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  Discovery of an Extended Ultraviolet Disk in the Nearby Galaxy NGC 4625

Gil de Paz, A., Madore, B., Boissier, S., Swaters, R., Popescu, C. C., Tuffs, R., et al. (2005). Discovery of an Extended Ultraviolet Disk in the Nearby Galaxy NGC 4625. The Astrophysical Journal, 627(1, Part 2), L29-L32.

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Datensatz-Permalink: https://hdl.handle.net/11858/00-001M-0000-0011-88AA-F Versions-Permalink: https://hdl.handle.net/11858/00-001M-0000-0011-88AB-D
Genre: Zeitschriftenartikel

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 Urheber:
Gil de Paz, A.1, Autor
Madore, B.F.1, Autor
Boissier, S.1, Autor
Swaters, R.1, Autor
Popescu, Cristina C.2, Autor           
Tuffs, Richard3, Autor           
Sheth, K.1, Autor
Kennicutt, Jr.1, Autor
Bianchi, L.1, Autor
Thilker, D.1, Autor
Martin, D. C.1, Autor
Affiliations:
1Observatories of the Carnegie Institution of Washington, 813 Santa Barbara Street, Pasadena, CA 91101. Department of Astronomy, University of Maryland, College Park, MD 20742-2421 Spitzer Science Center, California Institute of Technology, MC 220-6, 1200 East California Boulevard, Pasadena, CA 91125. Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721. Center for Astrophysical Sciences, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218. California Institute of Technology, MC 405-47, 1200 East California Boulevard, Pasadena, CA 91125., ou_persistent22              
2Prof. Heinrich J. Völk, Emeriti, MPI for Nuclear Physics, Max Planck Society, ou_907548              
3Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society, ou_904550              

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Schlagwörter: galaxies: formationgalaxies: individual (NGC 4625)galaxies: star clustersultraviolet: galaxies
 Zusammenfassung: Recent far-UV (FUV) and near-UV (NUV) observations of the nearby galaxy NGC 4625 made by the Galaxy Evolution Explorer (GALEX) show the presence of an extended UV disk reaching to 4 times the optical radius of the galaxy. The UV-to-optical colors suggest that the bulk of the stars in the disk of NGC 4625 are currently being formed, providing a unique opportunity to study today the physics of star formation under conditions similar to those when the normal disks of spiral galaxies like the Milky Way first formed. In the case of NGC 4625, the star formation in the extended disk is likely to be triggered by interaction with NGC 4618 and possibly also with the newly discovered galaxy NGC 4625A. The positions of the FUV complexes in the extended disk coincide with peaks in the H I distribution. The masses of these complexes are in the range 103104 M, with their H emission (when present) being dominated by ionization from single stars.

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Sprache(n): eng - English
 Datum: 2005-07-01
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: eDoc: 246404
 Art des Abschluß: -

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Titel: The Astrophysical Journal
  Alternativer Titel : ApJ
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: 627 (1, Part 2) Artikelnummer: - Start- / Endseite: L29 - L32 Identifikator: -