Probing the Red Giant Branch Phase Transition: Near‐Infrared Photometry of Six Intermediate‐Age Large Magellanic Cloud Clusters

2004 ◽  
Vol 608 (2) ◽  
pp. 772-780 ◽  
Author(s):  
Francesco R. Ferraro ◽  
Livia Origlia ◽  
Vincenzo Testa ◽  
Claudia Maraston
Keyword(s):  
Phase Transition ◽  
Near Infrared ◽  
Large Magellanic Cloud ◽  
Magellanic Cloud ◽  
Infrared Photometry ◽  
Cloud Clusters ◽  
Red Giant

scholarly journals Near-Infrared photometry of the LMC cluster Reticulum

2004 ◽  
Vol 193 ◽  
pp. 189-192
Author(s):  
M. Dall’Ora ◽  
G. Bono ◽  
J. Storm ◽  
V. Ripepi ◽  
V. Testa ◽  
...  
Keyword(s):  
Data Reduction ◽  
Near Infrared ◽  
Large Magellanic Cloud ◽  
Magellanic Cloud ◽  
Distance Estimate ◽  
Infrared Photometry ◽  
Rr Lyrae Stars ◽  
Rr Lyrae ◽  
Lyrae Stars

AbstractWe present U, B, V, I (SUSI@NTT) and J,Ks (SOFI@NTT) photometry of the Large Magellanic Cloud (LMC) cluster Reticulum. The observing strategy and data reduction (DAOPHOTII/ALLFRAME) allowed us to reach an accuracy of the order of 0.01 – 0.03 mag in all the bands at limiting magnitudes typical of RR Lyrae stars. Reticulum hosts a sizable sample of RR Lyrae stars (32), and we supply an accurate distance estimate using the RR Lyrae K-band Period-Luminosity-Metallicity (PLZK) relation. This method presents several advantages when compared with the MV vs [Fe/H] relation, since it is only marginally affected by off-ZAHB evolutionary effects and reddening corrections.

scholarly journals AGB Stars in the Large Magellanic Cloud as Seen with DeNIS

1999 ◽  
Vol 190 ◽  
pp. 385-386 ◽  
Author(s):  
M. R. Cioni ◽  
H. J. Habing ◽  
C. Loup ◽  
N. Epchtein ◽  
the DeNIS Consortium
Keyword(s):  
Near Infrared ◽  
Large Magellanic Cloud ◽  
Magellanic Cloud ◽  
Agb Stars ◽  
Infrared Photometry ◽  
Sky Survey ◽  
Right Ascension

We present infrared photometry of LMC stars taken from a region of 2.5° in right ascension from the DeNIS (Deep Near Infrared Southern Sky Survey) survey.

scholarly journals THE ARAUCARIA PROJECT. THE DISTANCE OF THE LARGE MAGELLANIC CLOUD FROM NEAR-INFRARED PHOTOMETRY OF RR LYRAE VARIABLES

2008 ◽  
Vol 136 (1) ◽  
pp. 272-279 ◽  
Author(s):  
Olaf Szewczyk ◽  
Grzegorz Pietrzyński ◽  
Wolfgang Gieren ◽  
Jesper Storm ◽  
Alistair Walker ◽  
...  
Keyword(s):  
Near Infrared ◽  
Large Magellanic Cloud ◽  
Magellanic Cloud ◽  
Infrared Photometry ◽  
Rr Lyrae

scholarly journals The Near Infrared Properties of Selected WN Stars in the Large Magellanic Cloud

1982 ◽  
Vol 99 ◽  
pp. 231-235
Author(s):  
N. Panagia ◽  
E.G. Tanzi ◽  
M. Tarenghi
Keyword(s):  
Near Infrared ◽  
Large Magellanic Cloud ◽  
Magellanic Cloud ◽  
Infrared Photometry ◽  
Central Object ◽  
30 Doradus

We report here on preliminary infrared photometry of six WN stars in the Large Magellanic Cloud. Besides R136, the central object of the 30 Doradus Nebula, the sample includes three stars (R139, R140, R145) located near the center of the region (within ∼ 1 arcmin) and two more stars (R144, R147) at a distance of ∼ 5 arcmin from R136.

scholarly journals Metallicities of intermediate-age and old star clusters in the Large Magellanic Cloud

2009 ◽  
Vol 5 (S266) ◽  
pp. 446-446
Author(s):  
Arūnas Kučinskas ◽  
Vidas Dobrovolskas ◽  
Algimantas Černiauskas ◽  
Roma Lazauskaitė ◽  
Toshihiko Tanabé
Keyword(s):  
Near Infrared ◽  
Star Clusters ◽  
Large Magellanic Cloud ◽  
Magellanic Cloud ◽  
Compelling Evidence ◽  
Cluster Sample ◽  
Global Cluster ◽  
Red Giant ◽  
Average Cluster ◽  
Metallicity Distribution

AbstractWe derive photometric metallicities for 56 intermediate-age and old star clusters in the Large Magellanic Cloud from the slopes of their red-giant branches in near-infrared color–magnitude diagrams (CMDs). The cluster sample covers the LMC bar and disk to a distance of ~2 kpc from the LMC center. The derived cluster metallicity distribution spans a range of [Fe/H] = +0.0 . . . 1.4 and is similar to the metallicity distribution of field stars. We find that the average cluster metallicities in certain fields of the LMC bar and disk may be different, but there seems to be no compelling evidence for a global cluster metallicity gradient in the LMC.

scholarly journals Red Giant Stars in the Large Magellanic Cloud Clusters

2006 ◽  
Vol 646 (2) ◽  
pp. 939-950 ◽  
Author(s):  
Alessio Mucciarelli ◽  
Livia Origlia ◽  
Francesco R. Ferraro ◽  
Claudia Maraston ◽  
Vincenzo Testa
Keyword(s):  
Large Magellanic Cloud ◽  
Magellanic Cloud ◽  
Giant Stars ◽  
Cloud Clusters ◽  
Red Giant Stars ◽  
Red Giant

scholarly journals The Near-infrared Tip of the Red Giant Branch. II. An Absolute Calibration in the Large Magellanic Cloud

2018 ◽  
Vol 858 (1) ◽  
pp. 12 ◽  
Author(s):  
Taylor J. Hoyt ◽  
Wendy L. Freedman ◽  
Barry F. Madore ◽  
Mark Seibert ◽  
Rachael L. Beaton ◽  
...  
Keyword(s):  
Near Infrared ◽  
Large Magellanic Cloud ◽  
Magellanic Cloud ◽  
Absolute Calibration ◽  
Red Giant

scholarly journals The VMC survey – XLIV: Mapping metallicity trends in the large magellanic cloud using near-infrared passbands

2021 ◽  
Author(s):  
Samyaday Choudhury ◽  
Richard de Grijs ◽  
Kenji Bekki ◽  
Maria-Rosa L Cioni ◽  
Valentin D Ivanov ◽  
...  
Keyword(s):  
Near Infrared ◽  
Spiral Galaxies ◽  
High Spatial Resolution ◽  
Large Magellanic Cloud ◽  
Magellanic Cloud ◽  
Magellanic Clouds ◽  
Tidal Interactions ◽  
The Mean ◽  
Red Giant ◽  
Metallicity Distribution

Abstract We have derived high-spatial-resolution metallicity maps covering ∼105 deg2 across the Large Magellanic Cloud (LMC) using near-infrared passbands from the VISTA Survey of the Magellanic Clouds. We attempt to understand the metallicity distribution and gradients of the LMC up to a radius of ∼ 6 kpc. We identify red giant branch (RGB) stars in spatially distinct Y, (Y − Ks) colour–magnitude diagrams. In any of our selected subregions, the RGB slope is used as an indicator of the average metallicity, based on calibration to metallicity using spectroscopic data. The mean LMC metallicity is [Fe/H] = −0.42 dex (σ[Fe/H] = 0.04 dex). We find the bar to be mildly metal-rich compared with the outer disc, showing evidence of a shallow gradient in metallicity (−0.008 ± 0.001 dex kpc−1) from the galaxy’s centre to a radius of 6 kpc. Our results suggest that the LMC’s stellar bar is chemically similar to the bars found in large spiral galaxies. The LMC’s radial metallicity gradient is asymmetric. It is metal-poor and flatter towards the southwest, in the direction of the Bridge. This hints at mixing and/or distortion of the spatial metallicity distribution, presumably caused by tidal interactions between the Magellanic Clouds.

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