The Two Micron All Sky Survey (2MASS)
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Between 1997 June and 2001 February the Two Micron All Sky Survey (2MASS) collected 25.4 Tbytes of raw imaging data covering 99.998% of the celestial sphere in the near-infrared J (1.25 μm), H (1.65 μm), and K s (2.16 μm) bandpasses. Observations were conducted from two dedicated 1.3 m diameter telescopes located at Mount Hopkins, Arizona, and Cerro Tololo, Chile. The 7.8 s of integration time accumulated for each point on the sky and strict quality control yielded a 10 σ point-source detection level of better than 15.8, 15.1, and 14.3 mag at the J , H , and K s bands, respectively, for virtually the entire sky. Bright source extractions have 1 σ photometric uncertainty of <0.03 mag and astrometric accuracy of order 100 mas. Calibration offsets between any two points in the sky are <0.02 mag. The 2MASS All-Sky Data Release includes 4.1 million compressed FITS images covering the entire sky, 471 million source extractions in a Point Source Catalog, and 1.6 million objects identified as extended in an Extended Source Catalog.
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The spectral energy distribution for J1407 is consistent with a lightly reddened K5 star (E(B-V) = 0.09, A_V about 0.32 mag), with no evidence for infrared excess.
“The spectral energy distribution for the star (plotted in Figure 1) is consistent with a lightly reddened K5 star (E(B -V ) = 0.09, A V 0.32 mag), with no evidence for infrared excess”
From PLANETARY CONSTRUCTION ZONES IN OCCULTATION: DISCOVERY OF AN EXTRASOLAR RING SYSTEM TRANSITING A YOUNG SUN-LIKE STAR AND FUTURE PROSPECTS FOR DETECTING ECLIPSES BY CIRCUMSECONDARY AND CIRCUMPLANETARY DISKS (2012) · cites this paper as Skrutskie et al. 2006
Section 5.2.4, Photometric Accuracy, describes 2MASS stellar photometry, but does not analyze J1407. Searches for J1407, the stated reddening values, a K5 spectral-energy-distribution fit, and infrared excess found no passage addressing those conclusions in our copy; page numbers were not available. (LLM, conf=0.76)
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“We have adopted V magnitudes and B-V and V-IC colors from the Hipparcos (Perryman & ESA 1997) catalog and JHKS photometry from 2MASS (Skrutskie et al. 2006).”
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“2MASS The Two-Micron All-Sky Survey (2MASS; Skrutskie et al. 2006) observed the entire sky in the J, H, and Ks bands over the interval of 1998–2002.”
MethodMamajek, E. E., Quillen, A. C., Pecaut, M. J., Moolekamp, F., Scott, E. L., Kenworthy, M. A., Cameron, A. C., & Parley, N. R. (2012) · The Astronomical Journal · doi:10.1088/0004-6256/143/3/72 · Cited by 140 · see citing works
“1) is consistent with a lightly reddened K5 star (E(B-V) = 0.09, AV ≃ 0.32 mag), with no evidence for infrared excess (via 2MASS and WISE preliminary release photometry; Skrutskie et al. 2006; Wright et al. 2010).”
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“Finally, the absolute astrometric frame was registered using X-ray sources with counterparts in the 2MASS catalog (Skrutskie et al. 2006), making it accurate to 0.”
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“Spectroscopic follow-up using the CTIO 1.5m telescope confirmed the object to be a young, Li-rich K5 star, lacking any accretion indicators (Mamajek et al. 2012) or infrared excess at short (2MASS; Skrutskie et al. 2006) and long wavelengths (WISE photometry; Wright et al. 2010).”
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- Authors
- Skrutskie, M. F., Cutri, R. M., Stiening, R., Weinberg, M. D., Schneider, S., Carpenter, J. M., Beichman, C., Capps, R., Chester, T., Elias, J., Huchra, J., Liebert, J., Lonsdale, C., Monet, D. G., Price, S., Seitzer, P., Jarrett, T., Kirkpatrick, J. D., Gizis, J. E., Howard, E., Evans, T., Fowler, J., Fullmer, L., Hurt, R., Light, R., Kopan, E. L., Marsh, K. A., McCallon, H. L., Tam, R., Van Dyk, S., & Wheelock, S.
- Affiliations
- University of Massachusetts Amherst (US)
- California Institute of Technology (US)
- Jet Propulsion Laboratory (US)
- Center for Astrophysics Harvard & Smithsonian (US)
- University of Arizona (US)
- United States Naval Observatory (US)
- United States Air Force Research Laboratory (US)
- University of Michigan (US)
- ORCID
- Venue
- The Astronomical Journal
- Publisher
- American Astronomical Society
- Published
- 2006-02
- Volume
- 131
- Issue
- 2
- Pages
- 1163-1183
- ISSN
- 0004-6256 (ISSN-L)
- 1538-3881
- OpenAlex
- W2142220522
- Semantic Scholar
- 308ae934b11e395b1a81ca0cd44db1aa382e2121
- Cited by
- 12,019
- References
- 21
- Citations by year
- 2026: 392 · 2025: 651 · 2024: 602 · 2023: 603 · 2022: 627 · 2021: 694 · 2020: 701 · 2019: 647 · 2018: 743 · 2017: 644 · 2016: 807 · 2015: 665 · 2014: 660 · 2013: 638 · 2012: 638
- FWCI
- 486.17
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- The Astronomical Journal (publishedVersion)
- Scholarworks (University of Massachusetts Amherst) (submittedVersion)
- ScholarWorks@UMassAmherst (University of Massachusetts Amherst) (submittedVersion)
- American Astronomical Society Meeting Abstracts
- University of Massachusetts (UMass) Amherst
- Funders
- National Science Foundation
- Smithsonian Institution
- National Aeronautics and Space Administration
- California Institute of Technology
- Johns Hopkins University
- Smithsonian Astrophysical Observatory
- U.S. Naval Observatory
- Topics
- Physical Sciences › Physics and Astronomy › Instrumentation › Astronomy and Astrophysical Research
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Stellar, planetary, and galactic studies
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Galaxies: Formation, Evolution, Phenomena
- Keywords
- 2MASS, near-infrared imaging, all-sky survey, point source detection, photometric calibration, astrometric accuracy, source extraction, point source catalog, FITS images
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