Results 41 to 50 of about 1,819,617 (345)

Spectral and Photometric Studies of NGC 3516 in the Optical Range

Galaxies
This paper presents the results of the photometric and spectral monitoring of the galaxy NGC 3516, which is an active galactic nucleus (AGN) of type Sy 1.5 with a changing look.
Saule Shomshekova, Alexander Serebryanskiy, Ludmila Kondratyeva, Nazim Huseynov, Samira Rahimli, Vitaliy Kim, Laura Aktay, Yerlan Aimuratov   +7 more
doaj   +1 more source

Recombination Effects on Supernova Light Curves

, 2019
The light curves of type-II supernovae (SNe) are believed to be highly affected by recombination of hydrogen that takes place in their envelopes. In this work, we analytically investigate the transition from a fully ionized envelope to a partially ...
Faran, Tamar, Goldfriend, Tomer, Nakar, Ehud, Sari, Re'em   +3 more
core   +1 more source

UTM, a universal simulator for lightcurves of transiting systems [PDF]

, 2008
The Universal Transit Modeller (UTM) is a light-curve simulator for all kinds of transiting or eclipsing configurations between arbitrary numbers of several types of objects, which may be stars, planets, planetary moons, and planetary rings. Applications
Aigrain, Bonomo, Carpano, Carpano, Claret, Hans Deeg, Moutou, Moutou   +7 more
core   +1 more source

QSO historical light curves. [PDF]

The Astronomical Journal, 1973
Astronomy
openaire   +2 more sources

A Comparative Study of Cerebral Oxygenation During Exercise in Hemodialysis and Peritoneal Dialysis Patients

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Cognitive impairment and exercise intolerance are common in dialysis patients. Cerebral perfusion and oxygenation play a major role in both cognitive function and exercise execution; HD session per se aggravates cerebral ischemia in this population. This study aimed to compare cerebral oxygenation and perfusion at rest and in mild
Marieta P. Theodorakopoulou, Konstantina Dipla, Danai Faitatzidou, Fotini Iatridi, Areti Georgiou, Artemios Karagiannidis, Erasmia Sampani, Chrysostomos Dimitriadis, Aggelos Koutlas, Andreas Zafeiridis, Pantelis Sarafidis   +10 more
wiley   +1 more source

High accuracy & long timescale light curves

EPJ Web of Conferences, 2013
We present a theoretical analysis of the optical light curves (LCs) for short-period high-mass transiting extrasolar planet systems. Our method considers the primary transit, the secondary eclipse, and the overall phase shape of the LC between the ...
Hodgkin S., Mislis D.
doaj   +1 more source

Periodic variable stars in CoRoT field LRa02 observed with BEST II [PDF]

, 2009
The Berlin Exoplanet Search Telescope II (BEST II) is a small wide field-of-view photometric survey telescope system located at the Observatorio Cerro Armazones, Chile.
A. Erikson, Ahnert, Alard, Fernandez-Figueroa, H. Rauer, Kabath, Kabath, Kabath, Karoff, Kaye, M. Murphy, Maceroni, P. Eigmüller, P. Kabath, Peraiah, Pojmanski, Poretti, Pál, R. Chini, R. Lemke, R. Titz, Rauer, Rauer, Schwarzenberg-Czerny, Skrutskie, Stetson, Sz. Csizmadia, T. Fruth, T. Pasternacki, Tamuz, Udalski, Zhang   +31 more
core   +2 more sources

Multiband embeddings of light curves

Astronomy & Astrophysics
In this work, we propose a novel ensemble of recurrent neural networks (RNNs) that considers the multiband and non-uniform cadence without having to compute complex features. Our proposed model consists of an ensemble of RNNs, which do not require the entire light curve to perform inference, making the inference process simpler. The ensemble is able to
I. Becker, P. Protopapas, M. Catelan, K. Pichara   +3 more
openaire   +2 more sources

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source

ATLAS OF LIGHT CURVES OF FAINT MIRA-TYPE STARS. STATISTICAL RELATIONS BETWEEN THE CHARACTERISTICS OF SMOOTHED PHASE LIGHT CURVES

Odessa Astronomical Publications, 2010
We propose a set of the photometric parameters which could be useful for the classiffication of the pulsating Mira-type stars and related objects and determination of the EAGB and TPAGB stages of the stellar evolution.
L. S. Kudashkina, I. L. Andronov
doaj   +1 more source