The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
Star Formation in NGC 5194 (M51a). II. The Spatially Resolved Star Formation Law
Open accessAbstract
We have studied the relationship between the star formation rate (SFR), surface density, and gas surface density in the spiral galaxy M51a (NGC 5194), using multiwavelength data obtained as part of the Spitzer Infrared Nearby Galaxies Survey (SINGS). We introduce a new SFR index based on a linear combination of Hα emission-line and 24 μm continuum luminosities, which provides reliable extinction-corrected ionizing fluxes and SFR densities over a wide range of dust attenuations. The combination of these extinction-corrected SFR densities with aperture synthesis H I and CO maps has allowed us to probe the form of the spatially resolved star formation law on scales of 0.5-2 kpc. We find that the resolved SFR versus gas surface density relation is well represented by a Schmidt power law, which is similar in form and dispersion to the disk-averaged Schmidt law. We observe a comparably strong correlation of the SFR surface density with the molecular gas surface density, but no significant correlation with the surface density of atomic gas. The best-fitting slope of the Schmidt law varies from N = 1.37 to 1.56, with zero point and slope that change systematically with the spatial sampling scale. We tentatively attribute these variations to the effects of areal sampling and averaging of a nonlinear intrinsic star formation law. Our data can also be fitted by an alternative parameterization of the SFR surface density in terms of the ratio of gas surface density to local dynamical time, but with a considerable dispersion.
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
On the Gravitational Stability of a Disk of Stars
Toomre, A. (1964) · The Astrophysical Journal · doi:10.1086/147861 · Cited by 3,349 · cited 1×
“…threshold effects we calculated for each region the expected critical density using the relation of Kennicutt (1989), which is based on applying the Toomre (1964) gas stability criterion for an isothermal disk of gas clouds: Σc = α κc πG (9) where Σc is the critical (total) gas surface density for…”
Method
Cited by
Star Formation in the Milky Way and Nearby Galaxies
Kennicutt, R. C., & Evans, N. J. (2012) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev-astro-081811-125610 · Cited by 2,902
“Other authors however have reported steeper dependences (N = 1.2–1.7), closer to those seen in integrated measurements (e.g., Kennicutt et al. 2007; Verley et al. 2010; Rahman et al. 2011; Liu et al. 2011; Momose 2012).”
BackgroundInfluentialSelf-citationTHE STAR FORMATION EFFICIENCY IN NEARBY GALAXIES: MEASURING WHERE GAS FORMS STARS EFFECTIVELY
Leroy, A. K., Walter, F., Brinks, E., Bigiel, F., de Blok, W. J. G., Madore, B., & Thornley, M. D. (2008) · The Astronomical Journal · doi:10.1088/0004-6256/136/6/2782 · Cited by 1,919
Self-citationTHE SPITZER c2d LEGACY RESULTS: STAR-FORMATION RATES AND EFFICIENCIES; EVOLUTION AND LIFETIMES
Evans, N. J., Dunham, M. M., Jørgensen, J. K., Enoch, M. L., Merín, B., van Dishoeck, E. F., Alcalá, J. M., Myers, P. C., Stapelfeldt, K. R., Huard, T. L., et al. (2009) · The Astrophysical Journal Supplement Series · doi:10.1088/0067-0049/181/2/321 · Cited by 1,649
Modeling the Panchromatic Spectral Energy Distributions of Galaxies
Conroy, C. (2013) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev-astro-082812-141017 · Cited by 959
Murphy, E. J., Condon, J. J., Schinnerer, E., Kennicutt, R. C., Calzetti, D., Armus, L., Helou, G., Turner, J. L., Aniano, G., Beirão, P., et al. (2011) · The Astrophysical Journal · doi:10.1088/0004-637x/737/2/67 · Cited by 852
Self-citation
Metadata
- Authors
- Kennicutt, Jr., Calzetti, D., Walter, F., Helou, G., Hollenbach, D. J., Armus, L., Bendo, G., Dale, D. A., Draine, B. T., Engelbracht, C. W., Gordon, K. D., Prescott, M. K. M., Regan, M. W., Thornley, M. D., Bot, C., Brinks, E., de Blok, E., de Mello, D., Meyer, M., Moustakas, J., Murphy, E. J., Sheth, K., & Smith, J. D. T.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 2007-12-10
- Volume
- 671
- Issue
- 1
- Pages
- 333-348
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W2155593555
- Cited by
- 569
- References
- 1
- FWCI
- 24.16
- 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: Star Formation in NGC 5194 (M51a). II. The Spatially Resolved Star Formation Law. https://app.cochat.ai/papers/10.1086/522300
- The paper
- Kennicutt, Jr., Calzetti, D., Walter, F., Helou, G., Hollenbach, D. J., Armus, L., Bendo, G., Dale, D. A., Draine, B. T., Engelbracht, C. W., Gordon, K. D., Prescott, M. K. M., Regan, M. W., Thornley, M. D., Bot, C., Brinks, E., de Blok, E., de Mello, D., Meyer, M., . . . Smith, J. D. T. (2007). Star Formation in NGC 5194 (M51a). II. The Spatially Resolved Star Formation Law. The Astrophysical Journal. https://doi.org/10.1086/522300
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.
