Results 81 to 90 of about 219,358 (289)

The Formation and Evolution of Planetary Systems: Description of the Spitzer Legacy Science Database [PDF]

open access: yes, 2008
We present the science database produced by the Formation and Evolution of Planetary Systems (FEPS) Spitzer Legacy program. Data reduction and validation procedures for the IRAC, MIPS, and IRS instruments are described in detail.
Bouwman, Jeroen   +8 more
core   +2 more sources

JHKLM PHOTOMETRY: STANDARD SYSTEMS, PASSBANDS, AND INTRINSIC COLORS

open access: yes, 1988
The relations between colors of the JHKL systems of several observatories are examined, and linear relations are derived for transformation between the (J-K), (J-H), (H-K), and (K-L) colors in the different systems.
M. Bessell, J. Brett
semanticscholar   +1 more source

Sobre a Dosagem Fotométrica do Cobre em Águas

open access: yesBrazilian Archives of Biology and Technology, 2001
The author presents an analytic process for copper quantitative determination in mineral and potable waters, based in the reaction of the cation copper with sodium diethyl-dithio carbamate. Due to the presence of certain elements common in water, such as
Reinaldo Spitzner
doaj   +1 more source

New $ubvri$ photometry of 234 M33 star clusters [PDF]

open access: yes, 2013
This is the second paper of our series. In this paper, we present $UBVRI$ photometry for 234 star clusters in the field of M33. For most of these star clusters, there is photometry in only two bands in previous studies. The photometry of these star clusters is performed using archival images from the Local Group Galaxies Survey, which covers 0.8 deg$^2$
arxiv   +1 more source

Imaging and mapping the impact of clouds on skyglow with all-sky photometry [PDF]

open access: yesScientific Reports, 2017
Artificial skyglow is constantly growing on a global scale, with potential ecological consequences ranging up to affecting biodiversity. To understand these consequences, worldwide mapping of skyglow for all weather conditions is urgently required.
A. Jechow   +5 more
semanticscholar   +1 more source

The CALSPEC Stars P177D and P330E [PDF]

open access: yes, 2015
Multicolor photometric data are presented for the CALSPEC stars P177D and P330E. Together with previously published photometry for nine other CALSPEC standards, the photometric observations and synthetic photometry from HST/STIS spectrophotometry agree ...
Bohlin, Ralph C., Landolt, Arlo U.
core   +3 more sources

Photometry

open access: yesScience, 1927
Printed in Great Britain. ; Bibliography at end of each chapter. ; Mode of access: Internet.
openaire   +2 more sources

The Carnegie Supernova Project. I. Third Photometry Data Release of Low-redshift Type Ia Supernovae and Other White Dwarf Explosions [PDF]

open access: yes, 2017
We present final natural-system optical (ugriBV) and near-infrared (YJH) photometry of 134 supernovae (SNe) with probable white dwarf progenitors that were observed in 2004–2009 as part of the first stage of the Carnegie Supernova Project (CSP-I).
K. Krisciunas   +29 more
semanticscholar   +1 more source

Activation of Glutamatergic Neurons in the Supramammillary Nucleus Promotes the Recovery of Consciousness under Sevoflurane Anesthesia

open access: yesAdvanced Science, EarlyView.
Selective lesioning of SuM glutamatergic neurons promoted the induction of and delayed emergence from sevoflurane anesthesia and increased sevoflurane sensitivity. Optogenetic stimulation of SuM glutamatergic neurons or the SuM‐MS projection promoted behavioral arousal and cortical activation under steady‐state sevoflurane anesthesia and reduced the ...
Jiayan Li   +8 more
wiley   +1 more source

The Y-type Brown Dwarfs: Estimates of Mass and Age from New Astrometry, Homogenized Photometry, and Near-infrared Spectroscopy [PDF]

open access: yes, 2017
The survey of the mid-infrared sky by the Wide-field Infrared Survey Explorer (WISE) led to the discovery of extremely cold, low-mass brown dwarfs, classified as Y dwarfs, which extend the T class to lower temperatures.
S. Leggett   +4 more
semanticscholar   +1 more source

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