Zobrazeno 1 - 10
of 78
pro vyhledávání: '"J. L. Kohl"'
Autor:
F. La Barbera, Hugo V. Capelato, Paulo A. A. Lopes, I. G. de la Rosa, J. L. Kohl-Moreira, R. R. de Carvalho
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 408:1313-1334
This is the first paper of a series presenting the Spheroids Panchromatic Investigation in Different Environmental Regions (SPIDER). The sample of spheroids consists of 5080 bright (M r < -20) early-type galaxies (ETGs), in the redshift range of 0.05
Autor:
R. R. de Carvalho, A. Iovino, Roy R. Gal, J. L. Kohl-Moreira, S. G. Djorgovski, Thiago S. Gonçalves
Publikováno v:
The Astronomical Journal. 130:425-444
In this paper we present an objectively defined catalog of 459 small, high-density groups of galaxies out to z ~ 0.2 in a region of ~6260 deg2 in the northern sky derived from the Digitized Second Palomar Observatory Sky Survey. Our catalog extends d
Autor:
Ashish Mahabal, R. R. de Carvalho, Robert J. Brunner, Roy R. Gal, S. G. Djorgovski, J. L. Kohl Moreira, P. A. A. Lopes, S. C. Odewahn, B. Stalder
Publikováno v:
The Astronomical Journal. 128:3092-3107
We discuss object classification for a multicolor survey of high-latitude fields from the Digitized Second Palomar Observatory Sky Survey (DPOSS) and the resulting Palomar-Norris Sky Catalog. Two methods are used to perform automated image classifica
Publikováno v:
Astronomy & Astrophysics. 400:347-353
Information on coronal plasma was inferred from the joint analysis of type radio bursts and SOHO UltraViolet Coronagraph Spectrometer (UVCS) observations. The data sample comprises 37 metric type radio bursts observed by ground- based r
Autor:
Salvatore Mancuso, J. L. Kohl, John C. Raymond, Brian G. Marsden, P. L. Smith, M. Uzzo, Yuan-Kuen Ko, L. D. Gardner, R. Wu
Publikováno v:
The Astrophysical Journal. 564:1054-1060
Comet 2P/Encke was observed with UVCS/SOHO near perihelion (2000 September 9 and 11) in the Lyman lines of hydrogen. We present a Lyα image reconstructed from a series of long-slit spectra, along with the intensity ratios of Lyα, Lyβ, and Lyγ. Th
Publikováno v:
The Astrophysical Journal. 560:L193-L196
We announce the resurgence of extreme ion properties in a large, high-latitude coronal hole observed above the north heliographic pole in 2001 February at solar maximum. The observations were taken with the Ultraviolet Coronagraph Spectrometer on the
Publikováno v:
The Astrophysical Journal. 549:L257-L260
We present a self-consistent empirical model for several plasma parameters of a large equatorial coronal hole observed on 1999 November 12 near solar maximum. The model was derived from observations with the Ultraviolet Coronagraph Spectrometer on th
Autor:
Angela Ciaravella, J. Li, Leonard Strachan, Ester Antonucci, John C. Raymond, Giancarlo Noci, Barbara J. Thompson, R. O'Neal, A. A. van Ballegooijen, J. L. Kohl, L. D. Gardner
Publikováno v:
The Astrophysical Journal. 529:575-591
The EUV Imaging Telescope (EIT), Large Angle Spectrometric Coronagraph (LASCO), and Ultraviolet Coronagraph Spectrometer (UVCS) instruments aboard the SOHO satellite observed a prominence eruption (coronal mass ejection) on 1997 December 12. Ejected
Autor:
O. H. W. Siegmund, Marco Romoli, Steven R. Cranmer, Angela Ciaravella, Giannina Poletto, John C. Raymond, Leonard Strachan, S. Giordano, L. D. Gardner, Carlo Benna, Silvano Fineschi, J. Michels, Claudio Pernechele, Xing Li, M. C. E. Huber, Giuseppe Tondello, A. Modigliani, Daniele Spadaro, Giancarlo Noci, Raid Suleiman, Ester Antonucci, Giampiero Naletto, Piergiorgio Nicolosi, Randall V. Martin, Margarita Karovska, P. L. Smith, Shadia Rifai Habbal, J. L. Kohl, D. Dobrzycka, R. O'Neal, Alexander Panasyuk
Publikováno v:
Scopus-Elsevier
We present a comprehensive and self-consistent empirical model for several plasma parameters in the extended solar corona above a polar coronal hole. The model is derived from observations with the SOHO Ultraviolet Coronagraph Spectrometer (UVCS/SOHO
Autor:
John C. Raymond, Barbara J. Thompson, A. Modigliani, Angela Ciaravella, Leonard Strachan, J. L. Kohl, Giancarlo Noci, L. D. Gardner, O. C. St. Cyr, Ester Antonucci
Publikováno v:
The Astrophysical Journal. 510:1053-1063
A coronal transient was observed on 1997 March 6 at 1.6 R☉ over an active region on the east limb. We observed both the edge of horizontally compressed gas and the diffuse curtain of coronal material. The region was monitored for 4 hr, and the H I