Language:

Testing the white dwarf mass–radius relationship with eclipsing binaries

Monthly notices of the Royal Astronomical Society, 2017-10, Vol.470 (4), p.4473-4492 [Peer Reviewed Journal]

2017 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society 2017 ;info:eu-repo/semantics/openAccess ;ISSN: 0035-8711 ;EISSN: 1365-2966 ;DOI: 10.1093/mnras/stx1522

Digital Resources/Online E-Resources

Citations Cited by

Actions
1. Add to My Research
2. Remove from My Research
3. E-mail
4. Print
5. Permalink
6. Citation
7. EasyBib
8. EndNote
9. RefWorks
10. Delicious
11. Export RIS
12. Export BibTeX

Title:
Testing the white dwarf mass–radius relationship with eclipsing binaries
Author: Parsons, S. G ; Gänsicke, B. T ; Marsh, T. R ; Ashley, R. P ; Bours, M. C. P ; Breedt, E ; Burleigh, M. R ; Copperwheat, C. M ; Dhillon, V. S ; Green, M ; Hardy, L. K ; Hermes, J. J ; Irawati, P ; Kerry, P ; Littlefair, S. P ; McAllister, M. J ; Rattanasoon, S ; Rebassa-Mansergas, A ; Sahman, D. I ; Schreiber, M. R
Subjects: Aeronàutica i espai ; binaries: eclipsing ; Estels nans ; stars: fundamental parameters ; stars: interiors ; White dwarfs ; Àrees temàtiques de la UPC
Is Part Of: Monthly notices of the Royal Astronomical Society, 2017-10, Vol.470 (4), p.4473-4492
Description: Abstract We present high-precision, model-independent, mass and radius measurements for 16 white dwarfs in detached eclipsing binaries and combine these with previously published data to test the theoretical white dwarf mass–radius relationship. We reach a mean precision of 2.4 per cent in mass and 2.7 per cent in radius, with our best measurements reaching a precision of 0.3 per cent in mass and 0.5 per cent in radius. We find excellent agreement between the measured and predicted radii across a wide range of masses and temperatures. We also find the radii of all white dwarfs with masses less than 0.48 M⊙ to be fully consistent with helium core models, but they are on average 9 per cent larger than those of carbon–oxygen core models. In contrast, white dwarfs with masses larger than 0.52 M⊙ all have radii consistent with carbon–oxygen core models. Moreover, we find that all but one of the white dwarfs in our sample have radii consistent with possessing thick surface hydrogen envelopes (10−5 ≥ M H/M WD ≥ 10−4), implying that the surface hydrogen layers of these white dwarfs are not obviously affected by common envelope evolution.
Publisher: Oxford University Press
Language: English
Identifier: ISSN: 0035-8711
EISSN: 1365-2966
DOI: 10.1093/mnras/stx1522
Source: Recercat

Back to results list

Previous Result 8 Next Go to Next page


INSPIRE LIBRARY - TON DUC THANG UNIVERSITY	(84-028) 37 755 057	Feedback
19 Nguyen Huu Tho St. Dist.7, HCM	thuvien@tdtu.edu.vn	Feedback

Testing the white dwarf mass–radius relationship with eclipsing binaries

2017 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society 2017 ;info:eu-repo/semantics/openAccess ;ISSN: 0035-8711 ;EISSN: 1365-2966 ;DOI: 10.1093/mnras/stx1522

Searching Remote Databases, Please Wait