HectoMAP: The Complete Redshift Survey (Data Release 2)
HectoMAP is a dense redshift survey of 95,403 galaxies based primarily on MMT spectroscopy with a median redshift z = 0.345. The survey covers 54.64 deg ^2 in a 1.°5 wide strip across the northern sky centered at a decl. of 43.°25. We report the redshift, the spectral indicator D _n 4000, and the st...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | The Astrophysical Journal |
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| Online Access: | https://doi.org/10.3847/1538-4357/acb925 |
| _version_ | 1797697267304497152 |
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| author | Jubee Sohn Margaret J. Geller Ho Seong Hwang Daniel G. Fabricant Yousuke Utsumi Ivana Damjanov |
| author_facet | Jubee Sohn Margaret J. Geller Ho Seong Hwang Daniel G. Fabricant Yousuke Utsumi Ivana Damjanov |
| author_sort | Jubee Sohn |
| collection | DOAJ |
| description | HectoMAP is a dense redshift survey of 95,403 galaxies based primarily on MMT spectroscopy with a median redshift z = 0.345. The survey covers 54.64 deg ^2 in a 1.°5 wide strip across the northern sky centered at a decl. of 43.°25. We report the redshift, the spectral indicator D _n 4000, and the stellar mass. The red-selected survey is 81% complete for 55,962 galaxies with ( g − r ) > 1 and r < 20.5; it is 72% complete for 32,908 galaxies with ( g − r ) > 1, ( r − i ) > 0.5 and 20.5 < r < 21.3. Comparison of the survey basis SDSS photometry with the HSC-SSP photometry demonstrates that HectoMAP provides complete magnitude-limited surveys based on either photometric system. We update the comparison between the HSC-SSP photometric redshifts with HectoMAP spectroscopic redshifts; the comparison demonstrates that the HSC-SSP photometric redshifts have improved between the second and third data releases. HectoMAP is a foundation for examining the quiescent galaxy population (63% of the survey), clusters of galaxies, and the cosmic web. HectoMAP is completely covered by the HSC-SSP survey, thus enabling a variety of strong- and weak-lensing investigations. |
| first_indexed | 2024-03-12T03:37:54Z |
| format | Article |
| id | doaj.art-91559bfcbcbe4458981c98a45b41f432 |
| institution | Directory Open Access Journal |
| issn | 1538-4357 |
| language | English |
| last_indexed | 2024-03-12T03:37:54Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj.art-91559bfcbcbe4458981c98a45b41f4322023-09-03T13:08:01ZengIOP PublishingThe Astrophysical Journal1538-43572023-01-0194529410.3847/1538-4357/acb925HectoMAP: The Complete Redshift Survey (Data Release 2)Jubee Sohn0https://orcid.org/0000-0002-9254-144XMargaret J. Geller1https://orcid.org/0000-0002-9146-4876Ho Seong Hwang2https://orcid.org/0000-0003-3428-7612Daniel G. Fabricant3https://orcid.org/0000-0002-1311-4942Yousuke Utsumi4https://orcid.org/0000-0001-6161-8988Ivana Damjanov5https://orcid.org/0000-0003-4797-5246Astronomy Program, Department of Physics and Astronomy, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea jubee.sohn@snu.ac.kr; Smithsonian Astrophysical Observatory , 60 Garden Street, Cambridge, MA 02138, USASmithsonian Astrophysical Observatory , 60 Garden Street, Cambridge, MA 02138, USAAstronomy Program, Department of Physics and Astronomy, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea jubee.sohn@snu.ac.kr; SNU Astronomy Research Center, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of KoreaSmithsonian Astrophysical Observatory , 60 Garden Street, Cambridge, MA 02138, USASLAC National Accelerator Laboratory , Menlo Park, CA 94025, USA; Kavli Institute for Particle Astrophysics and Cosmology, Stanford University , Stanford, CA 94305, USADepartment of Astronomy and Physics, Saint Mary’s University , 923 Robie Street, Halifax, NS B3H 3C3, CanadaHectoMAP is a dense redshift survey of 95,403 galaxies based primarily on MMT spectroscopy with a median redshift z = 0.345. The survey covers 54.64 deg ^2 in a 1.°5 wide strip across the northern sky centered at a decl. of 43.°25. We report the redshift, the spectral indicator D _n 4000, and the stellar mass. The red-selected survey is 81% complete for 55,962 galaxies with ( g − r ) > 1 and r < 20.5; it is 72% complete for 32,908 galaxies with ( g − r ) > 1, ( r − i ) > 0.5 and 20.5 < r < 21.3. Comparison of the survey basis SDSS photometry with the HSC-SSP photometry demonstrates that HectoMAP provides complete magnitude-limited surveys based on either photometric system. We update the comparison between the HSC-SSP photometric redshifts with HectoMAP spectroscopic redshifts; the comparison demonstrates that the HSC-SSP photometric redshifts have improved between the second and third data releases. HectoMAP is a foundation for examining the quiescent galaxy population (63% of the survey), clusters of galaxies, and the cosmic web. HectoMAP is completely covered by the HSC-SSP survey, thus enabling a variety of strong- and weak-lensing investigations.https://doi.org/10.3847/1538-4357/acb925Redshift surveysLarge-scale structure of the universeGalaxy clusters |
| spellingShingle | Jubee Sohn Margaret J. Geller Ho Seong Hwang Daniel G. Fabricant Yousuke Utsumi Ivana Damjanov HectoMAP: The Complete Redshift Survey (Data Release 2) The Astrophysical Journal Redshift surveys Large-scale structure of the universe Galaxy clusters |
| title | HectoMAP: The Complete Redshift Survey (Data Release 2) |
| title_full | HectoMAP: The Complete Redshift Survey (Data Release 2) |
| title_fullStr | HectoMAP: The Complete Redshift Survey (Data Release 2) |
| title_full_unstemmed | HectoMAP: The Complete Redshift Survey (Data Release 2) |
| title_short | HectoMAP: The Complete Redshift Survey (Data Release 2) |
| title_sort | hectomap the complete redshift survey data release 2 |
| topic | Redshift surveys Large-scale structure of the universe Galaxy clusters |
| url | https://doi.org/10.3847/1538-4357/acb925 |
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