Zobrazeno 1 - 10
of 563
pro vyhledávání: '"Gallagher, J S"'
Autor:
Dullo, B. T., Knapen, J. H., Baldi, R. D., Williams, D. R. A., Beswick, R. J., McHardy, I. M., Green, D. A., de Paz, A. Gil, Aalto, S., Alberdi, A., Argo, M. K., Gallagher, J. S., Klöckner, H. -R., Marcaide, J. M., Mutie, I. M., Saikia, D. J., Saikia, P., Stevens, I. R., Torrejón, S.
[Abridged] The relation between nuclear star clusters (NSCs) and the growth of the central SMBHs, as well as their connection to the properties of the host galaxies, is crucial for understanding the evolution of galaxies. Recent observations have rev
Externí odkaz:
http://arxiv.org/abs/2407.10850
Autor:
Gallagher, J. S., Kotulla, R., Laufman, L., Geist, E., Aalto, S., Falstad, N., König, S., Krause, J., Privon, G., Wethers, C., Evans, A. S., Gorski, M.
Zw~049.057 is a moderate mass, dusty, early-type galaxy that hosts a powerful compact obscured nucleus (CON, L$_{FIR,CON} \geq$10$^{11}$~L$_{\odot}$). The resolution of HST enabled measurements of the stellar light distribution and characterization o
Externí odkaz:
http://arxiv.org/abs/2406.12126
Autor:
Gorski, M. D., Aalto, S., König, S., Wethers, C. F., Yang, C., Muller, S., Onishi, K., Sato, M., Falstad, N., Mangum, Jeffrey G., Linden, S. T., Combes, F., Martín, S., Imanishi, M., Wada, Keiichi, Barcos-Muñoz, L., Stanley, F., García-Burillo, S., van der Werf, P. P., Evans, A. S., Henkel, C., Viti, S., Harada, N., Díaz-Santos, T., Gallagher, J. S., González-Alfonso, E.
Publikováno v:
A&A 684, L11 (2024)
How galaxies regulate nuclear growth through gas accretion by supermassive black holes (SMBHs) is one of the most fundamental questions in galaxy evolution. One potential way to regulate nuclear growth is through a galactic wind that removes gas from
Externí odkaz:
http://arxiv.org/abs/2403.16759
Autor:
Nishimura, Y., Aalto, S., Gorski, M. D., König, S., Onishi, K., Wethers, C., Yang, C., Barcos-Muñoz, L., Combes, F., Díaz-Santos, T., Gallagher, J. S., García-Burillo, S., González-Alfonso, E., Greve, T. R., Harada, N., Henkel, C., Imanishi, M., Kohno, K., Linden, S. T., Mangum, J. G., Martín, S., Muller, S., Privon, G. C., Ricci, C., Stanley, F., van der Werf, P. P., Viti, S.
Publikováno v:
A&A 686, A48 (2024)
Nuclear regions of ultraluminous and luminous infrared galaxies (U/LIRGs) are powered by starbursts and/or active galactic nuclei (AGNs). These regions are often obscured by extremely high columns of gas and dust. Molecular lines in the submillimeter
Externí odkaz:
http://arxiv.org/abs/2402.15436
Autor:
Finn, Molly K., Johnson, Kelsey E., Indebetouw, Remy, Costa, Allison H., Adamo, Angela, Aloisi, Alessandra, Bittle, Lauren, Calzetti, Daniela, Dale, Daniel A., Dobbs, Clare L., Meyer, Jennifer Donovan, Elmegreen, Bruce G., Elmegreen, Debra M., Fumagalli, Michele, Gallagher, J. S., Grasha, Kathryn, Grebel, Eva K., Kennicutt, Robert C., Krumholz, Mark R., Lee, Janice C., Messa, Matteo, Nair, Preethi, Sabbi, Elena, Smith, Linda J., Thilker, David A., Whitmore, Bradley C., Wofford, Aida
We compare the molecular cloud properties in sub-galactic regions of two galaxies, barred spiral NGC 1313, which is forming many massive clusters, and flocculent spiral NGC 7793, which is forming significantly fewer massive clusters despite having a
Externí odkaz:
http://arxiv.org/abs/2401.01451
Autor:
Finn, Molly K., Johnson, Kelsey E., Indebetouw, Remy, Costa, Allison H., Adamo, Angela, Aloisi, Alessandra, Bittle, Lauren, Calzetti, Daniela, Dale, Daniel A., Dobbs, Clare L., Meyer, Jennifer Donovan, Elmegreen, Bruce G., Elmegreen, Debra M., Fumagalli, Michele, Gallagher, J. S., Grasha, Kathryn, Grebel, Eva K., Kennicutt, Robert C., Krumholz, Mark R., Lee, Janice C., Messa, Matteo, Nair, Preethi, Sabbi, Elena, Smith, Linda J., Thilker, David A., Whitmore, Bradley C., Wofford, Aida
We present a comparative study of the molecular gas in two galaxies from the LEGUS sample: barred spiral NGC 1313 and flocculent spiral NGC 7793. These two galaxies have similar masses, metallicities, and star formation rates, but NGC 1313 is forming
Externí odkaz:
http://arxiv.org/abs/2401.01450
Autor:
Dullo, B. T., Knapen, J. H., Beswick, R. J., Baldi, R. D., Williams, D. R. A., McHardy, I. M., Gallagher, J. S., Aalto, S., Argo, M. K., de Paz, A. Gil, Klöckner, H. -R., Marcaide, J. M., Mundell, C. G., Mutie, I. M., Saikia, P.
Publikováno v:
A&A 675, A105 (2023)
[Abridged] We use high-resolution $HST$ imaging and $e$-MERLIN 1.5-GHz observations of galaxy cores from the LeMMINGs survey to investigate the relation between optical structural properties and nuclear radio emission for a large sample of galaxies.
Externí odkaz:
http://arxiv.org/abs/2303.11154
Autor:
Sabbi, E., Zeidler, P., van der Marel, R. P., Nota, A., Anderson, J., Gallagher, J. S., Lennon, D. J., Smith, L. J., Gennaro, M.
We investigate the internal kinematics of the young star-forming region NGC 346 in the Small Magellanic Cloud. We used two epochs of deep F555W and F814W Hubble Space Telescope ACS observations with an 11-year baseline to determine proper motions, an
Externí odkaz:
http://arxiv.org/abs/2209.03215
Autor:
Geist, E., Gallagher, J. S., Kotulla, R., Oskinova, L., Hamann, W. -R., Ramachandran, V., Sabbi, E., Smith, L., Kniazev, A., Nota, A., Rickard, M. J.
The NGC 346 young stellar system and associated N66 giant HII region in the Small Magellanic Cloud are the nearest example of a massive star forming event in a low metallicity ($Z\approx0.2Z_{\odot}$) galaxy. With an age of $\lesssim$3Myr this system
Externí odkaz:
http://arxiv.org/abs/2205.05147
Autor:
Gvaramadze, V. V., Kniazev, A. Y., Gallagher, J. S., Oskinova, L. M., Chu, Y. -H., Gruendl, R. A., Katkov, I. Y.
We report the results of optical spectroscopy of the Small Magellanic Cloud supernova remnant (SNR) MCSNR J0127-7332 and the mass donor Be star, 2dFS 3831, in its associated high-mass X-ray binary SXP 1062 carried out with the Southern African Large
Externí odkaz:
http://arxiv.org/abs/2103.03707