The DOI matches its Crossref record; 77 of the 77 references it cites were found in a registry or an index.
THE NASA-UC-UH ETA-EARTH PROGRAM. IV. A LOW-MASS PLANET ORBITING AN M DWARF 3.6 PC FROM EARTH
Open accessAbstract
We report the discovery of a low-mass planet orbiting Gl 15 A based on radial velocities from the Eta-Earth Survey using HIRES at Keck Observatory. Gl 15 Ab is a planet with minimum mass M sin i = 5.35 ± 0.75 M ⊕ , orbital period P = 11.4433 ± 0.0016 days, and an orbit that is consistent with circular. We characterize the host star using a variety of techniques. Photometric observations at Fairborn Observatory show no evidence for rotational modulation of spots at the orbital period to a limit of ∼0.1 mmag, thus supporting the existence of the planet. We detect a second RV signal with a period of 44 days that we attribute to rotational modulation of stellar surface features, as confirmed by optical photometry and the Ca ii H & K activity indicator. Using infrared spectroscopy from Palomar-TripleSpec, we measure an M2 V spectral type and a sub-solar metallicity ([M/H] = −0.22, [Fe/H] = −0.32). We measure a stellar radius of 0.3863 ± 0.0021 R ☉ based on interferometry from CHARA.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
Stochastic relaxation, gibbs distributions, and the bayesian restoration of images.
Geman, S., & Geman, D. (1984) · IEEE Transactions on Pattern Analysis and Machine Intelligence · doi:10.1109/tpami.1984.4767596 · Cited by 17,949
Monte Carlo sampling methods using Markov chains and their applications.
Hastings, W. K. (1970) · Biometrika · doi:10.1093/biomet/57.1.97 · Cited by 15,195
Kass, R. E., & Raftery, A. E. (1995) · Journal of the American Statistical Association · doi:10.1080/01621459.1995.10476572 · Cited by 12,558
Scargle, J. D. (1982) · The Astrophysical Journal · doi:10.1086/160554 · Cited by 7,376
Least-squares frequency analysis of unequally spaced data
Lomb, N. R. (1976) · Astrophysics and Space Science · doi:10.1007/bf00648343 · Cited by 5,717
Validation of the new Hipparcos reduction
van Leeuwen, F. (2007) · Astronomy & Astrophysics · doi:10.1051/0004-6361:20078357 · Cited by 3,736
The Dartmouth Stellar Evolution Database
Dotter, A., Chaboyer, B., Jevremović, D., Kostov, V., Baron, E., & Ferguson, J. W. (2008) · The Astrophysical Journal Supplement Series · doi:10.1086/589654 · Cited by 1,717
HIRES: the high-resolution echelle spectrometer on the Keck 10-m Telescope:
Vogt, S. S., Allen, S. L., Bigelow, B. C., Bresee, L., Brown, W. E., Cantrall, T., Conrad, A., Couture, M., Delaney, C., Epps, H. W., et al. (1994) · SPIE Proceedings · doi:10.1117/12.176725 · Cited by 1,606
A Stellar Spectral Flux Library: 1150–25000 Å
Pickles, A. J. (1998) · Publications of the Astronomical Society of the Pacific · doi:10.1086/316197 · Cited by 1,488
Valenti, J. A., & Fischer, D. A. (2005) · The Astrophysical Journal Supplement Series · doi:10.1086/430500 · Cited by 1,460
Self-citation
Cited by
Rosenthal, L. J., Fulton, B. J., Hirsch, L. A., Isaacson, H. T., Howard, A. W., Dedrick, C. M., Sherstyuk, I. A., Blunt, S. C., Petigura, E. A., Knutson, H. A., et al. (2021) · The Astrophysical Journal Supplement Series · doi:10.3847/1538-4365/abe23c · Cited by 341
Self-citationPerryman, M. (2018) · Cambridge University Press eBooks · doi:10.1017/9781108304160 · Cited by 340
Limits on Planetary Companions from Doppler Surveys of Nearby Stars
Howard, A. W., & Fulton, B. J. (2016) · Publications of the Astronomical Society of the Pacific · doi:10.1088/1538-3873/128/969/114401 · Cited by 285
Self-citationSTATISTICS OF LONG PERIOD GAS GIANT PLANETS IN KNOWN PLANETARY SYSTEMS
Bryan, M. L., Knutson, H. A., Howard, A. W., Ngo, H., Batygin, K., Crepp, J. R., Fulton, B. J., Hinkley, S., Isaacson, H., Johnson, J. A., et al. (2016) · The Astrophysical Journal · doi:10.3847/0004-637x/821/2/89 · Cited by 190
Self-citation
Metadata
- Authors
- Howard, A. W., Marcy, G. W., Fischer, D. A., Isaacson, H., Muirhead, P. S., Henry, G. W., Boyajian, T. S., von Braun, K., Becker, J. C., Wright, J. T., & Johnson, J. A.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 2014-09-23
- Volume
- 794
- Issue
- 1
- Pages
- 51
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W1967554429
- Cited by
- 298
- References
- 77
- FWCI
- 7.46
- Type
- journal article
- Language
- en
- Open access
- bronze
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: THE NASA-UC-UH ETA-EARTH PROGRAM. IV. A LOW-MASS PLANET ORBITING AN M DWARF 3.6 PC FROM EARTH. https://app.cochat.ai/papers/10.1088/0004-637x/794/1/51
- The paper
- Howard, A. W., Marcy, G. W., Fischer, D. A., Isaacson, H., Muirhead, P. S., Henry, G. W., Boyajian, T. S., von Braun, K., Becker, J. C., Wright, J. T., & Johnson, J. A. (2014). THE NASA-UC-UH ETA-EARTH PROGRAM. IV. A LOW-MASS PLANET ORBITING AN M DWARF 3.6 PC FROM EARTH. The Astrophysical Journal. https://doi.org/10.1088/0004-637x/794/1/51
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.