The DOI matches its Crossref record; 34 of the 34 references it cites were found in a registry or an index.
THE CHANDRA COSMOS LEGACY SURVEY: OVERVIEW AND POINT SOURCE CATALOG
Open accessAbstract
The COSMOS-Legacy survey is a 4.6 Ms Chandra program that has imaged 2.2 deg 2 of the COSMOS field with an effective exposure of ks over the central 1.5 deg 2 and of ks in the remaining area. The survey is the combination of 56 new observations obtained as an X-ray Visionary Project with the previous C-COSMOS survey. We describe the reduction and analysis of the new observations and the properties of 2273 point sources detected above a spurious probability of 2 × 10−5. We also present the updated properties of the C-COSMOS sources detected in the new data. The whole survey includes 4016 point sources (3814, 2920 and 2440 in the full, soft, and hard band). The limiting depths are 2.2 × 10−16, 1.5 × 10−15, and 8.9 × 10−16 in the 0.5–2, 2–10, and 0.5–10 keV bands, respectively. The observed fraction of obscured active galactic nuclei with a column density >10 22 cm−2 from the hardness ratio (HR) is ∼50 %. Given the large sample we compute source number counts in the hard and soft bands, significantly reducing the uncertainties of 5%–10%. For the first time we compute number counts for obscured (HR > −0.2) and unobscured (HR < −0.2) sources and find significant differences between the two populations in the soft band. Due to the unprecedent large exposure, COSMOS-Legacy area is three times larger than surveys at similar depths and its depth is three times fainter than surveys covering similar areas. The area-flux region occupied by COSMOS-Legacy is likely to remain unsurpassed for years to come.
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Kalberla, P. M. W., Burton, W. B., Hartmann, D., Arnal, E. M., Bajaja, E., Morras, R., & Pöppel, W. G. L. (2005) · Astronomy & Astrophysics · doi:10.1051/0004-6361:20041864 · Cited by 3,719
Kalberla, P. M. W., Burton, W. B., Hartmann, D., Arnal, E. M., Bajaja, E., Morras, R., & Pöppel, W. G. L. (2005) · Americanae (AECID Library) · doi:10.48550/arxiv.astro-ph/0504140 · Cited by 2,227
THE NUCLEAR SPECTROSCOPIC TELESCOPE ARRAY(NuSTAR) HIGH-ENERGY X-RAY MISSION
Harrison, F. A., Craig, W. W., Christensen, F. E., Hailey, C. J., Zhang, W. W., Boggs, S. E., Stern, D., Cook, W. R., Forster, K., Giommi, P., et al. (2013) · The Astrophysical Journal · doi:10.1088/0004-637x/770/2/103 · Cited by 2,224
Self-citationThe Cosmic Evolution Survey (COSMOS): Overview
Scoville, N., Aussel, H., Brusa, M., Capak, P., Carollo, C. M., Elvis, M., Giavalisco, M., Guzzo, L., Hasinger, G., Impey, C., et al. (2007) · The Astrophysical Journal Supplement Series · doi:10.1086/516585 · Cited by 2,007
Self-citationCIAO: Chandra's data analysis system
Fruscione, A., McDowell, J. C., Allen, G. E., Brickhouse, N. S., Burke, D. J., Davis, J. E., Durham, N., Elvis, M., Galle, E. C., Harris, D. E., et al. (2006) · SPIE Proceedings · doi:10.1117/12.671760 · Cited by 1,295
Self-citationCOSMOS PHOTOMETRIC REDSHIFTS WITH 30-BANDS FOR 2-deg2
Ilbert, O., Capak, P., Salvato, M., Aussel, H., McCracken, H. J., Sanders, D. B., Scoville, N., Kartaltepe, J., Arnouts, S., Floc'h, E. L., et al. (2009) · The Astrophysical Journal · doi:10.1088/0004-637x/690/2/1236 · Cited by 1,259
Self-citationThe synthesis of the cosmic X-ray background in the Chandra and XMM-Newton era
Gilli, R., Comastri, A., & Hasinger, G. (2007) · Astronomy & Astrophysics · doi:10.1051/0004-6361:20066334 · Cited by 908
Self-citationUltraVISTA: a new ultra-deep near-infrared survey in COSMOS
McCracken, H. J., Milvang-Jensen, B., Dunlop, J., Franx, M., Fynbo, J. P. U., Le Fèvre, O., Holt, J., Caputi, K. I., Goranova, Y., Buitrago, F., et al. (2012) · Astronomy & Astrophysics · doi:10.1051/0004-6361/201219507 · Cited by 829
The First Release COSMOS Optical and Near‐IR Data and Catalog
Capak, P., Aussel, H., Ajiki, M., McCracken, H. J., Mobasher, B., Scoville, N., Shopbell, P., Taniguchi, Y., Thompson, D., Tribiano, S., et al. (2007) · The Astrophysical Journal Supplement Series · doi:10.1086/519081 · Cited by 790
Self-citationAdvanced CCD imaging spectrometer (ACIS) instrument on the Chandra X-ray Observatory
Garmire, G. P., Bautz, M. W., Ford, P. G., Nousek, J. A., & Ricker, Jr. (2003) · SPIE Proceedings · doi:10.1117/12.461599 · Cited by 776
Cited by
What drives the growth of black holes: A decade of progress
Alexander, D. M., Hickox, R. C., Aird, J., Combes, F., Costa, T., Habouzit, M., Harrison, C. M., Leng, R. I., Morabito, L. K., Uckelman, S. L., et al. (2025) · New Astronomy Reviews · doi:10.1016/j.newar.2025.101733 · Cited by 18
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Metadata
- Authors
- Civano, F., Marchesi, S., Comastri, A., Urry, M. C., Elvis, M., Cappelluti, N., Puccetti, S., Brusa, M., Zamorani, G., Hasinger, G., Aldcroft, T., Alexander, D. M., Allevato, V., Brunner, H., Capak, P., Finoguenov, A., Fiore, F., Fruscione, A., Gilli, R., Glotfelty, K., Griffiths, R. E., Hao, H., Harrison, F. A., Jahnke, K., Kartaltepe, J., Karim, A., LaMassa, S. M., Lanzuisi, G., Miyaji, T., Ranalli, P., Salvato, M., Sargent, M., Scoville, N. J., Schawinski, K., Schinnerer, E., Silverman, J., Smolcic, V., Stern, D., Toft, S., Trakhenbrot, B., Treister, E., & Vignali, C.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 2016-02-29
- Volume
- 819
- Issue
- 1
- Pages
- 62
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W2230972173
- Cited by
- 507
- References
- 34
- FWCI
- 28.32
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Civano, F., Marchesi, S., Comastri, A., Urry, M. C., Elvis, M., Cappelluti, N., Puccetti, S., Brusa, M., Zamorani, G., Hasinger, G., Aldcroft, T., Alexander, D. M., Allevato, V., Brunner, H., Capak, P., Finoguenov, A., Fiore, F., Fruscione, A., Gilli, R., . . . Vignali, C. (2016). THE CHANDRA COSMOS LEGACY SURVEY: OVERVIEW AND POINT SOURCE CATALOG. The Astrophysical Journal. https://doi.org/10.3847/0004-637x/819/1/62
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