Results 11 to 20 of about 3,556 (301)

The large-scale distribution and physical properties of massive star forming regions in the Milky Way [PDF]

Proceedings of the International Astronomical Union, 2007
AbstractWe are conducting a large survey with the Urumqi 25 m radio telescope to study the distribution and physical properties of massive star forming regions in the Milky Way. We will accomplish this by observing the H110α hydrogen recombination line at 4.874 GHz and the H2CO absorption line at 4830 GHz.
Jarken Esimbek, Zhou Jianjun, Zheng Xingwu   +2 more
openaire   +1 more source

On the physical nature of globular cluster candidates in the Milky Way bulge [PDF]

Monthly Notices of the Royal Astronomical Society, 2018
We present results from 2MASS JKs photometry on the physical reality of recently reported globular cluster (GC) candidates in the Milky Way (MW) bulge. We relied our analysis on photometric membership probabilities that allowed us to distinguish real stellar aggregates from the composite field star population.
openaire   +3 more sources

Physical Properties of Molecular Clouds at 2 pc Resolution in the Low-metallicity Dwarf Galaxy NGC 6822 and the Milky Way [PDF]

The Astrophysical Journal, 2017
Abstract We present the Atacama Large Millimeter/submillimeter Array survey of CO(2–1) emission from the 1/5 solar metallicity, Local Group dwarf galaxy NGC 6822. We achieve high ( pc) spatial resolution while covering a large area: four 250 pc × 250 pc regions that ...
Andreas Schruba, Adam K. Leroy, J. M. Diederik Kruijssen, Frank Bigiel, Alberto D. Bolatto, W. J. G. de Blok, Linda Tacconi, Ewine F. van Dishoeck, Fabian Walter   +8 more
openaire   +6 more sources

The discovery of two extremely low luminosity Milky Way globular clusters [PDF]

, 2007
We report the discovery of two extremely low luminosity globular clusters in the Milky Way halo. These objects were detected in the Sloan Digital Sky Survey Data Release 5 and confirmed with deeper imaging at the Calar Alto Observatory.
Jong, J. T. A. de, Belokurov, Vasily, Rix, H. W., de Jong, J. T. A., Irwin, M J, Evans, N Wyn, Irwin, M. J., Koposov, Sergey E, Belokurov, V., De Jong, Jelte T A, Rix, Hans-Walter, Gilmore, Gerry F, Gilmore, G., Evans, N. W., Koposov, S., Zucker, D. B., Bell, E. F., Bell, E F, Rix, H. -W., Zucker, Daniel Benjamin, Koposov, S.; id_orcid   +20 more
core   +1 more source

A Study of the Properties and Dynamics of the Disk of Satellites in a Milky-Way-like Galaxy System

Galaxies, 2023
The dynamics of the satellite systems of Milky-Way-like galaxies offer a useful means by which to study the galaxy formation process in the cosmological context. It has been suggested that the currently observed anisotropic distribution of the satellites
Xinghai Zhao, Grant J. Mathews, Lara Arielle Phillips, Guobao Tang   +3 more
doaj   +1 more source

Giving physical significance to the Hi-GAL data: determining the distance of cold dusty cores in the Milky Way [PDF]

Astronomy & Astrophysics, 2011
Context. Hi-GAL, an open time key-project of the Herschel satellite, was awarded 343 hours observing time to carry out a 5-band photometric imaging survey at 70, 160, 250, 350, and 500 μm of a |b| ≤ 1° wide strip of the Milky Way Galactic plane in the longitude range -70° ≤ l ≤ 70°.
Russeil, D., Pestalozzi, M., Mottram, J. C., Bontemps, Sylvain, Anderson, L. D., Zavagno, Annie, Beltrán, M. T., Bally, J., Brand, J., Brunt, C., Cesaroni, R., Joncas, G., Marshall, D., Martin, P., Massi, F., Molinari, S., Moore, T., Noriega-Crespo, A., Olmi, L., Thompson, M. A., Wienen, M., Wyrowski, F.   +21 more
openaire   +3 more sources

Analysis of the physical nature of 22 New VVV Survey Globular Cluster candidates in the Milky Way bulge [PDF]

Monthly Notices of the Royal Astronomical Society, 2019
In order to characterize 22 new globular cluster (GC) candidates in the Galactic bulge, we present their colour-magnitude diagrams (CMDs) and Ks-band luminosity functions (LFs) using the near-infrared VVV database as well as Gaia-DR2 proper motion dataset.
Palma, Tali, Minniti, Dante, Alonso-García, Javier, Crestani, Juliana, Netzel, Henryka, Clariá, Juan, Saito, Roberto, Dias, Bruno, Fernández-Trincado, José, Kammers, Roberto, Geisler, Douglas, Gómez, Matías, Hempel, Maren, Pullen, Joyce   +13 more
openaire   +5 more sources

Identification of an [α/Fe]—enhanced thick disk component in an edge-on Milky Way analog

, 2022
The Milky Way disk consists of two prominent components—a thick, alpha-rich, low-metallicity component and a thin, metal-rich, low-alpha component.
Hayden, Michael, Gerhard, Ortwin, Sharma, Sanjib, Bland-Hawthorn, Joss, van de Sande, Jesse, Freeman, Kenneth, McDermid, Richard, Scott, Nicholas   +7 more
core   +1 more source

The Next Generation Virgo Cluster Survey (NGVS). XXXV. First Kinematical Clues of Overly Massive Dark Matter Halos in Several Ultradiffuse Galaxies in the Virgo Cluster

The Astrophysical Journal, 2023
We present Keck/DEIMOS spectroscopy of the first complete sample of ultradiffuse galaxies (UDGs) in the Virgo cluster. We select all UDGs in Virgo that contain at least 10 globular cluster (GC) candidates and are more than 2.5 σ outliers in scaling ...
Elisa Toloba, Laura V. Sales, Sungsoon Lim, Eric W. Peng, Puragra Guhathakurta, Joel Roediger, Kaixiang Wang, J. Christopher Mihos, Patrick Côté, Patrick R. Durrell, Laura Ferrarese   +10 more
doaj   +1 more source

The low abundance and insignificance of dark discs in simulated Milky Way galaxies [PDF]

, 2016
We investigate the presence and importance of dark matter discs in a sample of 24 simulated Milky Way galaxies in the APOSTLE project, part of the EAGLE programme of hydrodynamic simulations in Lambda CDM cosmology. It has been suggested that a dark disc
Navarro, Julio F., Frenk, Carlos S., Oman, Kyle A., Fattahi, Azadeh, Sawala, Till, Schaller, Matthieu   +5 more
core   +1 more source