The nuclear near-infrared spectral properties of nearby galaxies
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , , , , , , , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/126972 |
Resumo: | We present spectra of the nuclear regions of 50 nearby (D = 1–92 Mpc, median = 20 Mpc) galaxies of morphological types E to Sm. The spectra, obtained with the Gemini Near-IR Spectrograph on the Gemini North telescope, cover a wavelength range of approximately 0.85–2.5 μm at R ∼ 1300–1800. There is evidence that most of the galaxies host an active galactic nucleus (AGN), but the range of AGN luminosities (log (L2-10 keV [erg s−1]) = 37.0–43.2) in the sample means that the spectra display a wide variety of features. Some nuclei, especially the Seyferts, exhibit a rich emission-line spectrum. Other objects, in particular the type 2 Low Ionization Nuclear Emission Region galaxies, show just a few, weak emission lines, allowing a detailed view of the underlying stellar population. These spectra display numerous absorption features sensitive to the stellar initial mass function, as well as molecular bands arising in cool stars, and many other atomic absorption lines. We compare the spectra of subsets of galaxies known to be characterized by intermediate-age and old stellar populations, and find clear differences in their absorption lines and continuum shapes. We also examine the effect of atmospheric water vapor on the signal-to-noise ratio achieved in regions between the conventional NIR atmospheric windows, which are of potential interest to those planning observations of redshifted emission lines or other features affected by telluric H2O. Further exploitation of this data set is in progress, and the reduced spectra and data reduction tools are made available to the community. |
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Mason, Rachel E.Rodriguez-Ardila, AlbertoMartins, Lucimara PiresRiffel, RogérioGonzalez Martin, OmairaRamos Almeida, CristinaDutra, Daniel RuschelHo, Luis C.Thanjavur, KarunFlohic, HeleneAlonso-Herrero, AlmudenaLira, PaulinaMcDermid, RichardRiffel, Rogemar AndréSchiavon, Ricardo P.Winge, ClaudiaHoenig, Michael D.Perlman, Eric2015-09-18T01:58:25Z20150067-0049http://hdl.handle.net/10183/126972000973781We present spectra of the nuclear regions of 50 nearby (D = 1–92 Mpc, median = 20 Mpc) galaxies of morphological types E to Sm. The spectra, obtained with the Gemini Near-IR Spectrograph on the Gemini North telescope, cover a wavelength range of approximately 0.85–2.5 μm at R ∼ 1300–1800. There is evidence that most of the galaxies host an active galactic nucleus (AGN), but the range of AGN luminosities (log (L2-10 keV [erg s−1]) = 37.0–43.2) in the sample means that the spectra display a wide variety of features. Some nuclei, especially the Seyferts, exhibit a rich emission-line spectrum. Other objects, in particular the type 2 Low Ionization Nuclear Emission Region galaxies, show just a few, weak emission lines, allowing a detailed view of the underlying stellar population. These spectra display numerous absorption features sensitive to the stellar initial mass function, as well as molecular bands arising in cool stars, and many other atomic absorption lines. We compare the spectra of subsets of galaxies known to be characterized by intermediate-age and old stellar populations, and find clear differences in their absorption lines and continuum shapes. We also examine the effect of atmospheric water vapor on the signal-to-noise ratio achieved in regions between the conventional NIR atmospheric windows, which are of potential interest to those planning observations of redshifted emission lines or other features affected by telluric H2O. Further exploitation of this data set is in progress, and the reduced spectra and data reduction tools are made available to the community.application/pdfengThe astrophysical journal. Supplement series. Chicago. Vol. 217, no. 1 (Mar.2015), 13, 27 p.Nucleo galaticoGaláxias ativasDeslocamento para o vermelhoGalaxies: activeGalaxies: nucleiGalaxies: seyfertGalaxies: stellar contentInfrared: galaxiesSupporting material: extended figureFigure setThe nuclear near-infrared spectral properties of nearby galaxiesEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000973781.pdf000973781.pdfTexto completo (inglês)application/pdf5413767http://www.lume.ufrgs.br/bitstream/10183/126972/1/000973781.pdf941c7b9504848b88393b7b398084bc59MD51TEXT000973781.pdf.txt000973781.pdf.txtExtracted Texttext/plain146514http://www.lume.ufrgs.br/bitstream/10183/126972/2/000973781.pdf.txtb1b6027e449632cd7fd969759b0df6e4MD52THUMBNAIL000973781.pdf.jpg000973781.pdf.jpgGenerated Thumbnailimage/jpeg1970http://www.lume.ufrgs.br/bitstream/10183/126972/3/000973781.pdf.jpg1896380c0d18c955dad9a13f73079a69MD5310183/1269722023-09-29 03:35:19.615668oai:www.lume.ufrgs.br:10183/126972Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-09-29T06:35:19Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
The nuclear near-infrared spectral properties of nearby galaxies |
title |
The nuclear near-infrared spectral properties of nearby galaxies |
spellingShingle |
The nuclear near-infrared spectral properties of nearby galaxies Mason, Rachel E. Nucleo galatico Galáxias ativas Deslocamento para o vermelho Galaxies: active Galaxies: nuclei Galaxies: seyfert Galaxies: stellar content Infrared: galaxies Supporting material: extended figure Figure set |
title_short |
The nuclear near-infrared spectral properties of nearby galaxies |
title_full |
The nuclear near-infrared spectral properties of nearby galaxies |
title_fullStr |
The nuclear near-infrared spectral properties of nearby galaxies |
title_full_unstemmed |
The nuclear near-infrared spectral properties of nearby galaxies |
title_sort |
The nuclear near-infrared spectral properties of nearby galaxies |
author |
Mason, Rachel E. |
author_facet |
Mason, Rachel E. Rodriguez-Ardila, Alberto Martins, Lucimara Pires Riffel, Rogério Gonzalez Martin, Omaira Ramos Almeida, Cristina Dutra, Daniel Ruschel Ho, Luis C. Thanjavur, Karun Flohic, Helene Alonso-Herrero, Almudena Lira, Paulina McDermid, Richard Riffel, Rogemar André Schiavon, Ricardo P. Winge, Claudia Hoenig, Michael D. Perlman, Eric |
author_role |
author |
author2 |
Rodriguez-Ardila, Alberto Martins, Lucimara Pires Riffel, Rogério Gonzalez Martin, Omaira Ramos Almeida, Cristina Dutra, Daniel Ruschel Ho, Luis C. Thanjavur, Karun Flohic, Helene Alonso-Herrero, Almudena Lira, Paulina McDermid, Richard Riffel, Rogemar André Schiavon, Ricardo P. Winge, Claudia Hoenig, Michael D. Perlman, Eric |
author2_role |
author author author author author author author author author author author author author author author author author |
dc.contributor.author.fl_str_mv |
Mason, Rachel E. Rodriguez-Ardila, Alberto Martins, Lucimara Pires Riffel, Rogério Gonzalez Martin, Omaira Ramos Almeida, Cristina Dutra, Daniel Ruschel Ho, Luis C. Thanjavur, Karun Flohic, Helene Alonso-Herrero, Almudena Lira, Paulina McDermid, Richard Riffel, Rogemar André Schiavon, Ricardo P. Winge, Claudia Hoenig, Michael D. Perlman, Eric |
dc.subject.por.fl_str_mv |
Nucleo galatico Galáxias ativas Deslocamento para o vermelho |
topic |
Nucleo galatico Galáxias ativas Deslocamento para o vermelho Galaxies: active Galaxies: nuclei Galaxies: seyfert Galaxies: stellar content Infrared: galaxies Supporting material: extended figure Figure set |
dc.subject.eng.fl_str_mv |
Galaxies: active Galaxies: nuclei Galaxies: seyfert Galaxies: stellar content Infrared: galaxies Supporting material: extended figure Figure set |
description |
We present spectra of the nuclear regions of 50 nearby (D = 1–92 Mpc, median = 20 Mpc) galaxies of morphological types E to Sm. The spectra, obtained with the Gemini Near-IR Spectrograph on the Gemini North telescope, cover a wavelength range of approximately 0.85–2.5 μm at R ∼ 1300–1800. There is evidence that most of the galaxies host an active galactic nucleus (AGN), but the range of AGN luminosities (log (L2-10 keV [erg s−1]) = 37.0–43.2) in the sample means that the spectra display a wide variety of features. Some nuclei, especially the Seyferts, exhibit a rich emission-line spectrum. Other objects, in particular the type 2 Low Ionization Nuclear Emission Region galaxies, show just a few, weak emission lines, allowing a detailed view of the underlying stellar population. These spectra display numerous absorption features sensitive to the stellar initial mass function, as well as molecular bands arising in cool stars, and many other atomic absorption lines. We compare the spectra of subsets of galaxies known to be characterized by intermediate-age and old stellar populations, and find clear differences in their absorption lines and continuum shapes. We also examine the effect of atmospheric water vapor on the signal-to-noise ratio achieved in regions between the conventional NIR atmospheric windows, which are of potential interest to those planning observations of redshifted emission lines or other features affected by telluric H2O. Further exploitation of this data set is in progress, and the reduced spectra and data reduction tools are made available to the community. |
publishDate |
2015 |
dc.date.accessioned.fl_str_mv |
2015-09-18T01:58:25Z |
dc.date.issued.fl_str_mv |
2015 |
dc.type.driver.fl_str_mv |
Estrangeiro info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/126972 |
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0067-0049 |
dc.identifier.nrb.pt_BR.fl_str_mv |
000973781 |
identifier_str_mv |
0067-0049 000973781 |
url |
http://hdl.handle.net/10183/126972 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
The astrophysical journal. Supplement series. Chicago. Vol. 217, no. 1 (Mar.2015), 13, 27 p. |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
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openAccess |
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