Discovery of an extended G giant chromosphere in the 2019 eclipse of γ Per

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Table 1

Information about the date and time of the eclipse data of Gamma Persei.

γ Persei spectra log

Date	JD2458000+	h_A,0/GM	h′/GM
15.11.2019	803.71	+3.53	3.53
16.11.2019	804.73	+0.21	1.46
18.11.2019	805.88	–	–
25.11.2019	813.60	−1.21	0.78
26.11.2019	814.58	+2.07	2.40
28.11.2019	816.65	–	–

Notes. The last two columns represent the projected height of the centre of the companion star over the outer limb of the giant and an effective height of its uneclipsed disk. Further details are stated in the text.

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