No Evidence of Intrinsic Linear Polarization in Nova Vel 2025 (V572 Vel)

Abstract We report on polarimetric observations of V572 Vel (Nova Vel 2025) conducted on 2025 June 26th and July 21st, shortly after its nova eruption was discovered. Our measurements in the I C band revealed an average linear polarization of 1.60% ± 0.03% at position angle (PA) of 132 <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mover accent="true"> <mml:mrow> <mml:mi>.</mml:mi> </mml:mrow> <mml:mrow> <mml:mi>°</mml:mi> </mml:mrow> </mml:mover> </mml:math> 2. To distinguish between intrinsic and interstellar polarization, we also measured 86 field stars in the nova’s vicinity, finding an average polarization of 1.25% ± 0.61% at a nearly identical PA of 132°. The strong consistency between the nova’s polarization and that of the surrounding field stars suggests that the observed polarization is predominantly interstellar in origin. We found no significant evidence of an intrinsic polarization component, which would typically arise from an asymmetric distribution of ejected material. Further multiband observations are recommended to confirm these findings.