Outputs (374)

The NuSTAR Extragalactic Surveys: Source Catalog and the Compton-thick Fraction in the UDS Field (2018)
Journal Article
Masini, A., Civano, F., Comastri, A., Fornasini, F., Ballantyne, D., Lansbury, G., …Zappacosta, L. (2018). The NuSTAR Extragalactic Surveys: Source Catalog and the Compton-thick Fraction in the UDS Field. Astrophysical Journal Supplement, 235(1), Article 17. https://doi.org/10.3847/1538-4365/aaa83d

We present the results and the source catalog of the NuSTAR survey in the UKIDSS Ultra Deep Survey (UDS) field, bridging the gap in depth and area between NuSTAR's ECDFS and COSMOS surveys. The survey covers a ~0.6 deg2 area of the field for a total... Read More about The NuSTAR Extragalactic Surveys: Source Catalog and the Compton-thick Fraction in the UDS Field.

The NuSTAR Extragalactic Surveys: X-Ray Spectroscopic Analysis of the Bright Hard-band Selected Sample (2018)
Journal Article
Zappacosta, L., Comastri, A., Civano, F., Puccetti, S., Fiore, F., Aird, J., Moro, A. D., Lansbury, G. B., Lanzuisi, G., Goulding, A., Mullaney, J. R., Stern, D., Ajello, M., Alexander, D. M., Ballantyne, D. R., Bauer, F. E., Brandt, W. N., Chen, C.-. T. J., Farrah, D., Harrison, F. A., …Treister, E. (2018). The NuSTAR Extragalactic Surveys: X-Ray Spectroscopic Analysis of the Bright Hard-band Selected Sample. Astrophysical Journal, 854(1), Article 33. https://doi.org/10.3847/1538-4357/aaa550

We discuss the spectral analysis of a sample of 63 active galactic nuclei (AGN) detected above a limiting flux of S 8 24 keV 7 10 = ´ -14 (– ) erg s cm - - 1 2 in the multi-tiered NuSTAR extragalactic survey program. The sources span a redshift range... Read More about The NuSTAR Extragalactic Surveys: X-Ray Spectroscopic Analysis of the Bright Hard-band Selected Sample.

Evidence for Merger-driven Growth in Luminous, High-z, Obscured AGNs in the CANDELS/COSMOS Field (2018)
Journal Article
Donley, J., Kartaltepe, J., Kocevski, D., Salvato, M., Santini, P., Suh, H., …Nagao, T. (2018). Evidence for Merger-driven Growth in Luminous, High-z, Obscured AGNs in the CANDELS/COSMOS Field. Astrophysical Journal, 853(1), https://doi.org/10.3847/1538-4357/aa9ffa

We report the detection of GeV γ-ray emission from supernova remnant HESS J1731-347 using 9 yr of Fermi Large Area Telescope data. We find a slightly extended GeV source in the direction of HESS J1731-347. The spectrum above 1 GeV can be fitted by a... Read More about Evidence for Merger-driven Growth in Luminous, High-z, Obscured AGNs in the CANDELS/COSMOS Field.

Luminous and Obscured Quasars and Their Host Galaxies (2018)
Journal Article
Del Moro, A., Alexander, D. M., Bauer, F. E., Daddi, E., Kocevski, D. D., Stanley, F., & McIntosh, D. H. (2018). Luminous and Obscured Quasars and Their Host Galaxies. Frontiers in Astronomy and Space Sciences, 4, Article 67. https://doi.org/10.3389/fspas.2017.00067

The most heavily-obscured, luminous quasars might represent a specific phase of the evolution of the actively accreting supermassive black holes and their host galaxies, possibly related to mergers. We investigated a sample of the most luminous quasa... Read More about Luminous and Obscured Quasars and Their Host Galaxies.

Active galactic nuclei: what’s in a name? (2017)
Journal Article
Padovani, P., Alexander, D., Assef, R., De Marco, B., Giommi, P., Hickox, R., Richards, G., Smolčić, V., Hatziminaoglou, E., Mainieri, V., & Salvato, M. (2017). Active galactic nuclei: what’s in a name?. Astronomy and Astrophysics Review, 25(1), https://doi.org/10.1007/s00159-017-0102-9

Identifying the subtle signatures of feedback from distant AGN using ALMA observations and the EAGLE hydrodynamical simulations (2017)
Journal Article
Scholtz, J., Alexander, D., Harrison, C., Rosario, D., McAlpine, S., Mullaney, J., …Swinbank, A. (2018). Identifying the subtle signatures of feedback from distant AGN using ALMA observations and the EAGLE hydrodynamical simulations. Monthly Notices of the Royal Astronomical Society, 475(1), 1288-1305. https://doi.org/10.1093/mnras/stx3177

We present sensitive 870 μm continuum measurements from our ALMA programmes of 114 X-ray selected active galactic nuclei (AGN) in the Chandra Deep Field-South and Cosmic Evolution Survey fields. We use these observations in combination with data from... Read More about Identifying the subtle signatures of feedback from distant AGN using ALMA observations and the EAGLE hydrodynamical simulations.

Deep Submillimeter and Radio Observations in the SSA22 Field. I. Powering Sources and the Lyα Escape Fraction of Lyα Blobs (2017)
Journal Article
Ao, Y., Matsuda, Y., Henkel, C., Iono, D., Alexander, D., Chapman, S., …Weiss, A. (2017). Deep Submillimeter and Radio Observations in the SSA22 Field. I. Powering Sources and the Lyα Escape Fraction of Lyα Blobs. Astrophysical Journal, 850(2), Article 178. https://doi.org/10.3847/1538-4357/aa960f

We study the heating mechanisms and Lyα escape fractions of 35 Lyα blobs (LABs) at z ≈ 3.1 in the SSA22 field. Dust continuum sources have been identified in 11 of the 35 LABs, all with star formation rates (SFRs) above 100 M ⊙ yr−1. Likely radio cou... Read More about Deep Submillimeter and Radio Observations in the SSA22 Field. I. Powering Sources and the Lyα Escape Fraction of Lyα Blobs.

The NuSTAR Extragalactic Survey: Average Broadband X-Ray Spectral Properties of the NuSTAR-detected AGNs (2017)
Journal Article
Del Moro, A., Alexander, D., Aird, J., Bauer, F., Civano, F., Mullaney, J., …Zappacosta, L. (2017). The NuSTAR Extragalactic Survey: Average Broadband X-Ray Spectral Properties of the NuSTAR-detected AGNs. Astrophysical Journal, 849(1), Article 57. https://doi.org/10.3847/1538-4357/aa9115

We present a study of the average X-ray spectral properties of the sources detected by the NuSTAR extragalactic survey, comprising observations of the E-CDFS, EGS and COSMOS fields. The sample includes 182 NuSTAR sources (64 detected at 8-24 keV), wi... Read More about The NuSTAR Extragalactic Survey: Average Broadband X-Ray Spectral Properties of the NuSTAR-detected AGNs.

LLAMA: normal star formation efficiencies of molecular gas in the centres of luminous Seyfert galaxies (2017)
Journal Article
Rosario, D., Burtscher, L., Davies, R., Koss, M., Ricci, C., Lutz, D., …Veilleux, S. (2018). LLAMA: normal star formation efficiencies of molecular gas in the centres of luminous Seyfert galaxies. Monthly Notices of the Royal Astronomical Society, 473(4), 5658-5679. https://doi.org/10.1093/mnras/stx2670

Using new Atacama Pathfinder Experiment and James Clerk Maxwell Telescope spectroscopy of the CO 2→1 line, we undertake a controlled study of cold molecular gas in moderately luminous (Lbol = 1043–44.5 erg s−1) active galactic nuclei (AGN) and inacti... Read More about LLAMA: normal star formation efficiencies of molecular gas in the centres of luminous Seyfert galaxies.

CANDELS: Elevated Black Hole Growth in the Progenitors of Compact Quiescent Galaxies at z ∼ 2 (2017)
Journal Article
Kocevski, D. D., Barro, G., Faber, S., Dekel, A., Somerville, R. S., Young, J. A., Williams, C. C., McIntosh, D. H., Georgakakis, A., Hasinger, G., Nandra, K., Civano, F., Alexander, D. M., Almaini, O., Conselice, C. J., Donley, J. L., Ferguson, H. C., Giavalisco, M., Grogin, N. A., Hathi, N., …Yan, H. (2017). CANDELS: Elevated Black Hole Growth in the Progenitors of Compact Quiescent Galaxies at z ∼ 2. Astrophysical Journal, 846(2), Article 112. https://doi.org/10.3847/1538-4357/aa8566