Results 101 to 110 of about 1,118 (188)

High-resolution Optical IFU Spectroscopy of the Complex Galaxy Merger II Zw 096

The Astrophysical Journal
Luminous and ultraluminous IR galaxies are critical for investigating feedback mechanisms due to a combination of intense star formation episodes and active galactic nuclei (AGN), particularly in the context of complex galaxy interactions.
Clemente Riesco, Ezequiel Treister, Giacomo Venturi, Franz E. Bauer, George C. Privon, Carolina Finlez, Sandra Zamora, Dusan Tubín-Arenas, Yiqing Song, Ignacio del Moral-Castro, Claudio Ricci, Cristina Ramos Almeida, Nancy A. Levenson, Vivian U, Anne M. Medling, Susanne Aalto, Giuseppe D’Ago, Valeria Olivares, Loreto Barcos Muñoz, Federica Ricci, Gustav Olander, Francisco Muller-Sanchez, Patricia B. Tissera   +22 more
doaj   +1 more source

Visit Nearby Halo Substructures Using LAMOST DR9 MRS Data

The Astrophysical Journal
Based on the LAMOST DR9 Medium Resolution Spectra (MRS) catalog, combined with astrometries from Gaia DR3, we conducted an investigation into the substructures in the stellar halo to obtain their chemical and kinematic information.
Xin-Zhe Tang, Jing-Kun Zhao, Yong Yang, Xian-Hao Ye, Gang Zhao, Qi Gao   +5 more
doaj   +1 more source

A Stellar Dynamical Mass for the Central Black Hole in MCG–06-30-15

The Astrophysical Journal
We present the stellar dynamical (SD) mass of the central black hole in the nearby Seyfert galaxy MCG–06-30-15 using the Schwarzschild orbit-superposition method implemented in the open-source code FORSTAND .
Nabanita Das, Misty C. Bentz, Eugene Vasiliev, Monica Valluri, Christopher A. Onken, Sandra. I. Raimundo, Marianne Vestergaard   +6 more
doaj   +1 more source

A spectroscopic map of the Galactic centre

Astronomy & Astrophysics
Context. The centre of the Milky Way is occupied by a dense nuclear star cluster that contains the supermassive black hole Sgr A⋆. The mildly flattened cluster is embedded in the larger surrounding nuclear stellar disc.
Feldmeier-Krause A., Maindl T. I., van de Ven G., Thater S., Jethwa P., Breda I.   +5 more
doaj   +1 more source

A Dual Active Black Hole Candidate with Mass Ratio ~7:1 in a Disk Galaxy

The Astrophysical Journal Letters
Dual active galactic nuclei (AGNs) with comparable masses are commonly witnessed among the major merged galaxies with interaction remnants. Considering almost every massive galaxy is associated with multiple dwarf satellites around it, minor mergers ...
Xiao Cao, Yan-Mei Chen, Yong Shi, Junfeng Wang, Zhijie Zhou, Min Bao, Qiusheng Gu, Alexei Moiseev, Luis C. Ho, Lan Wang, Guangquan Zeng   +10 more
doaj   +1 more source

Jet–ISM Interaction and Multichannel Active Galactic Nucleus Feedback in the Postmerger Galaxy 4C+29.30

The Astrophysical Journal
4C+29.30 is a postmerger galaxy hosting a rejuvenated active galactic nucleus (AGN) with a complex multiscale radio morphology, making it an ideal laboratory to study the interplay between different AGN feedback modes.
Xiao Cao, Junfeng Wang, Yan-Mei Chen, Min Bao, Xiaoyu Xu, Chunyi Zhang, Taotao Fang, Jianfeng Wu   +7 more
doaj   +1 more source

The MASSIVE Survey. XX. A Triaxial Stellar Dynamical Measurement of the Supermassive Black Hole Mass and Intrinsic Galaxy Shape of Giant Radio Galaxy NGC 315

The Astrophysical Journal
We present a new dynamical measurement of the supermassive black hole mass and intrinsic shape of the stellar halo of the massive radio galaxy NGC 315 as part of the MASSIVE survey.
Jacob Pilawa, Emily R. Liepold, Chung-Pei Ma, Jonelle L. Walsh, Jenny E. Greene   +4 more
doaj   +1 more source

Misaligned Gas Acquisition as a Formation Pathway of S0 Galaxies

The Astrophysical Journal
We analyze a sample of 753 S0 galaxies from the MPL-10 of Mapping Nearby Galaxies at Apache Point Observatory survey and investigate the gas–star kinematic misalignment and merger remnant fraction in galaxies with different morphological types.
Yuren Zhou, Yanmei Chen, Yong Shi, Qiusheng Gu, Junfeng Wang, Dmitry Bizyaev   +5 more
doaj   +1 more source

Tracing the kinematic perturbations of the Milky Way spiral arms with APOGEE Data Release 17 and Gaia Data Release 3

Astronomy & Astrophysics
Aims. We constrain the dynamical perturbations of the spiral arms in the Milky Way disk, based on the non-axisymmetric streaming motions of RGB stars revealed by APOGEE and Gaia. Methods. We developed a revised steady-state radial-velocity response model
Tang Xi-Can, Li Zhi, Simion Iulia T., Tian Hao, Luo Zhijian, Fan Shuting, Li Zi-Qi   +6 more
doaj   +1 more source

A giant disk galaxy two billion years after the Big Bang. [PDF]

Nat Astron
Wang W, Cantalupo S, Pensabene A, Galbiati M, Travascio A, Steidel CC, Maseda MV, Pezzulli G, de Beer S, Fossati M, Fumagalli M, Gallego SG, Lazeyras T, Mackenzie R, Matthee J, Nanayakkara T, Quadri G.   +16 more
europepmc   +1 more source