Zobrazeno 1 - 10
of 322
pro vyhledávání: '"Leech, K."'
We introduce two simple online activities to explore the physics of neutron stars. These provide an introduction to the basic properties of compact objects, like their masses and radii, for secondary school students. The first activity explores the i
Externí odkaz:
http://arxiv.org/abs/2104.12449
We present a simple activity based on the liquid-drop model which allows secondary school students to explore the uses of mathematical models and gain an intuitive understanding of the concept of binding energy, and in particular the significance of
Externí odkaz:
http://arxiv.org/abs/2007.06872
Autor:
Diget, C. Aa., Pastore, A., Leech, K., Haylett, T., Lock, S., Sanders, T., Shelley, M., Willett, H. V., Keegans, J., Sinclair, L., Simpson, E. C.
We present a new teaching and outreach activity based around the construction of a three-dimensional chart of isotopes using LEGO$^{\circledR}$ bricks. The activity, \emph{Binding Blocks}, demonstrates nuclear and astrophysical processes through a se
Externí odkaz:
http://arxiv.org/abs/1610.02296
ISO observations of the interacting galaxy Markarian 297: with the powerful supernova remnant 1982aa
Autor:
Metcalfe, L., O'Halloran, B., McBreen, B., Delaney, M., Burgdorf, M., Leech, K., Barr, P., Clavel, J., Coia, D., Hanlon, L., Gallais, P., Laureijs, R., Smith, N.
Markarian (Mkn) 297 is a complex system with two interacting galaxies. Observations were made with ISO using ISOCAM, ISOPHOT and LWS. We present ISOCAM maps at 6.7, 7.7, 12 and 14.3 microns which, with PHT-S spectrometry of the central interacting re
Externí odkaz:
http://arxiv.org/abs/astro-ph/0508469
Autor:
Biviano, A., Metcalfe, L., McBreen, B., Altieri, B., Coia, D., Kessler, M. F., Kneib, J-P., Leech, K., Okumura, K., Ott, S., Perez-Martinez, R., Sanchez-Fernandez, C., Schulz, B.
Publikováno v:
Astron.Astrophys. 425 (2004) 33
We observed the cluster Abell 2218 (z=0.175), with ISOCAM on board the Infrared Space Observatory, using two filters with reference wavelengths of 6.7 and 14.3 microns. We detected 67 extragalactic mid-infrared sources. Using the ``GRASIL'' models of
Externí odkaz:
http://arxiv.org/abs/astro-ph/0406391
Autor:
Metcalfe, L., Kneib, J. -P., McBreen, B., Altieri, B., Biviano, A., Delaney, M., Elbaz, D., Kessler, M. F., Leech, K., Okumura, K., Ott, S., Perez-Martinez, R., Sanchez-Fernandez, C., Schulz, B.
Publikováno v:
Astron.Astrophys. 407 (2003) 791-822
ISOCAM was used to perform a deep survey through three gravitationally lensing clusters of galaxies. Nearly seventy sq. arcmin were covered over the clusters A370, A2218 and A2390. We present maps and photometry at 6.7 & 14.3 microns, showing a total
Externí odkaz:
http://arxiv.org/abs/astro-ph/0305400
Publikováno v:
Astron.Astrophys. 397 (2003) 871-882
We study the relationship between gas cooling via the [C II] (158 micron) line emission and dust cooling via the far-IR continuum emission on the global scale of a galaxy in normal (i.e. non-AGN dominated and non-starburst) late-type systems. It is k
Externí odkaz:
http://arxiv.org/abs/astro-ph/0210657
Autor:
O'Halloran, B., Metcalfe, L., McBreen, B., Laureijs, R., Leech, K., Delaney, M., Watson, D., Hanlon, L.
Hickson Compact Group (HCG) 31, consisting of the Wolf-Rayet galaxy NGC 1741 and its irregular dwarf companions, was observed using the Infrared Space Observatory. The deconvolved ISOCAM maps of the galaxies using the 7.7 micron and 14.3 micron (LW6
Externí odkaz:
http://arxiv.org/abs/astro-ph/0204286
Publikováno v:
Mon.Not.Roy.Astron.Soc. 328 (2001) 1125
We present mid- and far-IR photometry of the high-redshift (z=4.69) dusty quasar BR1202-0725. The quasar was detected in the near-IR, at a flux level (0.7+/-0.2 mJy) consistent with an average Radio-Quiet Quasar at it's redshift. Only upper limits fo
Externí odkaz:
http://arxiv.org/abs/astro-ph/0109033
We combine observations of spiral galaxies in the [CII] line at 158 micron, made with the Long Wavelength Spectrometer aboard ISO, with previous data from the Kuiper Airborne Observatory to study the origin of this line, which is the main coolant of
Externí odkaz:
http://arxiv.org/abs/astro-ph/0105147