Academic Journal
Early Ultraviolet, Optical and X-Ray Observations of the Type IIP SN 2005cs in M51 with Swift
| العنوان: | Early Ultraviolet, Optical and X-Ray Observations of the Type IIP SN 2005cs in M51 with Swift |
|---|---|
| المؤلفون: | Peter J. Brown, Luc Dessart, Stephen T. Holl, Stefan Immler, Stéphane Blondin, Er J. Blustin, Alice Breeveld, Gulab C. Dewangan, Neil Gehrels, Robert B. Hutchins, Robert P. Kirshner, O. Mason, Paolo A. Mazzali, Peter Milne, Maryam Modjaz, Peter W. A. Roming |
| المساهمون: | The Pennsylvania State University CiteSeerX Archives |
| المصدر: | http://arxiv.org/pdf/astro-ph/0612541v1.pdf. |
| سنة النشر: | 2006 |
| المجموعة: | CiteSeerX |
| الوصف: | We report early photospheric-phase observations of the Type IIP Supernova (SN) 2005cs obtained by Swift’s Ultraviolet-Optical and X-Ray Telescopes. Observations started within two days of discovery and continued on a regular basis for three weeks. During this time the V-band magnitude remained essentially constant, while the UV was initially bright but steadily faded until below the brightness of an underlying UV-bright Hii region. This UV decay is similar to SNe II observed by the International Ultraviolet Explorer. UV grism spectra show the P-Cygni absorption of Mgii 2798˚A, indicating a photospheric origin of the UV flux. Based on non-LTE model atmosphere calculations with the CMFGEN code, we associate the rapid evolution of the UV flux with the cooling of the ejecta, the peak of the spectral energy distribution (SED) shifting from ∼700˚A on June 30th to ∼1200˚A on July 5th. Furthermore, the corresponding recombination of the ejecta, e.g., the transition from Feiii to Feii, induces a considerable strengthening of metal line-blanketing at and above the photosphere, blocking more and more effectively this fading UV flux. SN 2005cs was not detected in the X-rays, and the upper limit to the X-ray luminosity yields a limit to the mass loss rate of the progenitor of ˙ M < |
| نوع الوثيقة: | text |
| وصف الملف: | application/pdf |
| اللغة: | English |
| Relation: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.336.3480; http://arxiv.org/pdf/astro-ph/0612541v1.pdf |
| الاتاحة: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.336.3480 http://arxiv.org/pdf/astro-ph/0612541v1.pdf |
| Rights: | Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
| رقم الانضمام: | edsbas.1B1F9BBF |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |