Results 21 to 30 of about 2,408 (150)

Frequency-dependent time-delays for strong outbursts in selected blazars from the Metsähovi and the University of Michigan Radio Astronomy Observatory monitoring databases – I. [PDF]

Monthly Notices of the Royal Astronomical Society, 2006
The combined data of the University of Michigan Radio Astronomy Observatory and Metsahovi Radio Observatory provide us with radio light curves for active galactic nuclei monitored by both observatories from 4.8 to 37 GHz covering time-intervals up to ∼25 yr.
Pyatunina, T. B., Kudryavtseva, N. A., Gabuzda, Denise, Jorstad, S. G., Aller, M. F., Aller, H. D., Teräsranta, H.   +6 more
openaire   +2 more sources

SpecTE: Parameter Estimation for LAMOST Low-resolution Stellar Spectra Based on Denoising Pretraining

The Astrophysical Journal Supplement Series
This paper proposes a spectral transformer encoder (SpecTE) model based on a denoising pretraining technique, and applies it to estimating radial velocity (RV) and three stellar atmospheric physical parameters together with 15 chemical element abundances
Xirong Zhao, Xiangru Li, Hui Li, Xianqi Liu   +3 more
doaj   +1 more source

Big Data in Astronomy: Surveys, Catalogs, Databases and Archives

Communications of the Byurakan Astrophysical Observatory, 2020
We present the modern situation in astronomy, where Big Data coming from the Universe put new tasks for catalogizing, storage, archiving, analysis and usage of the scientific information. The two major characteristics of modern astronomy are multiwavelength (MW) studies (from γ-ray to radio, as well as multi-messenger studies, using also neutrinos ...
openaire   +1 more source

The NASA Ames PAH IR Spectroscopic Database: Computational Version 4.00, Software Tools, Website, and Documentation

The Astrophysical Journal Supplement Series
Version 4.00 of the library of computed spectra of the NASA Ames PAH IR Spectroscopic Database (PAHdb) includes an expanded set of polycyclic aromatic hydrocarbon (PAH) spectra, totaling 10,749, calculated using the harmonic approximation and a basis set
A. Ricca, C. Boersma, A. Maragkoudakis, J. E. Roser, Matthew J. Shannon, L. J. Allamandola, Charles W. Bauschlicher Jr.   +6 more
doaj   +1 more source

The JCMT Legacy Release: SCUBA-2 850 μm Coadds and Catalogs

The Astrophysical Journal Supplement Series
We present the James Clerk Maxwell Telescope (JCMT) 850 μ m Legacy Release, containing uniformly reduced, coadded tiles, and catalogs of detected emission, for the 850 μ m data from all Submillimetre Common User Bolometer Array 2 (SCUBA-2) observations ...
Sarah F. Graves, Jessica T. Dempsey, Graham S. Bell, David S. Berry, Iain M. Coulson, Malcolm J. Currie, Per Friberg, Tim Jenness, Doug Johnstone, Junhao Liu, Steven Mairs, Harriet A. L. Parsons, Harold Pena, Mark G. Rawlings, Holly S. Thomas, Jan G. A. Wouterloot   +15 more
doaj   +1 more source

Firmamento: A Multimessenger Astronomy Tool for Citizen and Professional Scientists

The Astronomical Journal
Firmamento ( https://firmamento.hosting.nyu.edu ) is a new-concept, web-based, and mobile-friendly data analysis tool dedicated to multifrequency/multimessenger emitters, as exemplified by blazars.
Dhurba Tripathi, Paolo Giommi, Adriano Di Giovanni, Rawdha R. Almansoori, Nouf Al Hamly, Francesco Arneodo, Andrea V. Macciò, Goffredo Puccetti, Ulisses Barres de Almeida, Carlos Brandt, Simonetta Di Pippo, Michele Doro, Davit Israyelyan, A. M. T. Pollock, Narek Sahakyan   +14 more
doaj   +1 more source

Safeguarding Old and New Journal Tables for the VO: Status for Extragalactic and Radio Data

Data Science Journal, 2009
Independent of established data centers, and partly for my own research, since 1989 I have been collecting the tabular data from over 2600 articles concerned with radio sources and extragalactic objects in general. Optical character recognition (OCR) was
Heinz Andernach
doaj   +1 more source

The Young Supernova Experiment Data Release 1 (YSE DR1): Light Curves and Photometric Classification of 1975 Supernovae

The Astrophysical Journal Supplement Series, 2023
We present the Young Supernova Experiment Data Release 1 (YSE DR1), comprised of processed multicolor PanSTARRS1 griz and Zwicky Transient Facility (ZTF) gr photometry of 1975 transients with host–galaxy associations, redshifts, spectroscopic and/or ...
P. D. Aleo, K. Malanchev, S. Sharief, D. O. Jones, G. Narayan, R. J. Foley, V. A. Villar, C. R. Angus, V. F. Baldassare, M. J. Bustamante-Rosell, D. Chatterjee, C. Cold, D. A. Coulter, K. W. Davis, S. Dhawan, M. R. Drout, A. Engel, K. D. French, A. Gagliano, C. Gall, J. Hjorth, M. E. Huber, W. V. Jacobson-Galán, C. D. Kilpatrick, D. Langeroodi, P. Macias, K. S. Mandel, R. Margutti, F. Matasić, P. McGill, J. D. R. Pierel, E. Ramirez-Ruiz, C. L. Ransome, C. Rojas-Bravo, M. R. Siebert, K. W. Smith, K. M. de Soto, M. C. Stroh, S. Tinyanont, K. Taggart, S. M. Ward, R. Wojtak, K. Auchettl, P. K. Blanchard, T. J. L. de Boer, B. M. Boyd, C. M. Carroll, K. C. Chambers, L. DeMarchi, G. Dimitriadis, S. A. Dodd, N. Earl, D. Farias, H. Gao, S. Gomez, M. Grayling, C. Grillo, E. E. Hayes, T. Hung, L. Izzo, N. Khetan, A. N. Kolborg, J. A. P. Law-Smith, N. LeBaron, C.-C. Lin, Y. Luo, E. A. Magnier, D. Matthews, B. Mockler, A. J. G. O’Grady, Y.-C. Pan, C. A. Politsch, S. I. Raimundo, A. Rest, R. Ridden-Harper, A. Sarangi, S. L. Schrøder, S. J. Smartt, G. Terreran, S. Thorp, J. Vazquez, R. J. Wainscoat, Q. Wang, A. R. Wasserman, S. K. Yadavalli, R. Yarza, Y. Zenati, Young Supernova Experiment   +87 more
doaj   +1 more source

iSTAR First Light: Characterizing Astronomy Education Research Dissertations In The iSTAR Database

Journal of Astronomy & Earth Sciences Education (JAESE), 2016
There is widespread interest among discipline-based science education researchers to situate their research in the existing scholarly literature base.  Unfortunately, traditional approaches to conducting a thorough literature review are unduly hindered in astronomy education research as the venues in which scholarship is reported are fragmented and ...
Slater, Stephanie J., Tatge, Coty B., Bretones, Paulo S., Slater, Timothy F., Schleigh, Sharon P., McKinnon, David H., Heyer, Inge   +6 more
openaire   +3 more sources

Catalog of Planetary Nebulae Detected by GALEX and Corollary Optical Surveys

The Astrophysical Journal Supplement Series, 2023
Planetary nebulae (PNs) consist of an ionized envelope surrounding a hot central star (CSPN) that emits mostly at ultraviolet (UV) wavelengths. UV observations, therefore, provide important information on both the CSPN and the nebula. We have matched the
M. A. Gómez-Muñoz, L. Bianchi, A. Manchado   +2 more
doaj   +1 more source