Unusual Outbursting State of a Z Cam-Type Star HL CMa
| dc.creator | Kato, T. | |
| dc.date | 2002-03-20 | |
| dc.date.accessioned | 2026-07-07T02:03:12Z | |
| dc.date.available | 2026-07-07T02:03:12Z | |
| dc.description | HL CMa is a Z Cam-type dwarf nova which was discovered as an Einstein X-ray source. In addition to normal outbursts and standstills, we noticed the presence of "the third" outbursting state. During this period, the star showed weak outbursts with a long outburst cycle length. We propose that this phenomenon is caused by a heating on the accretion disk. The presence of strong P Cyg feature in the ultraviolet and the unusual presence of high-excitation optical lines could be interpreted as an emerging signature of strong irradiation field. Since the object is still in this unusual state in 2002 March, we encourage X-ray and spectroscopic observations to detect further signatures of high-energy photons and irradiation. | |
| dc.description | 4 pages, 3 figures | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0203323 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0203323 | |
| dc.identifier | Inf. Bull. Var Stars 5243 (2002) | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/4302 | |
| dc.subject | Astrophysics | |
| dc.title | Unusual Outbursting State of a Z Cam-Type Star HL CMa | |
| dc.type | text |