SIMBAD references

2012MNRAS.426.1235V - Mon. Not. R. Astron. Soc., 426, 1235-1261 (2012/October-3)

Spectroscopic follow-up of ultraviolet-excess objects selected from the UVEX survey.

VERBEEK K., GROOT P.J., SCARINGI S., NAPIWOTZKI R., SPIKINGS B., OSTENSEN R.H., DREW J.E., STEEGHS D., CASARES J., CORRAL-SANTANA J.M., CORRADI R.L.M., DEACON N., DRAKE J.J., GANSICKE B.T., GONZALEZ-SOLARES E., GREIMEL R., HEBER U., IRWIN M.J., KNIGGE C. and NELEMANS G.

Abstract (from CDS):

We present the results of the first spectroscopic follow-up of 132 optically blue ultraviolet (UV)-excess sources selected from the UV-Excess Survey of the Northern Galactic Plane (UVEX). The UV-excess spectra are classified into different populations and grids of model spectra are fitted to determine spectral types, temperatures, surface gravities and reddening. From this initial spectroscopic follow-up 95 per cent of the UV-excess candidates turn out to be genuine UV-excess sources such as white dwarfs, white dwarf binaries, subdwarf types O and B, emission-line stars and quasi stellar objects. The remaining sources are classified as slightly reddened main-sequence stars with spectral types later than A0V. The fraction of DA white dwarfs is 47 per cent with reddening smaller than E(B - V) ≤ 0.7mag. Relations between the different populations and their UVEX photometry, Galactic latitude and reddening are shown. A larger fraction of UVEX white dwarfs is found at magnitudes fainter than g > 17 and Galactic latitude smaller than|b| < 4 compared to main-sequence stars, blue horizontal branch stars and subdwarfs.

Abstract Copyright: © 2012 The Authors Monthly Notices of the Royal Astronomical Society © 2012 RAS

Journal keyword(s): surveys - subdwarfs - white dwarfs - ISM: general - Galaxy: disc - Galaxy: stellar content

VizieR on-line data: <Available at CDS (J/MNRAS/426/1235): tablea1.dat table2.dat table3.dat>

Simbad objects: 139

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2021.05.07-12:40:36

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