2022A&A...660A..49P


Query : 2022A&A...660A..49P

2022A&A...660A..49P - Astronomy and Astrophysics, volume 660A, 49-49 (2022/4-1)

New exocomets of β Pic.

PAVLENKO Y., KULYK I., SHUBINA O., VASYLENKO M., DOBRYCHEVA D. and KORSUN P.

Abstract (from CDS):


Aims. The aim of our work is to analyze the light curves of β Pic which were recently observed by the Transiting Exoplanet Survey Satellite (TESS) in sectors 32, 33, and 34 by searching for the signatures of exocomet transits.
Methods. We processed the β Pic light curves from the Mikulski Archive for Space Telescopes database, applying the frequency analysis to remove harmonic signals due to the star's pulsations, and we used a simple 1D model to fit the profiles of the events that were found.
Results. We recovered events previously found by other authors in sectors 5 and 6 and found five new distinct aperiodic dipping events with asymmetric shapes resembling the expected profiles due to the passage of a comet-like body across the star disk. These dips are rather shallow, with the flux drop at a level of 0.03% and a duration of less than 1 day. No periodic transits were found in the sectors investigated.
Conclusions. The depth and duration of the identified dips are similar to the recently discovered transits in the β Pic light curves from sector 5 of the TESS observations as well as to those found in the light curves of KIC 354116 and KIC 1108472 from the Kepler database. This indicates that aperiodic shallow dips are not likely an exceptional phenomenon, at least for the β Pic system.

Abstract Copyright: © ESO 2022

Journal keyword(s): binaries: general - stars: individual: beta Pictoris - planetary systems - methods: data analysis - comets: general

Simbad objects: 8

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Number of rows : 8
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 V* DF Tau TT* 04 27 02.7932020080 +25 42 22.453341516 11.97 12.25 11.42 10.31 9.14 M3Ve 500 1
2 * bet Pic PM* 05 47 17.0876901 -51 03 59.441135 4.13 4.03 3.86 3.74 3.58 A6V 1908 1
3 * bet Pic c Pl 05 47 17.0876901 -51 03 59.441135           ~ 62 0
4 * bet Pic b Pl 05 47 17.0876901 -51 03 59.441135           ~ 511 1
5 NAME beta Pic Moving Group MGr 14 30 -42.0           ~ 777 0
6 TYC 3134-1024-1 V* 19 22 52.9408736880 +38 41 41.489123208   10.41 9.98     ~ 17 0
7 BD+48 2901 V* 19 28 41.1974067960 +48 41 15.134864244   10.38 10.03     F5V 14 0
8 GSC 03162-00665 Er* 20 06 15.4526521026 +44 27 24.790869158   12.82 12.01 11.75   F3V 140 0

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