Results 21 to 30 of about 265,282 (287)

The SSR Brightness Temperature Increment Model Based on a Deep Neural Network

Remote Sensing, 2023
The SSS (sea surface salinity) is an important factor affecting global climate changes, sea dynamic environments, global water cycles, marine ecological environments, and ocean carbon cycles.
Zhongkai Wen, Huan Zhang, Weiping Shu, Liqiang Zhang, Lei Liu, Xiang Lu, Yashi Zhou, Jingjing Ren, Shuang Li, Qingjun Zhang   +9 more
doaj   +1 more source

Evidence for a Non-Expanding Universe: Surface Brightness Data From HUDF [PDF]

, 2005
Surface brightness data can distinguish between a Friedman-Robertson-Walker expanding universe and a non-expanding universe. For surface brightness measured in AB magnitudes per angular area, all FRW models, regardless of cosmological parameters, predict
Lerner, Eric J.
core   +1 more source

Low Surface Brightness Galaxies [PDF]

Annual Review of Astronomy and Astrophysics, 2004
▪ Abstract  The properties of galaxies that are lower in surface brightness than the dark night sky are reviewed. There are substantial selection effects against the discovery of galaxies that are unevolved or diffuse; these systems are missing from most wide field catalogs. Low surface brightness galaxies make up a significant amount of the luminosity
Chris Impey, Greg Bothun
openaire   +2 more sources

Distances from Surface Brightness Fluctuations [PDF]

, 1998
The practice of measuring galaxy distances from their spatial fluctuations in surface brightness is now a decade old. While several past articles have included some review material, this is the first intended as a comprehensive review of the surface ...
A Buzzoni, B Thomsen, D Burstein, D Lynden-Bell, DJ Schlegel, EA Ajhar, EA Ajhar, EA Ajhar, EH Neilsen Jr., EM Green, G Vaucouleurs de, G Worthey, G Worthey, G Worthey, GA Luppino, GA Tammann, GH Jacoby, GP Tiede, H Lorenz, H Spinrad, JB Jensen, JL Tonry, JL Tonry, JL Tonry, JL Tonry, JL Tonry, JL Tonry, JL Tonry, JP Blakeslee, JP Blakeslee, L Simard, M Hamuy, M Sodemann, M Sodemann, MA Pahre, PL Schechter, PL Shopbell, R Ciardullo, RAW Elson, RJ Buta, SM Faber, TR Lauer, WL Freedman   +42 more
core   +2 more sources

TITAN'S SURFACE BRIGHTNESS TEMPERATURES

The Astrophysical Journal, 2009
Radiance from the surface of Titan can be detected from space through a spectral window of low opacity in the thermal infrared at 19 μm (530 cm–1). By combining Composite Infrared Spectrometer observations from Cassini's first four years, we have mapped the latitude distribution of zonally averaged surface brightness temperatures.
Jennings, Donald E., Flasar, Michael, Kunde, Virgil G., Samuelson, Robert E., Pearl, John C., Nixon, Conor A., Carlson, Ronald C., Mamoutkine, Andrei, Brasunas, J. C., Guandique, Ever A., Achterberg, Richard K., Bjoraker, Gordon L., Romani, Paul N., Segura, M. E., Albright, S. A., Elliott, M. H., Tingley, J. S., Calcutt, Simon B., Coustenis, Athéna, Courtin, Régis   +19 more
openaire   +3 more sources

Star-forming Main Sequence of Giant Low Surface Brightness Galaxies

The Astrophysical Journal, 2023
Giant low surface brightness galaxies (GLSBGs) are fundamentally distinct from normal galaxies and other types of LSBGs in terms of star formation and evolution. In this work, we collected 27 local GLSBGs from the literature.
Wei Du, Cheng Cheng, Pengliang Du, Lin Du, Hong Wu   +4 more
doaj   +1 more source

Retrieval of Desert Microwave Land Surface Emissivity Based on Machine Learning Algorithms

Remote Sensing, 2023
Based on the community radiative transfer model, ensemble tree-based random forest algorithm, and extreme gradient boosting tree algorithm, this study established a random forest retrieval model (RF) and an extreme gradient boosting tree retrieval model (
Jiangtao Li, Yuanhong Guan, Qifeng Lu, Yansong Bao, Chunqiang Wu, Chaofan Xu   +5 more
doaj   +1 more source

The Formation of Disk Galaxies [PDF]

, 1996
We present a scenario for the formation of disks which explains not only the properties of normal galaxies, but the properties of the population of low surface brightness galaxies (LSBs) as well.
Babul A., Bingelli B., Bottema R., Bower R. J., Catelan P., Catelan P., Combes F., Combes F., David N. Spergel, Davies J. I., Davies J. I., de Blok W. J. G., de Jong R. S., Efstathiou G., F. J. Summers, Fall S. M., Gallagher J. S., Gnedin O., Julianne J. Dalcanton, Kauffmann G., Koo D. C., Lacey C., Lacey C., McGaugh S. S., Mestel L., Navarro J. F., Ostriker J. P., Persic M., Pfenniger D., Pfenniger D., Pfenniger D., Phillipps S., Press W. H., Quinn T., Tully R. B., van der Kruit P. C., Zwaan M. A.   +36 more
core   +3 more sources

CHANDRA X-Ray Observations of A119: Cold Fronts and a Shock in an Evolved Off-axis Merger

The Astrophysical Journal, 2023
We present Chandra X-ray observations of the dynamically complex galaxy cluster A119 ( z = 0.044). A119 is host to two narrow-angle-tail (NAT) radio sources (0053-015 and 0053-016), whose tails are oriented parallel to each other, despite orthogonally ...
Courtney B. Watson, Elizabeth L. Blanton, Scott W. Randall, Craig L. Sarazin, Arnab Sarkar, John A. ZuHone, E. M. Douglass   +6 more
doaj   +1 more source

Normal Globular Cluster Systems in Massive Low Surface Brightness Galaxies [PDF]

, 2007
We present the results of a study of the globular cluster systems of 6 massive spiral galaxies, originally cataloged as low surface brightness galaxies but here shown to span a wide range of central surface brightness values, including two intermediate ...
Andrés Jordán, Ashman K. M. & Zepf S. E., Barmby P., Blakeslee J. P., Brodie J. P. & Larsen S. S., Daniela Villegas, de Blok W. J. G., de Blok W. J. G. & van der Hulst J. M., Drinkwater M. J., Galaz G., Galaz G., Harris W. E. & van den Bergh S., Jedrzejewski R. I., Kissler-Patig M., Koekemoer A. M., Kundu A. & Whitmore B. C., Markus Kissler-Patig, Martin Zwaan, McLaughlin D. E., McLaughlin D. E. & Fall S. M., Mo H. J., Nelder J. A. & Mead R., Nilson P., Paul Goudfrooij, Sérsic J. L., van den Hoek L. B., Zwaan M. A.   +26 more
core   +1 more source