HWO Target Stars and Systems: A Survey of Archival UV and X-ray Data
Fuente:
arXiv
Salvato in:
| Autori principali: | , , , , , , , , , , , , , , , , |
|---|---|
| Natura: | Preprint |
| Pubblicazione: |
2025
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1866916946061033472 |
|---|---|
| author | Peacock, Sarah Wilson, David J. Richey-Yowell, Tyler Tuchow, Noah W. France, Kevin Caballero, José A. Spinelli, Riccardo Corrales, Lía Zelakiewicz, Aiden S. Redfield, Seth Rockcliffe, Keighley Youngblood, Allison Froning, Cynthia S. Duvvuri, Girish M. Binder, Breanna A. Hinkel, Natalie R. Mamajek, Eric E. |
| author_facet | Peacock, Sarah Wilson, David J. Richey-Yowell, Tyler Tuchow, Noah W. France, Kevin Caballero, José A. Spinelli, Riccardo Corrales, Lía Zelakiewicz, Aiden S. Redfield, Seth Rockcliffe, Keighley Youngblood, Allison Froning, Cynthia S. Duvvuri, Girish M. Binder, Breanna A. Hinkel, Natalie R. Mamajek, Eric E. |
| contents | We assess archival high-energy data for key stars on the Habitable Worlds Observatory (HWO) Target Stars and Systems 2025 list, as stellar radiation is critical to shaping and interpreting planetary atmospheres. Using a sample of 98 nearby stars (HWO Tier 1 targets), we compile and evaluate X-ray and ultraviolet (UV) data from archival eROSITA, Chandra, XMM-Newton, ROSAT, EUVE, Swift, FUSE, IUE, GALEX, and HST. We examine spectral and temporal coverage, assess data quality, and identify major gaps. UV data are moderately available, with most coverage coming from near-UV spectra from IUE. Far fewer stars have far-UV spectra, especially from HST. In the X-ray regime, some stars have high-quality spectra, while others are limited to shallow detections or broad-band photometry. A small fraction of the sample has both X-ray and UV spectra of sufficient quality to support full spectral energy distribution modeling. Truly comprehensive coverage across X-ray, extreme-UV, and both UV bands remains extremely rare. Most datasets are single-epoch, limiting assessments of variability and flares - key factors in atmospheric photochemistry and escape. Moreover, the lack of simultaneous or contemporaneous observations across bands adds further uncertainty. Our findings underscore the need for new space-based missions and coordinated multiwavelength campaigns, ideally with overlapping coverage, to improve stellar characterization for HWO. As several key observatories age and face potential decommissioning, there is a narrow window of opportunity to secure these critical data. Investing in this effort now will directly support the science goals of HWO and enhance future studies of planetary habitability. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_08999 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | HWO Target Stars and Systems: A Survey of Archival UV and X-ray Data Peacock, Sarah Wilson, David J. Richey-Yowell, Tyler Tuchow, Noah W. France, Kevin Caballero, José A. Spinelli, Riccardo Corrales, Lía Zelakiewicz, Aiden S. Redfield, Seth Rockcliffe, Keighley Youngblood, Allison Froning, Cynthia S. Duvvuri, Girish M. Binder, Breanna A. Hinkel, Natalie R. Mamajek, Eric E. Solar and Stellar Astrophysics Earth and Planetary Astrophysics Instrumentation and Methods for Astrophysics We assess archival high-energy data for key stars on the Habitable Worlds Observatory (HWO) Target Stars and Systems 2025 list, as stellar radiation is critical to shaping and interpreting planetary atmospheres. Using a sample of 98 nearby stars (HWO Tier 1 targets), we compile and evaluate X-ray and ultraviolet (UV) data from archival eROSITA, Chandra, XMM-Newton, ROSAT, EUVE, Swift, FUSE, IUE, GALEX, and HST. We examine spectral and temporal coverage, assess data quality, and identify major gaps. UV data are moderately available, with most coverage coming from near-UV spectra from IUE. Far fewer stars have far-UV spectra, especially from HST. In the X-ray regime, some stars have high-quality spectra, while others are limited to shallow detections or broad-band photometry. A small fraction of the sample has both X-ray and UV spectra of sufficient quality to support full spectral energy distribution modeling. Truly comprehensive coverage across X-ray, extreme-UV, and both UV bands remains extremely rare. Most datasets are single-epoch, limiting assessments of variability and flares - key factors in atmospheric photochemistry and escape. Moreover, the lack of simultaneous or contemporaneous observations across bands adds further uncertainty. Our findings underscore the need for new space-based missions and coordinated multiwavelength campaigns, ideally with overlapping coverage, to improve stellar characterization for HWO. As several key observatories age and face potential decommissioning, there is a narrow window of opportunity to secure these critical data. Investing in this effort now will directly support the science goals of HWO and enhance future studies of planetary habitability. |
| title | HWO Target Stars and Systems: A Survey of Archival UV and X-ray Data |
| topic | Solar and Stellar Astrophysics Earth and Planetary Astrophysics Instrumentation and Methods for Astrophysics |
| url | https://arxiv.org/abs/2509.08999 |