Results 121 to 130 of about 402,386 (219)

What Does the LMC Look Like? It Depends on [M/H] and Age

The Astrophysical Journal
We offer a new way to look at the LMC through stellar mono-abundance and mono-age mono-abundance maps. These maps are based on ≳500,000 member stars with estimates of [M/H] ( σ _[M/H]  ~ 0.17) and age $({\sigma }_{{\rm{log}}\tau }\unicode{x0007E}0.15$ ),
Neige Frankel, Rene Andrae, Hans-Walter Rix, Joshua Povick, Vedant Chandra   +4 more
doaj   +1 more source

Discussion on Irregular Galaxies [PDF]

Symposium - International Astronomical Union, 1978
openaire   +1 more source

The inclination of the dwarf irregular galaxy Holmberg II

, 2014
We provide constraints on the inclination angle of the H\,{\sc i} disk of the dwarf irregular galaxy Holmberg II (Ho II) from stability analysis of the outer gaseous disk. We point out that a mean inclination angle of 27 degrees and thus a flat circular velocity of ~60 km/s, is required to have a level of gravitational stability similar to that found ...
F. J. Sánchez-Salcedo, A. M. Hidalgo-Gámez, Eric E. Martínez-García   +2 more
openaire   +3 more sources

Discovery of Metal-poor and Distant Pre–Main Sequence Candidates in WLM with JWST

The Astrophysical Journal Letters
We present the discovery of 12 metal-poor and ​​​distant pre–main sequence (PMS) candidates in the dwarf irregular galaxy Wolf–Lundmark–Melotte ∼968 kpc away, at a present-day metallicity of [Fe/H] ∼ –0.9.
Venu M. Kalari, Ricardo Salinas, Morten Andersen, Guido De Marchi, Monica Rubio, Jorick S. Vink, Hans Zinnecker   +6 more
doaj   +1 more source

HegemanLab/galaxy-tardis: First release of Galaxy TARDIS with DEMO

, 2019
First release of Galaxy TARDIS with DEMO <p>The DEMO script is not yet self-contained because it requires an external S3 server to demonstrate the backup and restore functionality - I am deferring this to the next release.</p> <p>Please
Arthur Eschenlauer
core   +1 more source

The JWST Resolved Stellar Populations Early Release Science Program. VIII. The Spatially Resolved Star Formation History of WLM

The Astrophysical Journal
Radial stellar population gradients within dwarf galaxies provide a promising avenue for disentangling the drivers of galaxy evolution, including environment. Within the Local Volume, radial stellar age gradient slopes correlate with interaction history,
Roger E. Cohen, Kristen B. W. McQuinn, Alessandro Savino, Max J. B. Newman, Daniel R. Weisz, Andrew E. Dolphin, Martha L. Boyer, Matteo Correnti, Marla C. Geha, Mario Gennaro, Karoline M. Gilbert, Nitya Kallivayalil, Jack T. Warfield, Benjamin F. Williams, Alyson M. Brooks, Andrew A. Cole, Evan D. Skillman, Christopher T. Garling, Jason S. Kalirai, Jay Anderson   +19 more
doaj   +1 more source

Emission Line Velocity Field Of The Magellanic Irregular Galaxy Ngc 4449

, 2007
The imaging spectroscopic observations of the Magellanic irregular galaxy NGC 4449 were made to show the detailed kinematic structure of the galaxy. Many filamentary structures and Several bubble-like structures are recognized in a 3D data cube of Hff ...
Minoru Sasaki, Tasuhiro Shimizu, Kouji Ohta, Michitoshi Yoshida, Hisashi Koyano, Mamoru Saito   +5 more
core  

Measuring Resolved Star Formation Histories from High-precision Color–Magnitude Diagrams with StarFormationHistories.jl

The Astrophysical Journal Supplement Series
Understanding how and when galaxies formed stars over the history of the Universe is fundamental to the study of galaxy evolution. The star formation histories (SFHs) of galaxies in the local Universe can be measured with high precision using deep ...
Christopher T. Garling, Nitya Kallivayalil, Kristen B. W. McQuinn, Jack T. Warfield, Mario Gennaro, Roger E. Cohen   +5 more
doaj   +1 more source

Galaxy Ultraviolet Legacy Project: Survey Description and First Insights into NGC 4449 Recent History of Star Formation

The Astrophysical Journal
The Galaxy UV Legacy Project (GULP) is a Cycle 28 Treasury program with the Hubble Space Telescope designed to characterize resolved massive stars, OB associations, and young star clusters in 26 nearby star-forming galaxies. Utilizing the Advanced Camera
E. Sabbi, B. Meena, P. Zeidler, V. Bajaj, D. Calzetti, J. J. Eldridge, P. Facchini, S. Linden, P. A. Crowther, A. Adamo, L. Bianchi, M. Cignoni, B. G. Elmegreen, D. M. Elmegreen, J. S. Gallagher III, M. Gennaro, E. K. Grebel, R. S. Klessen, A. Pasquali, L. J. Smith, A. Wofford   +20 more
doaj   +1 more source

Ram-pressure signatures in the dwarf irregular galaxy Sextans B revealed by deep MeerKAT H I observations

Astronomy & Astrophysics
Context. The impact of extremely low-density environments such as the diffuse intergalactic medium (IGM) on the neutral gas distribution of dwarf galaxies remains poorly explored observationally. Aims.
Namumba Brenda, Kolhe Neel, Hammer Francois, Yang Yanbin, Carignan Claude, Ianjamasimanana Roger, Józsa Gyula I. G., Montenegro Lourdes Verdes, Wang Haifeng, Chen Hao, Huang Xin, Ndalama Fortune, Sorgho Amidou, Korsaga Marie, Phiri Saul P.   +14 more
doaj   +1 more source