Show simple item record

dc.contributor.authorCatalan, S.
dc.contributor.authorNapiwotzki, R.
dc.contributor.authorHodgkin, S.T.
dc.contributor.authorPinfield, D.J.
dc.contributor.authorHornillos, D.C.
dc.date.accessioned2011-12-19T16:02:10Z
dc.date.available2011-12-19T16:02:10Z
dc.date.issued2010
dc.identifier.citationCatalan , S , Napiwotzki , R , Hodgkin , S T , Pinfield , D J & Hornillos , D C 2010 , Search for the coolest white dwarfs in the Galaxy . in AIP Conference Proceedings 17th European White Dwarf Workshop 1273 (1) . American Institute of Physics (AIP) , pp. 174-179 .
dc.identifier.otherdspace: 2299/5563
dc.identifier.urihttp://hdl.handle.net/2299/7383
dc.description"Copyright 2011 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics."
dc.description.abstractA number of so-called ultra-cool white dwarfs have been detected in different surveys so far. However, based on anecdotal evidence it is believed that most or all of these ultra-cool white dwarfs are low-mass products of binary evolution and thus not representative for the oldest white dwarfs. Their low mass causes relatively high luminosity making them the first cool white dwarfs detected in relatively shallow surveys. Deeper observations are needed for the oldest, high mass white dwarfs with the longest cooling times. We report results of an ongoing project that combines deep IR and optical data. This combination plus proper motion information will allow an unambiguous identification of very cool white dwarfs, since the spectral energy distributions are very different from other types of stellar objects. The atmospheric parameters that can be derived from the spectral energy distributions together with the propermotions inferred from the IR data can be used to construct the white dwarf luminosity functions for the thick disc and halo populations. From these we will be able to test the early star formation history and initial mass function of the first stellar populations.en
dc.format.extent363884
dc.language.isoeng
dc.publisherAmerican Institute of Physics (AIP)
dc.relation.ispartofAIP Conference Proceedings 17th European White Dwarf Workshop 1273 (1)
dc.subjectstars: white dwarfs
dc.titleSearch for the coolest white dwarfs in the Galaxyen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionScience & Technology Research Institute
dc.contributor.institutionCentre for Astrophysics Research
dc.contributor.institutionSchool of Physics, Engineering & Computer Science
dc.contributor.institutionDepartment of Physics, Astronomy and Mathematics
rioxxterms.typeOther
herts.preservation.rarelyaccessedtrue


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record