Results 41 to 50 of about 2,016,170 (332)

Enhancement of single upconversion nanoparticle imaging by topologically segregated core-shell structure with inward energy migration

Nature Communications, 2022
Manipulating topological arrangement is a powerful tool for tuning the energy migration in molecular systems and inorganic materials. Here, authors synthesize NaErF4 and NaYbF4 upconversion nanoparticles with different architectures and demonstrate ...
Yanxin Zhang, Rongrong Wen, Jialing Hu, Daoming Guan, Xiaochen Qiu, Yunxiang Zhang, Daniel S. Kohane, Qian Liu   +7 more
doaj   +1 more source

The Hubble diagram for red magnitudes of bright cluster galaxies [PDF]

International Astronomical Union Colloquium, 1977
Nous présentons le diagramme de Hubble des amas brillants de galaxies.
J. Kristian, A. R. Sandage, J. A. Westphal   +2 more
openaire   +1 more source

A New Pivot Algorithm for Star Identification [PDF]

Journal of Astronomy and Space Sciences, 2014
In this study, a star identification algorithm which utilizes pivot patterns instead of apparent magnitude information was developed. The new star identification algorithm consists of two steps of recognition process.
Jakyoung Nah, Yu Yi, Yong Ha Kim
doaj   +1 more source

Discovery of New Dwarf Galaxy near The Isolated Spiral Galaxy NGC 6503 [PDF]

, 2015
We report the discovery of a new dwarf galaxy (NGC6503-d1) during the Subaru extended ultraviolet (XUV) disk survey. It is a likely companion of the spiral galaxy NGC6503.
Boissier, Samuel, Boselli, Alessandro, Bouquin, Alexandre Y. K., de Paz, Armando Gil, Imanishi, Masatoshi, Koda, Jin, Komiyama, Yutaka, Madore, Barry F., Meyer, Jennifer Donovan, Thilker, David A., Yagi, Masafumi   +10 more
core   +5 more sources

The Survey for Ionization in Neutral Gas Galaxies: I. Description and Initial Results [PDF]

, 2006
We introduce the Survey for Ionization in Neutral Gas Galaxies (SINGG), a census of star formation in HI-selected galaxies. The survey consists of H-alpha and R-band imaging of a sample of 468 galaxies selected from the HI Parkes All Sky Survey (HIPASS).
B. Koribalski, D. J. Hanish, E. V. Ryan‐Weber, Fosbury R. A. E., Garrison R. F., Gerhardt R. Meurer, H. C. Ferguson, Hawarden T. G., Hernquist L., J. Bland‐Hawthorn, J. C. Lee, J. Werk, K. C. Freeman, L. Staveley‐Smith, M. A. Dopita, M. A. Zwaan, M. E. Putman, M. J. Drinkwater, M. Meyer, M. S. Oey, M. T. Doyle, Maddox S. J., P. M. Knezek, R. C. Kennicutt, Jr., R. C. Smith, R. L. Webster, Smith R. C., Staveley-Smith L., T. M. Heckman, V. A. Kilborn, Veron-Cetty M.-P.   +30 more
core   +2 more sources

The association of brightness with number/duration in human newborns.

PLoS ONE, 2019
Human neonates spontaneously associate changes in magnitude across the dimensions of number, length, and duration. Do these particular associations generalize to other pairs of magnitudes in the same way at birth, or do they reflect an early ...
Cory D Bonn, Maria-Eirini Netskou, Arlette Streri, Maria Dolores de Hevia   +3 more
doaj   +1 more source

Bump Morphology of the CMAGIC Diagram

The Astrophysical Journal, 2023
We apply the color–magnitude intercept calibration method (CMAGIC) to the Nearby Supernova Factory SNe Ia spectrophotometric data set. The currently existing CMAGIC parameters are the slope and intercept of a straight line fit to the linear region in the
L. Aldoroty, L. Wang, P. Hoeflich, J. Yang, N. Suntzeff, G. Aldering, P. Antilogus, C. Aragon, S. Bailey, C. Baltay, S. Bongard, K. Boone, C. Buton, Y. Copin, S. Dixon, D. Fouchez, E. Gangler, R. Gupta, B. Hayden, Mitchell Karmen, A. G. Kim, M. Kowalski, D. Küsters, P.-F. Léget, F. Mondon, J. Nordin, R. Pain, E. Pecontal, R. Pereira, S. Perlmutter, K. A. Ponder, D. Rabinowitz, M. Rigault, D. Rubin, K. Runge, C. Saunders, G. Smadja, N. Suzuki, C. Tao, R. C. Thomas, M. Vincenzi   +40 more
doaj   +1 more source

New low surface brightness dwarf galaxies in the Centaurus group [PDF]

, 2016
We conducted an extensive CCD search for faint, unresolved dwarf galaxies of very low surface brightness in the whole Centaurus group region encompassing the Cen A and M 83 subgroups lying at a distance of roughly 4 and 5 Mpc, respectively. The aim is to
O. Muller, H. Jerjen, B. Binggeli
semanticscholar   +1 more source

The early-type dwarf galaxy population of the Centaurus cluster

, 2009
We present a photometric study of the early-type dwarf galaxy population of the Centaurus cluster, aiming at investigating the galaxy luminosity function (LF) and galaxy scaling relations down to the regime of galaxies with M_V~-10 mag. On deep VLT/FORS1
Abell, Adami, Bautz, Bekki, Bender, Bender, Bertin, Binggeli, Boselli, Chiboucas, Chiboucas, Chilingarian, Choi, Churazov, Côté, da Costa, da Costa, Dabringhausen, de Vaucouleurs, Drinkwater, Faber, Ferrarese, Freedman, Fukugita, Furusho, Gallagher, Gallazzi, Gavazzi, Gilmore, Graham, Graham, Graham, Hilker, Hilker, I. Misgeld, Infante, Janz, Jenkins, Jerjen, Klypin, Kodama, Kormendy, Kormendy, Lisker, Lucey, M. Hilker, Mahdavi, Martin, Martin, McConnachie, McConnachie, Mei, Mieske, Mieske, Mieske, Mieske, Mieske, Misgeld, Moore, Peng, Penny, Press, Pritchet, Rines, S. Mieske, Schechter, Schlegel, Secker, Stein, Tonry, Trentham, Trentham, Visvanathan, Young, Zucker   +74 more
core   +1 more source

Maximum Brightness and Post-Maximum Decline of Light Curves of SN~Ia: A Comparison of Theory and Observations [PDF]

, 1996
We compare the observed correlations between the maximum brightness, postmaximum decline rate and color at maximum light of Type Ia supernovae (SN Ia) with model predictions.
Alexei Khokhlov, Barbon R., Barbon R., Cristiani S., Hoflich P., J. Craig Wheeler, Khokhlov A., Khokhlov A., Mario Hamuy, Mark M. Phillips, Muller E., Nicolas B. Suntzeff, Peter Höflich, Pskovskii Y. P., Pskovskii Y. P., Tully R. B.   +15 more
core   +2 more sources