Five New Sirius-Like White Dwarf + Main Sequence Star Systems with MagAO-X

Fuente: arXiv

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Bibliographic Details
Main Authors:	Pearce, Logan A., Males, Jared R., Haffert, Sebastiaan Y., Close, Laird M., Long, Joseph D., McEwen, Eden A., Liberman, Joshua, Kautz, Maggie Y., Kueny, Jay K., Weinberger, Alycia J., Li, Jialin, Tonucci, Elena, Twitchell, Katie, McLeod, Avalon, Foster, Warren B., Guyon, Olivier, Hedglen, Alexander, Van Gorkom, Kyle, Lumbres, Jennifer, Schatz, Lauren, Gasho, Victor, Morzinski, Katie M., Hinz, Phil M.
Format:	Preprint
Published:	2025
Subjects:	Solar and Stellar Astrophysics
Online Access:	Acceder al recurso
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_version_	1866912389118558208
author	Pearce, Logan A. Males, Jared R. Haffert, Sebastiaan Y. Close, Laird M. Long, Joseph D. McEwen, Eden A. Liberman, Joshua Kautz, Maggie Y. Kueny, Jay K. Weinberger, Alycia J. Li, Jialin Tonucci, Elena Twitchell, Katie McLeod, Avalon Foster, Warren B. Guyon, Olivier Hedglen, Alexander Van Gorkom, Kyle Lumbres, Jennifer Schatz, Lauren Gasho, Victor Morzinski, Katie M. Hinz, Phil M.
author_facet	Pearce, Logan A. Males, Jared R. Haffert, Sebastiaan Y. Close, Laird M. Long, Joseph D. McEwen, Eden A. Liberman, Joshua Kautz, Maggie Y. Kueny, Jay K. Weinberger, Alycia J. Li, Jialin Tonucci, Elena Twitchell, Katie McLeod, Avalon Foster, Warren B. Guyon, Olivier Hedglen, Alexander Van Gorkom, Kyle Lumbres, Jennifer Schatz, Lauren Gasho, Victor Morzinski, Katie M. Hinz, Phil M.
contents	Most known white dwarfs in multiple systems with main sequence stars have been discovered with M-type companions, because the white dwarf causes detectable UV excess and bluer colors than expected from a single M star. Surveys have shown that the number of white dwarfs in Sirius-like systems within 100 pc of the Sun is lower than expected, suggesting that white dwarfs are being missed in the glare of their main sequence companions. In this work we have leveraged the angular resolution and high-contrast capabilities, as well as optimization for visible wavelengths, of the extreme adaptive optics instrument MagAO-X to detect new white dwarf companions to AFGK stars. We present the first results of our survey with the extreme AO instrument MagAO-X, called the Pup Search, of 18 targets with seven new candidate companions, five of which are confirmed to be white dwarfs. We discuss the new detections in the context of previous surveys and other detection metric sensitivities and show that we are sensitive to a region not probed by other surveys. Finally we discuss the future of the Pup Search in light of developing technologies.
format	Preprint
id	arxiv_https___arxiv_org_abs_2505_14439
institution	arXiv
publishDate	2025
record_format	arxiv
spellingShingle	Five New Sirius-Like White Dwarf + Main Sequence Star Systems with MagAO-X Pearce, Logan A. Males, Jared R. Haffert, Sebastiaan Y. Close, Laird M. Long, Joseph D. McEwen, Eden A. Liberman, Joshua Kautz, Maggie Y. Kueny, Jay K. Weinberger, Alycia J. Li, Jialin Tonucci, Elena Twitchell, Katie McLeod, Avalon Foster, Warren B. Guyon, Olivier Hedglen, Alexander Van Gorkom, Kyle Lumbres, Jennifer Schatz, Lauren Gasho, Victor Morzinski, Katie M. Hinz, Phil M. Solar and Stellar Astrophysics Most known white dwarfs in multiple systems with main sequence stars have been discovered with M-type companions, because the white dwarf causes detectable UV excess and bluer colors than expected from a single M star. Surveys have shown that the number of white dwarfs in Sirius-like systems within 100 pc of the Sun is lower than expected, suggesting that white dwarfs are being missed in the glare of their main sequence companions. In this work we have leveraged the angular resolution and high-contrast capabilities, as well as optimization for visible wavelengths, of the extreme adaptive optics instrument MagAO-X to detect new white dwarf companions to AFGK stars. We present the first results of our survey with the extreme AO instrument MagAO-X, called the Pup Search, of 18 targets with seven new candidate companions, five of which are confirmed to be white dwarfs. We discuss the new detections in the context of previous surveys and other detection metric sensitivities and show that we are sensitive to a region not probed by other surveys. Finally we discuss the future of the Pup Search in light of developing technologies.
title	Five New Sirius-Like White Dwarf + Main Sequence Star Systems with MagAO-X
topic	Solar and Stellar Astrophysics
url	https://arxiv.org/abs/2505.14439