Zobrazeno 1 - 10
of 114
pro vyhledávání: '"John G. Hoessel"'
Publikováno v:
The Astrophysical Journal. 690:1158-1180
We measure the rest-frame B-band luminosity function of red-sequence galaxies (RSLF) of five intermediate-redshift (0.5 < z < 0.9), high-mass (sigma > 950 km/s) clusters. Cluster galaxies are identified through photometric redshifts based on imaging
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bd9ebd3c4157879b74a0cc1b8ba3740e
https://doi.org/10.1088/0004-637x/690/2/1158
https://doi.org/10.1088/0004-637x/690/2/1158
Publikováno v:
The Astronomical Journal. 127:2322-2343
Repeated imaging observations of NGC 4395 were made with the WIYN 3.5 m and the KPNO 2.1 m telescopes. From the photometry of the resolved brighter stars in this galaxy eleven Cepheids with periods ranging between 12 and 90 days have been identified.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::182fd7f89dc42ad1affb92b6d889b103
https://doi.org/10.1086/382244
https://doi.org/10.1086/382244
Autor:
A. Saha, Frank Thim, Andrew E. Dolphin, John G. Hoessel, Evan D. Skillman, Edward W. Olszewski, John S. Gallagher
Publikováno v:
The Astronomical Journal. 127:875-896
We report the findings of a new search for RR Lyraes in an M31 halo field located 40 arcminutes from the nucleus of the galaxy along the minor axis. We detected 37 variable stars, of which 24 are classified as RR Lyraes and the others are ambiguous.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b698bd83e7d62bbbe3e84b5159b75602
https://doi.org/10.1086/381301
https://doi.org/10.1086/381301
Autor:
R. C. Dohm-Palmer, Mario Mateo, Andrew E. Dolphin, A. Saha, Andrew A. Cole, J. S. Gallagher, Evan D. Skillman, John G. Hoessel, Eline Tolstoy
Publikováno v:
The Astronomical Journal. 126:187-196
We present a measurement of the star formation history of Sextans A, based on WFPC2 photometry that is 50% complete to V=27.5 (M_V ~+ 1.9) and I=27.0. The star formation history and chemical enrichment history have been measured through modeling of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6b61f5013ffc2daa2c569584c0210b86
https://doi.org/10.1086/375761
https://doi.org/10.1086/375761
Autor:
Eline Tolstoy, R. C. Dohm-Palmer, Mario Mateo, John G. Hoessel, Evan D. Skillman, Andrew A. Cole, Andrew E. Dolphin, A. Saha, John S. Gallagher
Publikováno v:
The Astronomical Journal. 125:1261-1290
We have identified 82 short-period variable stars in Sextans A from deep Wide Field Planetary Camera 2 observations. All the periodic variables appear to be short-period Cepheids, with periods as small as 0.8 days for fundamental mode Cepheids and 0.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::28b7e6ba7b2d4a9ad9e1c2c1b72db3bf
https://doi.org/10.1086/346279
https://doi.org/10.1086/346279
Publikováno v:
The Astronomical Journal. 124:839-861
Using repeated imaging with the WIYN 3.5 m telescope at Kitt Peak, we have identified 24 Cepheids in IC 342. For 20 of them, we have obtained reliable r and i photometry. In addition, we have identified 52 other variables (with varying degrees of dat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d673a398be303c649d5e464bb1cdb56e
https://doi.org/10.1086/341649
https://doi.org/10.1086/341649
Autor:
R. C. Dohm-Palmer, Eline Tolstoy, John G. Hoessel, A. Saha, Mario Mateo, Andrew A. Cole, Andrew E. Dolphin, Evan D. Skillman, J. S. Gallagher
Publikováno v:
The Astrophysical Journal. 550:554-569
We present WFPC2 VI photometry of a field in the halo of IC 1613, finding 13 RR Lyraes and 11 Cepheids. Our photometry of the red giant branch tip and red clump is used to derive distances to IC 1613, which are consistent with each other and with dis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4aa15227a868f3c9705273d409c826f5
https://doi.org/10.1086/319809
https://doi.org/10.1086/319809
Autor:
Michael S. Bessell, John Krist, Richard E. Griffiths, R. Sahai, Carl J. Grillmair, J. Jeff Hester, Jeremy Mould, Stefan Keller, Daniela Calzetti, John Clarke, Gilda E. Ballester, Jon A. Holtzman, Paul A. Scowen, Christopher J. Burrows, John S. Gallagher, Alan M. Watson, Alex Ridgewell, Robin W. Evans, John G. Hoessel, Vicki Meadows, David Crisp, John T. Trauger, Karl R. Stapelfeldt
Publikováno v:
The Astrophysical Journal. 536:266-276
The inner part of the northeast middle radio lobe of the radio galaxy Centaurus A is the site of complex interactions. This area contains a large H I cloud as well as filaments of ionized gas and associated blue knots, several of which exist along th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::63e1fb3b8e0efa3ec7668d041888daec
https://doi.org/10.1086/308927
https://doi.org/10.1086/308927
Autor:
Gilda E. Ballester, Jeremy Mould, James A. Westphal, Alan M. Watson, John Clarke, J. Jeff Hester, M. Vincent, Paul A. Scowen, Christopher J. Burrows, Richard E. Griffiths, Jon A. Holtzman, John S. Gallagher, John T. Trauger, Walter M. Harris, Karl R. Stapelfeldt, Robert A. West, Robin W. Evans, David Crisp, John G. Hoessel
Publikováno v:
Icarus. 143:189-204
Jupiter's low and mid-latitudes are examined using ultraviolet (UV) images obtained with the Hubble Space Telescope Wide Field and Planetary Camera 2 over the period of 1994–1997. Effective atmospheric pressures probed by the F160W, F218W, and F255
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::65d58859752a0054a0b5febff4a7d9d5
https://doi.org/10.1006/icar.1999.6232
https://doi.org/10.1006/icar.1999.6232
Autor:
Paul A. Scowen, M. Vincent, David Crisp, John S. Gallagher, J. Jeff Hester, Gilda E. Ballester, James A. Westphal, John G. Hoessel, Jeremy Mould, Karl R. Stapelfeldt, Alan M. Watson, Walter M. Harris, John Clarke, John T. Trauger, Richard E. Griffiths, Robert A. West, Jon A. Holtzman, Robin W. Evans, Christopher J. Burrows
Publikováno v:
Icarus. 143:205-222
Jupiter's polar regions are examined using ultraviolet (UV, 120–320 nm) images obtained with the Hubble Space Telescope Wide Field and Planetary Camera 2 over the period of 1994–1997. These images probe the stratospheric aerosols at pressures of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dae3ecced2b5e219e0eccffd9a6f3f60
https://doi.org/10.1006/icar.1999.6233
https://doi.org/10.1006/icar.1999.6233