Zobrazeno 1 - 10
of 43
pro vyhledávání: '"Buote, D. A."'
Autor:
Kabasares, K. M., Barth, A. J., Buote, D. A., Boizelle, B. D., Walsh, J. L., Baker, A. J., Darling, J., Ho, L. C., Cohn, J.
We present Atacama Large Millimeter/submillimeter Array (ALMA) Cycle 2 observations of CO(2-1) emission from the circumnuclear disks in two early-type galaxies, NGC 1380 and NGC 6861. The disk in each galaxy is highly inclined ($i\,{\sim}\,75^{\circ}
Externí odkaz:
http://arxiv.org/abs/2206.09043
Autor:
Cova, F., Gastaldello, F., Wik, D. R., Boschin, W., Botteon, A., Brunetti, G., Buote, D. A., De Grandi, S., Eckert, D., Ettori, S., Feretti, L., Gaspari, M., Ghizzardi, S., Giovannini, G., Ghirardi, M., Govoni, F., Molendi, S., Murgia, M., Rossetti, M., Vacca, V.
Publikováno v:
A&A 628, A83 (2019)
We present the results of a joint XMM-Newton and NuSTAR observation (200 ks) of the galaxy cluster Abell 523 at $z=0.104$. The peculiar morphology of the cluster radio halo and its outlier position in the radio power P(1.4 GHz) - X-ray luminosity pla
Externí odkaz:
http://arxiv.org/abs/1906.07730
Autor:
Barth, A. J., Darling, J., Baker, A. J., Boizelle, B. D., Buote, D. A., Ho, L. C., Walsh, J. L.
We present first results from a program of Atacama Large Millimeter/submillimeter Array (ALMA) CO(2-1) observations of circumnuclear gas disks in early-type galaxies. The program was designed with the goal of detecting gas within the gravitational sp
Externí odkaz:
http://arxiv.org/abs/1603.04523
Autor:
Gastaldello, F., Limousin, M., Foëx, G., Muñoz, R. P., Verdugo, T., Motta, V., More, A., Cabanac, R., Buote, D. A., Eckert, D., Ettori, S., Fritz, A., Ghizzardi, S., Humphrey, P. J., Meneghetti, M., Rossetti, M.
Publikováno v:
MNRAS 442:L76-L80, 2014
We report on the X-ray observation of a strong lensing selected group, SL2S J08544-0121, with a total mass of $2.4 \pm 0.6 \times 10^{14}$ $\rm{M_\odot}$ which revealed a separation of $124\pm20$ kpc between the X-ray emitting collisional gas and the
Externí odkaz:
http://arxiv.org/abs/1404.5633
Autor:
Gastaldello, F., Di Gesu, L., Ghizzardi, S., Giacintucci, S., Girardi, M., Roediger, E., Rossetti, M., Brighenti, F., Buote, D. A., Eckert, D., Ettori, S., Humphrey, P. J., Mathews, W. G.
We present a combined X-ray, optical, and radio analysis of the galaxy group IC 1860 using the currently available Chandra and XMM data, literature multi-object spectroscopy data and GMRT data. The Chandra and XMM imaging and spectroscopy reveal two
Externí odkaz:
http://arxiv.org/abs/1304.5478
Autor:
Ettori, S., Gastaldello, F., Leccardi, A., Molendi, S., Rossetti, M., Buote, D., Meneghetti, M.
Publikováno v:
2010, Astronomy and Astrophysics, Volume 524, 68
(Abriged) Assuming that the hydrostatic equilibrium holds between the intracluster medium and the gravitational potential, we constrain the NFW profiles in a sample of 44 X-ray luminous galaxy clusters observed with XMM-Newton in the redshift range 0
Externí odkaz:
http://arxiv.org/abs/1009.3266
Autor:
Gastaldello, F., Ettori, S., Balestra, I., Brighenti, F., Buote, D. A., De Grandi, S., Ghizzardi, S., Gitti, M., Tozzi, P.
Publikováno v:
Astronomy and Astrophysics, Volume 522 (2010), id. A34
Recent work based on a global measurement of the ICM properties find evidence for an increase of the iron abundance in galaxy clusters with temperature around 2-4 keV up to a value about 3 times larger than that typical of very hot clusters. We have
Externí odkaz:
http://arxiv.org/abs/1006.3255
Studying the WHIM Content of the Galaxy Large-Scale Structures along the Line of Sight to H 2356-309
Autor:
Zappacosta, L., Nicastro, F., Maiolino, R., Tagliaferri, G., Buote, D. A., Fang, T., Humphrey, P. J., Gastaldello, F.
We make use of a 500ks Chandra HRC-S/LETG spectrum of the blazar H2356-309, combined with a lower S/N spectrum of the same target, to search for the presence of warm-hot absorbing gas associated with two Large-Scale Structures (LSSs) crossed by this
Externí odkaz:
http://arxiv.org/abs/1004.5359
Autor:
Mathews, W. G., Brighenti, F., Faltenbacher, A., Buote, D. A., Humphrey, P. J., Gastaldello, F., Zappacosta, L.
Publikováno v:
Astrophys.J.652:L17-L20,2006
The enormous range of X-ray luminosities among elliptical galaxies with similar optical luminosities can be attributed to large scatter and systematic variations in the dark halo mass determined from X-ray observations. The mean halo mass decreases s
Externí odkaz:
http://arxiv.org/abs/astro-ph/0610694
Publikováno v:
Astrophys.J.634:L137-L140,2005
Elliptical galaxies and their groups having the largest L_x/L_B lie close to the locus in the L_x,L_B diagram expected for closed systems with baryon fractions equal to the cosmic mean value, f_b = 0.16. The estimated baryon fractions for several of
Externí odkaz:
http://arxiv.org/abs/astro-ph/0511152