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 A.1

Newly discovered variable hot subdwarfs.

TIC	RA[deg]	Dec[deg]	T_mag	CROWDSAP	Dist. [pc]	Phot.	P [d]	Signal found [d ¹]	notes
22 pulsating sdBs
* 27782233	332.51130	25.06619	13.04	0.75-0.75	$423_{- 6}^{+ 5}$ $423^{+5}_{-6}$	G		6-13	(A)
* 28522887	277.92211	−33.21500	13.83	0.09-0.09	$773_{- 12}^{+ 17}$ $773^{+17}_{-12}$	G		8-14
s 33770579	63.46109	−72.31437	16.12	0.63-0.89	$2760_{- 270}^{+ 252}$ $2760^{+252}_{-270}$	G		20-28
* 48085434	281.94284	50.69302	14.81	0.62-0.73	$1358_{- 37}^{+ 43}$ $1358^{+43}_{-37}$	G		10-20
s 77477081	73.38387	−37.02855	15.91	0.67-0.96	$1507_{- 73}^{+ 73}$ $1507^{+73}_{-73}$	I		119.4820 (weak)
137807038	334.89380	−22.52944	14.03	0.97-0.99	$774_{- 26}^{+ 28}$ $774^{+28}_{-26}$	G		5-10
* 154432267	343.15803	43.41414	14.27	0.32-0.48	$525_{- 5}^{+ 6}$ $525^{+6}_{-5}$	G		10-30
s 161358962	344.14968	−52.81002	13.10	0.81-0.81	$715_{- 14}^{+ 15}$ $715^{+15}_{-14}$	GB?		38.3439	(A)
178626010	124.68931	−3.39891	16.22	0.25-0.25	$873_{- 44}^{+ 48}$ $873^{+48}_{-44}$	G?		17.162+ 4S/N)
s 194807290	51.90712	38.13605	14.22	0.47-0.47	$764_{- 19}^{+ 19}$ $764^{+19}_{-19}$	G?		17.858 + 4S/N
* 207111243	42.59018	−56.21456	12.18	0.99-1.00	$399_{- 6}^{+ 6}$ $399^{+6}_{-6}$	I		69.8385 (weak)
* 258021652	328.22349	22.86702	14.70	0.79-0.85	$1215_{- 58}^{+ 62}$ $1215 ^{+62}_{-58}$	G?		26.804+ 4S/N	(A)
270712778	104.87072	11.58917	15.11	0.13-0.14	$1335_{- 68}^{+ 66}$ $1335^{+66}_{-68}$	G		7.5-8.0
s 273084007	303.06739	8.26896	14.66	0.79-0.79	$1035_{- 34}^{+ 39}$ $1035^{+39}_{-34}$	G		14-27
* 310930161	270.31295	21.81315	13.63	0.56-0.68	$739_{- 12}^{+ 14}$ $739^{+14}_{-12}$	G		15-26	(A)
* 341157482	310.64494	12.17616	14.35	0.77-0.77	$1076_{- 33}^{+ 45}$ $1076^{+45}_{-33}$	G		6-12
* 348825375	282.41760	19.53286	14.37	0.06-0.06	$710_{- 9}^{+ 11}$ $710^{+11}_{-9}$	G		14-24
s 373731788	198.99220	12.96114	14.74	0.68-0.68	$984_{- 39}^{+ 51}$ $984^{+51}_{-39}$	G		8-20
* 387884969	306.57477	4.85953	13.54	0.96-0.96	$585_{- 10}^{+ 12}$ $585^{+12}_{-10}$	G		12-25
402894814	302.86649	70.16448	14.52	0.87-0.97	$722_{- 8}^{+ 8}$ $722^{+8}_{-8}$	G		10-20
456643055	309.34824	16.14521	14.74	0.30-0.30	$967_{- 31}^{- 29}$ $967^{-29}_{-31}$	G		12-16	(A)
457751424	218.24664	−50.02970	16.34	0.09-0.09	$1091_{- 56}^{+ 63}$ $1091^{+63}_{-56}$	I		153.3945 (weak)
1 pulsating sdO in a binary candidate
5816844	187.34692	−18.13551	14.71	0.79-0.79	$1524_{- 91}^{+ 97}$ $1524^{+97}_{-91}$	B,P	2.7605	0.36(B) + 623.3369	(A)
2 linary+pulsating sdB candidates
170888817	139.53658	−5.62606	16.71	0.24-0.24	$1685_{- 123}^{+ 138}$ $1685^{+138}_{-123}$	B+G?	5.1476	0.19(B) + 6.5(G?)
262759774	108.01039	6.91039	15.12	0.30-0.30	$1607_{- 92}^{+ 71}$ $1607^{+71}_{-92}$	B+G?	6.0875	0.17(B) + 7.1(G?)
13 binary candidates
11550004	97.05463	54.65817	16.58	0.35-0.35	$2236_{- 290}^{+ 438}$ $2236^{+438}_{-290}$	B	0.1571	6.3615
64140928	106.37768	−28.39428	15.53	0.25-0.31	$2740_{- 188}^{+ 220}$ $2740^{+220}_{-188}$	BG?	0.1888	5.2932 + harm
93444702	87.22529	−22.42388	16.42	0.29-0.44	$1512_{- 96}^{+ 106}$ $1512^{+106}_{-96}$	B	4.9209	7.2082
130579011	105.77032	−44.88912	16.54	0.14-0.16	$2229_{- 193}^{+ 234}$ $2229^{+234}_{-193}$	B	5.7458	7.0739
192733455	48.14085	47.10001	15.74	0.12-0.12	$1535_{- 97}^{+ 109}$ $1535^{+109}_{-97}$	BG?	2.4810	7.366	(A)
230727888	312.13667	35.21689	15.74	0.09-0.09	$1279_{- 51}^{+ 50}$ $1279^{+50}_{-51}$	B	0.1655	6.0437
s 239930769	93.95010	34.78063	15.79	0.07-0.09	$1247_{- 68}^{+ 80}$ $1247^{+80}_{-68}$	B	0.0405	24.6680
s 368827573	100.67621	39.13993	14.76	0.74-0.80	$1205_{- 42}^{+ 47}$ $1205^{+47}_{-42}$	B	0.0805	12.4289 (weak)
418031783	42.86236	44.70090	14.52	0.55-0.55	$962_{- 34}^{+ 40}$ $962^{+40}_{-34}$	B	0.0693	14.4383 (weak)
433351247	42.27033	36.73065	15.42	0.63-0.63	$978_{- 145}^{+ 144}$ $978^{+144}_{-145}$	B	0.0522	19.1652 + harm	(A)
466273074	305.56511	−61.99187	14.95	0.83-0.89	$1279_{- 61}^{+ 58}$ $1279^{+58}_{-61}$	B	0.0603	16.5917 (weak)
466750264	309.50381	4.48565	15.00	0.50-0.50	$1379_{- 74}^{+ 67}$ $1379^{+67}_{-74}$	B	0.1310	7.6321 (refl.)
1228441515	243.66382	−53.89746	16.11	0.01-0.02	$1274_{- 60}^{+ 94}$ $1274^{+94}_{-60}$	B	0.1474	6.7855 (refl?)
4 low-likelihood pulsator/binary candidates
s 184607974	31.53730	37.64753	14.19	0.72-0.72	$936_{- 36}^{+ 30}$ $936^{+30}_{-36}$	GB?		24.2765 + 4S/N
* 326559609	270.58568	−36.08890	14.34	0.09-0.12	$880_{- 26}^{+ 32}$ $880^{+32}_{-26}$	G?B?		10.3554	(A)
355002205	129.76354	−65.57723	14.23	0.59-0.75	$923_{- 18}^{+ 19}$ $923^{+19}_{-18}$	GI		13-20 + 235.7
s 457094678	105.56337	12.29818	14.84	0.27-0.53	$1077_{- 38}^{+ 42}$ $1077^{+42}_{-38}$	B		6.7569

(A) Discussed in Appendix A

Notes. The table includes 22 pulsating sdBs, 1 pulsating sdO and 2 pulsating sdBs in binary candidates, 13 binary candidates and 4 low relative- likelihood pulsator/binary candidates. The columns are: TIC number, right ascension, declination (J 2000), TESS magnitude, crowding factor (CROWDSAP), distances (geometric, from Bailer-Jones et al. 2021), assigned variability type based on time-series photometry (G: Gravity mode, I: Intermediate mode, B: Binary [not eclipsing], binary candidate variability period, signal information, and notes. An asterisk (*) before the TIC number indicates spectral observations conducted in this work, while stars marked with an ‘s’ have T_eff and log g values derived from SIMBAD (see Table 2). In the ‘Signal found’ column, ‘4S/N’ denotes additional periodogram signals found above the 4 and below 5 S/N detection thresholds.

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