. At L H * , all hosts have a dominant disk component, while at > 2 L H * most are ellipticals. “Distur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6b2734c61524d0b5dfd9de5309d2f404
https://doi.org/10.1016/j.newar.2006.06.086
https://doi.org/10.1016/j.newar.2006.06.086