Home > Publications database > The time-variable ultraviolet sky: Active galactic nuclei, stars, and white dwarfs > print

001     620266
005     20250115142531.0
024 7 _ |a Buehler:2024qgh
|2 INSPIRETeX
024 7 _ |a inspire:2789500
|2 inspire
024 7 _ |a arXiv:2405.14269
|2 arXiv
024 7 _ |a 10.3204/PUBDB-2025-00100
|2 datacite_doi
037 _ _ |a PUBDB-2025-00100
041 _ _ |a English
082 _ _ |a 520
088 _ _ |a arXiv:2405.14269
|2 arXiv
100 1 _ |a Bühler, Rolf
|0 P:(DE-H253)PIP1018733
|b 0
|e Corresponding author
|u desy
245 _ _ |a The time-variable ultraviolet sky: Active galactic nuclei, stars, and white dwarfs
260 _ _ |c 2024
336 7 _ |a Preprint
|b preprint
|m preprint
|0 PUB:(DE-HGF)25
|s 1736503122_1847506
|2 PUB:(DE-HGF)
336 7 _ |a WORKING_PAPER
|2 ORCID
336 7 _ |a Electronic Article
|0 28
|2 EndNote
336 7 _ |a preprint
|2 DRIVER
336 7 _ |a ARTICLE
|2 BibTeX
336 7 _ |a Output Types/Working Paper
|2 DataCite
500 _ _ |a A&A 687, A313 (2024). Accepted for publication in Astronomy and Astrophysics. The 1UVA catalog will be made available via the Strasbourg astronomical Data Center (CDS). The article has 13 pages and contains 11 figures
520 _ _ |a Here, we present the first catalog of Ultraviolet time-VAriable sources (1UVA). We describe a new analysis pipeline called VAriable Source Clustering Analysis (VASCA). We applied this pipeline to 10 yr of data from the Galaxy Evolution Explorer (GALEX) satellite. We analyzed a sky area 302 deg2, and detected 4,202 time-variable ultraviolet (UV) sources. We cross-correlated these sources with multi-frequency data from the Gaia satellite and the Set of Identifications, Measurements and Bibliography for Astronomical Data (SIMBAD) database, finding an association for 3,655 sources. The source sample was dominated by active galactic nuclei (≈73%) and stars (≈24%). We examined the UV and multi-frequency properties of these sources, focusing on the stellar population. We found UV variability for four white dwarfs (WDs). One of them, WD J004917.14–252556.81, was recently found to be the most massive pulsating WD. Its spectral energy distribution shows no sign of a stellar companion. The observed flux variability was unexpected and difficult to explain.Key words: catalogs / surveys / Hertzsprung-Russell and C-M diagrams / white dwarfs / quasars: general★ The catalog is available at the CDS via anonymous ftp to cdsarc.cds.unistra.fr (130.79.128.5) or via https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/687/A313
536 _ _ |a 613 - Matter and Radiation from the Universe (POF4-613)
|0 G:(DE-HGF)POF4-613
|c POF4-613
|f POF IV
|x 0
588 _ _ |a Dataset connected to CrossRef, INSPIRE, Journals: bib-pubdb1.desy.de
693 _ _ |0 EXP:(DE-H253)CTA-20150101
|5 EXP:(DE-H253)CTA-20150101
|e Cherenkov Telescope Array
|x 0
700 1 _ |a Schliwinski, Julian
|0 P:(DE-H253)PIP1091245
|b 1
856 4 _ |y OpenAccess
|u https://bib-pubdb1.desy.de/record/620266/files/2405.14269v1.pdf
856 4 _ |y OpenAccess
|x pdfa
|u https://bib-pubdb1.desy.de/record/620266/files/2405.14269v1.pdf?subformat=pdfa
909 C O |o oai:bib-pubdb1.desy.de:620266
|p openaire
|p open_access
|p VDB
|p driver
|p dnbdelivery
910 1 _ |a Deutsches Elektronen-Synchrotron
|0 I:(DE-588b)2008985-5
|k DESY
|b 0
|6 P:(DE-H253)PIP1018733
910 1 _ |a External Institute
|0 I:(DE-HGF)0
|k Extern
|b 1
|6 P:(DE-H253)PIP1091245
913 1 _ |a DE-HGF
|b Forschungsbereich Materie
|l Matter and the Universe
|1 G:(DE-HGF)POF4-610
|0 G:(DE-HGF)POF4-613
|3 G:(DE-HGF)POF4
|2 G:(DE-HGF)POF4-600
|4 G:(DE-HGF)POF
|v Matter and Radiation from the Universe
|x 0
914 1 _ |y 2024
915 _ _ |a OpenAccess
|0 StatID:(DE-HGF)0510
|2 StatID
915 _ _ |a Creative Commons Attribution CC BY 4.0
|0 LIC:(DE-HGF)CCBY4
|2 HGFVOC
915 _ _ |a Published
|0 StatID:(DE-HGF)0580
|2 StatID
920 1 _ |0 I:(DE-H253)Z_GA-20210408
|k Z_GA
|l Gammaastronomie
|x 0
980 _ _ |a preprint
980 _ _ |a VDB
980 _ _ |a UNRESTRICTED
980 _ _ |a I:(DE-H253)Z_GA-20210408
980 1 _ |a FullTexts

LibraryCollectionCLSMajorCLSMinorLanguageAuthor
Marc 21