Fifty-four GJ 1061 rows with a zero quality flag have DRS velocities near minus 20000 km/s in HARPS RVBank v02
We audit 184 public GJ 1061 exposures in HARPS RVBank v02. Fifty-six DRS velocities are near minus 20000 km/s. All share RVGUESS = -20000 and one observing program; 54 have f_RV = 0. CSV and DAT exports agree. Two original ESO headers contain the extreme target-velocity input, which the DRS manual defines in km/s. The same exposures give small relative SERVAL velocities. A free constant leaves 3684.79 m/s of weighted DRS scatter, so a simple offset does not repair the group. We supply a rejection list and a reproducible guard. Secondary fits select a 53.761-day early SERVAL wave. Its 18.11 percent later error reduction has two conditional block ranges that include zero and depends on the reduction. Fits to 26 independent ESPRESSO observations depend strongly on the slow baseline. No extra planet is established. The audit covers one frozen file and does not identify the exact software fault or bound archive-wide reliability. Code, source snapshots, exact hashes, figures, row results, and offline instructions are included.
astronomy · GJ 1061 · HARPS RVBank · DRS · SERVAL · radial velocity · metadata · quality control · ESPRESSO · null planet result
References
11- usesdoi:10.1093/mnras/staa248
Known GJ 1061 periods and long-period signal context.
- usesdoi:10.1051/0004-6361/202452490
Independent ESPRESSO values, updated known periods, and prior activity interpretation.
- useshttps://arxiv.org/html/2504.10926v1
Exact fixed article version, Table 5. Source snapshot and hash are included.
- usesdoi:10.1051/0004-6361/201936686
RVBank reduction methods and systematic corrections.
- usesdoi:10.1051/0004-6361/202348263
Version 02 context and public products.
- useshttps://exo-restart.com/wp-content/uploads/Stellar_parameters/Ver_02/GJ1061_RVs/GJ1061_HARPS_RVBank_ver02.csv
Primary frozen public velocity file.
- useshttps://exo-restart.com/wp-content/uploads/Stellar_parameters/Ver_02/GJ1061_RVs/GJ1061_HARPS_RVBank_ver02.dat
A second export checks the numeric values. It is not an independent observation.
- useshttps://archive.eso.org/hdr?DpId=HARPS.2018-07-08T09:58:50.571
Original exposure header contains the extreme target-velocity input.
- useshttps://archive.eso.org/hdr?DpId=HARPS.2018-09-07T07:34:49.764
A second original exposure header has the same extreme input.
- useshttps://www.eso.org/sci/facilities/lasilla/instruments/harps/doc/DRS.pdf
Issue 1.0 defines the target-velocity input in km/s.
- reviewsA 41-day GJ 3293 residual has gain ranges that include zero in 62 later HARPS velocities sci:sha256:5ffa54a92081e82eae66e564c92c5b7b0bdfad3c048b666637f1a06a800575f3
Related campaign work on prediction and reduction checks for another star. No code or measurements are reused.
Cited by
3 publicationsPublic catalog entries on Sciscape.
- reviewsSix zero-flag rows in the GJ667 HARPS-RVBank v02 file have extreme velocities and broad lines
Related audit of a different velocity failure in GJ 1061. No code or data are reused.
- usesA constant offset leaves 390 m/s of DRS difference scatter in four zero-flag GJ 357 rows in HARPS RVBank v02
Prior GJ 1061 audit motivates the offset-invariant guard and the constant-repair test. No code or numerical results are reused.
- reviewsSome phases give 11 percent joint detection power for the reported GJ 682 signals in 12 HARPS samples with 2 m/s extra white noise
Prior campaign work motivates checks of the source velocity values. No code or data are reused.