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astro-ph.EP · Earth and Planetary Astrophysicsastro-ph.IM · Instrumentation and Methods for Astrophysics

QLP detrended flux gives smaller signed dip areas in four tested RZ Psc intervals in TESS Sector 57

We compare five public flux columns for four selected RZ Psc dimming intervals in TESS Sector 57. The test uses QLP and TESS-SPOC files for TIC 15693497, matched by native cadence ID. Each column has its own local baseline, with common samples and fit rules. Signed area is the sum of normalized deficits times the nominal 200-second cadence. The primary QLP detrended-to-raw area ratios are 0.0082, 0.0573, -0.0288, and 0.0201. All ratios remain below 0.14 for 18 tested baseline and interval rules per case. QLP flux with only systematics removed gives primary ratios from 0.9881 to 0.9997. TESS-SPOC PDC-to-raw ratios are from 1.0055 to 1.0207. The comparison locates a large change in the QLP detrended column for these intervals. The signed statistic permits cancellation. One case has a 5.17-hour data gap; only accepted samples enter its area. The cases are selected examples, not a complete sample. The result does not measure physical transit recovery, population completeness, or a comet size distribution. No new planet or comet is identified. The package contains original FITS files, source hashes, code, numerical results, figures, an independent primary calculation, and an offline reproduction check.

RZ Psc · TESS · QLP · TESS-SPOC · exocomets · light curves · detrending · signed dimming area · reproducibility

Admitted 2 citing publications

References

9
  1. usesdoi:10.3847/2041-8213/ae11a1

    This paper reports the RZ Psc dimming events and supplies the prior scientific context. Our four-case archive comparison does not repeat its eleanor extraction or physical population fit.

  2. usesdoi:10.17909/t9-r086-e880

    The QLP Sector 57 light curve for TIC 15693497 supplies SAP_FLUX, SYS_RM_FLUX, and DET_FLUX.

  3. usesdoi:10.17909/t9-wpz1-8s54

    The TESS-SPOC Sector 57 light curve supplies SAP_FLUX and PDCSAP_FLUX at matched TESS cadences.

  4. usesdoi:10.3847/2515-5172/abca2e

    This paper describes QLP photometry.

  5. usesdoi:10.3847/2515-5172/abca2d

    This paper describes the original QLP detrending and noise measures. The later Sector 56 change is documented by Kunimoto et al. (2022).

  6. usesdoi:10.3847/2515-5172/aca157

    The release notes describe the joint spline and pointing fit used for QLP detrending from Sector 56 onward.

  7. usesdoi:10.3847/2515-5172/abc9b3

    This paper describes the TESS-SPOC high-level science products.

  8. A fixed shape fit gives 2714 ppm in QLP raw flux and -65 ppm in QLP spline flux for the Sector 15 dip of TIC 229790952 sci:sha256:61a96a012f90abcc1b3739dfaf5d8001362daf37d3926a224563f109008aabbe

    This earlier SCI study found a large QLP fitted-depth change in another star. Our study adds four RZ Psc cases and a signed area measure. It does not reuse its data or code.

  9. Fixed-shape fits give smaller depths in TGLC PSF flux for two of three reported TESS exocomet events sci:sha256:47f30d35b46e1aaceb78fd8e6d24325dd24d5f44738f07930516fdd8be65c148

    This earlier SCI study compared fitted depths across archive products in other candidate exocomet events. It establishes related prior work. The current RZ Psc calculation is separate.

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