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相关论文: Co-evolution of Nuclear Rings, Bars and the Centra…

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Context. Bars are elongated structures developed by a large fraction of disk galaxies in their central few kiloparsecs. However, the bar formation process is still not fully understood, particularly the role played by the galaxy environment…

Integral-field spectroscopy in the near-infrared (NIR) is a powerful tool to analyze the gaseous and stellar distributions and kinematics, as well as the excitation mechanisms in the centers of galaxies. The unique combination of NIR and…

星系天体物理 · 物理学 2015-11-11 Gerold Busch , Nastaran Fazeli , Semir Smajić , Andreas Eckart , Lydia Moser , Mónica Valencia-S.

The circumnuclear star-forming ring of the barred spiral galaxy NGC 1097 provides a unique laboratory to study star formation under extreme conditions. This work aims to derive the physical properties of the circumnuclear star-forming…

星系天体物理 · 物理学 2026-02-11 Sandra Zamora , Angeles I. Díaz , Asier Castrillo

We study the mid-infrared properties of a sample of 69 nearby spiral galaxies, selected to avoid Seyfert activity contributing a significant fraction of the central energetics, or strong tidal interaction, and to have normal infrared…

天体物理学 · 物理学 2009-11-06 H. Roussel , M. Sauvage , L. Vigroux , A. Bosma , C. Bonoli , P. Gallais , T. Hawarden , S. Madden , P. Mazzei

Galaxy clusters provide powerful laboratories for the study of galaxy evolution, particularly the origin of correlations of morphology and star formation rate (SFR) with density. We construct visible to MIR spectral energy distributions…

宇宙学与河外天体物理 · 物理学 2015-06-03 David W. Atlee , Paul Martini

We present 19.7, 31.5, and 37.1 {\mu}m images of the inner 6 pc of the Galactic Center of the Milky Way with a spatial resolution of 3.2 - 4.6'' taken by the Faint Object Infrared Camera on the Stratospheric Observatory for Infrared…

星系天体物理 · 物理学 2015-06-16 R. M. Lau , T. L. Herter , M. R. Morris , E. E. Becklin , J. D. Adams

I review the arguments for the importance of halo structure in driving galaxy evolution and coupling a galaxy to its environment. We begin with a general discussion of the key dynamics and examples of structure dominated by modes. We find…

天体物理学 · 物理学 2007-05-23 Martin D. Weinberg

The Star formation rate (SFR) is a crucial parameter to investigate galaxy evolution. At low redshift the cosmic SFR density declines smoothly, and massive active galaxies become passive, reducing their star formation activity. This implies…

We have performed a multi-transition CO study of the centers of seven double-barred galaxies that exhibit a variety of molecular gas morphologies to determine if the molecular gas properties are correlated with the nuclear morphology and…

天体物理学 · 物理学 2009-11-07 Glen Petitpas , Christine Wilson

We combine available constraints on the local CII 158 $\mu$m line luminosity function from galaxy observations (Hemmati et al. 2017), with the evolution of the star-formation rate density and the recent CII intensity mapping measurement in…

宇宙学与河外天体物理 · 物理学 2019-07-24 Hamsa Padmanabhan

The specific star-formation rate of star-forming `main sequence' galaxies significantly decreased since z~1.5, due to the decreasing molecular gas fraction and star formation efficiency. However, the radio-infrared (IR) correlation has not…

星系天体物理 · 物理学 2025-01-29 B. Vollmer , J. Freundlich , P. Gratier , Th. Lizee , M. Lendrin , J. Braine , M. Soida

(Abridged) We present results for J and Ks near-IR imaging data on a large sample of 88 galaxies drawn from the catalogue of Impey et al. (1996). The near-IR data unveils many features of LSBGs not seen before in the optical. First, a high…

天体物理学 · 物理学 2009-11-07 Gaspar Galaz , Julianne Dalcanton , Leopoldo Infante , Ezequiel Treister

As a result of a systematic NIR H-band (1.65 micron) imaging survey of normal galaxies in the local universe, we are able to measure in a highly homogeneous way photometric and structural properties for a sample of 1143 galaxies. We base…

天体物理学 · 物理学 2009-11-07 M. Scodeggio , G. Gavazzi , P. Franzetti , A. Boselli , S. Zibetti , D. Pierini

CAIRNS (Cluster And Infall Region Nearby Survey) is a spectroscopic survey of the infall regions surrounding nine nearby rich clusters of galaxies. In Paper I, we used redshifts within $\sim 10\Mpc$ of the centers of the clusters to…

天体物理学 · 物理学 2008-11-26 K. Rines , M. J. Geller , A. Diaferio , M. J. Kurtz , T. H. Jarrett

Nuclear stellar cusps are defined as central excess light component in the stellar light profiles of galaxies and are suggested to be stellar relics of intense compact starbursts in the central ~100-500 pc region of gas-rich major mergers.…

We study the first 100Myr of the evolution of isolated star clusters initially containing 144179 stars, including 13107 (10%) primordial hard binaries. Our calculations include the effects of both stellar and binary evolution. Gravitational…

天体物理学 · 物理学 2008-11-26 Simon Portegies Zwart , Steve McMillan , Jun Makino

Due to the extreme extinction towards the Galactic centre ($A_{V} \sim 30$ mag), its stellar population is mainly studied in the near-infrared (NIR) regime. Therefore, a proper analysis of the NIR extinction curve is necessary to fully…

Galactic bars can affect the evolution of galaxies by redistributing gas in galaxies, possibly contributing to the cessation of star formation. Recent works point to 'bar quenching' playing an important role in massive disk galaxies like…

星系天体物理 · 物理学 2020-01-22 Lucy Newnham , Kelley Hess , Karen Masters , Sandor Kruk , Samanta Penny , Tim Lingard , Rebecca Smethurst

We present new HST I-band images of a sample of 77 nearby, late-type spiral galaxies with low inclination. The main purpose of this catalog is to study the frequency and properties of nuclear star clusters. In 59 galaxies of our sample, we…

We analyze the morphological properties of a large sample of 1503 70 micron selected galaxies in the COSMOS field spanning the redshift range 0.01<z< 3.5 with a median redshift of 0.5 and an infrared luminosity range of 10^8<L_IR<10^14L_sun…