HETDEX-LOFAR Spectroscopic Redshift Catalog
We combine the power of blind integral field spectroscopy from the Hobby–Eberly Telescope (HET) Dark Energy Experiment (HETDEX) with sources detected by the Low Frequency Array (LOFAR) to construct the HETDEX-LOFAR Spectroscopic Redshift Catalog. Starting from the first data release of the LOFAR Two...
Saved in:
| Main Authors: | , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2024-01-01
|
| Series: | The Astrophysical Journal |
| Subjects: | |
| Online Access: | https://doi.org/10.3847/1538-4357/ad957b |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850050735822077952 |
|---|---|
| author | Maya H. Debski Gregory R. Zeimann Gary J. Hill Donald P. Schneider Leah Morabito Gavin Dalton Matt J. Jarvis Erin Mentuch Cooper Robin Ciardullo Eric Gawiser Nika Jurlin |
| author_facet | Maya H. Debski Gregory R. Zeimann Gary J. Hill Donald P. Schneider Leah Morabito Gavin Dalton Matt J. Jarvis Erin Mentuch Cooper Robin Ciardullo Eric Gawiser Nika Jurlin |
| author_sort | Maya H. Debski |
| collection | DOAJ |
| description | We combine the power of blind integral field spectroscopy from the Hobby–Eberly Telescope (HET) Dark Energy Experiment (HETDEX) with sources detected by the Low Frequency Array (LOFAR) to construct the HETDEX-LOFAR Spectroscopic Redshift Catalog. Starting from the first data release of the LOFAR Two-metre Sky Survey, including a value-added catalog with photometric redshifts, we extracted 28,705 HETDEX spectra. Using an automatic classifying algorithm, we assigned each object a star, galaxy, or quasar label along with a velocity/redshift, with supplemental classifications coming from the continuum and emission-line catalogs of the internal, fourth data release from HETDEX (HDR4). We measured 9087 new redshifts; in combination with the value-added catalog, our final spectroscopic redshift sample is 9710 sources. This new catalog contains the highest substantial fraction of LOFAR galaxies with spectroscopic redshift information; it improves archival spectroscopic redshifts and facilitates research to determine the [O ii ] emission properties of radio galaxies from 0.0 < z < 0.5, and the Ly α emission characteristics of both radio galaxies and quasars from 1.9 < z < 3.5. Additionally, by combining the unique properties of LOFAR and HETDEX, we are able to measure star formation rates (SFRs) and stellar masses. Using the Visible Integral-field Replicable Unit Spectrograph, we measure the emission lines of [O iii ], [Ne iii ], and [O ii ] and evaluate line-ratio diagnostics to determine whether the emission from these galaxies is dominated by active galactic nuclei or star formation and fit a new SFR– L _150MHz relationship. |
| format | Article |
| id | doaj-art-9a7044b098d94068942e85d539693a4b |
| institution | DOAJ |
| issn | 1538-4357 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj-art-9a7044b098d94068942e85d539693a4b2025-08-20T02:53:22ZengIOP PublishingThe Astrophysical Journal1538-43572024-01-01978110110.3847/1538-4357/ad957bHETDEX-LOFAR Spectroscopic Redshift CatalogMaya H. Debski0https://orcid.org/0000-0002-1998-5677Gregory R. Zeimann1https://orcid.org/0000-0003-2307-0629Gary J. Hill2https://orcid.org/0000-0001-6717-7685Donald P. Schneider3https://orcid.org/0000-0001-7240-7449Leah Morabito4https://orcid.org/0000-0003-0487-6651Gavin Dalton5https://orcid.org/0000-0002-3031-2588Matt J. Jarvis6https://orcid.org/0000-0001-7039-9078Erin Mentuch Cooper7https://orcid.org/0000-0002-2307-0146Robin Ciardullo8https://orcid.org/0000-0002-1328-0211Eric Gawiser9https://orcid.org/0000-0003-1530-8713Nika Jurlin10https://orcid.org/0000-0003-4270-5968Department of Astronomy, The University of Texas at Austin , 2515 Speedway Boulevard, Austin, TX 78712, USAHobby Eberly Telescope, The University of Texas at Austin , 2515 Speedway Boulevard, Austin, TX, 78712, USA; McDonald Observatory, The University of Texas at Austin , 2515 Speedway Boulevard, Austin, TX 78712, USADepartment of Astronomy, The University of Texas at Austin , 2515 Speedway Boulevard, Austin, TX 78712, USA; McDonald Observatory, The University of Texas at Austin , 2515 Speedway Boulevard, Austin, TX 78712, USADepartment of Astronomy & Astrophysics, The Pennsylvania State University , University Park, PA 16802, USA; Institute for Gravitation and the Cosmos, The Pennsylvania State University , University Park, PA 16802, USACentre for Extragalactic Astronomy, Department of Physics, Durham University , South Road, Durham DH1 3LE, UK; Institute for Computational Cosmology, Department of Physics, Durham University , South Road, Durham DH1 3LE, UKOxford Astrophysics, University of Oxford , Keble Road, Oxford OX1 3RH, UK; RALSpace, STFC Rutherford Appleton Laboratory , Didcot OX11 0QX, UKOxford Astrophysics, University of Oxford , Keble Road, Oxford OX1 3RH, UKDepartment of Astronomy, The University of Texas at Austin , 2515 Speedway Boulevard, Austin, TX 78712, USA; McDonald Observatory, The University of Texas at Austin , 2515 Speedway Boulevard, Austin, TX 78712, USADepartment of Astronomy & Astrophysics, The Pennsylvania State University , University Park, PA 16802, USA; Institute for Gravitation and the Cosmos, The Pennsylvania State University , University Park, PA 16802, USADepartment of Physics and Astronomy, Rutgers, the State University of New Jersey , Piscataway, NJ 08854, USADepartment of Astronomy, The University of Texas at Austin , 2515 Speedway Boulevard, Austin, TX 78712, USAWe combine the power of blind integral field spectroscopy from the Hobby–Eberly Telescope (HET) Dark Energy Experiment (HETDEX) with sources detected by the Low Frequency Array (LOFAR) to construct the HETDEX-LOFAR Spectroscopic Redshift Catalog. Starting from the first data release of the LOFAR Two-metre Sky Survey, including a value-added catalog with photometric redshifts, we extracted 28,705 HETDEX spectra. Using an automatic classifying algorithm, we assigned each object a star, galaxy, or quasar label along with a velocity/redshift, with supplemental classifications coming from the continuum and emission-line catalogs of the internal, fourth data release from HETDEX (HDR4). We measured 9087 new redshifts; in combination with the value-added catalog, our final spectroscopic redshift sample is 9710 sources. This new catalog contains the highest substantial fraction of LOFAR galaxies with spectroscopic redshift information; it improves archival spectroscopic redshifts and facilitates research to determine the [O ii ] emission properties of radio galaxies from 0.0 < z < 0.5, and the Ly α emission characteristics of both radio galaxies and quasars from 1.9 < z < 3.5. Additionally, by combining the unique properties of LOFAR and HETDEX, we are able to measure star formation rates (SFRs) and stellar masses. Using the Visible Integral-field Replicable Unit Spectrograph, we measure the emission lines of [O iii ], [Ne iii ], and [O ii ] and evaluate line-ratio diagnostics to determine whether the emission from these galaxies is dominated by active galactic nuclei or star formation and fit a new SFR– L _150MHz relationship.https://doi.org/10.3847/1538-4357/ad957bRedshift surveysGalaxy evolutionRadio continuum emissionRadio active galactic nuclei |
| spellingShingle | Maya H. Debski Gregory R. Zeimann Gary J. Hill Donald P. Schneider Leah Morabito Gavin Dalton Matt J. Jarvis Erin Mentuch Cooper Robin Ciardullo Eric Gawiser Nika Jurlin HETDEX-LOFAR Spectroscopic Redshift Catalog The Astrophysical Journal Redshift surveys Galaxy evolution Radio continuum emission Radio active galactic nuclei |
| title | HETDEX-LOFAR Spectroscopic Redshift Catalog |
| title_full | HETDEX-LOFAR Spectroscopic Redshift Catalog |
| title_fullStr | HETDEX-LOFAR Spectroscopic Redshift Catalog |
| title_full_unstemmed | HETDEX-LOFAR Spectroscopic Redshift Catalog |
| title_short | HETDEX-LOFAR Spectroscopic Redshift Catalog |
| title_sort | hetdex lofar spectroscopic redshift catalog |
| topic | Redshift surveys Galaxy evolution Radio continuum emission Radio active galactic nuclei |
| url | https://doi.org/10.3847/1538-4357/ad957b |
| work_keys_str_mv | AT mayahdebski hetdexlofarspectroscopicredshiftcatalog AT gregoryrzeimann hetdexlofarspectroscopicredshiftcatalog AT garyjhill hetdexlofarspectroscopicredshiftcatalog AT donaldpschneider hetdexlofarspectroscopicredshiftcatalog AT leahmorabito hetdexlofarspectroscopicredshiftcatalog AT gavindalton hetdexlofarspectroscopicredshiftcatalog AT mattjjarvis hetdexlofarspectroscopicredshiftcatalog AT erinmentuchcooper hetdexlofarspectroscopicredshiftcatalog AT robinciardullo hetdexlofarspectroscopicredshiftcatalog AT ericgawiser hetdexlofarspectroscopicredshiftcatalog AT nikajurlin hetdexlofarspectroscopicredshiftcatalog |