Results 81 to 90 of about 34,388 (227)

Cosmic axion background propagation in galaxies

Physics Letters B, 2016
Many extensions of the Standard Model include axions or axion-like particles (ALPs). Here we study ALP to photon conversion in the magnetic field of the Milky Way and starburst galaxies. By modelling the effects of the coherent and random magnetic fields,
Francesca V. Day
doaj   +1 more source

GOALS-JWST: Mid-infrared Spectroscopy of the Nucleus of NGC 7469

The Astrophysical Journal Letters, 2023
We present mid-infrared spectroscopic observations of the nucleus of the nearby Seyfert galaxy NGC 7469 taken with the MIRI instrument on the James Webb Space Telescope (JWST) as part of Directors Discretionary Time Early Release Science program 1328 ...
L. Armus, T. Lai, V. U, K. L. Larson, T. Diaz-Santos, A. S. Evans, M. A. Malkan, J. Rich, A. M. Medling, D. R. Law, H. Inami, F. Muller-Sanchez, V. Charmandaris, P. van der Werf, S. Stierwalt, S. Linden, G. C. Privon, L. Barcos-Muñoz, C. Hayward, Y. Song, P. Appleton, S. Aalto, T. Bohn, T. Böker, M. J. I. Brown, L. Finnerty, J. Howell, K. Iwasawa, F. Kemper, J. Marshall, J. M. Mazzarella, J. McKinney, E. J. Murphy, D. Sanders, J. Surace   +34 more
doaj   +1 more source

Pre-starbursts in luminous IR galaxies? [PDF]

AIP Conference Proceedings, 1997
4 pages including one postscript figure. Contribution to the Conference proceedings of the 7th Annual Astrophysics Conference in Maryland, STAR FORMATION, NEAR AND FAR, eds. Stephen S.
Gao, Yu, Gruendl, Robert A., Lo, K. Y., Hwang, C. Y., Veilleux, S.   +4 more
openaire   +2 more sources

The interaction-driven starburst contribution to the cosmic star formation rate density

, 2013
An increasing amount of observational evidence supports the notion that there are two modes of star formation: a quiescent mode in disk-like galaxies, and a starburst mode, which is generally interpreted as driven by merging.
Fiore, Fabrizio, Lamastra, Alessandra, Menci, Nicola, Santini, Paola   +3 more
core   +1 more source

Starburst radio galaxies: general properties, evolutionary histories and triggering [PDF]

Monthly Notices of the Royal Astronomical Society, 2010
In this paper we discuss the results of a programme of spectral synthesis modelling of a sample of starburst radio galaxies in the context of scenarios for the triggering of the activity and the evolution of the host galaxies. New optical spectra are also presented for a subset of the objects discussed.
Tadhunter, C., Holt, J., Delgado, R.G., Zaurin, J.R., Villar-Martin, M., Morganti, R., Emonts, B., Almeida, C.R., Inskip, K.   +8 more
openaire   +5 more sources

First Detection of CO Isotopologues in a High-redshift Main-sequence Galaxy: Evidence of a Top-heavy Stellar Initial Mass Function

The Astrophysical Journal
Recent observations and theories have presented a strong challenge to the universality of the stellar initial mass function (IMF) in extreme environments. A notable example has been found for starburst conditions, where evidence favors a top-heavy IMF, i.
Ziyi Guo, Zhi-Yu Zhang, Zhiqiang Yan, Eda Gjergo, Allison W. S. Man, R. J. Ivison, Xiaoting Fu, Yong Shi   +7 more
doaj   +1 more source

The Earliest Stage of Galactic Star Formation

The Astrophysical Journal Letters, 2023
Using a recently developed technique to estimate gas temperatures ( T _SF ) in star-forming regions from large photometric surveys, we propose a diagram, analogous to the Hertzsprung–Russell diagram for individual stars, to probe the evolution of ...
Charles L. Steinhardt, Vadim Rusakov, Thomas H. Clark, Andrei Diaconu, John Forbes, Conor McPartland, Albert Sneppen, John Weaver   +7 more
doaj   +1 more source

Radio Emission and AGN Feedback in Post-starburst Galaxies [PDF]

, 2010
We investigate radio-mode AGN activity among post-starburst galaxies from the Sloan Digital Sky Survey to determine whether AGN feedback may be responsible for the cessation of star formation.
Adelman-McCarthy, Alexander, Allen, Balogh, Bardelli, Bardelli, Becker, Begelman, Bekki, Bell, Bender, Best, Bildfell, Bird, Blake, Bland-Hawthorn, Blundell, Bower, Brotherton, Brown, Buchanan, Bîrzan, Bîrzan, Canalizo, Cardiel, Chabrier, Charlot, Chi, Cid Fernandes, Ciotti, Ciotti, Ciotti, Condon, Croton, Davies, Dewangan, Dressler, Dressler, Emonts, Evans, Fabian, Falkenberg, Falkenberg, Fanaroff, Farrah, Georgakakis, Godambe, Goto, Goto, Goto, Gunn, Heckman, Helou, Hogg, Hopkins, Ivezić, Juett, Kaiser, Kauffmann, Kauffmann, Khalatyan, Kormendy, Liu, Liu, Lonsdale, Martin, Meier, Michael A. Strauss, Min-Su Shin, Mushotzky, Nesvadba, O'Dea, Oemler, Papadopoulos, Pipino, Poggianti, Quintero, Rafferty, Reviglio, Rita Tojeiro, Rupke, Salpeter, Sanders, Schawinski, Shabala, Shin, Shioya, Shlosman, Sijacki, Smith, Smolčić, Springel, Tadhunter, Tojeiro, Tojeiro, Tongue, Tran, Tremblay, Tremonti, Trichas, Vanden Berk, Veilleux, Vernaleo, Wang, Wills, Wilson, Yagi, Yamauchi, Yan, Yang, York, Yun, Zabludoff   +112 more
core   +4 more sources

SO in starburst galaxies

The Astrophysical Journal, 1992
The use of SO and SO2 as probes of the dense interstellar medium in the nearby starburst galaxies NGC 253 and M82 is described. Emission in the 99.3 GHz 3(2) - 2(1) rotational transition of SO was detected in NGC 253 and possibly in M82, and upper limits are reported for emission in the 219.9 GHz 6(5) - 5(4) transition of SO and two lines of SO2.
S. J. Petuchowski, C. L. Bennett
openaire   +1 more source

Integrated field spectroscopy of E+A (post-starburst) galaxies with the Kyoto3DII [PDF]

, 2008
We have performed a two-dimensional spectroscopy of three nearby E+A (post-starburst) galaxies with the Kyoto3DII integral field spectrograph. In all the cases, Hdelta absorption is stronger at the centre of the galaxies, but significantly extended in a ...
Goto, Tomotsugu, Hattori, Takashi, Kawai, Atsushi, Shimono, Atsushi, Sugai, Hajime, Yagi, Masafumi   +5 more
core   +1 more source