Zobrazeno 1 - 10
of 2 805
pro vyhledávání: '"Smith, D J"'
Autor:
Bichang'a, B., Kaviraj, S., Lazar, I., Jackson, R. A., Das, S., Smith, D. J. B., Watkins, A. E., Martin, G.
Given their dominance of the galaxy number density, dwarf galaxies are central to our understanding of galaxy formation. While the incidence of AGN and their impact on galaxy evolution has been extensively studied in massive galaxies, much less is kn
Externí odkaz:
http://arxiv.org/abs/2406.11962
Autor:
Yue, B. -H., Best, P. N., Duncan, K. J., Calistro-Rivera, G., Morabito, L. K., Petley, J. W., Prandoni, I., Röttgering, H. J. A., Smith, D. J. B.
Studies show that both radio jets from the active galactic nuclei (AGN) and the star formation (SF) activity in quasar host galaxies contribute to the quasar radio emission; yet their relative contributions across the population remain unclear. Here,
Externí odkaz:
http://arxiv.org/abs/2403.07074
Autor:
Rivera, G. Calistro, Alexander, D. M., Harrison, C. M., Fawcett, V. A., Best, P. N., Williams, W. L., Hardcastle, M. J., Rosario, D. J., Smith, D. J. B., Arnaudova, M. I., Escott, E., Gürkan, G., Kondapally, R., Miley, G., Morabito, L. K., Petley, J., Prandoni, I., Röttgering, H. J. A., Yue, B. -H.
We present a comprehensive study of the physical origin of radio emission in optical quasars at redshifts z < 2.5. We focus particularly on the associations between compact radio emission, dust reddening, and outflows identified in our earlier work.
Externí odkaz:
http://arxiv.org/abs/2312.10177
Autor:
Whittam, I. H., Prescott, M., Hale, C. L., Jarvis, M . J., Heywood, I., An, Fangxia, Glowacki, M., Maddox, N., Marchetti, L., Morabito, L. K., Adams, N. J., Bowler, R. A. A., Hatfield, P. W., Varadaraj, R. G., Collier, J., Frank, B., Taylor, A. R., Santos, M. G., Vaccari, M., Afonso, J., Ao, Y., Delhaize, J., Knowles, K., Kolwa, S., Randriamampandry, S. M., Randriamanakoto, Z., Smirnov, O., Smith, D. J. B., White, S. V.
In this paper we combine the Early Science radio continuum data from the MeerKAT International GHz Tiered Extragalactic Exploration (MIGHTEE) Survey, with optical and near-infrared data and release the cross-matched catalogues. The radio data used in
Externí odkaz:
http://arxiv.org/abs/2310.17409
We investigate how the recovery of galaxy star formation rates (SFRs) using energy-balance spectral energy distribution (SED) fitting codes depends on their recent star formation histories (SFHs). We use the Magphys and Prospector codes to fit 6,706
Externí odkaz:
http://arxiv.org/abs/2310.16097
Publikováno v:
MNRAS, vol 525, p 1535 (2023)
Recent works have suggested that energy balance spectral energy distribution (SED) fitting codes may be of limited use for studying high-redshift galaxies for which the observed ultraviolet and far-infrared emission are offset (spatially `decoupled')
Externí odkaz:
http://arxiv.org/abs/2309.07960
Autor:
Gloudemans, A. J., Callingham, J. R., Duncan, K. J., Saxena, A., Harikane, Y., Hill, G. J., Zeimann, G. R., Rottgering, H. J. A., Hardcastle, M. J., Pineda, J. S., Shimwell, T. W., Smith, D. J. B., Wagenveld, J. D.
Publikováno v:
A&A 678, A161 (2023)
We present the serendipitous discovery of 8 distant ($>$ 50 pc) late M dwarfs with plausible associated radio emission at 144 MHz. The M dwarf nature of our sources has been confirmed with optical spectroscopy performed using HET/LRS2 and Subaru/FOCA
Externí odkaz:
http://arxiv.org/abs/2309.01741
Autor:
Hardcastle, M. J., Horton, M. A., Williams, W. L., Duncan, K. J., Alegre, L., Barkus, B., Croston, J. H., Dickinson, H., Osinga, E., Röttgering, H. J. A., Sabater, J., Shimwell, T. W., Smith, D. J. B., Best, P. N., Botteon, A., Brüggen, M., Drabent, A., de Gasperin, F., Gürkan, G., Hajduk, M., Hale, C. L., Hoeft, M., Jamrozy, M., Kunert-Bajraszewska, M., Kondapally, R., Magliocchetti, M., Mahatma, V. H., Mostert, R. I. J., O'Sullivan, S. P., Pajdosz-Śmierciak, U., Petley, J., Pierce, J. C. S., Prandoni, I., Schwarz, D. J., Shulewski, A., Siewert, T. M., Stott, J. P., Tang, H., Vaccari, M., Zheng, X., Bailey, T., Desbled, S., Goyal, A., Gonano, V., Hanset, M., Kurtz, W., Lim, S. M., Mielle, L., Molloy, C. S., Roth, R., Terentev, I. A., Torres, M.
Publikováno v:
A&A 678, A151 (2023)
The second data release of the LOFAR Two-Metre Sky Survey (LoTSS) covers 27% of the northern sky, with a total area of $\sim 5,700$ deg$^2$. The high angular resolution of LOFAR with Dutch baselines (6 arcsec) allows us to carry out optical identific
Externí odkaz:
http://arxiv.org/abs/2309.00102
Autor:
Seikh, M. F. H, Besson, D. Z., Ali, S., Allison, P., Archambault, S., Beatty, J. J., Bishop, A., Chen, P., Chen, Y. C., Clark, B. A., Clay, W., Connolly, A., Couberly, K., Cremonesi, L., Cummings, A., Dasgupta, P., Debolt, R., De Kockere, S., de Vries, K. D., Deaconu, C., DuVernois, M. A., Flaherty, J., Friedman, E., Gaior, R., Giri, P., Hanson, J., Harty, N., Hendricks, B., Hoffman, K. D., Huang, J. J., Huang, M. H. A., Hughes, K., Ishihara, A., Karle, A., Kelley, J. L., Kim, K. C., Kim, M. C., Kravchenko, I., Krebs, R., Kuo, C. Y., Kurusu, K., Latif, U. A., Liu, C. H., Liu, T. C., Luszczak, W., Mase, K., Muzio, M. S., Nam, J., Nichol, R. J., Novikov, A., Nozdrina, A., Oberla, E., Pan, Y., Pfendner, C., Punsuebsay, N., Roth, J., Salcedo-Gomez, A., Seckel, D., Seikh, M. F. H., Shiao, Y. S., Smith, D. J. B., Toscano, S., Torres, J., Touart, J., van Eijndhoven, N., Varner, G. S., Vieregg, A., Wang, M. Z., Wang, S. H., Wissel, S. A., Xie, C., Yoshida, S., Young, R.
Publikováno v:
PoS ICRC2023 (2023) 1163
The Askaryan Radio Array Station 1 (A1), the first among five autonomous stations deployed for the ARA experiment at the South Pole, is a unique ultra-high energy neutrino (UHEN) detector based on the Askaryan effect that uses Antarctic ice as the de
Externí odkaz:
http://arxiv.org/abs/2308.07292
Autor:
Kondapally, R., Best, P. N., Raouf, M., Thomas, N. L., Davé, R., Shabala, S. S., Röttgering, H. J. A., Hardcastle, M. J., Bonato, M., Cochrane, R. K., Małek, K., Morabito, L. K., Prandoni, I., Smith, D. J. B.
Radio-mode feedback is a key ingredient in galaxy formation and evolution models, required to reproduce the observed properties of massive galaxies in the local Universe. We study the cosmic evolution of radio-AGN feedback out to $z\sim2.5$ using a s
Externí odkaz:
http://arxiv.org/abs/2306.11795