2006A&A...448..579C

Query : 2006A&A...448..579C

2006A&A...448..579C - Astronomy and Astrophysics, volume 448579-588 (2006/3-3)

The GSC-II-based survey of ancient cool white dwarfs. I. The sample of spectroscopically confirmed white dwarfs.

CAROLLO D., BUCCIARELLI B., HODGKIN S.T., LATTANZI M.G., McLEAN B., MORBIDELLI R., SMART R.L., SPAGNA A. and TERRANEGRA L.

Abstract (from CDS):

The GSC-II white dwarf survey was designed to identify faint and high proper motion objects, which we used to define a new and independent sample of cool white dwarfs. With this survey we aim to derive new constraints on the halo white dwarf space density. Also, these data can provide information on the age of thick disk and halo through the analysis of the luminosity function. On the basis of astrometric and photometric parameters, we selected candidates with µ>0.28"/yr and RF>16 in an area of 1150 square degrees. Then, we separated white dwarfs from late type dwarfs and subdwarfs by means of the reduced proper motion diagram. Finally, spectroscopic follow-up observations were carried out to confirm the white dwarf nature of the selected candidates. We found 41 white dwarfs of which 24 are new discoveries. Here we present the full sample and for each object provide positions, absolute proper motions, photometry, and spectroscopy.

Abstract Copyright: ∼

Journal keyword(s): stars: white dwarfs - astrometry - techniques: spectroscopic - surveys

VizieR on-line data: <Available at CDS (J/A+A/448/579): table2.dat table3.dat table4.dat>

Nomenclature: Table 2: GSC2U JHHMMSS.s+DDMMSS N=41.

CDS comments: GSC2U J133360.0+001654 is GSC2U J133400.0+001654 in Simbad. Paragraph 4 . SP stars not identified.

Simbad objects: 46

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Number of rows : 46
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 LP 645-46 WD* 00 32 09.8585058586 -02 54 01.650664680   18.44 17.34     DA 28 0
2 LAWD 5 WD* 00 35 35.8382124422 +01 53 08.626899670   15.76 15.52 15.6   DA4.6 69 0
3 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
4 EGGR 462 WD* 01 04 56.4721762379 +21 19 58.868935539   18.6   17.8   DC9 41 0
5 EGGR 463 WD* 01 04 57.9558211711 +21 20 17.545876869   18.9   17.8   DC12 42 0
6 LP 411-34 WD* 02 59 36.0035705148 +17 25 32.582777651   19.4   18.7   DA 10 0
7 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7988 0
8 GSC2U J030339.2+140805 ** 03 03 39.1558289322 +14 08 01.835152974   20.7   19.2   DA+M 5 0
9 US 3714 WD* 03 10 00.5558300352 +16 30 20.738049912   17.5   17.9   DA 14 0
10 MACHO LMC 5 * 05 16 41.1 -70 29 18     21.15     ~ 62 1
11 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
12 GSC2U J071858.8+551406 WD* 07 18 58.9583683896 +55 14 04.459312500   21.2   20.2   DC 7 0
13 LP 318-432 WD* 11 35 24.6746088507 +27 17 41.369563544   19.6   18.0   DC 11 0
14 G 11-20 WD* 11 46 25.7655115285 -01 36 36.901939340   16.41 16.39 16.08 15.79 DA7.5 25 0
15 LP 217-20 WD* 12 28 10.0584600120 +41 50 03.540106248   19.2 18.78 18.6   DC 13 0
16 LP 217-47 WD* 12 37 52.2312390106 +41 56 24.685623772   16.8   16.7   DQ 31 0
17 LP 171-40 WD* 12 39 14.7022958934 +45 25 14.144673359   16.8   16.3   DA 31 0
18 LP 321-98 WD* 12 42 12.1722037564 +29 57 57.174174672   19.8   18.7   DA 18 0
19 NAME NGP reg 12 51 26.275 +27 07 41.70           ~ 1274 0
20 LP 267-306 WD* 12 53 12.6515972477 +34 37 13.540325741   19.2   18.5   DC 11 1
21 GSC2U J125509.6+465520 WD* 12 55 08.4608599390 +46 55 18.874207770   19.29 18.75     DC 17 0
22 EGGR 94 WD* 12 59 46.6567450670 +27 34 04.137867253   15.68   15.0   DAZ5.9 80 0
23 OMHR J131148.18+292337.1 WD* 13 11 47.0659076077 +29 23 49.670430735   19.2 18.75 18.03 17.51 DQpec 22 1
24 LP 378-956 WD* 13 17 48.9698854800 +21 57 13.593525444   17.0   17.2   DC 26 0
25 GSC2U J132325.2+303615 WD* 13 23 25.1452016520 +30 36 13.596157424   20.1   19.6   DA 9 0
26 LSPM J1328+4450 WD* 13 28 57.4528540320 +44 50 33.318727188   17.8   17.4   DC 7 0
27 GSC2U J132909.6+310947 WD* 13 29 09.3599974080 +31 09 47.569846140   21.21   19.35   DC 8 0
28 G 165-7 WD* 13 30 59.4185829051 +30 29 53.651822645   16.73 16.04 15.74 15.60 DZ7 84 0
29 EGGR 437 WD* 13 32 50.7243936792 +01 17 06.326972952   17.49   16.9   DC+DA 49 0
30 LP 618-6 WD* 13 33 59.8439831563 +00 16 55.033199072   19.51   18.5   DQH 28 0
31 LP 618-14 ** 13 36 16.0374162449 +00 17 32.551214112   17.4   16.9   DA+dM 22 0
32 LP 269-25 WD* 13 36 20.2181624748 +36 48 29.903548275   18.0   17.5   DA 13 0
33 LP 618-35 WD* 13 40 43.3607316497 +02 03 48.305855103   18.0 17.85 17.4   DC 17 1
34 LP 219-53 WD* 13 41 07.9059438312 +41 50 04.193955960   17.6   17.0   DA 23 0
35 PB 803 WD* 13 51 18.4061758468 +42 53 16.905318859   17.6   16.4   DZ 28 0
36 LSPM J1556+1153 ** 15 56 11.51400 +11 53 51.5220   20.0   19.1   DC 3 0
37 LP 504-10 WD* 15 57 21.6599019431 +14 12 10.602442785   19.0   17.9   DC 11 0
38 LSPM J1622+6701 WD* 16 22 41.9442273384 +67 01 13.437140520   18.5   18.6   DA 11 0
39 LP 626-11 WD* 16 52 37.5915125366 -01 13 56.412786920   17.84   16.68   DA 10 0
40 LSR J2222+1221 WD* 22 22 33.8200454823 +12 21 42.648703042   20.1   16.5   DC 14 0
41 LP 700-65 WD* 22 40 11.1328066392 -03 03 18.588948228           DC 9 0
42 EGGR 554 WD* 23 15 18.8072875951 -02 09 40.600262749   16.80 16.29     DZ8 55 0
43 LP 642-52 WD* 23 21 15.3429891000 +01 02 11.955257952   20.3   19.2   DA 21 0
44 LP 642-53 WD* 23 21 15.6988868928 +01 02 24.591263244   20.8   19.4   DC 20 0
45 LSPM J2335+1230 WD* 23 35 39.0926319888 +12 30 47.330755380   19.0   18.6   DC 14 0
46 LP 643-20 WD* 23 37 07.6244227990 +00 32 41.792308070   18.0   17.6   DA 13 0

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