A comprehensive search for hot subdwarf stars using Gaia and TESS - II. Uncovering new pulsators and close binary systems

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Volume 700 (August 2025)

A&A, 700 (2025) A71

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Table 2

Spectroscopic results for the newly discovered variable sdBs presented in Table A.1 (asterisk-marked entries).

TIC	T_eff(K)	Literature T_eff	log g(cm s⁻²)	Literature log g	log (n_He/n_H)	Distance (pc)	Ref.
Pulsating sdBs
27782233	20 670 ± 100	21 420 ± 129	5.27 ± 0.02	5.26 ± 0.02	−2.24 ± 0.07	$423_{- 6}^{+ 5}$ $423_{-6}^{+5}$	This work, 1
28522887	20 620 ± 160		5.16 ± 0.05		−2.12 ± 0.12	$773_{- 12}^{+ 17}$ $773_{-12}^{+17}$	This work 1
207111243	29 410 ± 140		5.35 ± 0.02		−1.86 ± 0.04	$399_{- 6}^{+ 6}$ $399_{-6}^{+6}$	This work
48085434	25 370 ± 110		5.33 ± 0.06		−2.62 ± 0.07	$1358_{- 37}^{+ 43}$ $1358_{-37}^{+43}$	This work
154432267	21 160 ± 260		5.35 ± 0.07		−3.38 ± 0.04	$525_{- 5}^{+ 6}$ $525_{-5}^{+6}$	This work
258021652	24 690 ± 440		5.14 ± 0.07		−2.94 ± 0.06	$1215_{- 58}^{+ 62}$ $1215_{-58}^{+62}$	This work
341157482	20 540 ± 160		5.10 ± 0.02		−1.63 ± 0.04	$1076_{- 33}^{+ 45}$ $1076_{-33}^{+45}$	This work
348825375	25 550 ± 980		5.27 ± 0.18		−2.89 ± 0.15	$710_{- 9}^{+ 11}$ $710_{-9}^{+11}$	This work
387884969	23 440 ± 840		5.30 ± 0.09		−2.92 ± 0.03	$585_{- 10}^{+ 12}$ $585_{-10}^{+12}$	This work
310930161	24 900 ± 980		5.09 ± 0.09		−2.73 ± 0.04	$739_{- 12}^{+ 14}$ $739_{-12}^{+14}$	This work
Low relative-likelihood pulsator/binary candidates
326559609	25 260 ± 110		5.38 ± 0.13		−1.57 ± 0.02	$880_{- 26}^{+ 32}$ $880_{-26}^{+32}$	This work
Stars whose atmospheric parameters were collected from literature. Pulsating sdBs
33770579		25 300 ± 500		5.55 ± 0.06		$2760_{- 270}^{+ 252}$ $2760_{-270}^{+252}$	2
77477081		40 300 ± 80		6.08 ± 0.04		$1507_{- 73}^{+ 73}$ $1507_{-73}^{+73}$	3
161358962		36 980 ± 90		5.59 ± 0.04		$715_{- 14}^{+ 15}$ $715_{-14}^{+15}$	3
194807290		24 809 ± 298		5.27 ± 0.03		$764_{- 19}^{+ 19}$ $764_{-19}^{+19}$	1
273084007		27 135 ± 204		5.26 ± 0.03		$1035_{- 34}^{+ 39}$ $1035_{-34}^{+39}$	1
373731788		23 988 ±−		5.00 ±−		$710_{- 9}^{+ 11}$ $710_{-9}^{+11}$	4*
Binary candidates
239930769		22 640 ± 550		5.71 ± 0.07		$1247_{- 68}^{+ 80}$ $1247_{-68}^{+80}$	5
368827573		29 658 ± 509		5.53 ± 0.08		$1205_{- 42}^{+ 47}$ $1205_{-42}^{+47}$	1
Low relative-likelihood pulsator/binary candidates
457094678		26 933 ± 355		5.27 ± 0.04		$1077_{- 38}^{+ 42}$ $1077_{-38}^{+42}$	1
184607974		28 744 ± 303		5.47 ± 0.04		$936_{- 36}^{+ 30}$ $936_{-36}^{+30}$	1

Notes. For 11 sdBs (top part of the table), the atmospheric parameters were derived from our own observations (see Table 1). When atmospheric parameters are also available in literature, they are shown in the columns marked ‘literature’ and referenced in the ‘Ref.’ column. If multiple parameters are available in literature for the same object, the most recently published values of T_eff and log g are shown. Distances are given in the ‘Distance’ column. The bottom part of the table lists the remaining 10 objects from Table A.1, for which atmospheric parameters were found in literature. 1 – Luo et al. (2021); 2 – Moni Bidin et al. (2017); 3 – Jeffery et al. (2021); 4* – Kilkenny et al. (1988), errors are not listed in their catalogue; 5 – Lei et al. (2019).

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