Gaia-ESO Survey: Empirical classification of VLT/Giraffe stellar spectra in the wavelength range 6440–6810 Å in the γ Velorum cluster, and calibration of spectral indices

Free Access

Table 1

Wavelength ranges for definition of spectral indices.

Index	A range(s)	B range(s)
	Å	Å

μ₁	6468–6477	6479–6487
μ₂	6530–6540	6544–6552
μ₃	6641–6648	6651–6658
μ₄	6664–6676	6681–6695
μ₅	(6702–6706.26)+(6709.26–6713)	6718–6726
μ₆	6738–6745	6747–6755
μ₇	6773–6780	6782–6790
α_w^a	(6556.8–6560.8)+(6564.8–6568.8)	(6532.8–6542.8)+(6582.8–6592.8)
α_c	6560.8–6564.8	(6532.8–6542.8)+(6582.8–6592.8)
β_t	6492.6–6502.6	(6487–6489)+(6505–6507)
β_c	(6495.9–6499.3)+(6489–6492)^b	(6487–6489)+(6505–6507)
γ₁	(6759–6761)+(6763.5–6765.5)+	(6761.5–6763.5)+(6765.5–6768.4)+
	(6768.4–6770.0)+(6771.7–6774.1)	(6770.0–6771.7)+(6774.1–6776.0)
ζ₁	6624–6626	6632.7–6634.7

Notes.

^(a)

The α_w index must include a correction based on μ, see text.

^(b)

The 6489–6492 Å range is summed with the main range with relative weights 1:7.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.