First results from very large telescope NACO apodizing phase plate

4 μm images of the exoplanet β Pictoris b

Sascha P. Quanz, Michael R. Meyer, Matthew A. Kenworthy, Julien H V Girard, Markus Kasper, Anne Marie Lagrange, Daniel Apai, Anthony Boccaletti, Mickaël Bonnefoy, Gael Chauvin, Philip M Hinz, Rainer Lenzen

Research output: Contribution to journalArticle

65 Citations (Scopus)

Abstract

Direct imaging of exoplanets requires both high contrast and h igh spatial resolution. Here, we present the first scientific results obtained with the newly commissioned apodizing phase plate coronagraph (APP) on VLT/NACO.We detected the exoplanet β Pictoris b in the narrowband filter centered at 4.05 μm (NB4.05). The position angle (209. ° 13 ± 2. ° 12) and the projected separation to its host star (0.″.354 ± 0. ″.012, i.e., 6.8 ± 0.2 AU at a distance of 19.3 pc) are in good agreement with the recently presented data from Lagrange et al. Comparing the observed NB4.05 magnitude of 11.20 ± 0.23 mag to theoretical atmospheric models, we find a best fit with a 7-10 M Jupiter object for an age of 12 Myr, again in agreement with previous estimates. Combining our results with published L′photometry, we can compare the planet's [L ′ - NB4.05] color to that of cool field dwarfs of higher surface gravity suggesting an effective temperature of ∼ 1700 K. The best-fit theo retical model predicts an effective temperature of ∼ 1470 K, but this difference is not significant given our photometric uncertainties. Our results demonstrate the potential of NACO/APP for future planet searches and provide independent confirmation as well as complementary data for β Pic b.

Original languageEnglish (US)
JournalAstrophysical Journal Letters
Volume722
Issue number1 PART 2
DOIs
StatePublished - Oct 10 2010

Fingerprint

coronagraphs
extrasolar planets
planets
planet
telescopes
atmospheric models
Jupiter (planet)
Jupiter
narrowband
spatial resolution
temperature
gravity
gravitation
filter
color
filters
stars
estimates
atmospheric model

Keywords

  • Planets and satellites: detection
  • Planets and satellites: formation
  • Stars: formation
  • Stars: pre-main sequence

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Quanz, S. P., Meyer, M. R., Kenworthy, M. A., Girard, J. H. V., Kasper, M., Lagrange, A. M., ... Lenzen, R. (2010). First results from very large telescope NACO apodizing phase plate: 4 μm images of the exoplanet β Pictoris b. Astrophysical Journal Letters, 722(1 PART 2). https://doi.org/10.1088/2041-8205/722/1/L49

First results from very large telescope NACO apodizing phase plate : 4 μm images of the exoplanet β Pictoris b. / Quanz, Sascha P.; Meyer, Michael R.; Kenworthy, Matthew A.; Girard, Julien H V; Kasper, Markus; Lagrange, Anne Marie; Apai, Daniel; Boccaletti, Anthony; Bonnefoy, Mickaël; Chauvin, Gael; Hinz, Philip M; Lenzen, Rainer.

In: Astrophysical Journal Letters, Vol. 722, No. 1 PART 2, 10.10.2010.

Research output: Contribution to journalArticle

Quanz, SP, Meyer, MR, Kenworthy, MA, Girard, JHV, Kasper, M, Lagrange, AM, Apai, D, Boccaletti, A, Bonnefoy, M, Chauvin, G, Hinz, PM & Lenzen, R 2010, 'First results from very large telescope NACO apodizing phase plate: 4 μm images of the exoplanet β Pictoris b', Astrophysical Journal Letters, vol. 722, no. 1 PART 2. https://doi.org/10.1088/2041-8205/722/1/L49
Quanz, Sascha P. ; Meyer, Michael R. ; Kenworthy, Matthew A. ; Girard, Julien H V ; Kasper, Markus ; Lagrange, Anne Marie ; Apai, Daniel ; Boccaletti, Anthony ; Bonnefoy, Mickaël ; Chauvin, Gael ; Hinz, Philip M ; Lenzen, Rainer. / First results from very large telescope NACO apodizing phase plate : 4 μm images of the exoplanet β Pictoris b. In: Astrophysical Journal Letters. 2010 ; Vol. 722, No. 1 PART 2.
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