Many new variable stars discovered in the core of the globular cluster NGC 6715 (M 54) with EMCCD observations

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Volume 592 (August 2016)

A&A, 592 (2016) A120

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Table 1

Time-series I-band photometry for all known and new variables in the field of view covered in globular cluster NGC 6715.

var	Filter	HJD	M_std	m_ins	σ_m	f_ref	σ_ref	f_diff	σ_diff	p
id		(d)	(mag)	(mag)	(mag)	(ADUs^-1)	(ADUs^-1)	(ADUs^-1)	(ADUs^-1)
(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)	(11)

V112	I	2 456 435.88824	13.706	4.679	0.001	141 855.480	1550.259	–44401.153	540.539	5.9879
V112	I	2 456 436.89695	13.689	4.661	0.001	141 855.480	1550.259	–30447.356	609.851	5.8368
. . .	. . .	. . .	. . .	. . .	. . .	. . .	. . .	. . .	. . .	. . .
V160	I	2 456 435.88824	17.882	8.855	0.012	4069.406	1553.328	–7171.335	186.330	5.9879
V160	I	2 456 436.89695	17.646	8.618	0.015	4069.406	1553.328	–2916.178	292.135	5.8368
. . .	. . .	. . .	. . .	. . .	. . .	. . .	. . .	. . .	. . .	. . .
V173	I	2 456 435.88824	17.745	8.717	0.011	3251.773	1764.129	+39.643	192.483	5.9879
V173	I	2 456 436.89695	17.770	8.743	0.017	3251.773	1764.129	–400.238	286.082	5.8368
. . .	. . .	. . .	. . .	. . .	. . .	. . .	. . .	. . .	. . .	. . .

Notes. The standard M_std and instrumental m_ins magnitudes are listed in Cols. 4 and 5, respectively, corresponding to the variable star, filter, and epoch of mid-exposure listed in Cols. 1−3, respectively. The uncertainty on m_ins is listed in Col. 6, which also corresponds to the uncertainty on M_std. For completeness, we also list the quantities f_ref, f_diff, and p from Eq. (2) in Cols. 7, 9, and 11, along with the uncertainties σ_ref and σ_diff in Cols. 8 and 10. This is an extract from the full table, which is available at the CDS.

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