SIMBAD references

2006A&A...448..579C - Astronomy and Astrophysics, volume 448, 579-588 (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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2021.05.06-01:11:15

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