Magnitude, color and spectral type of Aql X-1 in quiescence
| dc.creator | Chevalier, C. | |
| dc.creator | Ilovaisky, S. A. | |
| dc.creator | Leisy, P. | |
| dc.creator | Patat, F. | |
| dc.date | 1999-06-16 | |
| dc.date.accessioned | 2026-07-07T02:32:03Z | |
| dc.date.available | 2026-07-07T02:32:03Z | |
| dc.description | Direct I and V-band imaging of Aql X-1 in quiescence and during outburst maximum shows that the true optical counterpart is the interloper located 0.48" West of the previously known star. We find for the new counterpart V = 21.6 and V-I = 2.2 in quiescence, when its contribution to the total light was 12% in V and 22% in I. Analysis of this photometry and of low-resolution spectra of the sum of both stars, also taken during quiescence, shows that the likely spectral types for the previously known star and the optical counterpart are late G and late K, respectively, reddened by E(B-V) = 0.5 $\pm$0.1. | |
| dc.description | 4 pages + 4 figures, uses aa.cls, accepted by A&Ap (Letters). Also available at http://www.obs-hp.fr/www/preprints/pp137/pp137.html | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9906278 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9906278 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/14375 | |
| dc.subject | Astrophysics | |
| dc.title | Magnitude, color and spectral type of Aql X-1 in quiescence | |
| dc.type | text |