2024ApJ...972....6T

Query : 2024ApJ...972....6T

2024ApJ...972....6T - Astrophys. J., 972, 6 (2024/September-1)

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

TANDOI C., GUNS S., FOSTER A., ADE P.A.R., ANDERSON A.J., ANSARINEJAD B., ARCHIPLEY M., BALKENHOL L., BENABED K., BENDER A.N., BENSON B.A., BIANCHINI F., BLEEM L.E., BOUCHET F.R., BRYANT L., CAMPHUIS E., CARLSTROM J.E., CECIL T.W., CHANG C.L., CHAUBAL P., CHICHURA P.M., CHOU T.-L., COERVER A., CRAWFORD T.M., CUKIERMAN A., DALEY C., DE HAAN T., DIBERT K.R., DOBBS M.A., DOUSSOT A., DUTCHER D., EVERETT W., FENG C., FERGUSON K.R., FICHMAN K., GALLI S., GAMBREL A.E., GARDNER R.W., GE F., GOECKNER-WALD N., GUALTIERI R., GUIDI F., HALVERSON N.W., HIVON E., HOLDER G.P., HOLZAPFEL W.L., HOOD J.C., HUANG N., KERUZORE F., KNOX L., KORMAN M., KORNOELJE K., KUO C.-L., LEE A.T., LEVY K., LOWITZ A.E., LU C., MANIYAR A., MENANTEAU F., MILLEA M., MONTGOMERY J., MOON Y., NAKATO Y., NATOLI T., NOBLE G.I., NOVOSAD V., OMORI Y., PADIN S., PAN Z., PASCHOS P., PHADKE K.A., PRABHU K., QU Z., QUAN W., RAHIMI M., RAHLIN A., REICHARDT C.L., REUTER C., ROUBLE M., RUHL J.E., SCHIAPPUCCI E., SMECHER G., SOBRIN J.A., STARK A.A., STEPHEN J., SUZUKI A., THOMPSON K.L., THORNE B., TRENDAFILOVA C., TUCKER C., UMILTA C., VIEIRA J.D., WAN Y., WANG G., WHITEHORN N., WU W.L.K., YEFREMENKO V., YOUNG M.R. and ZEBROWSKI J.A.

Abstract (from CDS):

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 20h40m0s to 3h20m0s 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 νLν luminosities range from 1027 to 1031 erg s–1 in the SPT-3G frequency bands.

Abstract Copyright: © 2024. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Millimeter astronomy - Transient detection - Transient sources - Flare stars - Stellar flares

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

Simbad objects: 23

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Number of rows : 23
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 Gaia DR3 4979859106192681344 PM* 00 25 50.9638876369 -46 19 35.472491327           ~ 2 0
2 UCAC2 3219919 EB* 00 51 42.7817415504 -64 57 16.453705140   12.69 11.89 11.60 10.89 ~ 6 0
3 HD 5578 ** 00 56 55.4414002176 -51 52 31.766387304   10.61 9.053   7.882 K3Ve 47 0
4 SCR J0103-5515 SB* 01 03 35.655120 -55 15 56.24316   16.99 15.40 14.96 12.09 M4.5Ve 54 0
5 V* BC Phe RS* 01 22 18.9828131016 -56 43 53.210629740   9.63 8.920   8.070 G8III(e) 61 0
6 V* ER Eri RS* 02 10 07.9134630600 -54 30 40.270850388   10.95 9.85 9.96 8.808 K1IIIe 28 1
7 1RXS J021329.9-465452 ** 02 13 30.215232 -46 54 50.53032   15.290 13.851 13.469   M3.0Ve 15 0
8 RX J0222.7-6022 PM* 02 22 44.1541907952 -60 22 47.628540948   14.902 13.365 13.038   M3.5Ve 43 0
9 V* CC Eri BY* 02 34 22.5661889568 -43 47 46.869120096 11.305 10.201 8.865 7.926 6.992 K7V 285 0
10 CD-58 538 ** 02 39 01.1714004 -58 11 13.719947 12.111 10.995 9.552 8.628 7.679 M0Ve 54 0
11 CD-53 544 PM* 02 41 46.8336541680 -52 59 52.395906048   11.49 10.281 9.992 8.305 K6Ve 65 0
12 HD 19818 * 03 08 26.0857999200 -59 22 25.393466964   9.17 9.06     B9/A0Vn(e) 28 0
13 HD 20121 ** 03 12 25.74558 -44 25 10.7932   6.37 5.93     A8V+F3V 102 0
14 * eps Eri BY* 03 32 55.8444911587 -09 27 29.739493865 5.19 4.61 3.73 3.00 2.54 K2V 2073 1
15 NAME Proxima Centauri PM* 14 29 42.9461331854 -62 40 46.164680672 14.21 12.95 11.13 9.45 7.41 M5.5Ve 1483 0
16 CD-54 8764 * 20 44 20.9003131392 -53 51 02.854833012   10.96 10.09 9.6 9.129 K1IIIe 13 0
17 CD-50 13207 BY* 21 01 21.2058398736 -49 33 07.339961016     11.051   9.724 K7 11 0
18 2MASS J21083826-4244540 Er* 21 08 38.262072 -42 44 54.06432       14.87 11.79 M4.4 9 0
19 CD-55 8799 Ro* 21 20 44.0932507872 -54 37 59.278211976   11.76 10.73   9.391 K0III 13 0
20 HD 204353 PM* 21 30 25.0011343872 -60 12 24.975765900   8.56 7.754   6.806 G5III 29 0
21 V* Z Ind Ro* 21 54 24.3642932040 -49 56 41.256982068   11.76 10.61   9.340 K2IIIe 17 0
22 HD 208233 PM* 21 57 51.4678054992 -68 12 50.140046952   9.73 8.90   7.961 G9IV 57 0
23 HD 214257 BY* 22 38 35.6880504096 -63 34 21.363916872   9.94 8.99     G8/K1III/Vp 16 0

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