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Dive into the research topics where Anna Rosa Marenzi is active.

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Featured researches published by Anna Rosa Marenzi.


The Astronomical Journal | 1999

Deep Near-Infrared Images and ISOCAM Observations of Chamaeleon I North

Paolo Persi; Anna Rosa Marenzi; A. A. Kaas; G. Olofsson; L. Nordh; M. Roth

We present the results of deep near-infrared imaging and ISOCAM observations of three selected regions localized in the northern part of the Chamaeleon I dark cloud, in order to search for the low-luminosity population. In an area of 3 × 3 arcmin2 centered on the bipolar molecular outflow, which is the densest part of the cloud, we have discovered a new Class I source (here named ISOCAM–Cha INa2) with a spectral index α = 1.9 and 1–18 μm luminosity of 0.6 L⊙ that is most probably responsible for the observed CO outflow. The comparison between the observed K-magnitude distribution for this region and that obtained for a region outside the outflow and adjacent to the star HD 97300 indicates the possible presence of a very low luminosity young stellar population in the densest part of the cloud.


Proceedings of the International Astronomical Union | 2006

Mid-IR images of methanol masers and ultracompact HII regions

Paolo Persi; M. Tapia; Anna Rosa Marenzi

Paolo Persi1, Mauricio Tapia2 and Anna Rosa Marenzi1 INAF/IASF-Roma Via fosso del Cavaliere,100, oo133 Roma-Italy email: [email protected] IA-UNAM Ensenada, Mexico Methanol masers and UCHII regions trace massive star formation sites. We have undertaken a mid-IR survey of 17 regions containing methanol masers and UCHIIs in order to locate the young stellar sources associated with them. The images were obtained from 8.7 to 18.8 μm with the mid-IR camera CID (Salas et al. 2003) on the 2.1m telescope of the Observatorio Astronomico Nacional at San Pedro Martir (Baja California, Mexico). The images were taken with a scale 0.55”/pix and the mean PSF was 1.5-2.0”(FWHM) close to the diffraction limit. We report as an example in Fig. 1 (left panel) our 18.8μm


Chinese Journal of Astronomy and Astrophysics | 2006

Infrared and X-ray Emission in High Mass Star Forming Regions

Paolo Persi; Anna Rosa Marenzi

We present a correlated study of IR and X-ray emission in massive star formation regions using X-ray Chandra data and ground-based near, and mid-IR observations in order to understand the mechanisms of X-ray emission associated to high massive protostellar objects. Mon R2, and the complex giant molecular clouds W3 and NGC 6334 are the regions here analyzed.


Proceedings of the International Astronomical Union | 2005

High mass star formation in the giant molecular cloud NGC 6334: an infrared view

P. Persi; M. Tapia; M. Roth; M. Gómez; Anna Rosa Marenzi

Sub-arcsec images in the JHKs, H2 and Br of three areas (I(N), F and NGC 6334 IV (MM3)) of the giant molecular cloud NGC 6334 are presented. The preliminary results indicate the presence of a deeply embedded young stellar cluster in the northermost part of the cloud (I(N)). We have identied the exciting source of the cometary UCHII NGC 6334 F. This source has an infrared luminosity LIR= 3 10 3 L and a very steep infrared spectral index. Finally, a new center of massive star formation associated with the millimeter peak MM3 has been found east of the bipolar HII region NGC 6334 A.


The Astronomical Journal | 2007

ISO-Cha I 192: A New Embedded Eruptive Variable in the Chamaeleon I Dark Cloud

Paolo Persi; M. Tapia; Mercedes Gomez; Barbara A. Whitney; Anna Rosa Marenzi; M. Roth


The Astronomical Journal | 2008

STAR FORMATION IN THE SOUTHERN DARK CLOUD DC 296.2-3.6

Paolo Persi; M. Gómez; M. Tapia; M. Roth; J. M. De Buizer; Anna Rosa Marenzi


Archive | 2007

An infrared study of southern dark clouds .

Paolo Persi; Mario Tapia; Mary Tork Roth; Maria A. Gomez; Anna Rosa Marenzi


Archive | 2005

The brown dwarf candidate [KG2001] 102 in the Cha I cloud: Is it a multiple system?

M. Tapia; Paolo Persi; Mercedes Gomez; M. Roth; Anna Rosa Marenzi


Archive | 2005

High mass star formation in the molecular cloud complex NGC 6334: NGC 6334E

Paolo Persi; M. Tapia; M. Roth; Mercedes Gomez; Anna Rosa Marenzi


Archive | 2003

SOFI and ISOCAM observations of Cha II (Persi+, 2003)

Paolo Persi; Anna Rosa Marenzi; Maria A. Gomez; G. Olofsson

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M. Tapia

National Autonomous University of Mexico

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Mercedes Gomez

National University of Cordoba

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Joaquin Bohigas

National Autonomous University of Mexico

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Mario Tapia

National Autonomous University of Mexico

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