Articles with "galaxy" as a keyword



Hot Dust in Ultraluminous Infrared Galaxies

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Published in 2017 at "Astrophysics"

DOI: 10.1007/s10511-017-9498-1

Abstract: Ultraluminous infrared galaxies with total luminosities an order of magnitude greater than that of our galaxy over wavelengths of λλ = 10-800 μm are characterized by a high mass concentration of dust. Because of this,… read more here.

Keywords: galaxy; interstellar gas; dust; infrared galaxies ... See more keywords

Optical detection of a GMRT-detected candidate high-redshift radio galaxy with 3.6-m Devasthal optical telescope

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Published in 2019 at "Journal of Astrophysics and Astronomy"

DOI: 10.1007/s12036-019-9583-4

Abstract: We report optical observations of TGSS J1054+5832, a candidate high-redshift ($$z=4.8\pm 2$$z=4.8±2) steep-spectrum radio galaxy, in r and i bands, using the faint object spectrograph and camera mounted on 3.6-m Devasthal Optical Telescope (DOT). The… read more here.

Keywords: high redshift; galaxy; radio; telescope ... See more keywords

Efficacy of galaxy catalogues for following up gravitational wave events

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Published in 2025 at "Journal of Astrophysics and Astronomy"

DOI: 10.1007/s12036-025-10097-1

Abstract: The detection of gravitational waves (GW) by the LIGO-Virgo-KAGRA (LVK) network has opened up a new era in astrophysics. The identification of the electromagnetic counterparts of GW sources is crucial for multi-messenger astronomy, one way… read more here.

Keywords: astrophysics; mass; galaxy; galaxy catalogues ... See more keywords

The remnant radio galaxy associated with NGC 1534

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Published in 2019 at "Publications of the Astronomical Society of Australia"

DOI: 10.1017/pasa.2018.26

Abstract: Abstract We present new observations of the large-scale radio emission surrounding the lenticular galaxy NGC 1534 with the Australia Telescope Compact Array and Murchison Widefield Array. We find no significant compact emission from the nucleus… read more here.

Keywords: radio emission; galaxy; radio; ngc 1534 ... See more keywords
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Outflows in the Seyfert 2 galaxy NGC 5643 traced by the [S iii] emission

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Published in 2018 at "Publications of the Astronomical Society of Australia"

DOI: 10.1017/pasa.2018.31

Abstract: Abstract We use Gemini Multi-Object Spectrograph integral Field Unit observations of the inner 285 × 400 pc2 region of the Seyfert 2 galaxy NGC 5643 to map the [S iii]λ9069 emission line flux distribution and… read more here.

Keywords: galaxy; galaxy ngc; kinematics; seyfert galaxy ... See more keywords

The GLEAMing of the first supermassive black holes: II. A new sample of high-redshift radio galaxy candidates

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Published in 2022 at "Publications of the Astronomical Society of Australia"

DOI: 10.1017/pasa.2022.42

Abstract: Abstract While unobscured and radio-quiet active galactic nuclei are regularly being found at redshifts $z > 6$ , their obscured and radio-loud counterparts remain elusive. We build upon our successful pilot study, presenting a new… read more here.

Keywords: galaxy; high redshift; new sample; survey ... See more keywords

Deblending overlapping galaxies in DECaLS using transformer-based algorithm: A method combining multiple bands and data types

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Published in 2024 at "Publications of the Astronomical Society of Australia"

DOI: 10.1017/pasa.2024.16

Abstract: Abstract In large-scale galaxy surveys, particularly deep ground-based photometric studies, galaxy blending was inevitable. Such blending posed a potential primary systematic uncertainty for upcoming surveys. Current deblenders predominantly depended on analytical modelling of galaxy profiles,… read more here.

Keywords: method; decals database; overlapping galaxies; transformer based ... See more keywords

Rotation of the globular cluster population of the dark matter deficient galaxy NGC 1052-DF4: Implication for the total mass

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Published in 2024 at "Publications of the Astronomical Society of Australia"

DOI: 10.1017/pasa.2024.42

Abstract: Abstract We explore the globular cluster population of NGC 1052-DF4, a dark matter deficient galaxy, using Bayesian inference to search for the presence of rotation. The existence of such a rotating component is relevant to… read more here.

Keywords: dark matter; 1052 df4; ngc 1052; galaxy ... See more keywords

More Local Volume dwarf galaxy candidates

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Published in 2025 at "Publications of the Astronomical Society of Australia"

DOI: 10.1017/pasa.2025.7

Abstract: Abstract We present the results of searching for new dwarf galaxies in the Local Volume. We found 40 satellite candidates in the double-virial-radius regions of 20 Milky Way-like and Large Magellanic Cloud (LMC)-like galaxies in… read more here.

Keywords: mathrm odot; local volume; galaxy; volume dwarf ... See more keywords

The stellar orbit distribution in present-day galaxies inferred from the CALIFA survey

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Published in 2017 at "Nature Astronomy"

DOI: 10.1038/s41550-017-0348-1

Abstract: Galaxy formation entails the hierarchical assembly of mass, along with the condensation of baryons and the ensuing, self-regulating star formation1,2. The stars form a collisionless system whose orbit distribution retains dynamical memory that can constrain… read more here.

Keywords: galaxy; orbit distribution; califa survey; present day ... See more keywords

A relation between the characteristic stellar ages of galaxies and their intrinsic shapes

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Published in 2018 at "Nature Astronomy"

DOI: 10.1038/s41550-018-0436-x

Abstract: Stellar population and stellar kinematic studies provide unique but complementary insights into how galaxies build-up their stellar mass and angular momentum1–3. A galaxy’s mean stellar age reveals when stars were formed, but provides little constraint… read more here.

Keywords: galaxy; age; stellar population; resolved stellar ... See more keywords