{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,24]],"date-time":"2025-12-24T19:12:06Z","timestamp":1766603526353,"version":"build-2065373602"},"reference-count":70,"publisher":"American Astronomical Society","issue":"1","license":[{"start":{"date-parts":[[2025,10,24]],"date-time":"2025-10-24T00:00:00Z","timestamp":1761264000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2025,10,24]],"date-time":"2025-10-24T00:00:00Z","timestamp":1761264000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/iopscience.iop.org\/info\/page\/text-and-data-mining"}],"content-domain":{"domain":["iopscience.iop.org"],"crossmark-restriction":false},"short-container-title":["ApJ"],"published-print":{"date-parts":[[2025,11,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    Understanding the orbits of giant planets is critical for testing planet formation models, particularly at wide separations (&gt;10 au) where traditional core accretion becomes inefficient. However, constraining orbits at these separations has historically been challenging due to sparse orbital coverage and related degeneracies in the orbital parameters. In this work, we use existing high-resolution (\n                    <jats:italic>R<\/jats:italic>\n                    \u00a0\u223c\u00a0100,000) spectroscopic measurements from CRIRES+, astrometric data from SPHERE, NACO, and Atacama Large Millimeter\/submillimeter Array, and combine it with new high-precision GRAVITY astrometry data to refine the orbit of GQ Lup B, a \u223c30\n                    <jats:italic>M<\/jats:italic>\n                    <jats:sub>J<\/jats:sub>\n                    companion at \u223c100 au, in a system that also hosts a circumstellar disk and a wide companion, GQ Lup C. Including radial velocity (RV) data significantly improves orbital constraints by breaking the degeneracy between inclination and eccentricity that plagues astrometry-only fits for long-period companions. Our work is one of the first to combine high-precision astrometry with the companion\u2019s relative radial velocity measurements to achieve significantly improved orbital constraints. The eccentricity is refined from\n                    <jats:inline-formula>\n                      <jats:tex-math>\n                        \n                      <\/jats:tex-math>\n                      <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" overflow=\"scroll\">\n                        <mml:mi>e<\/mml:mi>\n                        <mml:mo>=<\/mml:mo>\n                        <mml:mn>0.4<\/mml:mn>\n                        <mml:msubsup>\n                          <mml:mrow>\n                            <mml:mn>7<\/mml:mn>\n                          <\/mml:mrow>\n                          <mml:mrow>\n                            <mml:mo>\u2212<\/mml:mo>\n                            <mml:mn>0.16<\/mml:mn>\n                          <\/mml:mrow>\n                          <mml:mrow>\n                            <mml:mo>+<\/mml:mo>\n                            <mml:mn>0.14<\/mml:mn>\n                          <\/mml:mrow>\n                        <\/mml:msubsup>\n                      <\/mml:math>\n                    <\/jats:inline-formula>\n                    (GRAVITY only) to\n                    <jats:inline-formula>\n                      <jats:tex-math>\n                        \n                      <\/jats:tex-math>\n                      <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" overflow=\"scroll\">\n                        <mml:mi>e<\/mml:mi>\n                        <mml:mo>=<\/mml:mo>\n                        <mml:mn>0.3<\/mml:mn>\n                        <mml:msubsup>\n                          <mml:mrow>\n                            <mml:mn>5<\/mml:mn>\n                          <\/mml:mrow>\n                          <mml:mrow>\n                            <mml:mo>\u2212<\/mml:mo>\n                            <mml:mn>0.09<\/mml:mn>\n                          <\/mml:mrow>\n                          <mml:mrow>\n                            <mml:mo>+<\/mml:mo>\n                            <mml:mn>0.10<\/mml:mn>\n                          <\/mml:mrow>\n                        <\/mml:msubsup>\n                      <\/mml:math>\n                    <\/jats:inline-formula>\n                    when RVs and GRAVITY data are combined. We also compute the mutual inclinations between the orbit of GQ Lup B, the circumstellar disk, the stellar spin axis, and the disk of GQ Lup C. The orbit is misaligned by\n                    <jats:inline-formula>\n                      <jats:tex-math>\n                        \n                      <\/jats:tex-math>\n                      <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" overflow=\"scroll\">\n                        <mml:mn>6<\/mml:mn>\n                        <mml:msubsup>\n                          <mml:mrow>\n                            <mml:mn>3<\/mml:mn>\n                          <\/mml:mrow>\n                          <mml:mrow>\n                            <mml:mo>\u2212<\/mml:mo>\n                            <mml:mn>14<\/mml:mn>\n                          <\/mml:mrow>\n                          <mml:mrow>\n                            <mml:mo>+<\/mml:mo>\n                            <mml:mn>6<\/mml:mn>\n                          <\/mml:mrow>\n                        <\/mml:msubsup>\n                      <\/mml:math>\n                    <\/jats:inline-formula>\n                    \u00b0 relative to the circumstellar disk,\n                    <jats:inline-formula>\n                      <jats:tex-math>\n                        \n                      <\/jats:tex-math>\n                      <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" overflow=\"scroll\">\n                        <mml:mn>5<\/mml:mn>\n                        <mml:msubsup>\n                          <mml:mrow>\n                            <mml:mn>2<\/mml:mn>\n                          <\/mml:mrow>\n                          <mml:mrow>\n                            <mml:mo>\u2212<\/mml:mo>\n                            <mml:mn>24<\/mml:mn>\n                          <\/mml:mrow>\n                          <mml:mrow>\n                            <mml:mo>+<\/mml:mo>\n                            <mml:mn>19<\/mml:mn>\n                          <\/mml:mrow>\n                        <\/mml:msubsup>\n                      <\/mml:math>\n                    <\/jats:inline-formula>\n                    \u00b0 with the host star\u2019s spin axis, but appears more consistent (\n                    <jats:inline-formula>\n                      <jats:tex-math>\n                        \n                      <\/jats:tex-math>\n                      <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" overflow=\"scroll\">\n                        <mml:mn>3<\/mml:mn>\n                        <mml:msubsup>\n                          <mml:mrow>\n                            <mml:mn>4<\/mml:mn>\n                          <\/mml:mrow>\n                          <mml:mrow>\n                            <mml:mo>\u2212<\/mml:mo>\n                            <mml:mn>13<\/mml:mn>\n                          <\/mml:mrow>\n                          <mml:mrow>\n                            <mml:mo>+<\/mml:mo>\n                            <mml:mn>6<\/mml:mn>\n                          <\/mml:mrow>\n                        <\/mml:msubsup>\n                      <\/mml:math>\n                    <\/jats:inline-formula>\n                    \u00b0) with the inclination of the wide tertiary companion GQ Lup C\u2019s disk. These results support a formation scenario for GQ Lup B consistent with cloud fragmentation. They highlight the power of combining companion RV constraints with interferometric astrometry to probe the dynamics and formation of wide-orbit substellar companions.\n                  <\/jats:p>","DOI":"10.3847\/1538-4357\/ae0c15","type":"journal-article","created":{"date-parts":[[2025,10,24]],"date-time":"2025-10-24T15:18:09Z","timestamp":1761319089000},"page":"69","update-policy":"https:\/\/doi.org\/10.1088\/crossmark-policy","source":"Crossref","is-referenced-by-count":1,"title":["Constraints on the Orbit of the Young Substellar Companion GQ Lup B from High-resolution Spectroscopy and VLTI\/GRAVITY Astrometry\n                    <sup>*<\/sup>"],"prefix":"10.3847","volume":"993","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5638-4344","authenticated-orcid":true,"given":"Vidya","family":"Venkatesan","sequence":"first","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3199-2888","authenticated-orcid":true,"given":"S.","family":"Blunt","sequence":"additional","affiliation":[]},{"given":"J. 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