Open Access

Astrophysical Journal

, volume 972 , issue 1 , pages 6

Flaring Stars in a Nontargeted Millimeter-wave Survey with SPT-3G

C. Tandoi ¹

S. Guns ²

A. Foster ³

P. A. R. Ade ⁴

A. J. Anderson ^{5, 6, 7}

B. Ansarinejad ⁸

M. Archipley ^{1, 9}

L. Balkenhol ¹⁰

K. Benabed ¹⁰

A. N. Bender ^{7, 11}

B. A. Benson ^{5, 6, 7}

F. Bianchini ^{12, 13, 14}

L. E. Bleem ^{7, 11}

F. R. Bouchet ¹⁰

L Bryant ¹⁵

E. Camphuis ¹⁰

John E. Carlstrom ^{5, 7, 11, 15, 16}

T. Cecil ¹¹

C. L. Chang ^{5, 7, 11}

P. Chaubal ⁸

P. M. Chichura ^{7, 16}

Ti Lin Chou ^{7, 16}

A. Coerver ²

T.D. Crawford ^{5, 7}

A. Cukierman ^{12, 13, 14}

Cail M. Daley ¹

T. de Haan ¹⁷

K. R. Dibert ^{5, 7}

M. A. Dobbs ^{18, 19}

A Doussot ¹⁰

Daniel Dutcher ³

W. Everett ²⁰

C. Feng ²¹

K. R. Ferguson ²²

K. Fichman ^{7, 16}

Silvia Galli ¹⁰

A. E. Gambrel ⁷

R. W. Gardner ¹⁵

F. Ge ²³

N. Goeckner-Wald ^{12, 13}

R. Gualtieri ²⁴

F. Guidi ¹⁰

Nils W. Halverson ^{25, 26}

E. Hivon ¹⁰

Gilbert P. Holder ²¹

W.L. Holzapfel ²

J C Hood ⁷

N. Huang ²

F. Kéruzoré ¹¹

L. Knox ²³

M. Korman ²⁷

K. Kornoelje ^{5, 7, 11}

C. L. Kuo ^{12, 13, 14}

Adrian T. Lee ^{2, 28}

Karen M. Levy ⁸

A. Lowitz ⁷

C. Lu ²¹

Abhishek S. Maniyar ^{12, 13, 14}

F. Menanteau ^{1, 9}

M. Millea ²

J. Montgomery ¹⁹

YJ Moon ¹

Y. Nakato ¹²

T. Natoli ⁷

G. I. Noble ^{29, 30}

V. Novosad ³¹

Y. Omori ^{5, 7}

S. Padin ^{7, 32}

Z. Pan ^{7, 11, 16}

P. Paschos ¹⁵

K. A. Phadke ^{1, 9}

K Prabhu ²³

Z. Qu ¹

W. Quan ^{7, 16}

M. Rahimi ⁸

A. S. Rahlin ^{6, 7}

C. L. Reichardt ⁸

Cassie Reuter ¹

M Rouble ¹⁹

J.E. Ruhl ²⁷

E. Schiappucci ⁸

G. Smecher ³³

J. A. Sobrin ^{6, 7}

Antony A. Stark ³⁴

J. Stephen ¹⁵

A. Suzuki ²⁸

K. L. Thompson ^{12, 13, 14}

B. Thorne ²³

Cynthia Trendafilova ⁹

Carole Tucker ⁴

C. Umilta ²¹

J. D. Vieira ^{1, 9, 21}

Yuhang Wan ^{1, 9}

G. Wang ¹¹

N. Whitehorn ³⁵

W. L. K. Wu ^{13, 14}

V. Yefremenko ¹¹

M. R. Young ^{6, 7}

J. A. Zebrowski ^{5, 6, 7}

Hide authors affiliations Show authors affiliations: 35 affiliations

Department of Astronomy, University of Illinois Urbana–Champaign, 1002 West Green Street, Urbana, IL 61801, USA |

Department of Physics, University of California, Berkeley, Berkeley, CA 94720, USA |

Joseph Henry Laboratories of Physics, Jadwin Hall, Princeton University, Princeton, NJ 08544, USA |

⁴

School of Physics and Astronomy, Cardiff University, Cardiff CF24 3YB, UK |

⁵

Department of Astronomy and Astrophysics, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637, USA |

⁶

Fermi National Accelerator Laboratory, MS209, P.O. Box 500, Batavia, IL 60510, USA |

⁷

Kavli Institute for Cosmological Physics, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637, USA |

⁸

School of Physics, University of Melbourne, Parkville, Vic 3010, Australia |

⁹

Center for Astrophysical Surveys, National Center for Supercomputing Applications, Urbana, IL 61801, USA |

¹⁰

Sorbonne Université, CNRS, UMR 7095, Institut d'Astrophysique de Paris, 98 bis bd Arago, 75014 Paris, France

Sorbonne University

Paris Institute of Astrophysics

¹¹

High-Energy Physics Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, IL 60439, USA |

¹²

Department of Physics, Stanford University, 382 Via Pueblo Mall, Stanford, CA 94305, USA |

¹³

Kavli Institute for Particle Astrophysics and Cosmology, Stanford University, 452 Lomita Mall, Stanford, CA 94305, USA

Kavli Institute for Particle Astrophysics and Cosmology

Stanford University

¹⁴

SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA |

¹⁵

Enrico Fermi Institute, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637, USA |

¹⁶

Department of Physics, University of Chicago, 5640 South Ellis Avenue, Chicago, IL 60637, USA |

¹⁷

High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan |

¹⁸

Canadian Institute for Advanced Research, CIFAR Program in Gravity and the Extreme Universe, Toronto, ON M5G 1Z8, Canada |

¹⁹

Department of Physics and McGill Space Institute, McGill University, 3600 rue University, Montreal, QC H3A 2T8, Canada |

²⁰

Department of Astrophysical and Planetary Sciences, University of Colorado, Boulder, CO 80309, USA |

²¹

Department of Physics, University of Illinois Urbana–Champaign, 1110 West Green Street, Urbana, IL 61801, USA |

²²

Department of Physics and Astronomy, University of California, Los Angeles, Los Angeles, CA 90095, USA |

²³

Department of Physics & Astronomy, University of California, Davis, One Shields Avenue, Davis, CA 95616, USA |

²⁴

Department of Physics and Astronomy, Northwestern University, 633 Clark Street, Evanston, IL 60208, USA |

²⁵

CASA, Department of Astrophysical and Planetary Sciences, University of Colorado, Boulder, CO 80309, USA |

²⁶

Department of Physics, University of Colorado, Boulder, CO 80309, USA |

²⁷

Department of Physics, Case Western Reserve University, Cleveland, OH 44106, USA |

²⁸

Physics Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA |

²⁹

David A. Dunlap Department of Astronomy & Astrophysics, University of Toronto, 50 St George Street, Toronto, ON M5S 3H4, Canada |

³⁰

Dunlap Institute for Astronomy & Astrophysics, University of Toronto, 50 St George Street, Toronto, ON M5S 3H4, Canada |

³¹

Materials Sciences Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, IL 60439, USA |

³²

California Institute of Technology, 1200 East California Boulevard, Pasadena, CA 91125, USA |

³³

Three-Speed Logic, Inc., Victoria, BC V8S 3Z5, Canada |

³⁴

Center for Astrophysics ∣ Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA |

³⁵

Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, USA |

Publication type: Journal Article

Publication date: 2024-08-21

American Astronomical Society

Astrophysical Journal

scimago Q1

wos Q1

SJR: 2.038

CiteScore: 8.4

Impact factor: 5.4

ISSN: 0004637X, 15384357

DOI: 10.3847/1538-4357/ad58db

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Abstract

We present a flare star catalog from 4 yr of nontargeted millimeter-wave survey data from the South Pole Telescope (SPT). The data were taken with the SPT-3G camera and cover a 1500 deg² region of the sky from 20^h40^m0^s to 3^h20^m0^s in right ascension and from −42° to −70° in declination. This region was observed on a nearly daily cadence from 2019 to 2022 and chosen to avoid the plane of the galaxy. A short-duration transient search of this survey yields 111 flaring events from 66 stars, increasing the number of both flaring events and detected flare stars by an order of magnitude from the previous SPT-3G data release. We provide cross-matching to Gaia DR3, as well as matches to X-ray point sources found in the second ROSAT all-sky survey. We have detected flaring stars across the main sequence, from early-type A stars to M dwarfs, as well as a large population of evolved stars. These stars are mostly nearby, spanning 10–1000 pc in distance. Most of the flare spectral indices are constant or gently rising as a function of frequency at 95/150/220 GHz. The timescale of these events can range from minutes to hours, and the peak ν L _ν luminosities range from 10²⁷ to 10³¹ erg s⁻¹ in the SPT-3G frequency bands.

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Tandoi C. et al. Flaring Stars in a Nontargeted Millimeter-wave Survey with SPT-3G // Astrophysical Journal. 2024. Vol. 972. No. 1. p. 6.

GOST all authors (up to 50) Copy

Tandoi C. et al. Flaring Stars in a Nontargeted Millimeter-wave Survey with SPT-3G // Astrophysical Journal. 2024. Vol. 972. No. 1. p. 6.

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BibTex (up to 50 authors) Copy

@article{2024_Tandoi,

author = {C. Tandoi and S. Guns and A. Foster and P. A. R. Ade and A. J. Anderson and B. Ansarinejad and M. Archipley and L. Balkenhol and K. Benabed and A. N. Bender and B. A. Benson and F. Bianchini and L. E. Bleem and F. R. Bouchet and L Bryant and E. Camphuis and John E. Carlstrom and T. Cecil and C. L. Chang and P. Chaubal and P. M. Chichura and Ti Lin Chou and A. Coerver and T.D. Crawford and A. Cukierman and Cail M. Daley and T. de Haan and K. R. Dibert and M. A. Dobbs and A Doussot and Daniel Dutcher and W. Everett and C. Feng and K. R. Ferguson and K. Fichman and Silvia Galli and A. E. Gambrel and R. W. Gardner and F. Ge and N. Goeckner-Wald and R. Gualtieri and F. Guidi and Nils W. Halverson and E. Hivon and Gilbert P. Holder and W.L. Holzapfel and J C Hood and N. Huang and F. Kéruzoré and L. Knox and others},

title = {Flaring Stars in a Nontargeted Millimeter-wave Survey with SPT-3G},

journal = {Astrophysical Journal},

year = {2024},

volume = {972},

publisher = {American Astronomical Society},

month = {aug},

url = {https://iopscience.iop.org/article/10.3847/1538-4357/ad58db},

number = {1},

pages = {6},

doi = {10.3847/1538-4357/ad58db}

}

MLA

Cite this

MLA Copy

Tandoi, C., et al. “Flaring Stars in a Nontargeted Millimeter-wave Survey with SPT-3G.” Astrophysical Journal, vol. 972, no. 1, Aug. 2024, p. 6. https://iopscience.iop.org/article/10.3847/1538-4357/ad58db.

Publisher

American Astronomical Society

Journal

Astrophysical Journal

scimago Q1

wos Q1

SJR

2.038

CiteScore

8.4

Impact factor

5.4

ISSN

0004637X (Print)

15384357 (Electronic)

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