Search

Your search keyword '"Choquet, E [0000-0002-9173-0740]"' showing total 3 results
Start Over Author "Choquet, E [0000-0002-9173-0740]"
3 results on '"Choquet, E [0000-0002-9173-0740]"'

1. The JWST Early-release Science Program for Direct Observations of Exoplanetary Systems II: A 1 to 20 μm Spectrum of the Planetary-mass Companion VHS 1256-1257 b

Author

Miles, BE, Biller, BA, Patapis, P, Worthen, K, Rickman, E, Hoch, KKW, Skemer, A, Perrin, MD, Whiteford, N, Chen, CH, Sargent, B, Mukherjee, S, Morley, CV, Moran, SE, Bonnefoy, M, Petrus, S, Carter, AL, Choquet, E, Hinkley, S, Ward-Duong, K, Leisenring, JM, Millar-Blanchaer, MA, Pueyo, L, Ray, S, Sallum, S, Stapelfeldt, KR, Stone, JM, Wang, JJ, Absil, O, Balmer, WO, Boccaletti, A, Bonavita, M, Booth, M, Bowler, BP, Chauvin, G, Christiaens, V, Currie, T, Danielski, C, Fortney, JJ, Girard, JH, Grady, CA, Greenbaum, AZ, Henning, T, Hines, DC, Janson, M, Kalas, P, Kammerer, J, Kennedy, GM, Kenworthy, MA, Kervella, P, Lagage, PO, Lew, BWP, Liu, MC, Macintosh, B, Marino, S, Marley, MS, Marois, C, Matthews, EC, Matthews, BC, Mawet, D, McElwain, MW, Metchev, S, Meyer, MR, Molliere, P, Pantin, E, Quirrenbach, A, Rebollido, I, Ren, BB, Schneider, G, Vasist, M, Wyatt, MC, Zhou, Y, Briesemeister, ZW, Bryan, ML, Calissendorff, P, Cantalloube, F, Cugno, G, De Furio, M, Dupuy, TJ, Factor, SM, Faherty, JK, Fitzgerald, MP, Franson, K, Gonzales, EC, Hood, CE, Howe, AR, Kraus, AL, Kuzuhara, M, Lagrange, AM, Lawson, K, Lazzoni, C, Liu, P, Llop-Sayson, J, Lloyd, JP, Martinez, RA, Mazoyer, J, Quanz, SP, Redai, JA, Samland, M, Schlieder, JE, Miles, BE [0000-0002-5500-4602], Biller, BA [0000-0003-4614-7035], Patapis, P [0000-0001-8718-3732], Worthen, K [0000-0002-5885-5779], Rickman, E [0000-0003-4203-9715], Hoch, KKW [0000-0002-9803-8255], Skemer, A [0000-0001-6098-3924], Perrin, MD [0000-0002-3191-8151], Whiteford, N [0000-0001-8818-1544], Chen, CH [0000-0002-8382-0447], Sargent, B [0000-0001-9855-8261], Mukherjee, S [0000-0003-1622-1302], Morley, CV [0000-0002-4404-0456], Moran, SE [0000-0002-6721-3284], Bonnefoy, M [0000-0001-5579-5339], Petrus, S [0000-0003-0331-3654], Carter, AL [0000-0001-5365-4815], Choquet, E [0000-0002-9173-0740], Hinkley, S [0000-0001-8074-2562], Ward-Duong, K [0000-0002-4479-8291], Leisenring, JM [0000-0002-0834-6140], Millar-Blanchaer, MA [0000-0001-6205-9233], Ray, S [0000-0003-2259-3911], Sallum, S [0000-0001-6871-6775], Stapelfeldt, KR [0000-0002-2805-7338], Stone, JM [0000-0003-0454-3718], Wang, JJ [0000-0003-0774-6502], Absil, O [0000-0002-4006-6237], Balmer, WO [0000-0001-6396-8439], Boccaletti, A [0000-0001-9353-2724], Bonavita, M [0000-0002-7520-8389], Booth, M [0000-0001-8568-6336], Bowler, BP [0000-0003-2649-2288], Chauvin, G [0000-0003-4022-8598], Christiaens, V [0000-0002-0101-8814], Currie, T [0000-0002-7405-3119], Danielski, C [0000-0002-3729-2663], Fortney, JJ [0000-0002-9843-4354], Girard, JH [0000-0001-8627-0404], Greenbaum, AZ [0000-0002-7162-8036], Henning, T [0000-0002-1493-300X], Hines, DC [0000-0003-4653-6161], Janson, M [0000-0001-8345-593X], Kalas, P [0000-0002-6221-5360], Kammerer, J [0000-0003-2769-0438], Kennedy, GM [0000-0001-6831-7547], Kenworthy, MA [0000-0002-7064-8270], Kervella, P [0000-0003-0626-1749], Lew, BWP [0000-0003-1487-6452], Liu, MC [0000-0003-2232-7664], Macintosh, B [0000-0003-1212-7538], Marino, S [0000-0002-5352-2924], Marley, MS [0000-0002-5251-2943], Marois, C [0000-0002-4164-4182], Matthews, EC [0000-0003-0593-1560], Matthews, BC [0000-0003-3017-9577], Mawet, D [0000-0002-8895-4735], McElwain, MW [0000-0003-0241-8956], Metchev, S [0000-0003-3050-8203], Meyer, MR [0000-0003-1227-3084], Molliere, P [0000-0003-4096-7067], Pantin, E [0000-0001-6472-2844], Rebollido, I [0000-0002-4388-6417], Ren, BB [0000-0003-1698-9696], Schneider, G [0000-0002-4511-5966], Vasist, M [0000-0002-4511-3602], Wyatt, MC [0000-0001-9064-5598], Zhou, Y [0000-0003-2969-6040], Briesemeister, ZW [0000-0002-1764-2494], Bryan, ML [0000-0002-6076-5967], Calissendorff, P [0000-0002-5335-0616], Cantalloube, F [0000-0002-3968-3780], Cugno, G [0000-0001-7255-3251], De Furio, M [0000-0003-1863-4960], Dupuy, TJ [0000-0001-9823-1445], Factor, SM [0000-0002-8332-8516], Faherty, JK [0000-0001-6251-0573], Fitzgerald, MP [0000-0002-0176-8973], Franson, K [0000-0003-4557-414X], Gonzales, EC [0000-0003-4636-6676], Hood, CE [0000-0003-1150-7889], Howe, AR [0000-0002-4884-7150], Kraus, AL [0000-0001-9811-568X], Kuzuhara, M [0000-0002-4677-9182], Lawson, K [0000-0002-6964-8732], Lazzoni, C [0000-0001-7819-9003], Liu, P [0000-0001-7047-0874], Llop-Sayson, J [0000-0002-3414-784X], Martinez, RA [0000-0001-6301-896X], Mazoyer, J [0000-0002-9133-3091], Quanz, SP [0000-0003-3829-7412], Redai, JA [0000-0002-4489-3168], Samland, M [0000-0001-9992-4067], Schlieder, JE [0000-0001-5347-7062], and Apollo - University of Cambridge Repository

Subjects
The Solar System, Exoplanets, and Astrobiology, 5109 Space Sciences, 51 Physical Sciences
Abstract

We present the highest fidelity spectrum to date of a planetary-mass object. VHS 1256 b is a M Jup widely separated (∼8″, a = 150 au), young, planetary-mass companion that shares photometric colors and spectroscopic features with the directly imaged exoplanets HR 8799c, d, and e. As an L-to-T transition object, VHS 1256 b exists along the region of the color–magnitude diagram where substellar atmospheres transition from cloudy to clear. We observed VHS 1256 b with JWST's NIRSpec IFU and MIRI MRS modes for coverage from 1 to 20 μm at resolutions of ∼1000–3700. Water, methane, carbon monoxide, carbon dioxide, sodium, and potassium are observed in several portions of the JWST spectrum based on comparisons from template brown dwarf spectra, molecular opacities, and atmospheric models. The spectral shape of VHS 1256 b is influenced by disequilibrium chemistry and clouds. We directly detect silicate clouds, the first such detection reported for a planetary-mass companion.

Published
2023

2. Constraining the nature of the PDS 70 protoplanets with VLTI/GRAVITY

Author

Wang, JJ, Vigan, A, Lacour, S, Nowak, M, Stolker, T, De Rosa, RJ, Ginzburg, S, Gao, P, Abuter, R, Amorim, A, Asensio-Torres, R, Bauböck, M, Benisty, M, Berger, JP, Beust, H, Beuzit, JL, Blunt, S, Boccaletti, A, Bohn, A, Bonnefoy, M, Bonnet, H, Brandner, W, Cantalloube, F, Caselli, P, Charnay, B, Chauvin, G, Choquet, E, Christiaens, V, Clénet, Y, Coudé Du Foresto, V, Cridland, A, De Zeeuw, PT, Dembet, R, Dexter, J, Drescher, A, Duvert, G, Eckart, A, Eisenhauer, F, Facchini, S, Gao, F, Garcia, P, Garcia Lopez, R, Gardner, T, Gendron, E, Genzel, R, Gillessen, S, Girard, J, Haubois, X, Heißel, G, Henning, T, Hinkley, S, Hippler, S, Horrobin, M, Houllé, M, Hubert, Z, Jiménez-Rosales, A, Jocou, L, Kammerer, J, Keppler, M, Kervella, P, Meyer, M, Kreidberg, L, Lagrange, AM, Lapeyrère, V, Le Bouquin, JB, Léna, P, Lutz, D, Maire, AL, Ménard, F, Mérand, A, Mollière, P, Monnier, JD, Mouillet, D, Müller, A, Nasedkin, E, Ott, T, Otten, GPPL, Paladini, C, Paumard, T, Perraut, K, Perrin, G, Pfuhl, O, Pueyo, L, Rameau, J, Rodet, L, Rodríguez-Coira, G, Rousset, G, Scheithauer, S, Shangguan, J, Shimizu, T, Stadler, J, Straub, O, Straubmeier, C, Sturm, E, Tacconi, LJ, Van Dishoeck, EF, Vincent, F, Von Fellenberg, SD, Ward-Duong, K, Widmann, F, Wang, JJ [0000-0003-0774-6502], Vigan, A [0000-0002-5902-7828], Lacour, S [0000-0002-6948-0263], Stolker, T [0000-0002-5823-3072], De Rosa, RJ [0000-0002-4918-0247], Gao, P [0000-0002-8518-9601], Asensio-Torres, R [0000-0003-2990-0726], Benisty, M [0000-0002-7695-7605], Beuzit, JL [0000-0002-7391-479X], Blunt, S [0000-0002-3199-2888], Bohn, A [0000-0003-1401-9952], Bonnefoy, M [0000-0001-5579-5339], Brandner, W [0000-0003-1939-6351], Caselli, P [0000-0003-1481-7911], Charnay, B [0000-0003-0977-6545], Choquet, E [0000-0002-9173-0740], Christiaens, V [0000-0002-0101-8814], Clénet, Y [0000-0002-8382-2020], De Zeeuw, PT [0000-0003-4175-3474], Dexter, J [0000-0003-3903-0373], Eckart, A [0000-0001-6049-3132], Facchini, S [0000-0003-4689-2684], Gao, F [0000-0002-2581-9114], Garcia Lopez, R [0000-0002-2144-0991], Gardner, T [0000-0002-3003-3183], Genzel, R [0000-0002-2767-9653], Gillessen, S [0000-0002-5708-0481], Girard, J [0000-0001-8627-0404], Henning, T [0000-0002-1493-300X], Hinkley, S [0000-0001-8074-2562], Hippler, S [0000-0002-3912-6108], Horrobin, M [0000-0001-5451-7847], Kervella, P [0000-0003-0626-1749], Meyer, M [0000-0003-1227-3084], Kreidberg, L [0000-0003-0514-1147], Le Bouquin, JB [0000-0002-0493-4674], Lutz, D [0000-0003-0291-9582], Maire, AL [0000-0002-2591-4138], Mérand, A [0000-0002-1637-7393], Monnier, JD [0000-0002-3380-3307], Ott, T [0000-0003-1572-0396], Paumard, T [0000-0003-0655-0452], Perrin, G [0000-0003-0680-0167], Rameau, J [0000-0003-0029-0258], Rodríguez-Coira, G [0000-0002-4177-6433], Shangguan, J [0000-0002-4569-9009], Shimizu, T [0000-0002-2125-4670], Straub, O [0000-0001-5755-0677], Straubmeier, C [0000-0002-0671-9302], Sturm, E [0000-0002-0018-3666], Tacconi, LJ [0000-0002-1485-9401], Van Dishoeck, EF [0000-0001-7591-1907], Vincent, F [0000-0002-3855-0708], Von Fellenberg, SD [0000-0002-9156-2249], Ward-Duong, K [0000-0002-4479-8291], and Apollo - University of Cambridge Repository

Subjects
Orbit determination, Exoplanet formation, Long baseline interferometry, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Astrophysics::Galaxy Astrophysics, Exoplanet atmospheres
Abstract

We present K-band interferometric observations of the PDS 70 protoplanets along with their host star using VLTI/GRAVITY. We obtained K-band spectra and 100 $\mu$as precision astrometry of both PDS 70 b and c in two epochs, as well as spatially resolving the hot inner disk around the star. Rejecting unstable orbits, we found a nonzero eccentricity for PDS 70 b of $0.17 \pm 0.06$, a near-circular orbit for PDS 70 c, and an orbital configuration that is consistent with the planets migrating into a 2:1 mean motion resonance. Enforcing dynamical stability, we obtained a 95% upper limit on the mass of PDS 70 b of 10 $M_\textrm{Jup}$, while the mass of PDS 70 c was unconstrained. The GRAVITY K-band spectra rules out pure blackbody models for the photospheres of both planets. Instead, the models with the most support from the data are planetary atmospheres that are dusty, but the nature of the dust is unclear. Any circumplanetary dust around these planets is not well constrained by the planets' 1-5 $\mu$m spectral energy distributions (SEDs) and requires longer wavelength data to probe with SED analysis. However with VLTI/GRAVITY, we made the first observations of a circumplanetary environment with sub-au spatial resolution, placing an upper limit of 0.3~au on the size of a bright disk around PDS 70 b.

Published
2022
Full Text
View/download PDF

3. Constraining the Nature of the PDS 70 Protoplanets with VLTI/GRAVITY ∗ ∗ Based on observations collected at the European Southern Observatory under ESO programmes 0101.C-0281(B), 1103.B-0626(A), 2103.C-5018(A), and 1104.C-0651(A)

Author

Wang, J. J., Vigan, A., Lacour, S., Nowak, M., Stolker, T., De Rosa, R. J., Ginzburg, S., Gao, P., Abuter, R., Amorim, A., Asensio-Torres, R., Bauböck, M., Benisty, M., Berger, J. P., Beust, H., Beuzit, J.-L., Blunt, S., Boccaletti, A., Bohn, A., Bonnefoy, M., Bonnet, H., Brandner, W., Cantalloube, F., Caselli, P., Charnay, B., Chauvin, G., Choquet, E., Christiaens, V., Clénet, Y., Du Foresto, V. Coudé, Cridland, A., Zeeuw, P. T. De, Dembet, R., Dexter, J., Drescher, A., Duvert, G., Eckart, A., Eisenhauer, F., Facchini, S., Gao, F., Garcia, P., Lopez, R. Garcia, Gardner, T., Gendron, E., Genzel, R., Gillessen, S., Girard, J., Haubois, X., Heißel, G., Henning, T., Hinkley, S., Hippler, S., Horrobin, M., Houllé, M., Hubert, Z., Jiménez-Rosales, A., Jocou, L., Kammerer, J., Keppler, M., Kervella, P., Meyer, M., Kreidberg, L., Lagrange, A.-M., Lapeyrère, V., Bouquin, J.-B. Le, Léna, P., Lutz, D., Maire, A.-L., Ménard, F., Mérand, A., Mollière, P., Monnier, J. D., Mouillet, D., Müller, A., Nasedkin, E., Ott, T., Otten, G. P. P. L., Paladini, C., Paumard, T., Perraut, K., Perrin, G., Pfuhl, O., Pueyo, L., Rameau, J., Rodet, L., Rodríguez-Coira, G., Rousset, G., Scheithauer, S., Shangguan, J., Shimizu, T., Stadler, J., Straub, O., Straubmeier, C., Sturm, E., Tacconi, L. J., Dishoeck, E. F. Van, Vincent, F., Fellenberg, S. D. Von, Ward-Duong, K., Widmann, F., Wieprecht, E., Wiezorrek, E., Woillez, J., Collaboration, The GRAVITY, Wang, J. J. [0000-0003-0774-6502], Vigan, A. [0000-0002-5902-7828], Lacour, S. [0000-0002-6948-0263], Stolker, T. [0000-0002-5823-3072], De Rosa, R. J. [0000-0002-4918-0247], Gao, P. [0000-0002-8518-9601], Asensio-Torres, R. [0000-0003-2990-0726], Benisty, M. [0000-0002-7695-7605], Beuzit, J.-L. [0000-0002-7391-479X], Blunt, S. [0000-0002-3199-2888], Bohn, A. [0000-0003-1401-9952], Bonnefoy, M. [0000-0001-5579-5339], Brandner, W. [0000-0003-1939-6351], Caselli, P. [0000-0003-1481-7911], Charnay, B. [0000-0003-0977-6545], Choquet, E. [0000-0002-9173-0740], Christiaens, V. [0000-0002-0101-8814], Clénet, Y. [0000-0002-8382-2020], Zeeuw, P. T. de [0000-0003-4175-3474], Dexter, J. [0000-0003-3903-0373], Eckart, A. [0000-0001-6049-3132], Facchini, S. [0000-0003-4689-2684], Gao, F. [0000-0002-2581-9114], Lopez, R. Garcia [0000-0002-2144-0991], Gardner, T. [0000-0002-3003-3183], Genzel, R. [0000-0002-2767-9653], Gillessen, S. [0000-0002-5708-0481], Girard, J. [0000-0001-8627-0404], Henning, T. [0000-0002-1493-300X], Hinkley, S. [0000-0001-8074-2562], Hippler, S. [0000-0002-3912-6108], Horrobin, M. [0000-0001-5451-7847], Kervella, P. [0000-0003-0626-1749], Meyer, M. [0000-0003-1227-3084], Kreidberg, L. [0000-0003-0514-1147], Bouquin, J.-B. Le [0000-0002-0493-4674], Lutz, D. [0000-0003-0291-9582], Maire, A.-L. [0000-0002-2591-4138], Ménard, F. [0000-0002-1637-7393], Monnier, J. D. [0000-0002-3380-3307], Ott, T. [0000-0003-1572-0396], Paumard, T. [0000-0003-0655-0452], Perrin, G. [0000-0003-0680-0167], Rameau, J. [0000-0003-0029-0258], Rodríguez-Coira, G. [0000-0002-4177-6433], Shangguan, J. [0000-0002-4569-9009], Shimizu, T. [0000-0002-2125-4670], Straub, O. [0000-0001-5755-0677], Straubmeier, C. [0000-0002-0671-9302], Sturm, E. [0000-0002-0018-3666], Tacconi, L. J. [0000-0002-1485-9401], Dishoeck, E. F. van [0000-0001-7591-1907], Vincent, F. [0000-0002-3855-0708], Fellenberg, S. D. von [0000-0002-9156-2249], Ward-Duong, K. [0000-0002-4479-8291], Woillez, J. [0000-0002-2958-4738], and Apollo - University of Cambridge Repository

Subjects
The Solar System, Exoplanets, and Astrobiology, Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics::Earth and Planetary Astrophysics
Abstract

We present K-band interferometric observations of the PDS 70 protoplanets along with their host star using VLTI/GRAVITY. We obtained K-band spectra and 100 μas precision astrometry of both PDS 70 b and c in two epochs, as well as spatially resolving the hot inner disk around the star. Rejecting unstable orbits, we found a nonzero eccentricity for PDS 70 b of 0.17 ± 0.06, a near-circular orbit for PDS 70 c, and an orbital configuration that is consistent with the planets migrating into a 2:1 mean motion resonance. Enforcing dynamical stability, we obtained a 95% upper limit on the mass of PDS 70 b of 10 M Jup, while the mass of PDS 70 c was unconstrained. The GRAVITY K-band spectra rules out pure blackbody models for the photospheres of both planets. Instead, the models with the most support from the data are planetary atmospheres that are dusty, but the nature of the dust is unclear. Any circumplanetary dust around these planets is not well constrained by the planets’ 1–5 μm spectral energy distributions (SEDs) and requires longer wavelength data to probe with SED analysis. However with VLTI/GRAVITY, we made the first observations of a circumplanetary environment with sub-astronomical-unit spatial resolution, placing an upper limit of 0.3 au on the size of a bright disk around PDS 70 b.

Published
2021
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results