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Overview of the SDSS-V Magellanic Genesis Survey

Nidever, David L. ; Horta, Danny ; Majewski, Steven R. ; Almeida, Andres ; Povick, Joshua T. ; Oden, Slater J. ; Jiménez-Arranz, Óscar LU ; Stringfellow, Guy ; Chojnowski, S. Drew and van der Marel, Roeland , et al. (2026) In Astronomical Journal 172(2).
Abstract

The Sloan Digital Sky Survey-V (SDSS-V) Magellanic Genesis Survey is a spectroscopic program designed to map the kinematic and chemical structure of the Magellanic Clouds (MCs) using APOGEE and BOSS spectroscopy. This overview describes the survey’s design, target selection, and science goals and highlights some first results using these data. In the inner regions of the Large and Small Magellanic Clouds (LMC and SMC), the survey obtained high-resolution near-infrared APOGEE spectra (S/N ≈ 45) of ∼14,000 bright, oxygen-rich asymptotic giant branch (AGB-O) stars. These data provide contiguous spatial coverage of the MCs’ main bodies, enabling detailed chemodynamical studies. To explore extended structures, the survey includes BOSS... (More)

The Sloan Digital Sky Survey-V (SDSS-V) Magellanic Genesis Survey is a spectroscopic program designed to map the kinematic and chemical structure of the Magellanic Clouds (MCs) using APOGEE and BOSS spectroscopy. This overview describes the survey’s design, target selection, and science goals and highlights some first results using these data. In the inner regions of the Large and Small Magellanic Clouds (LMC and SMC), the survey obtained high-resolution near-infrared APOGEE spectra (S/N ≈ 45) of ∼14,000 bright, oxygen-rich asymptotic giant branch (AGB-O) stars. These data provide contiguous spatial coverage of the MCs’ main bodies, enabling detailed chemodynamical studies. To explore extended structures, the survey includes BOSS optical spectroscopy of fainter red giant stars selected with Gaia DR3 data, reaching G ≈ 17.5. Many of these targets extend to the outer regions of the MCs, which are known to span ∼20° (LMC) and ∼12° (SMC) and contain diffuse substructures of unclear origin. BOSS data in the inner regions also complement APOGEE by providing elements inaccessible in the near-infrared and enabling cross-calibration between instruments. The survey further includes APOGEE and BOSS observations of ∼300 evolved massive stars and a small sample of symbiotic binaries previously observed by APOGEE-1 and APOGEE-2, enhancing our understanding of massive stellar evolution and complementing the SDSS-V main-sequence massive star program.

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organization
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type
Contribution to journal
publication status
published
subject
keywords
Magellanic Clouds (990), Spectroscopy (1558), Stellar kinematics (1608), Surveys (1671)
in
Astronomical Journal
volume
172
issue
2
article number
130
publisher
IOP Publishing
external identifiers
  • scopus:105046171134
ISSN
0004-6256
DOI
10.3847/1538-3881/ae7c76
language
English
LU publication?
yes
id
a79c59f1-6dba-4b7d-8f8d-4896ab1cd883
date added to LUP
2026-09-01 09:30:06
date last changed
2026-09-01 09:30:45
@article{a79c59f1-6dba-4b7d-8f8d-4896ab1cd883,
  abstract     = {{<p>The Sloan Digital Sky Survey-V (SDSS-V) Magellanic Genesis Survey is a spectroscopic program designed to map the kinematic and chemical structure of the Magellanic Clouds (MCs) using APOGEE and BOSS spectroscopy. This overview describes the survey’s design, target selection, and science goals and highlights some first results using these data. In the inner regions of the Large and Small Magellanic Clouds (LMC and SMC), the survey obtained high-resolution near-infrared APOGEE spectra (S/N ≈ 45) of ∼14,000 bright, oxygen-rich asymptotic giant branch (AGB-O) stars. These data provide contiguous spatial coverage of the MCs’ main bodies, enabling detailed chemodynamical studies. To explore extended structures, the survey includes BOSS optical spectroscopy of fainter red giant stars selected with Gaia DR3 data, reaching G ≈ 17.5. Many of these targets extend to the outer regions of the MCs, which are known to span ∼20° (LMC) and ∼12° (SMC) and contain diffuse substructures of unclear origin. BOSS data in the inner regions also complement APOGEE by providing elements inaccessible in the near-infrared and enabling cross-calibration between instruments. The survey further includes APOGEE and BOSS observations of ∼300 evolved massive stars and a small sample of symbiotic binaries previously observed by APOGEE-1 and APOGEE-2, enhancing our understanding of massive stellar evolution and complementing the SDSS-V main-sequence massive star program.</p>}},
  author       = {{Nidever, David L. and Horta, Danny and Majewski, Steven R. and Almeida, Andres and Povick, Joshua T. and Oden, Slater J. and Jiménez-Arranz, Óscar and Stringfellow, Guy and Chojnowski, S. Drew and van der Marel, Roeland and Cullinane, Lara and Dias, Bruno and Johnson, Jennifer and Donor, John and Cioni, Maria Rosa and Maitra, Chandreyee and Kollmeier, Juna and Tkachenko, Andrew}},
  issn         = {{0004-6256}},
  keywords     = {{Magellanic Clouds (990); Spectroscopy (1558); Stellar kinematics (1608); Surveys (1671)}},
  language     = {{eng}},
  number       = {{2}},
  publisher    = {{IOP Publishing}},
  series       = {{Astronomical Journal}},
  title        = {{Overview of the SDSS-V Magellanic Genesis Survey}},
  url          = {{http://dx.doi.org/10.3847/1538-3881/ae7c76}},
  doi          = {{10.3847/1538-3881/ae7c76}},
  volume       = {{172}},
  year         = {{2026}},
}