AB Aurigae and Vdb31

AB Aurigae and Vdb31

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With the New Year, I have chosen to visit a new star. AB Aurigae is a protostar still in the process of accretion from surrounding stellar material while ejecting it as well and forming new planets. It resides in the outer disk or anticenter of the Milky Way which extends towards the constellation Auriga. It is opposite in the sky from the dense star-filled central core of the Milky Way in Sagittarius. According to a 2014 Cornell University Library Stellar Astrophysics study, AB Aurigae is “a Herbig Ae star with a transitional disk. Transitional disks present substantial dust clearing in their inner regions, most probably because of the formation of one or more planets. In transitional objects, accretion is found to be about an order of magnitude smaller than in classical full disks. Since accretion is believed to be correlated with outflow activity, centimeter free-free jets are expected to be present in association with these systems, at weaker levels than in classical protoplanetary (full) systems.”

Vdb31 is the dusty dark nebula coexisting with the bright emission nebula created by AB Aurigae.

Date Imaged       :

December 24, 2016

Lens       :

N8 f4.6

Camera       :

QSI 683

Exposure       :

11 hours

Filter       :

LRGB 30:12:12:12 x 10 minutes

Mount       :

Losmandy G11

Location       :

Stardust Observatory, Baguio