U X O R I O B J E C T S F R O M A N I N T E R F E R O M E T R I C P E R S P E C T I V E time 10 12 14 V A L E X A N D E R K R E P L I N , 3 0 . 0 9 . 2 0 1 9 „ T H E U X O R I T Y P E S TA R S A N D R E L AT E D T O P I C S “ , S T. P E T E R S B U R G
U X O R I O B J E C T S O U T L I N E • I N T R O D U C T I O N ‣ S TA R F O R M AT I O N A N D T H E U X O R I P H E N O M E N O N ‣ I N T E R F E R O M E T RY • O B S E R VAT I O N S ‣ T H E U X O R I T Y P E S TA R K K O P H ‣ T H E P R O T O T Y P E U X O R I ‣ V 1 0 2 6 S C O A N D C O O R I • S U M M A RY A N D F U T U R E W O R K ‣ A L M A + O P T I C A L I N T E R F E R O M E T RY A L E X A N D E R K R E P L I N , „ T H E U X O R I T Y P E S TA R S A N D R E L AT E D T O P I C S “ , 3 0 . 0 9 . 2 0 1 9 , S T. P E T E R S B U R G
U X O R I O B J E C T S O U T L I N E • I N T R O D U C T I O N ‣ S TA R F O R M AT I O N A N D T H E U X O R I P H E N O M E N O N ‣ I N T E R F E R O M E T RY • O B S E R VAT I O N S ‣ T H E U X O R I T Y P E S TA R K K O P H ‣ T H E P R O T O T Y P E U X O R I ‣ V 1 0 2 6 S C O A N D C O O R I • S U M M A RY A N D F U T U R E W O R K ‣ A L M A + O P T I C A L I N T E R F E R O M E T RY A L E X A N D E R K R E P L I N , „ T H E U X O R I T Y P E S TA R S A N D R E L AT E D T O P I C S “ , 3 0 . 0 9 . 2 0 1 9 , S T. P E T E R S B U R G
I N T R O D U C T I O N S TA R F O R M AT I O N Spectral Energy distribution (SED) evolutionary molecular cloud sequence 0.03 Myr Class 0 gravitational collapse 0.2 Myr Class I disk formation 1.0 Myr Class II adapted from: Astronomy, Pearson 10 Myr Class III adapted from: Dauphas & Chaussidon 2011 A L E X A N D E R K R E P L I N , „ T H E U X O R I T Y P E S TA R S A N D R E L AT E D T O P I C S “ , 3 0 . 0 9 . 2 0 1 9 , S T. P E T E R S B U R G
I N T R O D U C T I O N U X O R I P H E N O M E N O N Irregular brightness variations from 2-3 magnitudes in the visual band. Observed light gets bluer in the deep minima, and the fraction of polarized light increases. G R I N I N E T A L . 1 9 9 8 , A S T L , 2 4 , 8 0 2 Interpretation dust clouds Observer central star inner gas disk inner rim circumstellar dust and gas disk Dust orbiting in the disk or disk atmosphere can pass through the line of sight and obscure the central star. High angular resolution is required to observe the innermost scales of circumstellar disks. Even for the closest star forming regions (~140pc away) this becomes a challenge (1AU ~ 7mas). A L E X A N D E R K R E P L I N , „ T H E U X O R I T Y P E S TA R S A N D R E L AT E D T O P I C S “ , 3 0 . 0 9 . 2 0 1 9 , S T. P E T E R S B U R G
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C4XichVFNTxRBEH2MKB9+rZpw4TJxY+Jp0zOK6I0gEi4kmLhAwhLS09u7dHa+0jNLgsv+AG+GKzev8If0t3jwdTtr4oHQk56qfvXqdV XUqamqoX4ORfcm7/ YGFxafnho8dPnraePd+virFVuquKtLCHiax0anLdrU2d6sPSapklqT5IRh9d/OBM28oU+Zf6vNTHmRzmZmCUrAmdtFZ6lcnC3sBKNemlzOvL6WRretJqi85aLK 1K QTvRMfYufEb2Ihwqgj/GqjWXtF6xd6 KOAwhgZNHLU9FNIVPyOE GgJHaMCTFLz/i4xhTLzB2TpcmQREf8D3k6atCcZ6dZ+WzFW1Juy8wQr7i3vWJCtrtV069of3N/9djw1hsmXtlVeE6bUH JK+4Sr3FKxl2ZWcOc1XJ3pu qxgDvfTeG9ZUecX2qfzpbjFhiIx8J8ckzh9RI/PmML5DTdlmBe+WZQug7 tNKb7VXyRtFST1L616f9XDMs1mGtzv7cScSnejz2/bGZjPwRaziJV5zquvYwA72WIfCBX7gGjeBCr4F34PLv9Rgrsl5gf9WcPUHOdiYcw= </latexit> <latexit sha1_base64="XW4zgoI3WoXR0LrY yVb23Ty9b0=">A <latexit sha1_base64="XW4zgoI3WoXR0LrY yVb23Ty9b0=">A C4XichVFNTxRBEH2MKB9+rZpw4TJxY+Jp0zOK6I0gEi4kmLhAwhLS09u7dHa+0jNLgsv+AG+GKzev8If0t3jwdTtr4oHQk56qfvXqdV XUqamqoX4ORfcm7/ YGFxafnho8dPnraePd+virFVuquKtLCHiax0anLdrU2d6sPSapklqT5IRh9d/OBM28oU+Zf6vNTHmRzmZmCUrAmdtFZ6lcnC3sBKNemlzOvL6WRretJqi85aLK 1K QTvRMfYufEb2Ihwqgj/GqjWXtF6xd6 KOAwhgZNHLU9FNIVPyOE GgJHaMCTFLz/i4xhTLzB2TpcmQREf8D3k6atCcZ6dZ+WzFW1Juy8wQr7i3vWJCtrtV069of3N/9djw1hsmXtlVeE6bUH JK+4Sr3FKxl2ZWcOc1XJ3pu qxgDvfTeG9ZUecX2qfzpbjFhiIx8J8ckzh9RI/PmML5DTdlmBe+WZQug7 tNKb7VXyRtFST1L616f9XDMs1mGtzv7cScSnejz2/bGZjPwRaziJV5zquvYwA72WIfCBX7gGjeBCr4F34PLv9Rgrsl5gf9WcPUHOdiYcw= </latexit> <latexit sha1_base64="XW4zgoI3WoXR0LrY yVb23Ty9b0=">A C4XichVFNTxRBEH2MKB9+rZpw4TJxY+Jp0zOK6I0gEi4kmLhAwhLS09u7dHa+0jNLgsv+AG+GKzev8If0t3jwdTtr4oHQk56qfvXqdV XUqamqoX4ORfcm7/ YGFxafnho8dPnraePd+virFVuquKtLCHiax0anLdrU2d6sPSapklqT5IRh9d/OBM28oU+Zf6vNTHmRzmZmCUrAmdtFZ6lcnC3sBKNemlzOvL6WRretJqi85aLK 1K QTvRMfYufEb2Ihwqgj/GqjWXtF6xd6 KOAwhgZNHLU9FNIVPyOE GgJHaMCTFLz/i4xhTLzB2TpcmQREf8D3k6atCcZ6dZ+WzFW1Juy8wQr7i3vWJCtrtV069of3N/9djw1hsmXtlVeE6bUH JK+4Sr3FKxl2ZWcOc1XJ3pu qxgDvfTeG9ZUecX2qfzpbjFhiIx8J8ckzh9RI/PmML5DTdlmBe+WZQug7 tNKb7VXyRtFST1L616f9XDMs1mGtzv7cScSnejz2/bGZjPwRaziJV5zquvYwA72WIfCBX7gGjeBCr4F34PLv9Rgrsl5gf9WcPUHOdiYcw= </latexit> <latexit sha1_base64="XW4zgoI3WoXR0LrY yVb23Ty9b0=">A C4XichVFNTxRBEH2MKB9+rZpw4TJxY+Jp0zOK6I0gEi4kmLhAwhLS09u7dHa+0jNLgsv+AG+GKzev8If0t3jwdTtr4oHQk56qfvXqdV XUqamqoX4ORfcm7/ YGFxafnho8dPnraePd+virFVuquKtLCHiax0anLdrU2d6sPSapklqT5IRh9d/OBM28oU+Zf6vNTHmRzmZmCUrAmdtFZ6lcnC3sBKNemlzOvL6WRretJqi85aLK 1K QTvRMfYufEb2Ihwqgj/GqjWXtF6xd6 KOAwhgZNHLU9FNIVPyOE GgJHaMCTFLz/i4xhTLzB2TpcmQREf8D3k6atCcZ6dZ+WzFW1Juy8wQr7i3vWJCtrtV069of3N/9djw1hsmXtlVeE6bUH JK+4Sr3FKxl2ZWcOc1XJ3pu qxgDvfTeG9ZUecX2qfzpbjFhiIx8J8ckzh9RI/PmML5DTdlmBe+WZQug7 tNKb7VXyRtFST1L616f9XDMs1mGtzv7cScSnejz2/bGZjPwRaziJV5zquvYwA72WIfCBX7gGjeBCr4F34PLv9Rgrsl5gf9WcPUHOdiYcw= </latexit> I N T R O D U C T I O N I N T E R F E R O M E T RY Angular resolution ∼ λ What happens during an observation of a scientific target (e.g., a binary)? D Single telescope image domain larger diameter D measured quantity: image A L E X A N D E R K R E P L I N , „ T H E U X O R I T Y P E S TA R S A N D R E L AT E D T O P I C S “ , 3 0 . 0 9 . 2 0 1 9 , S T. P E T E R S B U R G
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