Welcome!

I'm Marc Sauvage, infrared astronomer when I work, and this is my personal web site. I admit that I am a bit lazy in updating it but still it does evolve with time. This site is hosted by Free, a french internet provider that also offers free webspace with no commercial banners or pop-ups, and I thank them for that.

Note that all material presented here is personal, any opinions expressed are strictly my own as an individual.

This page is (always) in development but currently opens to:

• The Astro Formulae web book (go check it out!)	• The Warehouse (below) where items to download are stored. If you have received an email from saying you can get something from my site, that's where it will be).
• My repository of processed CAM data, where I store fits images of galaxies observed with ISOCAM that can be downloaded for scientific use.	• As I have started to use a presentation software to prepare my viewgraphs (powerpoint to mention it), I've decided to make some of them available here, both in HTML (crude) and powerpoint form. Please feel free to use them.
• If you know the data manipulation and programmation language called IDL, you know that there are tricks that can ease a programmer's life. Here is a page that lists those that I have found... (watch out, this page is framed)	• With the help of Gary Mamon I have written a bibliography tool that lets you create the HTML bibliography of a list of people (a lab for instance). Feel free to download and use this tool.
• For the organization of a meeting, I have discovered AppleScript, the scripting language for the MacOS. I found out also that example scripts are the best way to learn the tricks of the language so this page presents a few of my scripts.	• I maintain a random MacOSX notes page for the sake of the group of people in my lab that are running this system as their main OS. Because we're in France, it's all in French.
• I've bought myself a digital camcorder and Wow! now I'm a movie maker!! Well it's mostly family stuff, and my first steps at animated films.	• Sometimes I go on trips that are totally unrelated with my work, and I take notes and pictures. I've decided to post some of them here.

Very recent addition: Nicolas Billot's PhD thesis on the PACS bolometer camera is available in the warehouse.

The french system requires that you obtain a diploma to be allowed to advise PhD students. I've just completed that. If you are interested in my work, and read french (althoug the most significant papers, in english are included), you can download the pdf file.

A number of other things may appear in the future.

One thing that could be of interest to you is a list of my electronically available publications. Feel free to extract and use figures that you may find here in your presentations. Note however that if you wish to use them in publications, you should contact the publishers of these papers who legally own the copyrights. In all cases the links provided below should allow you to do that.

If you want to get one of my not-electronically-available publications, or find problems with either the links of the downloaded files, just email me at marc_dot_sauvage_at_cea_dot_fr.

I think that glancing through the titles of my publications will let you guess in which field I work! If you're not satisfyied, then you can get more details here.

2001

2000

1999

1998

1997

2001

refereed publications

• The relationship between star formation rates and the mid-infrared emission in galactic disks , 2001, Roussel, H., Sauvage, M., Vigroux, L., Bosma, A. A&A 372, 427-437 In the course of our investigation on the heating sources for the dust in galaxies, we show here that in the disk of nearby spiral galaxies, these sources are mostly the newly formed stars, also responsible for the Halpha emission. We comment on the use of this relation for other Mid-IR extragalactic studies

• The impact of bars on the mid-infrared dust emission of spiral galaxies: global and circumnuclear properties , 2001, Roussel, H., Sauvage, M., Vigroux, L., Bosma, A., Bonoli, C., Gallais, P., Hawarden, T., Madden, S., Mazzei, P. A&A 372, 406-426 Bars are often considered as triggers for an enhanced star-formation activity in galaxies. We study this view in our sample of galaxies observed in the Mid-IR, with a special attention to the propertices of the nuclear regions, not considered in the following paper

• An atlas of mid-infrared dust emission in spiral galaxies , 2001, Roussel, H., Vigroux, L., Bosma, A., Sauvage, M., Bonoli, C., Gallais, P., Hawarden, T., Lequeux, J., Madden, S., Mazzei, P. A&A 369, 473-509 This paper is the source for the other two Roussel et al. 2001 papers. I In it we publish all the data on the ISOCAM nearby spiral galaxies program (about 60 galaxies). A selection of maps is also available in the paper.

• Mid-Infrared observations of NGC 1068 with the Infrared Space Observatory , 2001, Le Floc'h, E., Mirabel, I. F., Laurent, O., Charmandaris, V., Gallais, P., Sauvage, M., Vigroux, L., Cesarsky, C. A&A 367, 487-497 This paper presents the CVF (spectro-imaging) data we have obtained on this composite galaxy. With a deconvolution technique we separate the starburst regions from the central AGN. We also study the relative contribution of the AGN and the starburst to the IR light from the Mid-IR to the submillimeter.

2000

refereed publications

• Mid-infrared imaging and spectrophotometry of N66 in the SMC with ISOCAM , 2000, Contursi, A., Lequeux, J., Cesarsky, D., Boulanger, F., Rubio, M., Hanus, M., Sauvage, M., Tran, D., Bosma, A., Madden, S., Vigroux, L. A&A 362, 310-324 N66 is the most luminous HII region in the Small Magellanic Cloud. With a combination of images and spectra, we reveal that the HII region itself is completely devoid of PAHs, and is also one of the few objects in the sky showing Silicate emission.

• ISO observations of the planetary nebula Lindsay 305 in the Small Magellanic Cloud , 2000, Kucinskas, A., Vansevicius, V., Sauvage, M., Tanabe, T. pasj 52, 619-622 comment

• Mid-infrared diagnostics to distinguish AGNs from starbursts , 2000, Laurent, O., Mirabel, I. F., Charmandaris, V., Gallais, P., Madden, S. C., Sauvage, M., Vigroux, L., Cesarsky, C. A&A 359, 887-899With our database of ISOCAM observations (imaging and spectro-imaging) we develop simple diagnostic tools to uncover the primary source of the energy emitted by a galaxy in the IR.

• New infrared object in the field of the SMC cluster NGC 330,2000, Kucinskas, A., Vansevicius, V., Sauvage, M., Tanabe, T. A&A 353, L21. In the course of SMC cluster mapping, we have discovered an intriguing infrared-excess star whose SED is analyzed here (it is possibly a post AGB or a Be supergiant star).

• A unified image of dust grains for the warped spiral galaxy in the merger Centaurus A,2000, Block, D. L., Sauvage, M. A&A 353, 72. We have applied our optical-infrared methodology to study the dust distribution in Cen A. We show that it confirms the picture presented in the Mirabel paper of a warped spiral. We also comment on the absence of dust emission (CAM or SCUBA) for the outer extinction bands.

1999

refereed publications

• Mid-infrared and far-ultraviolet observations of the star-forming ring in M 31, 1999, Pagani, L., Lequeux, J., Cesarsky, D., Donas, J., Milliard, B., Loinard, L., Sauvage, M. A&A 351, 447. M 31, our closest spiral neighbor has the peculiarity of possessing a very weak UV field. Among other results we show that in its star forming ring, the infrared brightness is much more related to the gas column density than to the intensity of the radiation field.

• A mid-infrared and far-infrared view of galaxies, 1999, Cesarsky, C. J., Sauvage, M., available here, to appear in Millenium Morphology conference, held in Johannesburg, R.S.A., this is a necessary partial and incomplete review of what ISO has helped us understand of galaxies, from our nearest neighbors, to the far reaches of the universe.

• Dust in an extremely metal-poor galaxy: mid-infrared observations of SBS 0335-052, 1999, Thuan, T. X. , Sauvage, M., Madden, S.ApJ 516, 783. In this paper, we present ISOCAM spectro-photometry of the second most metal-poor galaxy, showing that it is surprisingly infrared-bright, and hides 25-100% of its total star formation activity.

• ISOCAM data processing, 1999, Starck, J. L., Abergel, A., Aussel, H., Sauvage, M., Gastaud, R., Claret, A., Desert, F. X., Delattre, C., Pantin, E., A&AS 134, 135. Contains up-to-date (at writing time) methods to reduce ISOCAM data. Unfortunately, as with all such papers, some of these are obsolete today.

• A barred spiral at the center of the giant elliptical radio galaxy Centaurus A, 1999, Mirabel, I. F., Laurent, O., Sanders, D. B., Sauvage, M., Tagger, M., Charmandaris, V., Vigroux, L., Gallais, P., Cesarsky, C., Block, D. L., A&A 341, 667. shows the ISOCAM observations of CenA where the mid-infrared structure nested inside the galaxy is interpreted as a mini barred spiral structure.

• Dust in the wheel: the Cartwheel galaxy in the mid-IR, 1999, Charmandaris, V., Laurent, O., Mirabel, I. F., Gallais, P., Sauvage, M., Cesarsky, C., Appleton, P., A&A 341, 69. A new view of this famous ring galaxy, that possibly brings more puzzles than it solves...

non-refereed publications

• ISO observations of the Magellanic Clouds globular clusters, 1999, Tanabé, T., Nishida, S., Nakada, Y., Onaka, T., Glass, I. S., Sauvage, M., in the proceedings of the conference "The Universe as seen by ISO", P. Cox and M. Kessler, Eds., available here, These ISOPHOT and ISOCAM observations reveal the existence of intriguing stars in the clusters.

• ISOCAM mapping and spectro-imaging of bipolar outflows. H₂ rotational lines as probes of flow entrainment, 1999, Cabrit, S., Bontemps, S., Lagage, P. O., Sauvage, M., Boulanger, F., André, P., Nordh, L., Olofsson, G., Cesarsky, C. J., Boulade, O., Sibille, F., Siebenmorgen, R., in the proceedings of the conference "The Universe as seen by ISO", P. Cox and M. Kessler, Eds., available here, ISOCAM results on the flow sources L 1157 and HH 54 are presented and the physics of shocks in the source is investigated.

• ISOCAM observations of galaxies, 1999, Vigroux, L., Charmandaris, V., Gallais, P., Laurent, O., Madden, S., Mirabel, I. F., Roussel, H., Sauvage, M., Tran, D., in the proceedings of the conference "The Universe as seen by ISO", P. Cox and M. Kessler, Eds., available here, Contains a review of the nearby galaxy results assembled by the CAM consortium team.

• ISOCAM observations of the interacting galaxy system Mrk 171, 1999, Gallais, P., Laurent, O., Charmandaris, V., Rouan, D., Mirabel, I. F., Sauvage, M., Tran, D., Vigroux, L., in the proceedings of the conference "The Universe as seen by ISO", P. Cox and M. Kessler, Eds., available here, A detailed analysis of the ISOCAM spectro-photometric data is presented, with a particular emphasis on the origin of the emission in the B component.

• The mid-infrared emission from early-type galaxies, 1999, Madden, S. C., Vigroux, L., Sauvage, M., in the proceedings of the conference "The Universe as seen by ISO", P. Cox and M. Kessler, Eds., available here, presents the results of the ISOCAM guaranteed time survey on early-type galaxies and reveals that some of them have dust that could be quite similar to that found in spirals, while some of them are devoid of it.

• Barred spirals observed in the mid-infrared, 1999, Roussel, H., Vigroux, L., Sauvage, M., Bonoli, C., Bosma, A., Gallais, P., Hawarden, T., Madden, S. C., Mazzei, P., in the proceedings of the conference "The Universe as seen by ISO", P. Cox and M. Kessler, Eds., available here, we show here that barred galaxies, contrary to normal ones, can show a 15µm excess in their center, and that this excess only occurs in early-type barred galaxies.

• Dust in an extremely metal-poor galaxy: mid-infrared observations of SBS 0335-052, 1999, Sauvage, M., Madden, S. C., Thuan, T. X., in the proceedings of the conference "The Universe as seen by ISO", P. Cox and M. Kessler, Eds., This paper is now essentially published in ApJ and I refer you to that version

1998

• The strange mid-infrared spectrum of M31: ISOCAM observations,1998, Cesarsky, D., Lequeux, J., Pagano, L., Ryter, C., Loinard, L., Sauvage, M., A&A 337, L7.M31 is the first extragalactic object where the classical infrared bands are not detected. This paper shows this spectrum, however, since it has been published we have changed our minds on the physical interpretation and I encourage you to read instead the Pagani et al. paper that is now published..

• Mid-IR mapping of the region of N4 in the Large Magellanic Cloud with ISOCAM,1998, Contursi, A., Lequeux, J., Hanus, M., Heydari-Malayeri, M., Bonoli, C., Bosma, A., Boulanger, F., Cesarsky, D., Madden, S., Sauvage, M., Tran, D., Vigroux, L., A&A 336, 62.One of the first papers to show convincing 15/7 µm spatial variations related to the energy density.

• Mid-IR emission of galaxies in the Virgo cluster. II. Integrated properties,1998, Boselli, A., Lequeux, J., Sauvage, M., Boulade, O., Boulanger, F., Cesarsky, D., Dupraz, C., Madden, S., Viallefond, F., Vigroux, L., A&A 335, 53, The Virgo program is one of the few statistically complete surveys performed by ISO. Here all spiral galaxies in two areas of the clusters were observed (about 100 objects).

• The dark side of star formation in the Antennae galaxies, 1998, Mirabel, I. F., Vigroux, L., Charmandaris, V., Sauvage, M., Gallais, P., Tran, D., Cesarsky, C., Madden, S. C., Duc, P. A., A&A 333, L1. We show here that 15-20% of the total MIR luminosity of the system originates in a compact, unresolved and dust-enshrouded source. By comparing our infrared image to an HST one, we also show that this source is barely detected in the visible, thereby implying that reliable SFRs are extremely hard to derive from the visible-UV.

1997

• Macromolecules, very small grains, and large dust particles in the Whirlpool galaxy M51 and its companion: a unified view,1997, Block, D. L., Elmegreen, B. G., Stockton, A., Sauvage, M., ApJLett 486, L95, An original technique, combining B-band and 15 µm imaging is used to study the distribution of the dust phase in M51. It also reveals a ring-like structure in the nucleus of the companion.

• 10 µm imaging and HI observations of the Blue Compact Dwarf galaxy He 2-10,1997, Sauvage, M., Thuan, P. O., Lagage, P. O., A&A 325, 98, Ground-based infrared broad-band images of the BCDG are analysed. We make a case for emission originating in the outer edge of molecular clouds exposed to the strong UV light of nearby clusters. We also show that substantial extinction has to take place in the IR. [Note that the table was published without its footnotes, a correct version can be downloaded here]

• Mid-IR colors and star formation in Virgo and Coma galaxies, 1997, Boselli, A., Lequeux, J., Contursi, A., Gavazzi, G., Boulade, O., Boulanger, F., Cesarsky, D., Dupraz, C., Madden, S. C., Sauvage, M., Viallefond, F., Vigroux, L., A&A 324, L13, where we evidence a curious behavior of the 6.7 and 15 µm flux at high star formation rate, with respect to the 60 or 100 µm flux.

to be continued...

This is the warehouse

In permanent storage, we have:

• The pdf file of my (no longer so) recently defended "Habilitation à diriger des recherches".
• Various PACS downlaodable goodies
  • My note investigating whether the proportionality between the measured signal and the incoming flux observed during the FM test is correct (and yes it is...).
  • The current (4.0) version of the functional test report.
  • A movie of the PhFPU first light on November 5 in the FM instrument. This movie is a screen capture of the QLA screen replaying the telemetry file of a field of view scan where both internal calibration sources are on, and we are looking at a dark OGSE. It is rather large (116 Mb) and requires Quicktime. You can also download a compressed avi version.
  • Another movie of the first light event. This time this is the result of the joint efforts of Nicolas Billot, Daniel Dang and René Gastaud, using a combination of PCSS and IDL. This is from a scan where the OGSE black-body source is switched on.
  • The first movie of a Polar Bear crossing the focal plane.
  • A movie of the effect of operating the solar panels with the present "open-loop" routing of the warm harnesses on the satellite cryostat, i.e. the so-called H-field movie. It is a real-time movie where we have subtracted an offset reference image to let you appreciate the dramatic effects.

In temporary storage we have:

• A self-mounting disk image that contains the X11 user package for Tiger.
• Nicolas Billot's great PhD thesis on the PACS bolometer camera (in french)
• A short cut from the PACS first image reception
• Des fichiers mp3 de la videoconference Herschel du 21/10. le premier et deuxième.

Last modified: 24/06/2009 by Marc Sauvage, when I added stuff to the warehouse section. Here is also a link to my bookmarks.