Résumé
We report on a Chandra grating observation of the recently discovered hard X-ray transient IGR J17497-2821. The observation took place about 2 weeks after the discovery of the source at a flux level of about 20 mcrab in the 0.8-8 keV range. We extracted the most precise X-ray position of IGR J17497-2821, i.e., αJ2000 = 17h49m38.037s, δJ2000 = -28°21′17.37″ (with a 90% uncertainty of 0.6″). We also report on optical and near-infrared photometric follow-up observations based on this position. With the multiwavelength information at hand, we discuss the possible nature of the source, proposing that IGR J17497-2821 is a low-mass X-ray binary, most likely hosting a black hole, with a red giant K-type companion.
| langue originale | Anglais |
|---|---|
| Pages (de - à) | L109-L112 |
| journal | Astrophysical Journal |
| Volume | 657 |
| Numéro de publication | 2 II |
| Les DOIs | |
| état | Publié - 10 mars 2007 |
| Modification externe | Oui |
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