تقرير
The Galactic Center with Roman
| العنوان: | The Galactic Center with Roman |
|---|---|
| المؤلفون: | Terry, Sean K., Hosek Jr., Matthew W., Lu, Jessica R., Lam, Casey, Abrams, Natasha, Bahramian, Arash, Barry, Richard, Beaulieu, Jean-Phillipe, Bhattacharya, Aparna, Chu, Devin, Ciurlo, Anna, Clarkson, Will, Do, Tuan, El-Badry, Kareem, Felton, Ryan, Freeman, Matthew, Gautam, Abhimat, Ghez, Andrea, Huber, Daniel, Hunt, Jason, Huston, Macy, Jayasinghe, Tharindu, Koshimoto, Naoki, Lucey, Madeline, Peißker, Florian, Pusack, Anna, Ranc, Clément, Rowan, Dominick, Sanderson, Robyn, Schödel, Rainer, Spencer, Richard G., Street, Rachel, Suzuki, Daisuke, Vandorou, Aikaterini |
| سنة النشر: | 2023 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Earth and Planetary Astrophysics, Astrophysics - Astrophysics of Galaxies, Astrophysics - Solar and Stellar Astrophysics |
| الوصف: | We advocate for a Galactic center (GC) field to be added to the Galactic Bulge Time Domain Survey (GBTDS). The new field would yield high-cadence photometric and astrometric measurements of an unprecedented ${\sim}$3.3 million stars toward the GC. This would enable a wide range of science cases, such as finding star-compact object binaries that may ultimately merge as LISA-detectable gravitational wave sources, constraining the mass function of stars and compact objects in different environments, detecting populations of microlensing and transiting exoplanets, studying stellar flares and variability in young and old stars, and monitoring accretion onto the central supermassive black hole. In addition, high-precision proper motions and parallaxes would open a new window into the large-scale dynamics of stellar populations at the GC, yielding insights into the formation and evolution of galactic nuclei and their co-evolution with the growth of the supermassive black hole. We discuss the possible trade-offs between the notional GBTDS and the addition of a GC field with either an optimal or minimal cadence. Ultimately, the addition of a GC field to the GBTDS would dramatically increase the science return of Roman and provide a legacy dataset to study the mid-plane and innermost regions of our Galaxy. Comment: 19 pages, 3 figures. Submitted to the NASA Roman Core Community Surveys White Paper Call |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2306.12485 |
| رقم الأكسشن: | edsarx.2306.12485 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |