2021A&A...647A.168M


Query : 2021A&A...647A.168M

2021A&A...647A.168M - Astronomy and Astrophysics, volume 647A, 168-168 (2021/3-1)

Searching for solar-like oscillations in pre-main sequence stars using APOLLO. Can we find the young Sun?

MULLNER M., ZWINTZ K., CORSARO E., STEINDL T., POTRAVNOV I., GUENTHER E.W., KNIAZEV A. and GVARAMADZE V.

Abstract (from CDS):


Context. In recent years, our understanding of solar-like oscillations from main sequence to red giant stars has improved dramatically thanks to pristine data collected from space telescopes. One of the remaining open questions focuses on the observational identification of solar-like oscillations in pre-main sequence stars.
Aims. We aim to develop an improved method to search for solar-like oscillations in pre-main sequence stars and apply it to data collected by the Kepler K2 mission.
Methods. Our software APOLLO includes a novel way to detect low signal-to-noise ratio solar-like oscillations in the presence of a high background level.
Results. By calibrating our method using known solar-like oscillators from the main Kepler mission, we apply it to T Tauri stars observed by Kepler K2 and identify several candidate pre-main sequence solar-like oscillators.
Conclusions. We find that our method is robust even when applied to time-series of observational lengths as short as those obtained with the TESS satellite in one sector. We identify EPIC 205375290 as a possible candidate for solar-like oscillations in a pre-main sequence star with νmax≃242µHz. We also derive its fundamental parameters to be Teff=3670±180K, logg=3.85±0.3, vsini=8±1km/s, and about solar metallicity from a high-resolution spectrum obtained from the Keck archive.

Abstract Copyright: © ESO 2021

Journal keyword(s): asteroseismology - methods: data analysis - stars: interiors - stars: pre-main sequence - stars: solar-type - stars: individual: EPIC 205375290

Simbad objects: 16

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Number of rows : 16
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
#notes
1 UScoCTIO 75 LM* 16 00 30.2338702560 -23 34 45.615101448           M6e 38 0
2 [PGZ2001] J160245.4-193037 Y*O 16 02 45.4530310824 -19 30 37.934375436           M5e 23 0
3 [PGZ2001] J160722.4-201158 Y*O 16 07 22.4090455032 -20 11 58.285984740           M5.5 20 0
4 ASAS J160814-1908.7 Ro* 16 08 14.7441391872 -19 08 32.688788424   13.01 11.403   9.962 K2 40 0
5 2MASS J16083138-1802414 Y*O 16 08 31.3764180336 -18 02 41.465215824   14.0       M0 21 0
6 2MASS J16085673-2033460 Y*O 16 08 56.7301379616 -20 33 45.837138816   13.3       K5 28 0
7 1RXS J160941.7-221803 TT* 16 09 40.9929383688 -22 17 59.527565484   13.8 12.561   10.655 M0e 35 0
8 [PZ99] J161019.1-250230 TT* 16 10 19.1894233032 -25 02 30.224806764   13.50 11.978 11.55 10.26 K5V(e) 31 0
9 1RXS J161115.1-175741 Y*O 16 11 15.3441540480 -17 57 21.429672984           M1e 46 0
10 NAME Upper Sco Association As* 16 12 -23.4           ~ 1368 1
11 1RXS J161329.9-231122 TT* 16 13 29.2885211952 -23 11 07.577357064   12.5 11.660   10.231 K1 40 0
12 UCAC4 356-078075 Ro* 16 14 28.9301755776 -18 57 22.516495416       14.621 11.92 ~ 17 0
13 [PGZ2001] J161433.6-190013 Y*O 16 14 33.6717724656 -19 00 13.479169896           M3e 30 0
14 NAME Upper Sco-Cen As* 16 15 -24.2           ~ 1330 1
15 1RXS J162739.8-224519 TT* 16 27 39.5633275272 -22 45 23.131197504   12.91 11.647   10.101 K2IVe 30 0
16 TYC 3557-13-1 HB* 19 47 05.0836832112 +46 43 44.088015504   12.76 11.48     K1IV 25 0

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