
Physics and Astronomy Faculty Publications and Presentations
Document Type
Article
Publication Date
12-2024
Abstract
We studied the spectral energy distribution of 22 known AM CVns with orbital periods (Porb) larger than 35 minutes using multiwavelength public photometric data to estimate the effective temperature of the accreting white dwarf. We find an infrared (IR) excess in all systems when compared to a single blackbody, both when the disk should be extended and when it should be truncated by the accretor's magnetic field. This suggests a dominant contribution from the donor to the IR flux. When fitting two blackbodies, the temperature of the hot component decreases with Porb, as expected by evolutionary models. Temperatures for systems with 35 < Porb < 45 minutes are consistent with models. Systems with Porb ≳ 45 minutes have higher temperatures than expected. The second blackbody temperature does not correlate with Porb.
Recommended Citation
Macrie, Colin W., Liliana Rivera Sandoval, Yuri Cavecchi, Tin Long Sunny Wong, and Manuel Pichardo Marcano. "The Temperature versus Orbital Period Relation of AM CVns: Insights from Their Donors." Research Notes of the AAS 8, no. 12 (2024): 299. http://doi.org/10.3847/2515-5172/ad9a64
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
Publication Title
Research Notes of the AAS
DOI
10.3847/2515-5172/ad9a64
Comments
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