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Title: Characterizing the Stellar Population of NGC 1980

Abstract

NGC 1980 is a young cluster that is located about 0.°5 south of the Orion Nebula Cluster (ONC). Recent studies by Bouy et al. and Pillitteri et al. have suggested that NGC 1980 contains an older population of stars compared to a much younger ONC, and that it belongs to a foreground population that may be located in front of the Orion A molecular gas by as much as 40 pc. In this work, we present low-resolution spectra toward 148 young stars found toward the NGC 1980 region. We determine the spectral types of these stars, examine accretion signatures and measure the extinction toward them. We determine that based on these observations, the age of the population of NGC 1980 is indistinguishable from L1641, estimated to be ∼3 Myr, comparable with the study by Fang et al.

Authors:
; ;  [1];  [2]
  1. Department of Astronomy, University of Michigan, 1085 S. University Street, Ann Arbor, MI 48109 (United States)
  2. Ritter Astrophsical Research Center, Department of Physics and Astronomy, University of Toledo, Toledo, OH 43606 (United States)
Publication Date:
OSTI Identifier:
22663444
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astronomical Journal (Online); Journal Volume: 154; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; COMPARATIVE EVALUATIONS; NEBULAE; RESOLUTION; STAR ACCRETION; STAR CLUSTERS; STARS

Citation Formats

Kounkel, Marina, Hartmann, Lee, Calvet, Nuria, and Megeath, Tom, E-mail: mkounkel@umich.edu. Characterizing the Stellar Population of NGC 1980. United States: N. p., 2017. Web. doi:10.3847/1538-3881/AA74DF.
Kounkel, Marina, Hartmann, Lee, Calvet, Nuria, & Megeath, Tom, E-mail: mkounkel@umich.edu. Characterizing the Stellar Population of NGC 1980. United States. doi:10.3847/1538-3881/AA74DF.
Kounkel, Marina, Hartmann, Lee, Calvet, Nuria, and Megeath, Tom, E-mail: mkounkel@umich.edu. Sat . "Characterizing the Stellar Population of NGC 1980". United States. doi:10.3847/1538-3881/AA74DF.
@article{osti_22663444,
title = {Characterizing the Stellar Population of NGC 1980},
author = {Kounkel, Marina and Hartmann, Lee and Calvet, Nuria and Megeath, Tom, E-mail: mkounkel@umich.edu},
abstractNote = {NGC 1980 is a young cluster that is located about 0.°5 south of the Orion Nebula Cluster (ONC). Recent studies by Bouy et al. and Pillitteri et al. have suggested that NGC 1980 contains an older population of stars compared to a much younger ONC, and that it belongs to a foreground population that may be located in front of the Orion A molecular gas by as much as 40 pc. In this work, we present low-resolution spectra toward 148 young stars found toward the NGC 1980 region. We determine the spectral types of these stars, examine accretion signatures and measure the extinction toward them. We determine that based on these observations, the age of the population of NGC 1980 is indistinguishable from L1641, estimated to be ∼3 Myr, comparable with the study by Fang et al.},
doi = {10.3847/1538-3881/AA74DF},
journal = {Astronomical Journal (Online)},
number = 1,
volume = 154,
place = {United States},
year = {Sat Jul 01 00:00:00 EDT 2017},
month = {Sat Jul 01 00:00:00 EDT 2017}
}
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