中国物理B ›› 2023, Vol. 32 ›› Issue (3): 39801-039801.doi: 10.1088/1674-1056/acb0ba

• • 上一篇    

Measuring stellar populations, dust attenuation and ionized gas at kpc scales in 10010 nearby galaxies using the integral field spectroscopy from MaNGA

Niu Li(李牛)† and Cheng Li(李成)‡   

  1. Department of Astronomy, Tsinghua University, Beijing 100084, China
  • 收稿日期:2022-11-19 修回日期:2023-01-03 接受日期:2023-01-06 出版日期:2023-02-14 发布日期:2023-02-21
  • 通讯作者: Niu Li, Cheng Li E-mail:liniu@mail.tsinghua.edu.cn;cli2015@tsinghua.edu.cn
  • 基金资助:
    This work is supported by the National Key R&D Program of China (Grant No. 2018YFA0404502), and the National Natural Science Foundation of China (Grant Nos. 11821303, 11733002, 11973030, 11673015, 11733004, 11761131004, and 11761141012).

Measuring stellar populations, dust attenuation and ionized gas at kpc scales in 10010 nearby galaxies using the integral field spectroscopy from MaNGA

Niu Li(李牛)† and Cheng Li(李成)‡   

  1. Department of Astronomy, Tsinghua University, Beijing 100084, China
  • Received:2022-11-19 Revised:2023-01-03 Accepted:2023-01-06 Online:2023-02-14 Published:2023-02-21
  • Contact: Niu Li, Cheng Li E-mail:liniu@mail.tsinghua.edu.cn;cli2015@tsinghua.edu.cn
  • Supported by:
    This work is supported by the National Key R&D Program of China (Grant No. 2018YFA0404502), and the National Natural Science Foundation of China (Grant Nos. 11821303, 11733002, 11973030, 11673015, 11733004, 11761131004, and 11761141012).

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摘要： As one of the three major experiments of the fourth-generation Sloan Digital Sky Survey (SDSS-IV), the Mapping Nearby Galaxies at Apatch Point Observatory (MaNGA) survey has obtained high-quality integral field spectroscopy (IFS) with a resolution of 1-2 kpc for ～104 galaxies in the local universe during its six-year operation from July 2014 through August 2020. It is crucial to reliably measure the physical properties of the different components in each spectrum before one can use the data for any scientific study. In the past years we have made lots of efforts to develop a novel technique of full spectral fitting, which estimates a model-independent dust attenuation curve from each spectrum, thus allowing us to break the degeneracy between dust attenuation and stellar population properties when fitting the spectrum with stellar population synthesis models. We have applied our technique to the final data release of MaNGA, and obtained measurements of stellar population properties and emission line parameters, as well as the kinematics and dust attenuation of both stellar and ionized gas components. In this paper we describe our technique and the content and format of our data products. The whole dataset is publicly available in Science Data Bank with the link https://doi.org/10.57760/sciencedb.j00113.00088.

关键词: integral field spectroscopy, stellar populations, dust attenuation, ionized gas

Abstract: As one of the three major experiments of the fourth-generation Sloan Digital Sky Survey (SDSS-IV), the Mapping Nearby Galaxies at Apatch Point Observatory (MaNGA) survey has obtained high-quality integral field spectroscopy (IFS) with a resolution of 1-2 kpc for ～104 galaxies in the local universe during its six-year operation from July 2014 through August 2020. It is crucial to reliably measure the physical properties of the different components in each spectrum before one can use the data for any scientific study. In the past years we have made lots of efforts to develop a novel technique of full spectral fitting, which estimates a model-independent dust attenuation curve from each spectrum, thus allowing us to break the degeneracy between dust attenuation and stellar population properties when fitting the spectrum with stellar population synthesis models. We have applied our technique to the final data release of MaNGA, and obtained measurements of stellar population properties and emission line parameters, as well as the kinematics and dust attenuation of both stellar and ionized gas components. In this paper we describe our technique and the content and format of our data products. The whole dataset is publicly available in Science Data Bank with the link https://doi.org/10.57760/sciencedb.j00113.00088.

Key words: integral field spectroscopy, stellar populations, dust attenuation, ionized gas

中图分类号:  (Stellar dynamics and kinematics)

  • 98.10.+z
98.35.Ln (Stellar content and populations; morphology and overall structure) 98.38.Hv (H II regions; emission and reflection nebulae) 98.38.Cp (Interstellar dust grains; diffuse emission; infrared cirrus)