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A Deep Search for Planets in the Inner 15 au around Vega

Meshkat, Tiffany and Nilsson, Ricky and Aguilar, Jonathan and Vasisht, Gautam and Oppenheimer, Rebecca and Su, Kate Y. L. and Cady, Eric and Lockhart, Thomas and Matthews, Christopher and Dekany, Richard and Leisenring, Jarron and Ygouf, Marie and Mawet, Dimitri and Pueyo, Laurent and Beichman, Charles (2018) A Deep Search for Planets in the Inner 15 au around Vega. Astronomical Journal, 156 (5). Art. No. 214. ISSN 1538-3881. http://resolver.caltech.edu/CaltechAUTHORS:20181023-090840047

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Abstract

We present the results of a deep high-contrast imaging search for planets around Vega. Vega is an ideal target for high-contrast imaging because it is bright, nearby, and young with a face-on two-belt debris disk that may be shaped by unseen planets. We obtained J- and H-band data on Vega with the coronagraphic integral-field spectrograph Project 1640 (P1640) at Palomar Observatory. Two nights of data were obtained in 2016, in poor seeing conditions, and two additional nights in more favorable conditions in 2017. In total, we obtained 5.5 hours of integration time on Vega in moderate to good seeing conditions (<1farcs5). We did not detect any low-mass companions in this system. Our data present the most sensitive contrast limits around Vega at very small separations (2–15 au) thus far, allowing us to place new constraints on the companions that may be sculpting the Vega system. In addition to new constraints, as the deepest data obtained with P1640, these observations form the final legacy of the now decommissioned instrument.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.3847/1538-3881/aae14fDOIArticle
https://arxiv.org/abs/1809.06941arXivDiscussion Paper
ORCID:
AuthorORCID
Meshkat, Tiffany0000-0001-6126-2467
Nilsson, Ricky0000-0002-5408-4954
Aguilar, Jonathan0000-0003-3184-0873
Vasisht, Gautam0000-0002-1871-6264
Oppenheimer, Rebecca0000-0001-7130-7681
Su, Kate Y. L.0000-0002-3532-5580
Cady, Eric0000-0002-8789-2931
Matthews, Christopher0000-0002-7782-0272
Leisenring, Jarron0000-0002-0834-6140
Mawet, Dimitri0000-0002-8895-4735
Pueyo, Laurent0000-0003-3818-408X
Additional Information:© 2018 The American Astronomical Society. Received 2018 June 11; revised 2018 September 5; accepted 2018 September 11; published 2018 October 18. We thank the anonymous referee for their helpful suggestions that improved this paper. We thank the Palomar mountain crew, especially Bruce Baker, Mike Doyle, Carolyn Heffner, John Henning, Greg van Idsinga, Steve Kunsman, Dan McKenna, Jean Mueller, Kajsa Peffer, Paul Nied, Joel Pearman, Kevin Rykoski, Carolyn Heffner, Jamey Eriksen, and Pam Thompson. We thank AAron Veicht for his contributions to the data acquisition during the observations. K.Y.L.S. acknowledges the partial support from the NASA grant NNX15AI86G. G.V. acknowledges the JPL Research & Technology Program and the NASA XRP grant 399131.02.07.02.66.
Group:Infrared Processing and Analysis Center (IPAC)
Funders:
Funding AgencyGrant Number
NASANNX15AI86G
JPL Research and Technology Development FundUNSPECIFIED
NASA399131.02.07.02.66
Subject Keywords:circumstellar matter – planets and satellites: detection – stars: individual (Vega) – techniques: high angular resolution
Record Number:CaltechAUTHORS:20181023-090840047
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20181023-090840047
Official Citation:Tiffany Meshkat et al 2018 AJ 156 214
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:90348
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:23 Oct 2018 21:49
Last Modified:23 Oct 2018 21:49

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