Hocde, V, Nardetto, N., Matter, A., Lagadec, E., Merand, A., Cruzalebes, P., Meilland, A., Millour, F., Lopez, B., Berio, P., Weigelt, G., Petrov, R., Isbell, J. W., Jaffe, W., Kervella, P., Glindemann, A., Scholler, M., Allouche, F., Gallenne, A., de Souza, A. Domiciano, Niccolini, G., Kokoulina, E., Varga, J., Lagarde, S., Augereau, J-C, van Boekel, R., Bristow, P., Henning, Th, Hofmann, K-H, Zins, G., Danchi, W-C, Delbo, M., Dominik, C., Rosas, V. Gamez, Klarmann, L., Hron, J., Hogerheijde, M. R., Meisenheimer, K., Pantin, E., Paladini, C., Robbe-Dubois, S., Schertl, D., Stee, P., Waters, R., Lehmitz, M., Bettonvil, F., Heininger, M., Woillez, J., Wolf, S., Yoffe, G., Szabados, L., Chiavassa, A., Borgniet, S., Breuval, L., Javanmardi, B., Abraham, P., Abadie, S., Abuter, R., Accardo, M., Adler, T., Agocs, T., Alonso, J., Antonelli, P., Bohm, A., Bailet, C., Bazin, G., Beckmann, U., Beltran, J., Boland, W., Bourget, P., Brast, R., Bresson, Y., Burtscher, L., Buter, R., Castillo, R., Chelli, A., Cid, C., Clausse, J-M, Connot, C., Conzelmann, R. D., De Haan, M., Ebert, M., Elswijk, E., Fantei, Y., Frahm, R., Gabasch, A., Garces, E., Girard, P., Glazenborg, A., Gonte, F. Y. J., Herrera, J. C. Gonzalez, Graser, U., Guajardo, P., Guitton, F., Hanenburg, H., Haubois, X., Hubin, N., Huerta, R., Idserda, J., Ives, D., Jakob, G., Jasko, A., Jochum, L., Klein, R., Kragt, J., Kroes, G., Kuindersma, S., Labadie, L., Laun, W., Le Poole, R., Leinert, C., Lizon, J-L, Lopez, M., Marcotto, A., Mauclert, N., Maurer, T., Mehrgan, L. H., Meisner, J., Meixner, K., Mellein, M., Mohr, L., Morel, S., Mosoni, L., Navarro, R., Neumann, U., Nussbaum, E., Pallanca, L., Pasquini, L., Percheron, I, Duc, T. Phan, Pott, J-U, Pozna, E., Ridinger, A., Rigal, F., Riquelme, M., Rivinius, Th, Roelfsema, R., Rohloff, R-R, Rousseau, S., Schuhler, N., Schuil, M., Shabun, K., Soulain, A., Stephan, C., ter Horst, R., Tromp, N., Vakili, F., van Duin, A., Venema, L. B., Vinther, J., Wittkowski, M. and Wrhel, F. (2021). Mid-infrared circumstellar emission of the long-period Cepheid l Carinae resolved with VLTI/MATISSE. Astron. Astrophys., 651. LES ULIS CEDEX A: EDP SCIENCES S A. ISSN 1432-0746

Full text not available from this repository.

Abstract

Context. The nature of circumstellar envelopes (CSEs) around Cepheids is a matter of ongoing debate. The physical origin of their infrared (IR) excess could be shown to either be made up of a shell of ionized gas, a dust envelope, or a combination of both.Aims. This study is aimed at constraining the geometry and the IR excess of the environment of the bright long-period Cepheid l Car (P = 35.5 days) at mid-IR wavelengths in order to understand its physical nature.Methods. We first used photometric observations in various bands (from the visible domain to the infrared) and Spitzer Space Telescope spectroscopy to constrain the IR excess of l Car. Then we analyzed the VLTI/MATISSE measurements at a specific phase of observation in order to determine the flux contribution as well as the size and shape of the environment of the star in the L band. Finally, we tested the hypothesis of a shell of ionized gas in order to model the IR excess.Results. We report the first detection in the L band of a centro-symmetric extended emission around l Car, of about 1.7 R-star in full width at half maximum, producing an excess of about 7.0% in this band.This latter value is used to calibrate the IR excess found when comparing the photometric observations in various bands and quasi-static atmosphere models. In the N band, there is no clear evidence for dust emission from VLTI/MATISSE correlated flux and Spitzer data. On the other side, the modeled shell of ionized gas implies a more compact CSE (1.13 0.02 R-star) that is also fainter (IR excess of 1% in the L band).Conclusions. We provide new evidence supporting a compact CSE for l Car and we demonstrate the capabilities of VLTI/MATISSE for determining common properties of CSEs. While the compact CSE of l Car is likely to be of a gaseous nature, the tested model of a shell of ionized gas is not able to simultaneously reproduce the IR excess and the interferometric observations. Further Galactic Cepheid observations with VLTI/MATISSE are necessary for determining the properties of CSEs, which may also depend on both the pulsation period and the evolutionary state of the stars.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Hocde, VUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Nardetto, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Matter, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lagadec, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Merand, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Cruzalebes, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Meilland, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Millour, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lopez, B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Berio, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Weigelt, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Petrov, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Isbell, J. W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Jaffe, W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kervella, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Glindemann, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Scholler, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Allouche, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gallenne, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
de Souza, A. DomicianoUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Niccolini, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kokoulina, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Varga, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lagarde, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Augereau, J-CUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
van Boekel, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bristow, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Henning, ThUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hofmann, K-HUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zins, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Danchi, W-CUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Delbo, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Dominik, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rosas, V. GamezUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Klarmann, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hron, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hogerheijde, M. R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Meisenheimer, K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pantin, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Paladini, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Robbe-Dubois, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schertl, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Stee, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Waters, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lehmitz, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bettonvil, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Heininger, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Woillez, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wolf, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Yoffe, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Szabados, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Chiavassa, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Borgniet, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Breuval, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Javanmardi, B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Abraham, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Abadie, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Abuter, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Accardo, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Adler, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Agocs, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Alonso, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Antonelli, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bohm, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bailet, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bazin, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Beckmann, U.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Beltran, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Boland, W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bourget, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Brast, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bresson, Y.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Burtscher, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Buter, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Castillo, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Chelli, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Cid, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Clausse, J-MUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Connot, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Conzelmann, R. D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
De Haan, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ebert, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Elswijk, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fantei, Y.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Frahm, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gabasch, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Garces, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Girard, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Glazenborg, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gonte, F. Y. J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Herrera, J. C. GonzalezUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Graser, U.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Guajardo, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Guitton, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hanenburg, H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Haubois, X.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hubin, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Huerta, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Idserda, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ives, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Jakob, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Jasko, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Jochum, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Klein, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kragt, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kroes, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kuindersma, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Labadie, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Laun, W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Le Poole, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Leinert, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lizon, J-LUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lopez, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Marcotto, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mauclert, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Maurer, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mehrgan, L. H.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Meisner, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Meixner, K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mellein, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mohr, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Morel, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mosoni, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Navarro, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Neumann, U.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Nussbaum, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pallanca, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pasquini, L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Percheron, IUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Duc, T. PhanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pott, J-UUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pozna, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ridinger, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rigal, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Riquelme, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rivinius, ThUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Roelfsema, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rohloff, R-RUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rousseau, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schuhler, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schuil, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Shabun, K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Soulain, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Stephan, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
ter Horst, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tromp, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Vakili, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
van Duin, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Venema, L. B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Vinther, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wittkowski, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wrhel, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-606799
DOI: 10.1051/0004-6361/202140626
Journal or Publication Title: Astron. Astrophys.
Volume: 651
Date: 2021
Publisher: EDP SCIENCES S A
Place of Publication: LES ULIS CEDEX A
ISSN: 1432-0746
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
HIGH-RESOLUTION SPECTROSCOPY; NEAR-INFRARED INTERFEROMETRY; PROJECTION FACTOR; EXTENDED ENVELOPES; GALACTIC CEPHEIDS; DISTANCE DETERMINATION; DELTA-CEPHEI; OBSERVATIONAL CALIBRATION; HUBBLE PROGRAM; MASS-LOSSMultiple languages
Astronomy & AstrophysicsMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/60679

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