Pith. Sign in

RECORD

Asteroseismic age constraints on the open cluster NGC 2477 using oscillating stars identified with TESS FFI

PaperPDF from arXiv

data files

Paper breakdownThe authors' claims, conditions and measurements, as JSON Signed receiptProof this review has not been altered
X Bluesky LinkedIn Reddit Hacker News
D. B. Palakkatharappil, O. L. Creevey

Solar and Stellar Astrophysics · Submitted 21 Mar 2023

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim We conclude that using the TESS FFI data, we can identify oscillating stars in clusters, which allows us to better refine their ages.

how it is stated · hedged possibility 0.66 read the record →

Comment (0) Read on arXiv ↗
Cite ▾
arXiv ID2303.12205 (version 1)
Pith IDBNMETCRM, Pith's permanent record of this paper and its review
CitationD. B. Palakkatharappil, O. L. Creevey. "Asteroseismic age constraints on the open cluster NGC 2477 using oscillating stars identified with TESS FFI." arXiv:2303.12205 (2023). https://pith.science/paper/BNMETCRM
Claim paper

The compiled record

The paper's own sentences, arranged. Each label is drawn from a closed vocabulary; the number beside it is the probability the classifier gave that label. Numbers in the tables are the authors', checked by code. No sentence in this record was written by a model.

Open the compiled record

Compiled by classifier-1.13.0 via TypeSafe API, question bank abstract-p1-20260923, 2026-09-23: 1 request, 9,066 input tokens.

What the abstract itself states, as probabilities: claims first 0.03 · states limitation 0.25 · human participants 0.01 · controlled comparison 0.38 · randomized assignment 0.01 · states quantitative result 0.99 · compares with prior results 0.89 · mentions code or data availability 0.04.

The abstract, sentence by sentence

arXiv listing abstract v1. Results and the main claim are underlined; .

The ages of pulsating stars in clusters can be determined by isochrone fitting and it can be further improved by asteroseismic modelling. We analyse the intermediate-age open cluster NGC2477, known to suffer from differential extinction, to explore if asteroseismology and clusters characteristics can help understand the metallicity, extinction and result in better age determinations than isochrone-fitting alone. We combine a multitude of recent observations from Gaia, high-resolution spectroscopy, and extinction maps to analyse the cluster and then search for and detect variability in the member stars using TESS FFI data. To interpret all of these data, we used stellar structure, evolution and oscillation codes. We performed an isochrone fitting to the cluster using publically-available isochrones, which provides a cluster age of between 0.6 to 1.1 Ga. Then using TESS Full-frame images, we analysed the time dimension of the members of this cluster. We created optimised pixel light curves using the ${\tt tessipack}$ package which allows us to consider possible contamination by nearby stars. Using these light curves, we identified many interesting levels of variability of stars in this cluster, including binaries and oscillating stars. For the asteroseismic analysis, we selected a few uncontaminated A--F type oscillating stars and used the MESA and GYRE codes to interpret the frequency signals. By comparing the theoretical and the observed spectra, we identified frequency separations, $\Delta\nu$, for four stars. Then using the identified $\Delta\nu$ and imposing that the best matched theoretical models have the same age, metallicity and background extinction, we constrained the cluster's age to 1.0 $\pm$ 0.1 Ga. We conclude that using the TESS FFI data, we can identify oscillating stars in clusters, which allows us to better refine their ages.

background contribution method result interpretation main claim

What the classifier reports for each sentence. The number is the probability it gave the label.
#sentencerolethe authors' own workstates the main conclusionstrength
s0 The ages of pulsating stars in clusters can be determined by isochrone fitting and it can be further improved by asteroseismic modelling. background 1.00 0.05 0.05 asserted 0.90
s1 We analyse the intermediate-age open cluster NGC2477, known to suffer from differential extinction, to explore if asteroseismology and clusters characteristics can help understand the metallicity, extinction and result in better age determinations than isochrone-fitting alone. contribution 0.91 0.33 0.04 hedged possibility 0.63
s2 We combine a multitude of recent observations from Gaia, high-resolution spectroscopy, and extinction maps to analyse the cluster and then search for and detect variability in the member stars using TESS FFI data. method 0.97 0.93 0.02 asserted 0.92
s3 To interpret all of these data, we used stellar structure, evolution and oscillation codes. method 1.00 0.90 0.02 asserted 0.97
s4 We performed an isochrone fitting to the cluster using publically-available isochrones, which provides a cluster age of between 0.6 to 1.1 Ga. result 0.93 0.94 0.04 asserted 1.00
s5 Then using TESS Full-frame images, we analysed the time dimension of the members of this cluster. method 0.98 0.95 0.02 asserted 0.98
s6 We created optimised pixel light curves using the ${\tt tessipack}$ package which allows us to consider possible contamination by nearby stars. method 1.00 0.91 0.02 asserted 0.91
s7 Using these light curves, we identified many interesting levels of variability of stars in this cluster, including binaries and oscillating stars. result 0.91 0.96 0.04 asserted 1.00
s8 For the asteroseismic analysis, we selected a few uncontaminated A--F type oscillating stars and used the MESA and GYRE codes to interpret the frequency signals. method 1.00 0.96 0.03 asserted 0.99
s9 By comparing the theoretical and the observed spectra, we identified frequency separations, $\Delta\nu$, for four stars. result 0.76 0.96 0.03 asserted 1.00
s10 Then using the identified $\Delta\nu$ and imposing that the best matched theoretical models have the same age, metallicity and background extinction, we constrained the cluster's age to 1.0 $\pm$ 0.1 Ga. result 0.98 0.97 0.38 asserted 1.00
s11 We conclude that using the TESS FFI data, we can identify oscillating stars in clusters, which allows us to better refine their ages. interpretation 0.90 0.93 0.95 hedged possibility 0.66

What kind of paper the classifier reports this is: empirical study 1.00 · evidence from analysis of existing data 0.89.

What was examined, and what was not

sources read
  • arXiv listing abstract v1
not examined
  • full text
  • figures and tables
  • references and citing sentences
  • relations to other papers
levels run
  • P abstract
not run
  • S sections
  • T body sentences
  • C citations
  • R cross-paper relations

Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. Every number in the measurements table is the authors', checked by code. Record as JSON

The paper
Original abstract

The ages of pulsating stars in clusters can be determined by isochrone fitting and it can be further improved by asteroseismic modelling. We analyse the intermediate-age open cluster NGC2477, known to suffer from differential extinction, to explore if asteroseismology and clusters characteristics can help understand the metallicity, extinction and result in better age determinations than isochrone-fitting alone. We combine a multitude of recent observations from Gaia, high-resolution spectroscopy, and extinction maps to analyse the cluster and then search for and detect variability in the member stars using TESS FFI data. To interpret all of these data, we used stellar structure, evolution and oscillation codes. We performed an isochrone fitting to the cluster using publically-available isochrones, which provides a cluster age of between 0.6 to 1.1 Ga. Then using TESS Full-frame images, we analysed the time dimension of the members of this cluster. We created optimised pixel light curves using the ${\tt tessipack}$ package which allows us to consider possible contamination by nearby stars. Using these light curves, we identified many interesting levels of variability of stars in this cluster, including binaries and oscillating stars. For the asteroseismic analysis, we selected a few uncontaminated A--F type oscillating stars and used the MESA and GYRE codes to interpret the frequency signals. By comparing the theoretical and the observed spectra, we identified frequency separations, $\Delta\nu$, for four stars. Then using the identified $\Delta\nu$ and imposing that the best matched theoretical models have the same age, metallicity and background extinction, we constrained the cluster's age to 1.0 $\pm$ 0.1 Ga. We conclude that using the TESS FFI data, we can identify oscillating stars in clusters, which allows us to better refine their ages.

Human review

How Pith checks papers → · Full audit of this paper →

How the literature uses it

2 arXiv papers cite this in 2 sentences

Each citing sentence is taken from the citing paper's LaTeX source and typed by Pith's classifier. A label appears at probability 0.8 or more (0.95 for support), a contest at 0.7 or more; the quoted words are the citing authors'. How each label was checked · JSON

Papers citing it · 1 sentence without a confident label

Cites it as background 1 paper

What it cites · 3 sentences without a confident label

Uses the method or tool of 1 paper

Discussion

Know something about this paper? Leave a comment, or highlight any passage above to comment on it.