Results 11 to 20 of about 2,259,814 (348)

The Light Curve of S Andromedae [PDF]

open access: yesThe Astronomical Journal, 2002
Historical observations of S And, in combination with the color versus rate-of-decline relationship for well-observed SN 1991bg-like supernovae, are used to estimate a rate of decline Delta m15 (B) = 2.21 and an intrinsic color at maximum [B(0) - V(0)]o =
Bergh, Sidney van den
core   +7 more sources

Multiwavelength light curve parameters of Cepheid variables [PDF]

open access: yesEPJ Web of Conferences, 2017
We present a comparative analysis of theoretical and observed light curves of Cepheid variables using Fourier decomposition. The theoretical light curves at multiple wavelengths are generated using stellar pulsation models for chemical compositions ...
Bhardwaj Anupam   +5 more
doaj   +2 more sources

TESS–Gaia Light Curve: A PSF-based TESS FFI Light-curve Product

open access: yesThe Astronomical Journal, 2023
The Transiting Exoplanet Survey Satellite (TESS) is continuing its second extended mission after 55 sectors of observations. TESS publishes full-frame images (FFIs) at a cadence of 1800, 600, or 200 s, allowing light curves to be extracted for stars ...
Te Han, Timothy D. Brandt
doaj   +3 more sources

A Panoply of Cepheid Light Curve Templates [PDF]

open access: yesThe Astronomical Journal, 2009
We have generated accurate V and I template light curves using a combination of Fourier decomposition and principal component analysis for a large sample of Cepheid light curves.
Dalcanton, Julianne J.   +3 more
core   +6 more sources

Modeling the light curve of the transient SCP06F6 [PDF]

open access: yesThe Astrophysical Journal, 2009
We consider simple models based on core collapse or pair-formation supernovae to account for the light curve of the transient SCP06F6. A radioactive decay diffusion model provides estimates of the mass of the required radioactive nickel and the ejecta as
Agnoletto   +30 more
core   +5 more sources

Analysis and characterization of X-ray flare of Mkn 421 using XMM-Newton observation 0658801301

open access: yesBibechana, 2023
This research work was carried out to analyze the X-ray flares in Blazar Mkn 421 using data from XMM-Newton observation (Observation ID: 0658801301) that lasted for 8 hours.
Rajendra Neupane, Niraj Dhital
doaj   +3 more sources

Classification of Low Earth Orbit (LEO) Resident Space Objects’ (RSO) Light Curves Using a Support Vector Machine (SVM) and Long Short-Term Memory (LSTM)

open access: yesSensors, 2023
Light curves are plots of brightness measured over time. In the field of Space Situational Awareness (SSA), light curves of Resident Space Objects (RSOs) can be utilized to infer information about an RSO such as the type of object, its attitude, and its ...
Randa Qashoa, Regina Lee
doaj   +1 more source

Diversity of Kilonova Light Curves [PDF]

open access: yesThe Astrophysical Journal, 2020
Abstract We perform radiative transfer simulations for kilonova in various situations, including the cases of prompt collapse to a black hole from neutron star mergers, high-velocity ejecta possibly accelerated by magnetars, and a black hole–neutron star merger.
Masaomi Tanaka   +3 more
openaire   +4 more sources

CCD Photometry of Contact Binary WZ Cephei [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2008
We present the full BVR light curves and five times of minima of WZ Cep to provides a complete photometric solution and to confirm the long term variation of the light curves.
Woo-Baik Lee   +2 more
doaj   +1 more source

Light on curved backgrounds [PDF]

open access: yesPhysical Review D, 2015
34 pages, 10 ...
S. Nelson   +2 more
openaire   +3 more sources

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