VISION - Vienna survey in Orion. I. VISTA Orion A Survey

Stefan Meingast; João Alves; Diego Mardones; Paula Stella Teixeira; Marco Lombardi; Josefa Großschedl; Joana Ascenso; Herve Bouy; Jan Forbrich; Alyssa Goodman; Alvaro Hacar; Birgit Hasenberger; Jouni Kainulainen; Karolina Kubiak; Charles Lada; Elizabeth Lada; André Moitinho; Monika Petr-Gotzens; Lara Rodrigues; Carlos G. Román-Zúñiga

doi:10.1051/0004-6361/201527160

VISION - Vienna survey in Orion. I. VISTA Orion A Survey

Stefan Meingast, João Alves, Diego Mardones, Paula Stella Teixeira, Marco Lombardi, Josefa Großschedl, Joana Ascenso, Herve Bouy, Jan Forbrich, Alyssa Goodman, Alvaro Hacar, Birgit Hasenberger, Jouni Kainulainen, Karolina Kubiak, Charles Lada, Elizabeth Lada, André Moitinho, Monika Petr-Gotzens, Lara Rodrigues, Carlos G. Román-Zúñiga

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

Context. Orion A hosts the nearest massive star factory, thus offering a unique opportunity to resolve the processes connected with the formation of both low- and high-mass stars. Here we present the most detailed and sensitive near-infrared (NIR) observations of the entire molecular cloud to date.
Aims. With the unique combination of high image quality,survey coverage, and sensitivity, our NIR survey of Orion A aims at establishing a solid empirical foundation for further studies of this important cloud. In this first paper we present the observations, data reduction, and source catalog generation. To demonstrate the data quality, we present a first application of our catalog to estimate the number of stars currently forming inside Orion A and to verify the existence of a more evolved young foreground population.
Methods. We used the European Southern Observatory's (ESO) Visible and Infrared Survey Telescope for Astronomy (VISTA) to survey the entire Orion A molecular cloud in the NIR J, H, and K_S bands, covering a total of ~18.3 deg². We implemented all data reduction recipes independently of the ESO pipeline. Estimates of the young populations toward Orion A are derived via the K_S-band luminosity function.
Results. Our catalog (799 995 sources)increases the source counts compared to the Two Micron All Sky Survey by about an order of magnitude. The 90% completeness limits are 20.4, 19.9, and 19.0 mag in J, H, and K_S, respectively. The reduced images have 20% better resolution on average compared to pipeline products. We find between 2300 and 3000 embedded objects in Orion A and confirm that there is an extended foreground population above the Galactic field, in agreement with previous work.
Conclusions. The Orion A VISTA catalog represents the most detailed NIR view of the nearest massive star-forming region and provides a fundamental basis for future studies of star formation processes toward Orion.

Original language	English
Article number	A153
Number of pages	31
Journal	Astronomy & Astrophysics
Volume	587
DOIs	https://doi.org/10.1051/0004-6361/201527160
Publication status	Published - 7 Mar 2016

Keywords

Techniques: image processing
Methods: data analysis
Stars: formation
Stars: pre-main sequence

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10.1051/0004-6361/201527160

Teixeira_2016_AA_VISION_AAM
© ESO, 2016. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1051/0004-6361/201527160
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Cite this

Meingast, S., Alves, J., Mardones, D., Teixeira, P. S., Lombardi, M., Großschedl, J., Ascenso, J., Bouy, H., Forbrich, J., Goodman, A., Hacar, A., Hasenberger, B., Kainulainen, J., Kubiak, K., Lada, C., Lada, E., Moitinho, A., Petr-Gotzens, M., Rodrigues, L., & Román-Zúñiga, C. G. (2016). VISION - Vienna survey in Orion. I. VISTA Orion A Survey. Astronomy & Astrophysics, 587, Article A153. https://doi.org/10.1051/0004-6361/201527160

@article{a38ad683a82c44fab328370d2fd2b159,

title = "VISION - Vienna survey in Orion. I. VISTA Orion A Survey",

abstract = "Context. Orion A hosts the nearest massive star factory, thus offering a unique opportunity to resolve the processes connected with the formation of both low- and high-mass stars. Here we present the most detailed and sensitive near-infrared (NIR) observations of the entire molecular cloud to date.Aims. With the unique combination of high image quality,survey coverage, and sensitivity, our NIR survey of Orion A aims at establishing a solid empirical foundation for further studies of this important cloud. In this first paper we present the observations, data reduction, and source catalog generation. To demonstrate the data quality, we present a first application of our catalog to estimate the number of stars currently forming inside Orion A and to verify the existence of a more evolved young foreground population.Methods. We used the European Southern Observatory's (ESO) Visible and Infrared Survey Telescope for Astronomy (VISTA) to survey the entire Orion A molecular cloud in the NIR J, H, and KS bands, covering a total of ~18.3 deg2. We implemented all data reduction recipes independently of the ESO pipeline. Estimates of the young populations toward Orion A are derived via the KS-band luminosity function.Results. Our catalog (799 995 sources)increases the source counts compared to the Two Micron All Sky Survey by about an order of magnitude. The 90% completeness limits are 20.4, 19.9, and 19.0 mag in J, H, and KS, respectively. The reduced images have 20% better resolution on average compared to pipeline products. We find between 2300 and 3000 embedded objects in Orion A and confirm that there is an extended foreground population above the Galactic field, in agreement with previous work.Conclusions. The Orion A VISTA catalog represents the most detailed NIR view of the nearest massive star-forming region and provides a fundamental basis for future studies of star formation processes toward Orion.",

keywords = "Techniques: image processing, Methods: data analysis, Stars: formation, Stars: pre-main sequence",

author = "Stefan Meingast and Jo{\~a}o Alves and Diego Mardones and Teixeira, {Paula Stella} and Marco Lombardi and Josefa Gro{\ss}schedl and Joana Ascenso and Herve Bouy and Jan Forbrich and Alyssa Goodman and Alvaro Hacar and Birgit Hasenberger and Jouni Kainulainen and Karolina Kubiak and Charles Lada and Elizabeth Lada and Andr{\'e} Moitinho and Monika Petr-Gotzens and Lara Rodrigues and Rom{\'a}n-Z{\'u}{\~n}iga, {Carlos G.}",

note = "Stefan Meingast is a recipient of a DOC Fellowship of the Austrian Academy of Sciences at the Institute for Astrophysics, University of Vienna. H. Bouy is supported by the the Ram{\'o}n y Cajal fellowship program number RYC-2009-04497 and by the Spanish Grant AYA2012-38897-C02-01.",

year = "2016",

month = mar,

day = "7",

doi = "10.1051/0004-6361/201527160",

language = "English",

volume = "587",

journal = "Astronomy & Astrophysics",

issn = "0004-6361",

publisher = "EDP SCIENCES S A",

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Meingast, S, Alves, J, Mardones, D, Teixeira, PS, Lombardi, M, Großschedl, J, Ascenso, J, Bouy, H, Forbrich, J, Goodman, A, Hacar, A, Hasenberger, B, Kainulainen, J, Kubiak, K, Lada, C, Lada, E, Moitinho, A, Petr-Gotzens, M, Rodrigues, L & Román-Zúñiga, CG 2016, 'VISION - Vienna survey in Orion. I. VISTA Orion A Survey', Astronomy & Astrophysics, vol. 587, A153. https://doi.org/10.1051/0004-6361/201527160

TY - JOUR

T1 - VISION - Vienna survey in Orion. I. VISTA Orion A Survey

AU - Meingast, Stefan

AU - Alves, João

AU - Mardones, Diego

AU - Teixeira, Paula Stella

AU - Lombardi, Marco

AU - Großschedl, Josefa

AU - Ascenso, Joana

AU - Bouy, Herve

AU - Forbrich, Jan

AU - Goodman, Alyssa

AU - Hacar, Alvaro

AU - Hasenberger, Birgit

AU - Kainulainen, Jouni

AU - Kubiak, Karolina

AU - Lada, Charles

AU - Lada, Elizabeth

AU - Moitinho, André

AU - Petr-Gotzens, Monika

AU - Rodrigues, Lara

AU - Román-Zúñiga, Carlos G.

N1 - Stefan Meingast is a recipient of a DOC Fellowship of the Austrian Academy of Sciences at the Institute for Astrophysics, University of Vienna. H. Bouy is supported by the the Ramón y Cajal fellowship program number RYC-2009-04497 and by the Spanish Grant AYA2012-38897-C02-01.

PY - 2016/3/7

Y1 - 2016/3/7

N2 - Context. Orion A hosts the nearest massive star factory, thus offering a unique opportunity to resolve the processes connected with the formation of both low- and high-mass stars. Here we present the most detailed and sensitive near-infrared (NIR) observations of the entire molecular cloud to date.Aims. With the unique combination of high image quality,survey coverage, and sensitivity, our NIR survey of Orion A aims at establishing a solid empirical foundation for further studies of this important cloud. In this first paper we present the observations, data reduction, and source catalog generation. To demonstrate the data quality, we present a first application of our catalog to estimate the number of stars currently forming inside Orion A and to verify the existence of a more evolved young foreground population.Methods. We used the European Southern Observatory's (ESO) Visible and Infrared Survey Telescope for Astronomy (VISTA) to survey the entire Orion A molecular cloud in the NIR J, H, and KS bands, covering a total of ~18.3 deg2. We implemented all data reduction recipes independently of the ESO pipeline. Estimates of the young populations toward Orion A are derived via the KS-band luminosity function.Results. Our catalog (799 995 sources)increases the source counts compared to the Two Micron All Sky Survey by about an order of magnitude. The 90% completeness limits are 20.4, 19.9, and 19.0 mag in J, H, and KS, respectively. The reduced images have 20% better resolution on average compared to pipeline products. We find between 2300 and 3000 embedded objects in Orion A and confirm that there is an extended foreground population above the Galactic field, in agreement with previous work.Conclusions. The Orion A VISTA catalog represents the most detailed NIR view of the nearest massive star-forming region and provides a fundamental basis for future studies of star formation processes toward Orion.

AB - Context. Orion A hosts the nearest massive star factory, thus offering a unique opportunity to resolve the processes connected with the formation of both low- and high-mass stars. Here we present the most detailed and sensitive near-infrared (NIR) observations of the entire molecular cloud to date.Aims. With the unique combination of high image quality,survey coverage, and sensitivity, our NIR survey of Orion A aims at establishing a solid empirical foundation for further studies of this important cloud. In this first paper we present the observations, data reduction, and source catalog generation. To demonstrate the data quality, we present a first application of our catalog to estimate the number of stars currently forming inside Orion A and to verify the existence of a more evolved young foreground population.Methods. We used the European Southern Observatory's (ESO) Visible and Infrared Survey Telescope for Astronomy (VISTA) to survey the entire Orion A molecular cloud in the NIR J, H, and KS bands, covering a total of ~18.3 deg2. We implemented all data reduction recipes independently of the ESO pipeline. Estimates of the young populations toward Orion A are derived via the KS-band luminosity function.Results. Our catalog (799 995 sources)increases the source counts compared to the Two Micron All Sky Survey by about an order of magnitude. The 90% completeness limits are 20.4, 19.9, and 19.0 mag in J, H, and KS, respectively. The reduced images have 20% better resolution on average compared to pipeline products. We find between 2300 and 3000 embedded objects in Orion A and confirm that there is an extended foreground population above the Galactic field, in agreement with previous work.Conclusions. The Orion A VISTA catalog represents the most detailed NIR view of the nearest massive star-forming region and provides a fundamental basis for future studies of star formation processes toward Orion.

KW - Techniques: image processing

KW - Methods: data analysis

KW - Stars: formation

KW - Stars: pre-main sequence

UR - http://adsabs.harvard.edu/abs/2016A%26A...587A.153M

U2 - 10.1051/0004-6361/201527160

DO - 10.1051/0004-6361/201527160

M3 - Article

SN - 0004-6361

VL - 587

JO - Astronomy & Astrophysics

JF - Astronomy & Astrophysics

M1 - A153

ER -

VISION - Vienna survey in Orion. I. VISTA Orion A Survey

Abstract

Keywords

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