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Related papers: A Comparison between Nuclear Ring Star Formation i…

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The relation between the star formation rate and the stellar mass of star-forming galaxies has been used to argue that major mergers cannot be the main driver of star formation. Here, we re-examine these arguments using the representative…

Astrophysics of Galaxies · Physics 2015-06-19 M. Puech , F. Hammer , M. Rodrigues , S. Fouquet , H. Flores , K. Disseau

We examine the demographics of radio-emitting active galactic nuclei (AGN) in the local universe as a function of host galaxy properties, most notably both stellar mass and star formation rate. Radio AGN activity is theoretically implicated…

Astrophysics of Galaxies · Physics 2024-04-09 Arjun Suresh , Michael R. Blanton

Recent observational studies of the Galactic bulge by APOGEE have revealed that about 1% of the bulge stars have rather high nitrogen abundances ([N/Fe]>0.5). We here numerically investigate in what physical conditions these N-rich stars…

Astrophysics of Galaxies · Physics 2019-10-23 Kenji Bekki

We present Very Large Array observations of the 33 GHz radio continuum emission from 22 local ultraluminous and luminous infrared (IR) galaxies (U/LIRGs). These observations have spatial (angular) resolutions of 30--720 pc (0.07"-0.67") in…

The integrated properties of nuclear rings are correlated with their host galaxy's secular evolution and its dynamics, as well as with the formation and evolution of the ring's star cluster population(s). Here we present a new method to…

Astrophysics of Galaxies · Physics 2017-06-21 Chao Ma , Richard de Grijs , Luis C. Ho

Although nuclear rings of gas and star formation are common in barred spiral galaxies, current theories of why and how they form do not provide the level of detail needed to quantify the effect that these rings can have on the fueling of…

Astrophysics · Physics 2009-11-07 Michael W. Regan , Peter J. Teuben

We present the results of a Hubble Space Telescope WFC3 near-UV and ACS/WFC optical study into the star cluster populations of 10 luminous and ultra-luminous infrared galaxies (U/LIRGs) in the Great Observatories All-Sky LIRG Survey…

Nuclear rings are long-lived structures, allowing the molecular gas inside to become sufficiently dense to initiate star formation. This makes them a crucial element in the study of secular evolution. However, the morphology of nuclear…

Astrophysics of Galaxies · Physics 2025-07-15 P. Jiménez-Sánchez , S. Comerón , A. Prieto , J. H. Knapen

Galaxy star formation rates (SFRs) are sensitive to the local environment; for example, the high-density regions at the cores of dense clusters are known to suppress star formation. It has been suggested that galaxy transformation occurs…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-28 K. Tyler , G. H. Rieke , D. J. Wilman , S. L. McGee , R. G. Bower , L. Bai , J. S. Mulchaey , L. C. Parker , Y. Shi , D. Pierini

We present the first results of our program to study a sample of local luminous infrared galaxies (LIRGs, L_IR = 10^11-10^12 L_sun) with the Spitzer infrared spectrograph (IRS). In these proceedings we investigate the behavior of the 9.7 um…

Astrophysics of Galaxies · Physics 2010-05-07 M. Pereira-Santaella , A. Alonso-Herrero , G. H. Rieke , L. Colina

We present near-infrared (H- and K-band) integral-field observations of the circumnuclear star formation rings in five nearby spiral galaxies. The data, obtained at the Very Large Telescope with the SINFONI spectrograph, are used to…

Astrophysics · Physics 2009-11-13 T. Böker , J. Falcón-Barroso , E. Schinnerer , J. H. Knapen , S. Ryder

We study the spatially resolved Radio Continuum-Star Formation Rate (RC-SFR) relation using state-of-the-art star-formation (SF) tracers in a sample of 17 THINGS galaxies. We use hybrid Sigma_SFR maps (GALEX FUV plus Spitzer 24 mu), RC maps…

Astrophysics of Galaxies · Physics 2014-04-07 Volker Heesen , Elias Brinks , Adam K. Leroy , George Heald , Robert Braun , Frank Bigiel , Rainer Beck

We present the results of an optical spectral synthesis analysis for the nuclei of 20 Seyfert 2 and 4 Radio Galaxies, using a base of stellar population templates of different ages and metallicities and a power-law continuum. Compared with…

Astrophysics · Physics 2009-10-31 Henrique R. Schmitt , Thaisa Storchi-Bergmann , Roberto Cid Fernandes

Using combinations of H\alpha, ultraviolet (UV), and infrared (IR) emission, we estimate the star formation rate (SFR) surface density, \Sigma_SFR, at 1 kpc resolution for 30 disk galaxies that are targets of the IRAM HERACLES CO survey. We…

Using deep observations across three of the LOFAR Two-metre Sky Survey Deep Fields, this work measures the angular clustering of star forming galaxies (SFGs) and low-excitation radio galaxies (LERGs) to $z$$\lesssim$1.5 for faint sources,…

Cosmology and Nongalactic Astrophysics · Physics 2025-10-02 C. L. Hale , P. N. Best , K. J. Duncan , R. Kondapally , M. J. Jarvis , M. Magliocchetti , H. J. A. Röttgering , D. J. Schwarz , D. J. B. Smith , J. Zheng

Short lived radionuclides (SLRs) like $^{26}$Al are synthesized by massive stars and are a byproduct of star formation. The abundances of SLRs in the gas of a star-forming galaxy are inversely proportional to the gas consumption time. The…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 Brian C. Lacki

We present sub-arcsecond resolution ground-based near-infrared images of the central regions of a sample of twelve barred galaxies with circumnuclear star formation activity, which is organized in ring-like regions typically one kiloparsec…

Astrophysics · Physics 2009-10-31 D. Perez-Ramirez , J. H. Knapen , R. F. Peletier , S. Laine , R. Doyon , D. Nadeau

We use a complete sample of galaxies drawn from the SDSS to study how structure, star formation and nuclear activity depend on local density and on stellar mass. Local density is estimated by counting galaxies above a fixed absolute…

We have examined the nuclear spectra of very massive star-forming galaxies at $z \sim 0$ to understand how they differ from other galaxies with comparable masses, which are typically passive. We selected a sample of 126 nearby massive…

Astrophysics of Galaxies · Physics 2025-06-11 Jaimie R. Sheil , Michael J. I . Brown , Virginia A. Kilborn , Michelle E. Cluver , Thomas Jarrett

We present the results of a Herschel-PACS study of a sample of 97 LINERs at redshift z\sim 0.3 selected from the zCOSMOS survey. Of these sources, 34 are detected in a least one PACS band, enabling reliable estimates of the far-infrared…

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