Joint Observations of PTPS Targets (JOTA). Combined spectroscopic and photometric analysis of 16 SB1 systems
Abstract
Context. The Pennsylvania-Toruń Planet Search, which operates on a sample of ∼1000 northern-hemisphere stars, has been underway since 2004. Stars with radial velocity (RV) amplitudes exceeding 2 km s−1 represent a backup subprogram sample dedicated to monitoring binary stars with multiple instruments. Aims. We used almost 21 years of combined RV measurements to search for Doppler signals consistent with stellar or brown dwarf companions and to produce a catalog of both known and previously unpublished binary stars in our planet-search sample. Methods. We analyzed the combined RV measurements, searching for stellar companions and obtaining orbital solutions for both known and new binary systems. We also searched for periods in available long-term photometric monitoring data from All Sky Automated Survey (ASAS), and applied Gaia astrometric data whenever available. Results. We report the results of long-term RV monitoring of 16 systems: new detections of low-mass companions to 11 stars and updated orbital elements based on combined sets of our new and literature data for five systems. For two objects (TYC 3318-00789-1 and TYC 3318-01538-1), we find evidence of activity or the influence of another unseen companion, possibly due to line-profile variations or unresolved spectral contamination. We present true masses for three systems in our sample: TYC 1931-1040-1, TYC 3451- 1449-1, and TYC 3667-1636-1. We obtained these masses using Gaia DR3 non-single star data.
Related
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BibTeX
@misc{jaros2026joint,
title = {{Joint Observations of PTPS Targets (JOTA). Combined spectroscopic and photometric analysis of 16 SB1 systems}},
author = {Robert Jaros and Andrzje Niedzielski and Sohaib Ali and Divyansh Srivastava and Julia Sierzputowska and Monika Adamów and Jorge Lillo-Box and Dmytro Orikhovskyi and Aleksander Wolszczan and Eva Villaver and Theodor Pribulla and Martin Vaňko},
howpublished = {arXiv},
year = {2026},
month = aug,
doi = {10.48550/arxiv.2608.30546},
eprint = {2608.30546},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2608.30546},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Joint Observations of PTPS Targets (JOTA). Combined spectroscopic and photometric analysis of 16 SB1 systems
AU - Robert Jaros
AU - Andrzje Niedzielski
AU - Sohaib Ali
AU - Divyansh Srivastava
AU - Julia Sierzputowska
AU - Monika Adamów
AU - Jorge Lillo-Box
AU - Dmytro Orikhovskyi
AU - Aleksander Wolszczan
AU - Eva Villaver
AU - Theodor Pribulla
AU - Martin Vaňko
PY - 2026
DA - 2026/08/31
PB - arXiv
DO - 10.48550/arxiv.2608.30546
UR - https://arxiv.org/abs/2608.30546
AB - Context. The Pennsylvania-Toruń Planet Search, which operates on a sample of ∼1000 northern-hemisphere stars, has been underway since 2004. Stars with radial velocity (RV) amplitudes exceeding 2 km s^−1 represent a backup subprogram sample dedicated to monitoring binary stars with multiple instruments. Aims. We used almost 21 years of combined RV measurements to search for Doppler signals consistent with stellar or brown dwarf companions and to produce a catalog of both known and previously unpublished binary stars in our planet-search sample. Methods. We analyzed the combined RV measurements, searching for stellar companions and obtaining orbital solutions for both known and new binary systems. We also searched for periods in available long-term photometric monitoring data from All Sky Automated Survey (ASAS), and applied Gaia astrometric data whenever available. Results. We report the results of long-term RV monitoring of 16 systems: new detections of low-mass companions to 11 stars and updated orbital elements based on combined sets of our new and literature data for five systems. For two objects (TYC 3318-00789-1 and TYC 3318-01538-1), we find evidence of activity or the influence of another unseen companion, possibly due to line-profile variations or unresolved spectral contamination. We present true masses for three systems in our sample: TYC 1931-1040-1, TYC 3451- 1449-1, and TYC 3667-1636-1. We obtained these masses using Gaia DR3 non-single star data.
ER -