Faint White Dwarf Flux Standards: Data and Models
Fainter standard stars are essential for the calibration of larger telescopes. This work adds to the calibration spectra (CALSPEC) database of 19 faint white dwarfs (WDs) with all-sky coverage and V magnitudes between 16.5 and 18.7. Included for these stars is a new ultraviolet (UV) Hubble Space Tel...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2024-01-01
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| Series: | The Astronomical Journal |
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| Online Access: | https://doi.org/10.3847/1538-3881/ad93d8 |
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| author | Ralph C. Bohlin Susana Deustua Gautham Narayan Abhijit Saha Annalisa Calamida Karl D. Gordon Jay B. Holberg Ivan Hubeny Thomas Matheson Armin Rest |
| author_facet | Ralph C. Bohlin Susana Deustua Gautham Narayan Abhijit Saha Annalisa Calamida Karl D. Gordon Jay B. Holberg Ivan Hubeny Thomas Matheson Armin Rest |
| author_sort | Ralph C. Bohlin |
| collection | DOAJ |
| description | Fainter standard stars are essential for the calibration of larger telescopes. This work adds to the calibration spectra (CALSPEC) database of 19 faint white dwarfs (WDs) with all-sky coverage and V magnitudes between 16.5 and 18.7. Included for these stars is a new ultraviolet (UV) Hubble Space Telescope (HST) Space Telescope Imaging Spectrograph between 1150 and 3000 Å with a resolution of ∼500. Pure hydrogen WD models are fit to these UV spectra and to six-band HST/Wide Field Camera 3 photometry at 0.28–1.6 μ m to construct predicted model spectral energy distributions covering wavelengths from 900 Å to the James Webb Space Telescope limit of 30 μ m using well-established CALSPEC procedures for producing flux standards with the goal of 1% accuracy. |
| format | Article |
| id | doaj-art-b4f5f3787c6d4a0685a7c47461e73f40 |
| institution | OA Journals |
| issn | 1538-3881 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astronomical Journal |
| spelling | doaj-art-b4f5f3787c6d4a0685a7c47461e73f402025-08-20T02:37:05ZengIOP PublishingThe Astronomical Journal1538-38812024-01-0116914010.3847/1538-3881/ad93d8Faint White Dwarf Flux Standards: Data and ModelsRalph C. Bohlin0https://orcid.org/0000-0001-9806-0551Susana Deustua1https://orcid.org/0000-0003-2823-360XGautham Narayan2https://orcid.org/0000-0001-6022-0484Abhijit Saha3https://orcid.org/0000-0002-6839-4881Annalisa Calamida4https://orcid.org/0000-0002-0882-7702Karl D. Gordon5https://orcid.org/0000-0001-5340-6774Jay B. Holberg6https://orcid.org/0000-0003-3082-0774Ivan Hubeny7https://orcid.org/0000-0001-8816-236XThomas Matheson8https://orcid.org/0000-0001-6685-0479Armin Rest9https://orcid.org/0000-0002-4410-5387Space Telescope Science Institute , 3700 San Martin Drive, Baltimore, MD 21218, USASensor Science Division, National Institute of Standards and Technology , Gaithersburg, MD 20899-8441, USAUniversity of Illinois at Urbana-Champaign , 1002 W. Green Street, Urbana, IL 61801, USANSF’s National Optical Infrared Astronomy Research Laboratory , 950 North Cherry Avenue, Tucson, AZ 85719, USASpace Telescope Science Institute , 3700 San Martin Drive, Baltimore, MD 21218, USASpace Telescope Science Institute , 3700 San Martin Drive, Baltimore, MD 21218, USAThe University of Arizona , Lunar and Planetary Laboratory, 1629 East University Boulevard, Tucson, AZ 85721, USAThe University of Arizona , Steward Observatory, 933 North Cherry Avenue, Tucson, AZ 85721, USANSF’s National Optical Infrared Astronomy Research Laboratory , 950 North Cherry Avenue, Tucson, AZ 85719, USASpace Telescope Science Institute , 3700 San Martin Drive, Baltimore, MD 21218, USA; Department of Physics and Astronomy, Johns Hopkins University , Baltimore, MD 21218, USAFainter standard stars are essential for the calibration of larger telescopes. This work adds to the calibration spectra (CALSPEC) database of 19 faint white dwarfs (WDs) with all-sky coverage and V magnitudes between 16.5 and 18.7. Included for these stars is a new ultraviolet (UV) Hubble Space Telescope (HST) Space Telescope Imaging Spectrograph between 1150 and 3000 Å with a resolution of ∼500. Pure hydrogen WD models are fit to these UV spectra and to six-band HST/Wide Field Camera 3 photometry at 0.28–1.6 μ m to construct predicted model spectral energy distributions covering wavelengths from 900 Å to the James Webb Space Telescope limit of 30 μ m using well-established CALSPEC procedures for producing flux standards with the goal of 1% accuracy.https://doi.org/10.3847/1538-3881/ad93d8DA stars |
| spellingShingle | Ralph C. Bohlin Susana Deustua Gautham Narayan Abhijit Saha Annalisa Calamida Karl D. Gordon Jay B. Holberg Ivan Hubeny Thomas Matheson Armin Rest Faint White Dwarf Flux Standards: Data and Models The Astronomical Journal DA stars |
| title | Faint White Dwarf Flux Standards: Data and Models |
| title_full | Faint White Dwarf Flux Standards: Data and Models |
| title_fullStr | Faint White Dwarf Flux Standards: Data and Models |
| title_full_unstemmed | Faint White Dwarf Flux Standards: Data and Models |
| title_short | Faint White Dwarf Flux Standards: Data and Models |
| title_sort | faint white dwarf flux standards data and models |
| topic | DA stars |
| url | https://doi.org/10.3847/1538-3881/ad93d8 |
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