Upcoming JC

Title: TBC

Speaker: Shangguan

Summary: TBC

Past JC

Title: Statistics for Galaxy Outflows at z∼6−9 with Imaging and Spectroscopic Signatures Identified with JWST/NIRCam and NIRSpec Data

Speaker: Capucine

Summary: Zhang et al look at 61 galaxies between z=5.4 and 8.9, both using NIRSpec spectroscopy and NIRCam imaging, to study the outflow properties in their sample. They make a study of both spatially extended [OIII] emission in the imaging (5/61) and broad component in the emission line, indicating the presence of fast winds (5/30); including one galaxy that has both spatially extended emission and a broad component in the spectra. They compute the ratio of the wind velocity over the escape velocity of the galaxies' halo, and find that none of the detected outflows have velocities high enough to eject gas outside the gravitational well of the halo. They conjecture that they are witnessing the different phases of a star forming outflow event (as shown in the figure, where in the beginning outflows can only be seen in the spectra, then an extended emission is observed, and finally it falls back into the galaxy). They also compare their outflow incidence in the extended emission at high redshift to local studies, and find an increase in the incidence broadly consistent with the increase in major merger rate; but fail to observe a similar increase in incidence with the "spectral" outflows (Figure 11).


Title: The MOSDEF-LRIS Survey: Detection of Inflowing Gas Towards Three Star-forming Galaxies at z ~ 2

Speaker: Daizhong

Summary: The authors observed wide rest-UV absorption lines in three MOSDEF galaxies. They argue that these are the signature of inflowing gas from the recycled metal-enriched gas with a large velocity ~250-500 km/s, instead of pristine gas from the CGM.

Meeting location: MPE IR meeting room and mpeir Zoom (passcode: 123)

Date and time: Every Monday at 13h45


Q&A:

Q: Where should I look for or suggest papers?

A: MPE IR Benty-fields or in the MPE IR Group Slack channel #galev-interesting-papers 

Q: What if I do not have access to MPE IR Benty-fields page or the Slack channel?

A: Send an email to Lilian (lilian[at]mpe.mpg.de)



























This page is maintained by Lai Yee Lilian Lee  and Claudia Pulsoni . Last updated on 21 Jun 2023.


How does it work?

Each speaker should contribute a brief summary of the paper (less than 200 words) along with a preferred scientific figure. 

if JWST-related paper:

Go to JWST papers database to see if your paper is already listed. 

if listed:

Step 1: Click the button on the top right, and select .

Step 2: Put your summary and figure there. When you are done, publish the blog post.

Step 3: Go back to JWST papers database 

Step 4: Go to "..." and click Edit. 

Step 5: To create the hyperlink between the table entry and your blogpost, highlight the title of your paper and then click "Insert link" on the top toolbar. There you should be able to search for your newly created blogpost by its title. When you are done, click at the bottom right to make the changes public. 

else:

Step 1: Create a new entry in the table by Step 4 above.

Step 2: Repeat Step 1 to Step 5 above.

else:

Please send the summary and the figure to lilian[at]mpe.mpg.de within one week after the JC.