English
Related papers

Related papers: Investigating the clumpy star formation in an inte…

200 papers

We describe a new wide field Hubble Space Telescope survey of the galaxy cluster Cl0024+16 (z~0.4) consisting of a sparse-sampled mosaic of 39 Wide Field and Planetary Camera 2 images which extends to a cluster radius of 5 Mpc. [Abridged]…

Astrophysics · Physics 2009-11-07 T. Treu , R. S. Ellis , J. -P. Kneib , A. Dressler , I. Smail , O. Czoske , A. Oemler , P. Natarajan

The effect of galaxy interactions on star formation has been investigated using Data Release 1 of the Sloan Digital Sky Survey (SDSS). Both the imaging and spectroscopy data products have been used to construct a catalogue of nearest…

Astrophysics · Physics 2007-05-23 B. Nikolic , H. Cullen , P. Alexander

In the hierarchical structure formation model of the universe, galaxy clusters are assembled through a series of mergers. Accordingly, it is expected that galaxy clusters in the early universe are actively forming and dynamically young.…

Cosmology and Nongalactic Astrophysics · Physics 2020-04-15 Kyle Finner , M. James Jee , Tracy Webb , Gillian Wilson , Saul Perlmutter , Adam Muzzin , Julie Hlavacek-Larrondo

We present the results of our study of starforming regions in the lenticular galaxy NGC 4324. During a complex analysis of multiwavelength observational data -- the narrow-band emission-line images obtained with the 2.5-m telescope at the…

Astrophysics of Galaxies · Physics 2022-10-17 I. S. Proshina , A. V. Moiseev , O. K. Sil'chenko

We report on a study of young star cluster complexes in the spiral galaxy M51. Recent studies have confirmed that star clusters do not form in isolation, but instead tend to form in larger groupings or complexes. We use {\it HST} broad and…

Astrophysics · Physics 2009-11-11 Nate Bastian , Mark Gieles , Yuri N. Efremov , Henny J. G. L. M. Lamers

We present $\mathrm{^{12}CO}$ and $\mathrm{^{13}CO}$ molecular gas data observed by ALMA, massive early stage young stellar objects identified by applying color-magnitude cuts to \textit{Spitzer} and \textit{Herschel} photometry, and…

Astrophysics of Galaxies · Physics 2022-02-09 Omnarayani Nayak , Margaret Meixner , Remy Indebetouw , Guido De Marchi , Anton Koekemoer , Nino Panagia , Elena Sabbi

We use optical spectroscopy from VLT/MUSE, as well as photometric observations from HST and VLT/HAWK-I, to study the morpho-kinematics of 17 low mass MACS J0416.1-2403 cluster galaxies at R200 and 5 field galaxies with a redshift of z~0.4.…

Astrophysics of Galaxies · Physics 2022-11-16 B. I. Ciocan , B. L. Ziegler , A. Böhm , M. Verdugo , C. Maier

The population of compact massive galaxies observed at z > 1 are hypothesised, both observationally and in simulations, to be merger remnants of gas-rich disc galaxies. To probe such a scenario we analyse a sample of 12 gas-rich and active…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 E. Ricciardelli , I. Trujillo , F. Buitrago , C. J. Conselice

Interactions and mergers play an important role in regulating the physical properties of galaxies, such as their morphology, gas content, and star formation rate (SFR). Controversy exists as to the degree to which these events, even…

Astrophysics of Galaxies · Physics 2023-08-16 Yang A. Li , Luis C. Ho , Jinyi Shangguan

We present near-infrared integral-field spectroscopic observations targeting H$\alpha$ in eight sub-millimeter galaxies (SMGs) at $z$=1.3-2.5 using VLT/SINFONI, obtaining significant detections for six of them. The star formation rates…

We present a 2D study of star formation at kpc and sub-kpc scales of a sample of local (z<0.1) U/LIRGs, based on near-IR VLT-SINFONI observations. We obtained integrated measurements of the star formation rate (SFR) and star formation rate…

To investigate what drives the reversal of the morphology-density relation at intermediate/high redshift, we present a multi-wavelength analysis of 27 dusty starburst galaxies in the massive cluster Cl 0024+17 at z = 0.4. We combine H-alpha…

Astrophysics of Galaxies · Physics 2016-05-25 H. L. Johnson , C. M. Harrison , A. M. Swinbank , R. G. Bower , Ian Smail , Y. Koyama , J. E. Geach

Early galaxy formation, initiated by the dark matter and gas assembly, evolves through frequent mergers and feedback processes into dynamically hot, chaotic structures. In contrast, dynamically cold, smooth rotating disks have been observed…

We present a UV, optical and near-infrared (near-IR) study of the star-forming complexes in the nearby peculiar galaxy NGC 3718, using UVIT, GALEX, Spitzer and DECaLS imaging data. The galaxy has a disturbed optical morphology due to the…

Astrophysics of Galaxies · Physics 2024-08-20 Chandan Watts , Mousumi Das , Sudhanshu Barway

We investigate the formation of jellyfish galaxies using radiation-hydrodynamic simulations of gas-rich dwarf galaxies with a multi-phase interstellar medium (ISM). We find that the ram-pressure-stripped (RPS) ISM is the dominant source of…

Astrophysics of Galaxies · Physics 2022-04-13 Jaehyun Lee , Taysun Kimm , Jérémy Blaizot , Harley Katz , Wonki Lee , Yun-Kyeong Sheen , Julien Devriendt , Adrianne Slyz

We investigate the star-formation ocurring in the region towards IRAS07527-3446 in the molecular cloud [MAB97]250.63-3.63, in the far outer Galaxy. We report the discovery of a new young stellar cluster, and describe its properties and…

Astrophysics of Galaxies · Physics 2015-05-13 Joao L. Yun , Davide Elia , Pedro M. Palmeirim , Joana I. Gomes , Andre M. Martins

We combine imaging data from the Advanced Camera for Surveys (ACS) with VLT/FORS optical spectroscopy to study the properties of star-forming galaxies in the z=0.837 cluster CL0152-1357. We have morphological information for 24 star-forming…

We present the first integral-field spectroscopic observations of high-redshift submillimeter-selected galaxies (SMGs) using Laser Guide Star Adaptive Optics (LGS-AO). We target H-alpha emission of three SMGs at redshifts z~1.4-2.4 with the…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-15 Karín Menéndez-Delmestre , Andrew W. Blain , Mark Swinbank , Ian Smail , Rob J. Ivison , Scott C. Chapman , Thiago S. Gonçalves

Abreg: By combining HST/UDF imagery with kinematics from VLT/GIRAFFE we derive a physical model of distant galaxy J033245.11-274724.0 in a way similar to what can be done in the nearby Universe. Here we study the properties of a distant…

Astrophysics of Galaxies · Physics 2009-11-13 F. Hammer , H. Flores , Y. B. Yang , E. Athanassoula , M. Puech , M. Rodrigues , S. Peirani

We present new, high-angular resolution interferometric observations with the Karl G. Jansky Very Large Array of $^{12}$CO $J=1-0$ line emission and 4-8 GHz continuum emission in the strongly lensed, $z=2.3$ submillimetre galaxy, SMM…

Astrophysics of Galaxies · Physics 2015-06-23 A. P. Thomson , R. J. Ivison , Frazer N. Owen , A. L. R Danielson , A. M. Swinbank , Ian Smail