Results 51 to 60 of about 10,967 (146)

The HI content of the recently discovered field dwarf galaxy APPLES1

, 2005
We present observations in a search for neutral hydrogen associated with the recently detected field dwarf galaxy APPLES1, performed with the Parkes radiotelescope.
A. Pasquali, A. Tarchi, Buyle, Carignan, Gallagher, Harris, I. Ferreras, J. Ott, Karachentsev, Karachentsev, Karachentsev, Kennicutt, Klypin, Lo, Mateo, Oosterloo, P. Castangia, Pagel, Pasquali, Paturel, Roberts, S. S. Larsen, Sandage, Stil, van den Bergh, van Zee   +25 more
core   +1 more source

Advancing rare cancer research by MALDI mass spectrometry imaging: Applications, challenges, and future perspectives in sarcoma

PROTEOMICS, Volume 24, Issue 12-13, June 2024.
Abstract MALDI mass spectrometry imaging (MALDI imaging) uniquely advances cancer research, by measuring spatial distribution of endogenous and exogenous molecules directly from tissue sections. These molecular maps provide valuable insights into basic and translational cancer research, including tumor biology, tumor microenvironment, biomarker ...
Maren Nicole Stillger, Mujia Jenny Li, Pia Hönscheid, Cläre von Neubeck, Melanie Christine Föll   +4 more
wiley   +1 more source

Are Nuclear Star Clusters the Precursors of Massive Black Holes?

Advances in Astronomy, Volume 2012, Issue 1, 2012., 2012
We present new upper limits for black hole masses in extremely late type spiral galaxies. We confirm that this class of galaxies has black holes with masses less than 106M⊙, if any. We also derive new upper limits for nuclear star cluster masses in massive galaxies with previously determined black hole masses.
Nadine Neumayer, C. Jakob Walcher, Francesca Civano   +2 more
wiley   +1 more source

On the Stellar Content of the Carina Dwarf Spheroidal Galaxy1 [PDF]

Publications of the Astronomical Society of the Pacific, 2010
Accepted on PASP, 12 pages, 6 ...
Giuseppe Bono, Giuseppe Bono, L. Pulone, Peter B. Stetson, Scilla Degl'Innocenti, P. G. Prada Moroni, M. Fabrizio, I. Ferraro, P. François, Horace A. Smith, Santi Cassisi, Matteo Monelli, C. E. Corsi, R. Buonanno, Alistair R. Walker, Adriano Pietrinferni, E. Brocato, G. Iannicola, Frédéric Thévenin, Mario Nonino, Michele Cignoni, Michele Cignoni, Filippina Caputo, Marco Castellani, Massimo Dall'Ora   +24 more
openaire   +9 more sources

Dwarf Spheroidal Satellite Formation in a Reionized Local Group [PDF]

, 2014
Dwarf spheroidal satellite galaxies have emerged a powerful probe of small-scale dark matter clustering and of cosmic reionization. They exhibit structural and chemical continuity with dwarf irregular galaxies in the field and with spheroidal galaxies in
Bromm, Volker, Milosavljevic, Milos
core   +1 more source

Updated Bounds on Axion‐Like Particle Dark Matter with the Optical MUSE‐Faint Survey

Annalen der Physik, Volume 536, Issue 1, January 2024.
This study presents bounds on the axion‐like particle (ALP) to two‐photon coupling in the mass range $2.65‐5.27$ eV. The signal from ALP decay are sought in the Multi Unit Spectroscopic Explorer (MUSE) observations of five dwarf spheroidal galaxies, under the assumption that ALPs make up the whole dark matter.
Elisa Todarello
wiley   +1 more source

Pulsar‐Driven Jets in Supernovae, Gamma‐Ray Bursts, and the Universe

Advances in Astronomy, Volume 2012, Issue 1, 2012., 2012
The bipolarity of Supernova 1987A can be understood through its very early light curve from the CTIO 0.4 m telescope and IUE FES and following speckle observations of the “Mystery Spot”. These indicate a beam/jet of light/particles, with initial collimation factors >104 and velocities >0.95 c, involving up to 10−5 M⊙ interacting with circumstellar ...
John Middleditch, Alberto J. Castro-Tirado   +1 more
wiley   +1 more source

A MegaCam Survey of Outer Halo Satellites. VII. A Single S\'ersic Index v/s Effective Radius Relation for Milky Way Outer Halo Satellites

, 2019
In this work we use structural properties of Milky Way's outer halo ($R_G > 25\,\mathrm{kpc}$) satellites (dwarf spheroidal galaxies, ultra-faint dwarf galaxies and globular clusters) derived from deep, wide-field and homogeneous data, to present ...
Carballo-Bello, Julio A., Chanamé, Julio, Djorgovski, S. G., Geha, Marla, Marchi-Lasch, Sebastián, Muñoz, Ricardo R., Santana, Felipe A., Simon, Joshua D., Stetson, Peter B.   +8 more
core   +1 more source

Implications and Applications of Kinematic Galaxy Scaling Relations

International Scholarly Research Notices, Volume 2012, Issue 1, 2012., 2012
Galaxy scaling relations, which describe a connection between ostensibly unrelated physical characteristics, testify to an underlying order in galaxy formation that requires understanding. I review the development of a scaling relation that (1) unites the well‐known fundamental plane (FP) relation of giant elliptical galaxies and Tully‐Fisher (TF ...
Dennis Zaritsky, J. A. L. Aguerri, P. Salucci   +2 more
wiley   +1 more source

THE CHEMICAL EVOLUTION OF THE DRACO DWARF SPHEROIDAL GALAXY [PDF]

The Astrophysical Journal, 2009
We present an abundance analysis based on high resolution spectra of 8 stars selected to span the full range in metallicity in the Draco dwarf spheroidal galaxy. We find [Fe/H] for the sample stars ranges from -1.5 to -3.0 dex. Combining our sample with previously published work for a total of 14 luminous Draco giants, we show that the abundance ratios
Cohen, Judith G., Huang, Wenjin
openaire   +5 more sources