A search for new hot subdwarf stars by means of Virtual Observatory tools

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Table 2

Percentage of input objects fulfilling the selection criteria.

	Hot sds	WDs	CVs	OBs

¹ Rhee et al. criteria
−4 < (FUV₀ − Ks₀) < 1	92%	12%	24%	45%
−1.5 < (FUV₀ − NUV₀) < 0.5
² This paper
−4 < (FUV₀ − Ks₀) < 0.5	87%	10%	13%	33%
−2 < (FUV₀ − NUV₀) < 0.2
³ This paper
19 < H(NUV₀) < 27	83%	3%	11%	21%
⁴ Total number after 2&3	960	14	30	7
⁵ VOSA T_eff > 19 000^a	64(72)%	3(3)%	1(4)%	3(6)%
⁶ Total number after 2, 3 & 5^a	749 (846)	14 (14)	3 (12)	1 (2)

Notes. Percentages refer to objects with data in 2mass+galex+SuperCOSMOS catalogues (see Table 1 for further details).

⁽¹⁾

Percetage of input objects fulfilling the two-colour indices (FUV₀ − Ks₀) – (FUV₀ − NUV₀) selection criterion given by Rhee et al. (2006).

⁽²⁾

Same as in ⁽¹⁾ but for the criterion proposed in this paper.

⁽³⁾

Reduced proper motion filter.

⁽⁴⁾

Same as in ⁽³⁾ but in absolut numbers.

⁽⁵⁾

Objects after the temperature filter.

⁽⁶⁾

Same as in ⁽⁵⁾ but in absolut numbers.

^(a)

In parenthesis: considering also objects with a bad SED fit (see Sect. 3.4).

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