Results 1 to 10 of about 278,885 (252)

Measuring the Central Dark Mass in NGC 4258 with JWST/NIRSpec Stellar Kinematics [PDF]

The Astrophysical Journal
We present a new stellar-dynamical measurement of the supermassive black hole (SMBH) mass in the nearby spiral galaxy NGC 4258 (M106), a critical benchmark for extragalactic mass measurements.
Dieu D. Nguyen, Hai N. Ngo, Michele Cappellari, Tinh Q. T. Le, Tien H. T. Ho, Tuan N. Le, Elena Gallo, Niranjan Thatte, Fan Zou, Michele Perna, Miguel Pereira-Santaella   +10 more
doaj   +2 more sources

The Origin of the Nuclear Star-forming Ring in NGC 3182

The Astronomical Journal, 2023
We investigate the stellar and ionized gas kinematics, and stellar populations of NGC 3182 galaxy using integral field spectrograph data from the Calar Alto Legacy Integral Field Area survey. We try to clarify the nature of the ring structure in NGC 3182.
Mina Pak, Joon Hyeop Lee, Hyunjin Jeong, Woong-Seob Jeong   +3 more
doaj   +1 more source

The Metal-weak Milky Way Stellar Disk Hidden in the Gaia–Sausage–Enceladus Debris: The APOGEE DR17 View

The Astrophysical Journal, 2023
We have for the first time identified the early stellar disk in the Milky Way by using a combination of elemental abundances and kinematics. Using data from APOGEE DR17 and Gaia we select stars in the Mg–Mn–Al–Fe plane with elemental abundances ...
Sofia Feltzing, Diane Feuillet
doaj   +1 more source

TDCOSMO

Astronomy & Astrophysics
Spatially resolved stellar kinematics has become a key ingredient in time-delay cosmography to break the mass-sheet degeneracy in the mass profile and in turn provide a precise constraint on the Hubble constant and other cosmological parameters.
Shajib Anowar J., Treu Tommaso, Suyu Sherry H., Law David, Yıldırım Akın, Cappellari Michele, Galan Aymeric, Knabel Shawn, Wang Han, Birrer Simon, Courbin Frédéric, Fassnacht Christopher D., Frieman Joshua A., Melo Alejandra, Morishita Takahiro, Mozumdar Pritom, Sluse Dominique, Stiavelli Massimo   +17 more
doaj   +3 more sources

Investigation of the Stellar Population of Several Polar Ring Galaxies

Galaxies, 2016
We present results of our investigation of two multi-spin galaxies which were taken from the catalog of polar ring galaxies. All of them possess nucleus-like knots.
Liliya Shalyapina, Gulnara Karataeva, Olga Merkulova, Valeriya Yakovleva, Nina Yablokova   +4 more
doaj   +1 more source

Oort Constants and Local Stellar Kinematics from GCNS

Universe, 2023
Oort constants and local kinematics are vital parameters with which to study the structure and dynamics of the Milky Way. When GCNS was published, it provided a clean sample of stars in the solar vicinity, which gives us an ideal tool with which to ...
Sufen Guo, Zhaoxiang Qi
doaj   +1 more source

Mapping the Stellar Kinematics in the Central 240 pc of M87 with the James Webb Space Telescope

The Astrophysical Journal
The supermassive black hole (SMBH) in the giant elliptical galaxy M87 is one of the most well studied in the local Universe, but the stellar- and gas-dynamical SMBH mass measurements disagree.
Refa M. Al-Amri, Jonelle L. Walsh, Emily R. Liepold, Chung-Pei Ma, Jenny E. Greene   +4 more
doaj   +1 more source

A Complex Stellar Line-of-Sight Velocity Distribution in the Lenticular Galaxy NGC 524

Open Astronomy, 2011
We present a detailed study of the stellar and gaseous kinematics in the luminous early-type galaxy NGC 524, derived from the long-slit spectroscopic observations obtained with the Russian 6 m telescope and the IFU data from the SAURON survey.
Katkov I., Chilingarian I., Sil’chenko O., Zasov A., Afanasiev V.   +4 more
doaj   +1 more source

With arms wide open: A VLT/MUSE view of the mechanisms driving unwinding spiral arms in cluster galaxies

Astronomy & Astrophysics
Context. The environmental mechanisms driving unwinding spiral arms in cluster galaxies remain debated. While earlier studies attributed this phenomenon primarily to gravitational interactions, more recent works suggest that ram-pressure stripping (RPS ...
Lassen Augusto E., Vulcani Benedetta, Fritz Jacopo, Poggianti Bianca M., Marasco Antonino, Jaffé Yara, Gullieuszik Marco, Moretti Alessia, Radovich Mario, Smith Rory, Tonnesen Stephanie, Tomičić Neven, George Koshy, Ignesti Alessandro, Matijević Luka, Giunchi Eric   +15 more
doaj   +1 more source

Resolved SPLASH Chemodynamics in Andromeda’s PHAT Stellar Halo and Disk: On the Nature of the Inner Halo along the Major Axis

The Astronomical Journal, 2023
Stellar kinematics and metallicity are key to exploring formation scenarios for galactic disks and halos. In this work, we characterized the relationship between kinematics and photometric metallicity along the line of sight to M31's disk.
Ivanna Escala, Amanda C. N. Quirk, Puragra Guhathakurta, Karoline M. Gilbert, J. Leigh Wojno, Lara Cullinane, Benjamin F. Williams, Julianne Dalcanton   +7 more
doaj   +1 more source