Výsledky vyhledávání - "Crispin Logan"

Akademický článek

Dust Deficiency in the Interacting Galaxy NGC 3077

Autor: Jairo Armijos-Abendaño, Ericson López, Mario Llerena, Franklin Aldás, Crispin Logan

Publikováno v: Galaxies, Vol 5, Iss 3, p 53 (2017)

Using 70 μ m observations taken with the PACS instrument of the Herschel space telescope, the dust content of the nearby and interacting spiral galaxy NGC 3077 has been compared with the dust content of the isolated galaxies such as NGC 2841, NGC 31

Externí odkaz: https://doaj.org/article/955647772aef428b9e8f99473d0f899b

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Unsupervised star, galaxy, QSO classification : application of HDBSCAN

Autor: Crispin Logan, Sotiria Fotopoulou

Publikováno v: Astronomy & astrophysics, 2020, Vol.633, pp.A154 [Peer Reviewed Journal]
Logan, C H A & Fotopoulou, S 2020, ' Unsupervised star, galaxy, QSO classification. Application of HDBSCAN ', Astronomy and Astrophysics . https://doi.org/10.1051/0004-6361/201936648

Classification will be an important first step for upcoming surveys that will detect billions of new sources such as LSST and Euclid, as well as DESI, 4MOST and MOONS. The application of traditional methods of model fitting and colour-colour selectio

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f2236a55fd2f9c43651375e93dd28254
http://dro.dur.ac.uk/30214/1/30214.pdf

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Study of diffuse H II regions potentially forming part of the gas streams around Sgr A*

Autor: Mario Llerena, Crispin Logan, A Báez-Rubio, Arturo Rodríguez-Franco, Jesús Martín-Pintado, Sergio Martín, Jairo Armijos-Abendaño, Manuel Aravena, Franklin Aldás, Ericson López, M. A. Requena-Torres

Publikováno v: Monthly Notices of the Royal Astronomical Society. 476:2446-2456

We present a study of diffuse extended ionised gas toward three clouds located in the Galactic Centre (GC). One line of sight (LOS) is toward the 20 km s$^{-1}$ cloud (LOS$-$0.11) in the Sgr A region, another LOS is toward the 50 km s$^{-1}$ cloud (L

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::062b8010214a9f96ac8a97ef03d834fa
https://doi.org/10.1093/mnras/sty391

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The XXL Survey:XXXIII. Chandra constraints on the AGN contamination of z > 1 XXL galaxy clusters

Autor: J. P. Willis, M. E. Ramos-Ceja, Marguerite Pierre, Elias Koulouridis, L. Chiappetti, Mark Birkinshaw, Cristian Vignali, N. Clerc, Florian Pacaud, Crispin Logan, B. J. Maughan, Paul Giles, L. Faccioli, Malcolm N. Bremer

Publikováno v: Logan, C H A, Maughan, B J, Bremer, M N, Giles, P, Birkinshaw, M, Chiappetti, L, Clerc, N, Faccioli, L, Koulouridis, E, Pacaud, F, Pierre, M, Ramos-Ceja, M E, Vignali, C & Willis, J P 2018, ' The XXL Survey : XXXIII. Chandra constraints on the AGN contamination of z > 1 XXL galaxy clusters ', Astronomy and Astrophysics, vol. 620, A18 . https://doi.org/10.1051/0004-6361/201833654
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, 2018, 620, pp.A18. ⟨10.1051/0004-6361/201833654⟩
Astron.Astrophys.
Astron.Astrophys., 2018, 620, pp.A18. ⟨10.1051/0004-6361/201833654⟩
Astronomy and Astrophysics-A&A, EDP Sciences, 2018, 620, pp.A18. ⟨10.1051/0004-6361/201833654⟩

Context. The XMM-XXL survey has used observations from the XMM-Newton observatory to detect clusters of galaxies over a wide range in mass and redshift. The moderate PSF (FWHM ~ 6″ on-axis) of XMM-Newton means that point sources within or projected

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2aa9e60ce1e3a3a3f074f731c1f04095
https://research-information.bris.ac.uk/en/publications/01c6aab3-4ee6-471e-9baa-412665432726

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The XXL Survey - XVII. X-ray and Sunyaev-Zel’dovich properties of the redshift 2.0 galaxy cluster XLSSC 122

Autor: John E. Carlstrom, Florian Pacaud, Crispin Logan, Marguerite Pierre, Daniel P. Marrone, B. J. Maughan, Steven W. Allen, Jon Willis, Adam Mantz, Zubair Abdulla

Publikováno v: Astron.Astrophys.
Astron.Astrophys., 2018, 620, pp.A2. ⟨10.1051/0004-6361/201630096⟩
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2018, 620, pp.A2. ⟨10.1051/0004-6361/201630096⟩
Mantz, A B, Abdulla, Z, Allen, S W, Carlstrom, J E, Logan, C H A, Marrone, D P, Maughan, B J, Willis, J P, Pacaud, F & Pierre, M 2018, ' The XXL Survey : XVII. X-ray and Sunyaev-Zel'dovich properties of the redshift 2.0 galaxy cluster XLSSC 122 ', Astronomy and Astrophysics, vol. 620, A2 . https://doi.org/10.1051/0004-6361/201630096
Astronomy and Astrophysics-A&A, 2018, 620, pp.A2. ⟨10.1051/0004-6361/201630096⟩

We present results from a 100 ks XMM-Newton observation of galaxy cluster XLSSC 122, the first massive cluster discovered through its X-ray emission at $z\approx2$. The data provide the first precise constraints on the bulk thermodynamic properties o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b86df9f1d6d5ac915b16724a8d67909f
https://hal.archives-ouvertes.fr/hal-01937188

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Dust Deficiency in the Interacting Galaxy NGC 3077

Autor: Crispin Logan, Ericson López, Jairo Armijos-Abendaño, Mario Llerena, Franklin Aldás

Publikováno v: Galaxies, Vol 5, Iss 3, p 53 (2017)
Armijos-Abendaño, J, López, E, Llerena, M, Aldás, F & Logan, C 2017, ' Dust deficiency in the interacting galaxy NGC 3077 ', Galaxies, vol. 5, no. 3, 53 . https://doi.org/10.3390/galaxies5030053
Galaxies; Volume 5; Issue 3; Pages: 53

Using 70 μm observations taken with the PACS instrument of the Herschel space telescope, the dust content of the nearby and interacting spiral galaxy NGC 3077 has been compared with the dust content of the isolated galaxies such as NGC 2841, NGC 318

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::897cc41e7e305e263fdd51fce45cc3bc
http://arxiv.org/abs/1709.05280

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