2008MNRAS.383..957L

Query : 2008MNRAS.383..957L

2008MNRAS.383..957L - Mon. Not. R. Astron. Soc., 383, 957-961 (2008/January-3)

White dwarfs in the CFHTLS Deep fields.

LIMBOZ F., KARATAS Y., KILIC M., BENOIST C. and ALIS S.

Abstract (from CDS):

We present an initial assessment of white dwarfs in the third data release of the Canada-France-Hawaii Telescope Legacy Survey (CFHTLS) Deep fields. Following the morphological classification of point sources, we have selected the white dwarf candidates through colour cuts. A detailed comparison between the observed colours of the selected point sources with the expected colours of white dwarfs and quasars reveal 28 white dwarf candidates with Teff≥ 5500 K. Eight of these candidates are spectroscopically confirmed to be white dwarfs, which demonstrates that our selection process is robust. Even though the i-band limiting magnitude of the Deep fields is i ∼ 26 mag, we find that the star-galaxy separation is not reliable for i > 21. Using spectroscopic data from the VLT-VIRMOS Deep Survey, we quantify the contamination of our stellar sample by quasars and galaxies. Our catalogue of white dwarfs is incomplete, and further studies of the population of white dwarfs in the CFHTLS require accurate proper-motion measurements.

Abstract Copyright: 2007 The Authors. Journal compilation © 2007 RAS

Journal keyword(s): techniques: photometric - stars: evolution - white dwarfs

Nomenclature: Table 2: [LKK2008] JHHMMSS.ss+DDMMSS.s N=28.

Simbad objects: 28

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Number of rows : 28
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 [LKK2008] J022405.26-042216.3 WD? 02 24 05.2581715488 -04 22 16.404726576           ~ 5 0
2 VIDEO J022423.76-041318.84 WD? 02 24 23.7676164120 -04 13 18.700189248           ~ 4 0
3 PHL 4061 WD* 02 25 11.6208026016 -04 56 10.458665232   17.9       DA 8 0
4 [LKK2008] J022512.69-043851.3 WD? 02 25 12.7192987392 -04 38 51.603932436           ~ 1 0
5 VIDEO J022558.20-040236.39 WD? 02 25 58.1787943152 -04 02 36.759037380           ~ 4 0
6 SDSS J022734.22-042228.7 QSO 02 27 34.2261858384 -04 22 28.696199592           ~ 14 0
7 VIDEO J022746.39-042109.26 WD? 02 27 46.3820304984 -04 21 09.372820356           ~ 4 0
8 GALEX J095843.5+015927 WD* 09 58 43.4798196288 +01 59 27.743209224   18.378 18.813     DA 11 0
9 GALEX J095923.4+023143 WD* 09 59 23.4761721552 +02 31 43.334435280   19.206 19.452 18.5   DB 9 0
10 GALEX J095937.0+023828 WD* 09 59 36.9595371528 +02 38 28.522683528   18.311 18.461     DA 15 0
11 COSMOS 2013003 WD? 09 59 50.9610424296 +02 24 30.447914148   21.095 21.108   21.17 ~ 3 0
12 2QZ J100005.6+015858 WD* 10 00 05.6799200664 +01 58 59.072756520   19.97       DA 11 0
13 GALEX J100049.7+022217 WD* 10 00 49.6828156680 +02 22 17.021721972   19.439 19.637     DA 9 0
14 [LKK2008] J141707.56+530453.7 WD* 14 17 07.5587551008 +53 04 53.690451420           DC 3 0
15 SDSS J141724.11+525227.6 WD* 14 17 24.1329902784 +52 52 27.360403428           DA 12 0
16 SDSS J141727.10+530648.9 WD* 14 17 27.1041676128 +53 06 49.006175292           D 3 0
17 SDSS J141800.79+522439.8 WD* 14 18 00.7942781568 +52 24 39.669606000           DA 9 0
18 SBSS 1418+524 WD* 14 20 20.7890802888 +52 15 49.293967032   17.3   17.8   DA 23 0
19 SDSS J142118.18+523547.1 WD* 14 21 18.1963788936 +52 35 47.054658012           DA 9 0
20 SDSS J142125.69+530454.3 WD* 14 21 25.7143269408 +53 04 54.324297912           DA 13 0
21 SDSS J142128.70+521317.9 WD* 14 21 28.6949168904 +52 13 18.073532856           DA 12 0
22 [LKK2008] J221326.37-172319.1 WD? 22 13 26.4080662728 -17 23 19.042766520           ~ 2 0
23 [LKK2008] J221330.98-180144.5 WD? 22 13 30.98 -18 01 44.5           ~ 1 0
24 GALEX J221405.7-175905 WD? 22 14 05.7334609728 -17 59 04.972039872   18.2   18.5   ~ 6 0
25 [LKK2008] J221410.92-174036.6 WD? 22 14 10.9365671234 -17 40 36.590212348           ~ 2 0
26 [LKK2008] J221458.39-180742.6 WD? 22 14 58.3988032800 -18 07 42.579523848           ~ 2 0
27 LBQS 2212-1747 QSO 22 15 15.2454745800 -17 32 21.806177244   18.89 18.3 17.30   ~ 16 0
28 [LKK2008] J221621.92-174408.0 WD? 22 16 21.9287244048 -17 44 08.111497236           ~ 2 0

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