"When I first looked at the data, I thought something had gone wrong with the observation because it wasn't what I was expecting. "We found out that the shadow had done something completely different," said Debes, who is principal investigator and lead author of the study published in The Astrophysical Journal. John Debes of AURA/STScI for the European Space Agency at the Space Telescope Science Institute in Baltimore, Maryland, compared the TW Hydrae disk to Hubble observations made several years ago. The second shadow was discovered in observations obtained June 6, 2021, as part of a multi-year program designed to track the shadows in circumstellar disks.
Because the TW Hydrae system is tilted nearly face-on to our view from Earth, it is an optimum target for getting a bull's-eye-view of a planetary construction yard. In its infancy, our solar system may have resembled the TW Hydrae system, some 4.6 billion years ago. TW Hydrae is less than 10 million years old and resides about 200 light-years away. He studied ways a forming planet in the disk could potentially play a role in the formation of the disk structures and the shadows they case. George Mason University Physics and Astronomy Professor, Peter Plavchan, collaborated with the team making the observations. The two disks are likely evidence of a pair of planets under construction. This could be from yet another disk nestled inside the system. Now, a second shadow – playing a game of peek-a-boo – has emerged in just a few years between observations stored in the Hubble's MAST archive. One explanation is that an unseen planet's gravity is pulling dust and gas into the planet's inclined orbit. The shadow isn't from a planet, but from an inner disk slightly inclined relative to the much larger outer disk – causing it to cast a shadow. In 2017 astronomers reported discovering a shadow sweeping across the face of a vast pancake-shaped gas-and-dust disk surrounding the red dwarf star. Their crankies, taken together, present an arc of songs that are sometimes funny, sometimes quite moving, and often evoke metaphorical worlds and journeys, complementing folk songs of several countries.Scientists' Hubble Space Telescope observations of the young star, TW Hydrae may signal new planets under construction. Sandglass has been presenting a mini-festival of crankies in southern Vermont for the past nine years, developing the mystique and low-tech charm of pairing song and story with rolling pictures. Inspired by crankie artists as diverse as Anna and Elizabeth and Bread and Puppet Theater, Eric and Ines have their own original take on this art form, blending Ines’ engaging artwork and expertise in puppetry with Eric’s guitar and banjo arrangements and perspective as a theater director. Together, Eric and Ines have created an array of crankies that range from a humorous Quebecois song to an enigmatic Yiddish lullaby, from a 1930s novelty song to an imagistic journey of refugees set to a guitar instrumental. Sandglass Theater, from Putney, VT, is primarily a puppet theater its founders, Eric Bass and Ines Zeller Bass, came to crankies as an extension of their puppet art. Website: Instagram: Sandglass Theater’s Ines Zeller Bass and Eric Bass Pugnetti’s crankie theater art is featured in National Poetry Prize winner GennaRose Nethercott’s production The Lumberjack’s Dove and is currently on tour with Nethercott’s production Thistlefoot. She is an alum of The Sandglass Theater Puppetry Intensive and has studied shadow puppetry with Stephen Kaplan of Chinese Theatre Works. She co-founded a women’s theater collective called Firekeeper Productions, which produced The Mabel Story, a multimedia dance acrobatic musical production. Pugnetti works as a technical director and freelance lighting, sound, and projection designer for theater companies in and around Southern Vermont. In addition to shadow puppetry, her creative repertoire includes painting, fiber arts, video, sound, and lighting design. She holds a bachelor’s degree in fine arts from the University of California, Santa Cruz. Maria Pugnetti, who often performs under the moniker Wooly Mar, is an interdisciplinary artist with a passion for shadow theater and puppetry.
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