Results 21 to 30 of about 10,786,884 (386)

The Properties and Luminosity Function of Extremely Low Luminosity Galaxies [PDF]

The Astrophysical Journal, 2005
We examine a sample of low redshift (10 < d < 150 Mpc) galaxies including galaxies with r-band absolute magnitudes as faint as -12.5 (for h=1), selected from the Sloan Digital Sky Survey Data Release 2 (SDSS). The sample is unique in containing galaxies of extremely low luminosities in a wide range of environments, selected with uniform and well ...
Blanton, Michael R., Lupton, Robert H., Schlegel, David J., Strauss, Michael A., Brinkmann, J., Fukugita, Masataka, Loveday, Jon   +6 more
openaire   +2 more sources

Subaru High-z Exploration of Low-luminosity Quasars (SHELLQs). V. Quasar Luminosity Function and Contribution to Cosmic Reionization at z = 6 [PDF]

Astrophysical Journal, 2018
We present new measurements of the quasar luminosity function (LF) at z ∼ 6 over an unprecedentedly wide range of the rest-frame ultraviolet luminosity M1450 from −30 to −22 mag.
Y. Matsuoka, M. Strauss, N. Kashikawa, M. Onoue, K. Iwasawa, Ji-Jia Tang, Chien-Hsiu Lee, M. Imanishi, T. Nagao, M. Akiyama, N. Asami, J. Bosch, H. Furusawa, T. Goto, J. Gunn, Y. Harikane, H. Ikeda, T. Izumi, T. Kawaguchi, N. Kato, S. Kikuta, K. Kohno, Y. Komiyama, R. Lupton, T. Minezaki, S. Miyazaki, H. Murayama, M. Niida, A. Nishizawa, Akatoki Noboriguchi, M. Oguri, Y. Ono, M. Ouchi, P. Price, H. Sameshima, A. Schulze, H. Shirakata, J. Silverman, N. Sugiyama, Philip J. Tait, M. Takada, T. Takata, Masayuki Tanaka, Y. Toba, Y. Utsumi, Shiang‐Yu Wang, T. Yamashita   +46 more
semanticscholar   +1 more source

Luminosity Functions of Planetary Nebulae [PDF]

Symposium - International Astronomical Union, 1997
Planetary nebulae have recently been shown to be useful as standard candles (Ciardullo et al. 1989, ApJ, 339, 53; Jacoby 1989, ApJ, 339, 39). Distances to many galaxies have been determined by fitting a planetary nebula luminosity function (PNLF) to observations of the OIII 5007å line of PNe.
Marcelle Tremblay, Sun Kwok
openaire   +1 more source

Evolution of the AGN UV luminosity function from redshift 7.5 [PDF]

Monthly notices of the Royal Astronomical Society, 2018
Determinations of the ultraviolet (UV) luminosity function of active galactic nuclei (AGN) at high redshifts are important for constraining the AGN contribution to reionization and understanding the growth of supermassive black holes.
Girish Kulkarni, G. Worseck, J. Hennawi
semanticscholar   +1 more source

COLDz: Shape of the CO Luminosity Function at High Redshift and the Cold Gas History of the Universe [PDF]

Astrophysical Journal, 2018
We report the first detailed measurement of the shape of the CO luminosity function at high redshift, based on >320 hr of the NSF’s Karl G. Jansky Very Large Array (VLA) observations over an area of ∼60 arcmin2 taken as part of the CO Luminosity Density ...
D. Riechers, R. Pavesi, C. Sharon, J. Hodge, R. Decarli, F. Walter, C. Carilli, M. Aravena, E. D. Cunha, E. Daddi, M. Dickinson, I. Smail, P. Capak, R. Ivison, M. Sargent, N. Scoville, J. W. Cornell, Mpia, McMaster, Yale-NUS College, Leiden, -INAF, Nrao, Cambridge, D. Portales, Anu, C. Saclay, Noao, Durham, IPACCaltech, Eső, Edinburgh, Sussex, Caltech, ska   +34 more
semanticscholar   +1 more source

Joint Power Spectrum and Voxel Intensity Distribution Forecast on the CO Luminosity Function with COMAP [PDF]

Astrophysical Journal, 2018
We develop a framework for joint constraints on the CO luminosity function based on power spectra (PS) and voxel intensity distributions (VID) and apply this to simulations of CO Mapping Array Pathfinder (COMAP), a CO intensity mapping experiment.
H. Ihle, D. Chung, G. Stein, Mar Alvarez, J. Bond, P. Breysse, K. Cleary, H. Eriksen, M. K. Foss, J. Gundersen, S. Harper, N. Murray, H. Padmanabhan, M. Viero, I. Wehus   +14 more
semanticscholar   +1 more source

The Imprint of Cosmic Reionization on the Luminosity Function of Galaxies [PDF]

Astrophysical Journal, 2018
The (re)ionization of hydrogen in the early universe has a profound effect on the formation of the first galaxies: by raising the gas temperature and pressure, it prevents gas from cooling into small halos, thus affecting the abundance of present-day ...
S. Bose, A. Deason, C. Frenk
semanticscholar   +1 more source

The Radio Luminosity-risetime Function of Core-collapse Supernovae [PDF]

, 2020
We assemble a large set of 2–10 GHz radio flux density measurements and upper limits of 294 different supernovae (SNe), from the literature and our own and archival data. Only 31% of SNe were detected.
M. Bietenholz, N. Bartel, M. Argo, R. Dua, S. Ryder, A. Soderberg   +5 more
semanticscholar   +1 more source

The Hα Luminosity Function of Galaxies at z ∼ 4.5

The Astrophysical Journal, 2023
We present the H α luminosity function (LF) derived from a large sample of Lyman break galaxies at z ∼ 4.5 over the GOODS-South and North fields.
Victoria Bollo, Valentino González, Mauro Stefanon, Pascal A. Oesch, Rychard J. Bouwens, Renske Smit, Garth D. Illingworth, Ivo Labbé   +7 more
doaj   +1 more source

Evolution of Galaxy Luminosity Function and Luminosity Function by Density Environment at 0.03 [PDF]

, 2006
Using galaxy sample observed by the BATC large-field multi-color sky survey and galaxy data of SDSS in the overlapped fields, we study the dependence of the restframe $r$-band galaxy luminosity function on redshift and on large-scale environment.
Bolzonella M., Colless M., Efstathiou G., Ellis R. S., Jun Ma, Lifang Xia, Lumsden S. L., Xu Zhou, Yanbin Yang, Zhaoji Jiang, Zhou X.   +10 more
core   +2 more sources