An Unbiased ALMA Spectral Survey of the LkCa 15 and MWC 480 Protoplanetary Disks

Ryan A. Loomis; Karin I. berg; Sean M. Andrews; Edwin Bergin; Jennifer Bergner; Geoffrey A. Blake; L. Ilsedore Cleeves; Ian Czekala; Jane Huang; Romane Le Gal; Francois Ménard; Jamila Pegues; Chunhua Qi; Catherine Walsh; Jonathan P. Williams; David J. Wilner

doi:10.3847/1538-4357/ab7cc8

An Unbiased ALMA Spectral Survey of the LkCa 15 and MWC 480 Protoplanetary Disks

Ryan A. Loomis, Karin I. berg, Sean M. Andrews, Edwin Bergin, Jennifer Bergner, Geoffrey A. Blake, L. Ilsedore Cleeves, Ian Czekala, Jane Huang, Romane Le Gal, Francois Ménard, Jamila Pegues, Chunhua Qi, Catherine Walsh, Jonathan P. Williams, David J. Wilner

Astronomy & Astrophysics

Research output: Contribution to journal › Review article › peer-review

22 Scopus citations

Abstract

The volatile contents of protoplanetary disks both set the potential for planetary chemistry and provide valuable probes of defining disk system characteristics such as stellar mass, gas mass, ionization, and temperature structure. Current disk molecular inventories are fragmented, however, giving an incomplete picture: unbiased spectral line surveys are needed to assess the volatile content. We present here an overview of such a survey of the protoplanetary disks around the Herbig Ae star MWC 480 and the T Tauri star LkCa 15 in ALMA Band 7, spanning ∼36 GHz from 275 to 317 GHz and representing an order of magnitude increase in sensitivity over previous single-dish surveys. We detect 14 molecular species (including isotopologues), with five species (C³⁴S, ¹³CS, H₂CS, DNC, and C₂D) detected for the first time in protoplanetary disks. Significant differences are observed in the molecular inventories of MWC 480 and LkCa 15, and we discuss how these results may be interpreted in light of the different physical conditions of these two disk systems.

Original language	English (US)
Article number	101
Journal	Astrophysical Journal
Volume	893
Issue number	2
DOIs	https://doi.org/10.3847/1538-4357/ab7cc8
State	Published - Apr 20 2020

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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Loomis, R. A., berg, K. I., Andrews, S. M., Bergin, E., Bergner, J., Blake, G. A., Cleeves, L. I., Czekala, I., Huang, J., Le Gal, R., Ménard, F., Pegues, J., Qi, C., Walsh, C., Williams, J. P., & Wilner, D. J. (2020). An Unbiased ALMA Spectral Survey of the LkCa 15 and MWC 480 Protoplanetary Disks. Astrophysical Journal, 893(2), Article 101. https://doi.org/10.3847/1538-4357/ab7cc8

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title = "An Unbiased ALMA Spectral Survey of the LkCa 15 and MWC 480 Protoplanetary Disks",

abstract = "The volatile contents of protoplanetary disks both set the potential for planetary chemistry and provide valuable probes of defining disk system characteristics such as stellar mass, gas mass, ionization, and temperature structure. Current disk molecular inventories are fragmented, however, giving an incomplete picture: unbiased spectral line surveys are needed to assess the volatile content. We present here an overview of such a survey of the protoplanetary disks around the Herbig Ae star MWC 480 and the T Tauri star LkCa 15 in ALMA Band 7, spanning ∼36 GHz from 275 to 317 GHz and representing an order of magnitude increase in sensitivity over previous single-dish surveys. We detect 14 molecular species (including isotopologues), with five species (C34S, 13CS, H2CS, DNC, and C2D) detected for the first time in protoplanetary disks. Significant differences are observed in the molecular inventories of MWC 480 and LkCa 15, and we discuss how these results may be interpreted in light of the different physical conditions of these two disk systems.",

author = "Loomis, {Ryan A.} and berg, {Karin I.} and Andrews, {Sean M.} and Edwin Bergin and Jennifer Bergner and Blake, {Geoffrey A.} and Cleeves, {L. Ilsedore} and Ian Czekala and Jane Huang and {Le Gal}, Romane and Francois M{\'e}nard and Jamila Pegues and Chunhua Qi and Catherine Walsh and Williams, {Jonathan P.} and Wilner, {David J.}",

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doi = "10.3847/1538-4357/ab7cc8",

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T1 - An Unbiased ALMA Spectral Survey of the LkCa 15 and MWC 480 Protoplanetary Disks

AU - Loomis, Ryan A.

AU - berg, Karin I.

AU - Andrews, Sean M.

AU - Bergin, Edwin

AU - Bergner, Jennifer

AU - Blake, Geoffrey A.

AU - Cleeves, L. Ilsedore

AU - Czekala, Ian

AU - Huang, Jane

AU - Le Gal, Romane

AU - Ménard, Francois

AU - Pegues, Jamila

AU - Qi, Chunhua

AU - Walsh, Catherine

AU - Williams, Jonathan P.

AU - Wilner, David J.

PY - 2020/4/20

Y1 - 2020/4/20

N2 - The volatile contents of protoplanetary disks both set the potential for planetary chemistry and provide valuable probes of defining disk system characteristics such as stellar mass, gas mass, ionization, and temperature structure. Current disk molecular inventories are fragmented, however, giving an incomplete picture: unbiased spectral line surveys are needed to assess the volatile content. We present here an overview of such a survey of the protoplanetary disks around the Herbig Ae star MWC 480 and the T Tauri star LkCa 15 in ALMA Band 7, spanning ∼36 GHz from 275 to 317 GHz and representing an order of magnitude increase in sensitivity over previous single-dish surveys. We detect 14 molecular species (including isotopologues), with five species (C34S, 13CS, H2CS, DNC, and C2D) detected for the first time in protoplanetary disks. Significant differences are observed in the molecular inventories of MWC 480 and LkCa 15, and we discuss how these results may be interpreted in light of the different physical conditions of these two disk systems.

AB - The volatile contents of protoplanetary disks both set the potential for planetary chemistry and provide valuable probes of defining disk system characteristics such as stellar mass, gas mass, ionization, and temperature structure. Current disk molecular inventories are fragmented, however, giving an incomplete picture: unbiased spectral line surveys are needed to assess the volatile content. We present here an overview of such a survey of the protoplanetary disks around the Herbig Ae star MWC 480 and the T Tauri star LkCa 15 in ALMA Band 7, spanning ∼36 GHz from 275 to 317 GHz and representing an order of magnitude increase in sensitivity over previous single-dish surveys. We detect 14 molecular species (including isotopologues), with five species (C34S, 13CS, H2CS, DNC, and C2D) detected for the first time in protoplanetary disks. Significant differences are observed in the molecular inventories of MWC 480 and LkCa 15, and we discuss how these results may be interpreted in light of the different physical conditions of these two disk systems.

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JF - Astrophysical Journal

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An Unbiased ALMA Spectral Survey of the LkCa 15 and MWC 480 Protoplanetary Disks

Abstract

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