Search for very-high-energy γ-ray emission from Galactic globular clusters with H.E.S.S.

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Table 1

The GC sample studied in this work.

GC	Long.¹	Lat.¹	Zenith²	Offset²	Livetime³
name	(°)	(°)	(°)	(°)	(h)

NGC 104 (47 Tuc)^*	305.89	−44.89	49.8	0.9	23.1
NGC 6388^(*)	345.56	−6.74	23.6	0.7	17.9
NGC 7078 (M 15)	65.01	−27.31	37.5	0.7	12.3
Terzan 6 (HP 5)	358.57	−2.16	24.6	1.8	15.2
Terzan 10	4.49	−1.99	18.1	1.6	4.2
NGC 6715 (M 54)	5.61	−14.09	18.3	0.7	11.8
NGC 362	301.53	−46.25	49.5	1.3	5.0
Pal 6	2.10	1.78	19.4	1.4	24.7
NGC 6256	347.79	3.31	20.5	1.3	5.3
Djorg 2	2.77	−2.50	15.9	1.7	4.6
NGC 6749	36.20	−2.21	33.7	1.5	8.2
NGC 6144	351.93	15.70	26.8	1.4	4.7
NGC 288	152.30	−89.38	11.8	1.4	46.7
HP 1 (BH 229)	357.44	2.12	14.3	1.5	5.6
Terzan 9	3.61	−1.99	18.4	1.5	5.2

Notes.

⁽¹⁾

Galactic coordinates used for the analyses, as given by H10;

⁽²⁾

Mean zenith angle and offset averaged over all contributing runs;

⁽³⁾

Acceptance corrected livetime of all H.E.S.S. observation runs passing quality cuts;

^(*)

GC is detected with Fermi/LAT.

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