Show simple item record

dc.contributor.authorGonzález-Egea, Elena
dc.contributor.authorRaddi, Roberto
dc.contributor.authorKoester, Detlev
dc.contributor.authorRogers, Laura K.
dc.contributor.authorMarocco, Federico
dc.contributor.authorCooper, William J.
dc.contributor.authorBeamín, Juan Carlos
dc.contributor.authorBurningham, Ben
dc.contributor.authorDay-Jones, Avril C.
dc.contributor.authorForbrich, Jan
dc.contributor.authorPinfield, David J.
dc.date.accessioned2021-03-03T16:05:54Z
dc.date.available2021-03-03T16:05:54Z
dc.date.issued2021-03-01
dc.identifier10.1093/mnras/staa3836
dc.identifier.issn00358711
dc.identifier.urihttps://hdl.handle.net/20.500.12728/8651
dc.description.abstractSpectroscopic observations of white dwarfs reveal that many of them are polluted by exoplanetary material, whose bulk composition can be uniquely probed this way. We present a spectroscopic and photometric analysis of the DA white dwarf WDJ181417.84-735459.83, an object originally identified to have a strong infrared (IR) excess in the 2MASS and WISE catalogues that we confirmed to be intrinsic to the white dwarf, and likely corresponding to the emission of a dusty disc around the star. The finding of Ca, Fe, and Mg absorption lines in two X-SHOOTER spectra of the white dwarf, taken 8 years apart, is further evidence of accretion from a dusty disc. We do not report variability in the absorption lines between these two spectra. Fitting a blackbody model to the IR excess gives a temperature of 910 ± 50 K. We have estimated a total accretion flux from the spectroscopic metal lines of |M}| = 1.784 × 10{9},g s-1.es_ES
dc.language.isoenes_ES
dc.publisherOxford University Presses_ES
dc.subjectaccretion, accretion discses_ES
dc.subjectstars: white dwarfses_ES
dc.titleSerendipitous discovery of a dusty disc around WDJ181417.84-735459.83es_ES
dc.typeArticlees_ES


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record