2025MNRAS.544...24P

Query : 2025MNRAS.544...24P

2025MNRAS.544...24P - Mon. Not. R. Astron. Soc., 544, 24-35 (2025/November-3)

Eclipse timing variations in seven post-common envelope binaries: an update and analysis of their recently proposed circumbinary models.

PULLEY D., SHARP I.D., MALLETT J. and VON HARRACH S.

Abstract (from CDS):

Eclipsing, short-period post-common envelope binaries (PCEBs) have been studied for several decades by eclipse timing variations (ETVs) which have been interpreted as being caused by circumbinary bodies. In this paper, we report 355 new observations of seven PECBs (HS0705+6700, NN Ser, NSVS 07826147, NSVS 14256825, NY Vir, QS Vir, and RR Cae) and examine how the recent proposed models of these systems compare with our new observations. We find that none of the 18 recent models fit accurately with our data. We review alternative mechanisms of the ETVs, including magnetic effects, but conclude that they do not predict our results. Although we cannot exclude the presence of circumbinary bodies a combination of several mechanisms may be required to explain the observed ETVs.

Abstract Copyright: © The Author(s) 2025. Published by Oxford University Press on behalf of Royal Astronomical Society.

Journal keyword(s): binaries: close - binaries: eclipsing - stars: individual: HS0705+6700, NN Ser, NSVS 07826147, NSVS 14256825, NY Vir, QS Vir, RR Cae - planetary systems - subdwarfs - white dwarfs

Status at CDS : Large table(s) will be appraised for possible ingestion in VizieR.

Simbad objects: 19

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Number of rows : 19
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 V* UZ For CV* 03 35 28.6518733656 -25 44 21.768755424           M4.5 279 0
2 V* V471 Tau SB* 03 50 24.9666549840 +17 14 47.430910716   10.258 9.373   8.393 K2V+DA 697 0
3 V* RR Cae WD* 04 21 05.5631820426 -48 39 07.061113433 14.50 14.92 14.40     DA7.8 168 1
4 V* V470 Cam HS* 07 10 42.0513241680 +66 55 43.521505680           sdB+dM 118 0
5 V* DP Leo CV* 11 17 15.9239894616 +17 57 41.690453220           ~ 237 1
6 BD-07 3477 HS* 12 44 20.2386233232 -08 40 16.846099536   10.46 10.594 10.895   sdB2VIIHe3 303 1
7 PSR B1257+12 Psr 13 00 03.1075 +12 40 55.155           ~ 546 1
8 V* DE CVn ** 13 26 53.2712830008 +45 32 46.685746104   14.23 12.96 12.59   M3V+DA 64 0
9 V* NY Vir HS* 13 38 48.1466908176 -02 01 49.207286748   13.43 13.66 13.75   sdB1VIIHe1 237 1
10 V* QS Vir SB* 13 49 52.0029035208 -13 13 37.000132212 14.27 14.98 14.40 14.37   DA3+dM 147 1
11 FBS 1531+381 HS* 15 33 49.4441301600 +37 59 28.095378720     13.08     sdB+dM 52 0
12 V* NN Ser RS* 15 52 56.1203524080 +12 54 44.429312196     16.51     DAO1+M4 287 0
13 MXB 1658-298 LXB 17 02 06.54 -29 56 44.1 18.35 18.75 18.3     ~ 381 0
14 NSVS 1135262 EB* 18 47 08.5821857304 +78 42 29.339541864     13.087     ~ 12 0
15 Kepler-1600 Ro* 19 25 35.8504898544 +38 47 15.862866360           ~ 41 0
16 Kepler-451 HS* 19 38 32.6123816016 +46 03 59.135231952   12.17 12.69 12.46 12.399 sdB+dM 103 0
17 V* V1828 Aql HS* 20 20 00.4587151080 +04 37 56.517736296   12.9   13.34   sdOB+dM 77 1
18 V* HU Aqr CV* 21 07 58.1944529400 -05 17 40.557671916   16.198 15.814 14.891   D+M4V 292 1
19 HS 2231+2441 HS* 22 34 21.4832585640 +24 56 57.392918196     14.20     sdB+dM 58 0

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